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## [3.7.3 Patch release for 3.7.0 with iOS8+ framework and Carthage on Jun 13th, 2015](https://github.com/rs/SDWebImage/releases/tag/3.7.3)
- Adds support for **iOS 8+ Framework and Carthage** [#1071](https://github.com/rs/SDWebImage/pull/1071) [#1081](https://github.com/rs/SDWebImage/pull/1081) [#1101](https://github.com/rs/SDWebImage/pull/1101)
- [Refactor] Use `NSMutableSet` for failed URLs' storage instead of array [#1076](https://github.com/rs/SDWebImage/pull/1076)
- Make a constant for the error domain [#1011](https://github.com/rs/SDWebImage/pull/1011)
- Improve operation behavior [#988](https://github.com/rs/SDWebImage/pull/988)
- Bug fix: `Collection <__NSArrayM: > was mutated while being enumerated` [#985](https://github.com/rs/SDWebImage/pull/985)
- added `SDWebImageAvoidAutoSetImage` option to avoid automatic image addition in `UIImageView` and let developer to do it himself [#1188](https://github.com/rs/SDWebImage/pull/1188)
- Added support for custom disk cache folder with fall back for caches directory [#1153](https://github.com/rs/SDWebImage/pull/1153)
- Added some files to the workspace so they are easier to edit [8431481](https://github.com/rs/SDWebImage/commit/8431481)
- Doc update [72ed897](https://github.com/rs/SDWebImage/commit/72ed897) [7f99c01](https://github.com/rs/SDWebImage/commit/7f99c01) [#1016](https://github.com/rs/SDWebImage/pull/1016) [#1038](https://github.com/rs/SDWebImage/pull/1038) [#1045](https://github.com/rs/SDWebImage/pull/1045)
- [Memory Issue] Clear `SDWebImagePrefetcher` `progressBlock` when it has completed [#1017](https://github.com/rs/SDWebImage/pull/1017)
- avoid warning `<Error>: ImageIO: CGImageSourceCreateWithData data parameter is nil` if `imageData` is nil [88ee3c6](https://github.com/rs/SDWebImage/commit/88ee3c6) [#1018](https://github.com/rs/SDWebImage/pull/1018)
- allow override `diskCachePath` [#1041](https://github.com/rs/SDWebImage/pull/1041)
- Use `__typeof(self)` when assigning `weak` reference for block [#1054](https://github.com/rs/SDWebImage/pull/1054)
- [Refactor] Implement cache cost calculation as a inline function [#1075](https://github.com/rs/SDWebImage/pull/1075)
- @3x support [9620fff](https://github.com/rs/SDWebImage/commit/9620fff) [#1005](https://github.com/rs/SDWebImage/pull/1005)
- Fix parenthesis to avoid crashes [#1104](https://github.com/rs/SDWebImage/pull/1104)
- Add `NSCache` countLimit property [#1140](https://github.com/rs/SDWebImage/pull/1140)
- `failedURLs` can be removed at the appropriate time [#1111](https://github.com/rs/SDWebImage/pull/1111)
- Purge `NSCache` on system memory notifications [#1143](https://github.com/rs/SDWebImage/pull/1143)
- Determines at runtime is `UIApplication` is available as per [#1082](https://github.com/rs/SDWebImage/issues/1082) [#1085](https://github.com/rs/SDWebImage/pull/1085)
- Fixes http://git.chromium.org/webm/libwebp.git/info/refs not valid [#1175](https://github.com/rs/SDWebImage/pull/1175) + Reverted [#1193](https://github.com/rs/SDWebImage/pull/1193) + [#1177](https://github.com/rs/SDWebImage/pull/1177)
- 404 image url was causing the test to fail [0e761f4](https://github.com/rs/SDWebImage/commit/0e761f4)
- Fix for transparency being lost in transformed images. [#1121](https://github.com/rs/SDWebImage/pull/1121)
- Add handling for additional error codes that shouldn't be considered a permanent failure [#1159](https://github.com/rs/SDWebImage/pull/1159)
- add webp accepted content type only if `WebP` enabled [#1178](https://github.com/rs/SDWebImage/pull/1178)
- fix `ImageIO: CGImageSourceCreateWithData` data parameter is nil [#1167](https://github.com/rs/SDWebImage/pull/1167)
- Applied patch for issue [#1074](https://github.com/rs/SDWebImage/issues/1074) SDWebImage residing in swift module breaks the debugger [#1138](https://github.com/rs/SDWebImage/pull/1138)
- Fixed URLs with trailing parameters get assigned an incorrect image scale value [#1157](https://github.com/rs/SDWebImage/issues/1157) [#1158](https://github.com/rs/SDWebImage/pull/1158)
- Add newline to avoid compiler warning in `WebImage.h` [#1199](https://github.com/rs/SDWebImage/pull/1199)
## [3.7.2 Updated patch release for 3.7.0 on Mar 17th, 2015](https://github.com/rs/SDWebImage/releases/tag/3.7.2)
#### Updates
- bumped `libwep` version to `0.4.3`
#### Features:
- implement `SDWebImageDownloaderAllowInvalidSSLCertificates` option - [#937](https://github.com/rs/SDWebImage/pull/937)
- flag to transform animated images (`SDWebImageTransformAnimatedImage`) - [#703](https://github.com/rs/SDWebImage/pull/703)
- allows user to override default `SDWebImageDownloaderOperation` - [#876](https://github.com/rs/SDWebImage/pull/876)
- adds option to decompress images and select prefetcher queue - [#996](https://github.com/rs/SDWebImage/pull/996)
#### Fixes:
- fixed [#809](https://github.com/rs/SDWebImage/issues/809) `cancelAll` crash - [#838](https://github.com/rs/SDWebImage/pull/838)
- fixed [#900](https://github.com/rs/SDWebImage/issues/900) by adding a new flag `SD_LOG_NONE` that allows silencing the SD logs from the Prefetcher
- fixed [#895](https://github.com/rs/SDWebImage/issues/895) unsafe setImage in `setImageWithURL:` - [#896](https://github.com/rs/SDWebImage/pull/896)
- fix `NSNotificationCenter` dispatch on subthreads - [#987](https://github.com/rs/SDWebImage/pull/987)
- fix `SDWebImageDownloader` threading issue - [#104](https://github.com/rs/SDWebImage/pull/104)6
- fixed duplicate failed urls are added into `failedURLs` - [#994](https://github.com/rs/SDWebImage/pull/994)
- increased default `maxConcurrentOperationCount`, fixes [#527](https://github.com/rs/SDWebImage/issues/527) - [#897](https://github.com/rs/SDWebImage/pull/897)
- handle empty urls `NSArray` - [#929](https://github.com/rs/SDWebImage/pull/929)
- decoding webp, depends on source image data alpha status - [#936](https://github.com/rs/SDWebImage/pull/936)
- fix [#610](https://github.com/rs/SDWebImage/issues/610) display progressive jpeg issue - [#840](https://github.com/rs/SDWebImage/pull/840)
- the code from `SDWebImageDownloaderOperation connection:didFailWithError:` should match the code from `connectionDidFinishLoading:`. This fixes [#872](https://github.com/rs/SDWebImage/issues/872) - [7f39e5e](https://github.com/rs/SDWebImage/commit/7f39e5e)
- `304 - Not Modified` HTTP status code handling - [#942](https://github.com/rs/SDWebImage/pull/942)
- cost compute fix - [#941](https://github.com/rs/SDWebImage/pull/941)
- initialise `kPNGSignatureData` data - [#981](https://github.com/rs/SDWebImage/pull/981)
#### Documentation
- documentation updated
## [3.7.1 Patch release for 3.7.0 on Jul 23rd, 2014](https://github.com/rs/SDWebImage/releases/tag/3.7.1)
- fixed `sd_imageOrientationFromImageData:` crash if imageSource is nil - [#819](https://github.com/rs/SDWebImage/pull/819) [#813](https://github.com/rs/SDWebImage/pull/813) [#808](https://github.com/rs/SDWebImage/issues/808) [#828](https://github.com/rs/SDWebImage/issues/828) - temporary fix
- fixed `SDWebImageCombinedOperation cancel` crash (also visible as `SDWebImageManager cancelAll`) - [28109c4](https://github.com/rs/SDWebImage/commit/28109c4) [#798](https://github.com/rs/SDWebImage/issues/798) [#809](https://github.com/rs/SDWebImage/issues/809)
- fixed duplicate symbols when using with webp via pods - [#795](https://github.com/rs/SDWebImage/pull/795)
- fixed missing `mark` from `pragma mark` - [#827](https://github.com/rs/SDWebImage/pull/827)
## [3.7.0 Xcode6, arm64, highlight UIImageView, imageURL ref, NTLM, ... on Jul 14th, 2014](https://github.com/rs/SDWebImage/releases/tag/3.7.0)
## Features
- Add category for imageView's highlighted state `UIImageView+HighlightedWebCache` - [#646](https://github.com/rs/SDWebImage/pull/646) [#765](https://github.com/rs/SDWebImage/pull/765)
- Keep a reference to the image URL - [#560](https://github.com/rs/SDWebImage/pull/560)
- Pass imageURL in completedBlock - [#770](https://github.com/rs/SDWebImage/pull/770)
- Implemented NTLM auth support. Replaced deprecated auth challenge methods from `NSURLConnectionDelegate` - [#711](https://github.com/rs/SDWebImage/pull/711) [50c4d1d](https://github.com/rs/SDWebImage/commit/50c4d1d)
- Ability to suspend image downloaders `SDWebImageDownloader setSuspended:` - [#734](https://github.com/rs/SDWebImage/pull/734)
- Delay the loading of the placeholder image until after load - [#701](https://github.com/rs/SDWebImage/pull/701)
- Ability to save images to cache directly - [#714](https://github.com/rs/SDWebImage/pull/714)
- Support for image orientation - [#764](https://github.com/rs/SDWebImage/pull/764)
- Added async `SDImageCache removeImageForKey:withCompletion:` - [#732](https://github.com/rs/SDWebImage/pull/732) [cd4b925](https://github.com/rs/SDWebImage/commit/cd4b925)
- Exposed cache paths - [#339](https://github.com/rs/SDWebImage/issues/339)
- Exposed `SDWebImageManager cacheKeyForURL:` - [5fd21e5](https://github.com/rs/SDWebImage/commit/5fd21e5)
- Exposing `SDWebImageManager` instance from the `SDWebImagePrefetcher` class - [6c409cd](https://github.com/rs/SDWebImage/commit/6c409cd)
- `SDWebImageManager` uses the shared instance of `SDWebImageDownloader` - [0772019](https://github.com/rs/SDWebImage/commit/0772019)
- Refactor the cancel logic - [#771](https://github.com/rs/SDWebImage/pull/771) [6d01e80](https://github.com/rs/SDWebImage/commit/6d01e80) [23874cd](https://github.com/rs/SDWebImage/commit/23874cd) [a6f11b3](https://github.com/rs/SDWebImage/commit/a6f11b3)
- Added method `SDWebImageManager cachedImageExistsForURL:` to check if an image exists in either the disk OR the memory cache - [#644](https://github.com/rs/SDWebImage/pull/644)
- Added option to use the cached image instead of the placeholder for `UIImageView`. Replaces [#541](https://github.com/rs/SDWebImage/pull/541) - [#599](https://github.com/rs/SDWebImage/issues/599) [30f6726](https://github.com/rs/SDWebImage/commit/30f6726)
- Created workspace + added unit tests target
- Updated documentation - [#476](https://github.com/rs/SDWebImage/issues/476) [#384](https://github.com/rs/SDWebImage/issues/384) [#526](https://github.com/rs/SDWebImage/issues/526) [#376](https://github.com/rs/SDWebImage/pull/376) [a8f5627](https://github.com/rs/SDWebImage/commit/a8f5627)
## Bugfixes
- Fixed Xcode 6 builds - [#741](https://github.com/rs/SDWebImage/pull/741) [0b47342](https://github.com/rs/SDWebImage/commit/0b47342)
- Fixed `diskImageExistsWithKey:` deadlock - [#625](https://github.com/rs/SDWebImage/issues/625) [6e4fbaf](https://github.com/rs/SDWebImage/commit/6e4fbaf)
For consistency, added async methods in `SDWebImageManager` `cachedImageExistsForURL:completion:` and `diskImageExistsForURL:completion:`
- Fixed race condition that causes cancellation of one download operation to stop a run loop that is now used for another download operation. Race is introduced through `performSelector:onThread:withObject:waitUntilDone:` - [#698](https://github.com/rs/SDWebImage/pull/698)
- Fixed race condition between operation cancelation and loading finish - [39db378](https://github.com/rs/SDWebImage/commit/39db378) [#621](https://github.com/rs/SDWebImage/pull/621) [#783](https://github.com/rs/SDWebImage/pull/783)
- Fixed race condition in SDWebImageManager if one operation is cancelled - [f080e38](https://github.com/rs/SDWebImage/commit/f080e38) [#699](https://github.com/rs/SDWebImage/pull/699)
- Fixed issue where cancelled operations aren't removed from `runningOperations` - [#68](https://github.com/rs/SDWebImage/issues/68)
- Should not add url to failedURLs when timeout, cancel and so on - [#766](https://github.com/rs/SDWebImage/pull/766) [#707](https://github.com/rs/SDWebImage/issues/707)
- Fixed potential *object mutated while being enumerated* crash - [#727](https://github.com/rs/SDWebImage/pull/727) [#728](https://github.com/rs/SDWebImage/pull/728) (revert a threading fix from [#727](https://github.com/rs/SDWebImage/pull/727))
- Fixed `NSURLConnection` response statusCode not valid (e.g. 404), downloader never stops its runloop and hangs the operation queue - [#735](https://github.com/rs/SDWebImage/pull/735)
- Fixed `SDWebImageRefreshCached` bug for large images - [#744](https://github.com/rs/SDWebImage/pull/744)
- Added proper handling for `SDWebImageDownloaderLowPriority` - [#713](https://github.com/rs/SDWebImage/issues/713) [#745](https://github.com/rs/SDWebImage/issues/745)
- Fixed fixing potential bug when sending a nil url for UIButton+WebCache - [#761](https://github.com/rs/SDWebImage/issues/761) [#763](https://github.com/rs/SDWebImage/pull/763)
- Fixed issue [#529](https://github.com/rs/SDWebImage/pull/529) - if the `cacheKeyFilter` was set, this was ignored when computing the `scaledImageForKey`. For most of the developers that did not set `cacheKeyFilter`, the code will work exactly the same - [eb91fdd](https://github.com/rs/SDWebImage/commit/eb91fdd)
- Returning error in setImage completedBlock if the url was nil. Added `dispatch_main_async_safe` macro - [#505](https://github.com/rs/SDWebImage/issues/505) [af3e4f8](https://github.com/rs/SDWebImage/commit/af3e4f8)
- Avoid premature completion of prefetcher if request fails - [#751](https://github.com/rs/SDWebImage/pull/751)
- Return nil from `SDScaledImageForKey` if the input image is nil - [#365](https://github.com/rs/SDWebImage/issues/365) [#750](https://github.com/rs/SDWebImage/pull/750)
- Do not load placeholder image if `SDWebImageDelayPlaceholder` option specified - [#780](https://github.com/rs/SDWebImage/pull/780)
- Make sure we call the `startPrefetchingAtIndex:` method from main queue - [#694](https://github.com/rs/SDWebImage/pull/694)
- Save image in cache before calling completion block - [#700](https://github.com/rs/SDWebImage/pull/700)
- Fixed arm64 warnings - [#685](https://github.com/rs/SDWebImage/pull/685) [#720](https://github.com/rs/SDWebImage/pull/720) [#721](https://github.com/rs/SDWebImage/pull/721) [#687](https://github.com/rs/SDWebImage/pull/687)
- Improved logging - [#721](https://github.com/rs/SDWebImage/pull/721)
- Added `SDWebImageCompat.m` to `SDWebImage+MKAnnotation` target
## [3.6 Fix and cleanup on Mar 24th, 2014](https://github.com/rs/SDWebImage/releases/tag/3.6)
## [3.5.4 ARM64 Support on Feb 24th, 2014](https://github.com/rs/SDWebImage/releases/tag/3.5.4)
## [3.5.3 on Jan 7th, 2014](https://github.com/rs/SDWebImage/releases/tag/3.5.3)
## [3.5.2 on Jan 2nd, 2014](https://github.com/rs/SDWebImage/releases/tag/3.5.2)
## [3.5.1 on Dec 3rd, 2013](https://github.com/rs/SDWebImage/releases/tag/3.5.1)
## [3.5 WebP Target, iOS 7, Fixes on Oct 4th, 2013](https://github.com/rs/SDWebImage/releases/tag/3.5)
- Fix iOS 7 related issues
- Move `WebP` support to a dedicated target
- Removed strong reference to `UIImageView` which was causing a crash in the nested block
- Fix timeout issue
- Add some methods that allow to check if an image exists on disk without taking it off disk and decompressing it first
## [3.4 Animated image category, bug fixes on Aug 13th, 2013](https://github.com/rs/SDWebImage/releases/tag/3.4)
- Add `calculateSizeWithCompletionBlock`
- Add multiple download of images for animationImages property of `UIImageView`
- Add background task for disk cleanup [#306](https://github.com/rs/SDWebImage/issues/306)
- Fix dead thread issue on iOS 5 [#444](https://github.com/rs/SDWebImage/pull/444), [#399](https://github.com/rs/SDWebImage/issues/399), [#466](https://github.com/rs/SDWebImage/issues/466)
- Make IO operations cancelable to fix perf issue with heavy images [#462](https://github.com/rs/SDWebImage/issues/462)
- Fix crash `Collection <__NSArrayM: ...> was mutated while being enumerated.` [#471](https://github.com/rs/SDWebImage/pull/471)
## [3.3 WebP, Animated GIF and more on Jun 14th, 2013](https://github.com/rs/SDWebImage/releases/tag/3.3)
- WebP image format support [#410](https://github.com/rs/SDWebImage/issues/410)
- Animated GIF support [#375](https://github.com/rs/SDWebImage/pull/375)
- Custom image cache search paths [#156](https://github.com/rs/SDWebImage/pull/156)
- Bug fixes
## [3.2 Bug fixes on Mar 13th, 2013](https://github.com/rs/SDWebImage/releases/tag/3.2)
- `SDWebImageRefreshCached` download option [#326](https://github.com/rs/SDWebImage/pull/326)
- New `SDWebImageManager` delegate methods [ebd63a88c1](https://github.com/rs/SDWebImage/commit/ebd63a88c116ac7acfbeded5c84d0fffa2443438)
- Fix long standing issue with alpha en JPEGs [#299](https://github.com/rs/SDWebImage/pull/299)
- Add synchronous disk-cache loading method [#297](https://github.com/rs/SDWebImage/pull/297)
- Fix `SDWebImageCacheMemoryOnly` flag
- Bug fixes
## [3.1 Bug fixes on Jan 21st, 2013](https://github.com/rs/SDWebImage/releases/tag/3.1)
## [3.0 Complete rewrite on Nov 29th, 2012](https://github.com/rs/SDWebImage/releases/tag/3.0)
- Complete rewrite of the library using `GCD`, `ARC`, `NSCache` and blocks
- Drop compatibility with iOS 3 and 4
## [2.7.4 Bug fixes on Nov 14th, 2012](https://github.com/rs/SDWebImage/releases/tag/2.7.4)
## [2.7.3 on Nov 3rd, 2012](https://github.com/rs/SDWebImage/releases/tag/2.7.3)
## [2.7.2 on Oct 23rd, 2012](https://github.com/rs/SDWebImage/releases/tag/2.7.2)
## [2.7.1 on Oct 19th, 2012](https://github.com/rs/SDWebImage/releases/tag/2.7.1)
## [2.7 on Sep 8th, 2012](https://github.com/rs/SDWebImage/releases/tag/2.7)
## [2.6 on May 4th, 2012](https://github.com/rs/SDWebImage/releases/tag/2.6)
## [2.5 on Mar 22nd, 2012](https://github.com/rs/SDWebImage/releases/tag/2.5)
## [2.4 on Oct 1st, 2011](https://github.com/rs/SDWebImage/releases/tag/2.4)
## [2.3 on Sep 16th, 2010](https://github.com/rs/SDWebImage/releases/tag/2.3)
## [2.2 on Aug 29th, 2010](https://github.com/rs/SDWebImage/releases/tag/2.2)
## [2.1.0 on Jun 12th, 2010](https://github.com/rs/SDWebImage/releases/tag/2.1.0)
## [2.1 on Jun 12th, 2010](https://github.com/rs/SDWebImage/releases/tag/2.1)
## [2.0.0 on Jun 9th, 2010](https://github.com/rs/SDWebImage/releases/tag/2.0.0)
## [2.0 on Jun 9th, 2010](https://github.com/rs/SDWebImage/releases/tag/2.0)
## [1.0.0 on Dec 31st, 2009](https://github.com/rs/SDWebImage/releases/tag/1.0.0)
## [1.0 on Dec 31st, 2009](https://github.com/rs/SDWebImage/releases/tag/1.0)
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... ...
//
// AppDelegate.h
// SDWebImage Demo
//
// Created by Olivier Poitrey on 09/05/12.
// Copyright (c) 2012 Dailymotion. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface AppDelegate : UIResponder <UIApplicationDelegate>
@property (strong, nonatomic) UIWindow *window;
@property (strong, nonatomic) UINavigationController *navigationController;
@end
... ...
//
// AppDelegate.m
// SDWebImage Demo
//
// Created by Olivier Poitrey on 09/05/12.
// Copyright (c) 2012 Dailymotion. All rights reserved.
//
#import "AppDelegate.h"
#import "MasterViewController.h"
#import <SDWebImage/SDImageCache.h>
@implementation AppDelegate
@synthesize window = _window;
@synthesize navigationController = _navigationController;
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
//Add a custom read-only cache path
NSString *bundledPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"CustomPathImages"];
[[SDImageCache sharedImageCache] addReadOnlyCachePath:bundledPath];
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
MasterViewController *masterViewController = [[MasterViewController alloc] initWithNibName:@"MasterViewController" bundle:nil];
self.navigationController = [[UINavigationController alloc] initWithRootViewController:masterViewController];
self.window.rootViewController = self.navigationController;
[self.window makeKeyAndVisible];
return YES;
}
- (void)applicationWillResignActive:(UIApplication *)application
{
// Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
// Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}
- (void)applicationDidEnterBackground:(UIApplication *)application
{
// Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
// If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}
- (void)applicationWillEnterForeground:(UIApplication *)application
{
// Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
}
- (void)applicationDidBecomeActive:(UIApplication *)application
{
// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}
- (void)applicationWillTerminate:(UIApplication *)application
{
// Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}
@end
... ...
//
// DetailViewController.h
// SDWebImage Demo
//
// Created by Olivier Poitrey on 09/05/12.
// Copyright (c) 2012 Dailymotion. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface DetailViewController : UIViewController
@property (strong, nonatomic) NSURL *imageURL;
@property (strong, nonatomic) IBOutlet UIImageView *imageView;
@end
... ...
//
// DetailViewController.m
// SDWebImage Demo
//
// Created by Olivier Poitrey on 09/05/12.
// Copyright (c) 2012 Dailymotion. All rights reserved.
//
#import "DetailViewController.h"
#import <SDWebImage/UIImageView+WebCache.h>
@interface DetailViewController ()
- (void)configureView;
@end
@implementation DetailViewController
@synthesize imageURL = _imageURL;
@synthesize imageView = _imageView;
#pragma mark - Managing the detail item
- (void)setImageURL:(NSURL *)imageURL
{
if (_imageURL != imageURL)
{
_imageURL = imageURL;
[self configureView];
}
}
- (void)configureView
{
if (self.imageURL) {
__block UIActivityIndicatorView *activityIndicator;
__weak UIImageView *weakImageView = self.imageView;
[self.imageView sd_setImageWithURL:self.imageURL
placeholderImage:nil
options:SDWebImageProgressiveDownload
progress:^(NSInteger receivedSize, NSInteger expectedSize) {
if (!activityIndicator) {
[weakImageView addSubview:activityIndicator = [UIActivityIndicatorView.alloc initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray]];
activityIndicator.center = weakImageView.center;
[activityIndicator startAnimating];
}
}
completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
[activityIndicator removeFromSuperview];
activityIndicator = nil;
}];
}
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self configureView];
}
- (void)viewDidUnload
{
[super viewDidUnload];
self.imageView = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
@end
... ...
//
// MasterViewController.h
// SDWebImage Demo
//
// Created by Olivier Poitrey on 09/05/12.
// Copyright (c) 2012 Dailymotion. All rights reserved.
//
#import <UIKit/UIKit.h>
@class DetailViewController;
@interface MasterViewController : UITableViewController
@property (strong, nonatomic) DetailViewController *detailViewController;
@end
... ...
//
// MasterViewController.m
// SDWebImage Demo
//
// Created by Olivier Poitrey on 09/05/12.
// Copyright (c) 2012 Dailymotion. All rights reserved.
//
#import "MasterViewController.h"
#import <SDWebImage/UIImageView+WebCache.h>
#import "DetailViewController.h"
@interface MasterViewController () {
NSArray *_objects;
}
@end
@implementation MasterViewController
@synthesize detailViewController = _detailViewController;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self)
{
self.title = @"SDWebImage";
self.navigationItem.rightBarButtonItem = [UIBarButtonItem.alloc initWithTitle:@"Clear Cache"
style:UIBarButtonItemStylePlain
target:self
action:@selector(flushCache)];
// HTTP NTLM auth example
// Add your NTLM image url to the array below and replace the credentials
[SDWebImageManager sharedManager].imageDownloader.username = @"httpwatch";
[SDWebImageManager sharedManager].imageDownloader.password = @"httpwatch01";
_objects = [NSArray arrayWithObjects:
@"http://www.httpwatch.com/httpgallery/authentication/authenticatedimage/default.aspx?0.35786508303135633", // requires HTTP auth, used to demo the NTLM auth
@"http://assets.sbnation.com/assets/2512203/dogflops.gif",
@"http://www.ioncannon.net/wp-content/uploads/2011/06/test2.webp",
@"http://www.ioncannon.net/wp-content/uploads/2011/06/test9.webp",
@"http://static2.dmcdn.net/static/video/656/177/44771656:jpeg_preview_small.jpg?20120509154705",
@"http://static2.dmcdn.net/static/video/629/228/44822926:jpeg_preview_small.jpg?20120509181018",
@"http://static2.dmcdn.net/static/video/116/367/44763611:jpeg_preview_small.jpg?20120509101749",
@"http://static2.dmcdn.net/static/video/340/086/44680043:jpeg_preview_small.jpg?20120509180118",
@"http://static2.dmcdn.net/static/video/666/645/43546666:jpeg_preview_small.jpg?20120412153140",
@"http://static2.dmcdn.net/static/video/771/577/44775177:jpeg_preview_small.jpg?20120509183230",
@"http://static2.dmcdn.net/static/video/810/508/44805018:jpeg_preview_small.jpg?20120508125339",
@"http://static2.dmcdn.net/static/video/152/008/44800251:jpeg_preview_small.jpg?20120508103336",
@"http://static2.dmcdn.net/static/video/694/741/35147496:jpeg_preview_small.jpg?20120508111445",
@"http://static2.dmcdn.net/static/video/988/667/44766889:jpeg_preview_small.jpg?20120508130425",
@"http://static2.dmcdn.net/static/video/282/467/44764282:jpeg_preview_small.jpg?20120507130637",
@"http://static2.dmcdn.net/static/video/754/657/44756457:jpeg_preview_small.jpg?20120507093012",
@"http://static2.dmcdn.net/static/video/831/107/44701138:jpeg_preview_small.jpg?20120506133917",
@"http://static2.dmcdn.net/static/video/411/057/44750114:jpeg_preview_small.jpg?20120507014914",
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nil];
}
[SDWebImageManager.sharedManager.imageDownloader setValue:@"SDWebImage Demo" forHTTPHeaderField:@"AppName"];
SDWebImageManager.sharedManager.imageDownloader.executionOrder = SDWebImageDownloaderLIFOExecutionOrder;
return self;
}
- (void)flushCache
{
[SDWebImageManager.sharedManager.imageCache clearMemory];
[SDWebImageManager.sharedManager.imageCache clearDisk];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
#pragma mark - Table View
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return _objects.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
[cell.imageView setShowActivityIndicatorView:YES];
[cell.imageView setIndicatorStyle:UIActivityIndicatorViewStyleGray];
cell.textLabel.text = [NSString stringWithFormat:@"Image #%ld", (long)indexPath.row];
cell.imageView.contentMode = UIViewContentModeScaleAspectFill;
[cell.imageView sd_setImageWithURL:[NSURL URLWithString:[_objects objectAtIndex:indexPath.row]]
placeholderImage:[UIImage imageNamed:@"placeholder"] options:indexPath.row == 0 ? SDWebImageRefreshCached : 0];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (!self.detailViewController)
{
self.detailViewController = [[DetailViewController alloc] initWithNibName:@"DetailViewController" bundle:nil];
}
NSString *largeImageURL = [[_objects objectAtIndex:indexPath.row] stringByReplacingOccurrencesOfString:@"small" withString:@"source"];
self.detailViewController.imageURL = [NSURL URLWithString:largeImageURL];
[self.navigationController pushViewController:self.detailViewController animated:YES];
}
@end
... ...
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>en</string>
<key>CFBundleDisplayName</key>
<string>${PRODUCT_NAME}</string>
<key>CFBundleExecutable</key>
<string>${EXECUTABLE_NAME}</string>
<key>CFBundleIdentifier</key>
<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>${PRODUCT_NAME}</string>
<key>CFBundlePackageType</key>
<string>APPL</string>
<key>CFBundleShortVersionString</key>
<string>1.0</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>1.0</string>
<key>LSRequiresIPhoneOS</key>
<true/>
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>
<key>UIRequiredDeviceCapabilities</key>
<array>
<string>armv7</string>
</array>
<key>UISupportedInterfaceOrientations</key>
<array>
<string>UIInterfaceOrientationPortrait</string>
<string>UIInterfaceOrientationLandscapeLeft</string>
<string>UIInterfaceOrientationLandscapeRight</string>
</array>
</dict>
</plist>
... ...
//
// Prefix header for all source files of the 'SDWebImage Demo' target in the 'SDWebImage Demo' project
//
#import <Availability.h>
#ifndef __IPHONE_4_0
#warning "This project uses features only available in iOS SDK 4.0 and later."
#endif
#ifdef __OBJC__
#import <UIKit/UIKit.h>
#import <Foundation/Foundation.h>
#endif
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//
// main.m
// SDWebImage Demo
//
// Created by Olivier Poitrey on 09/05/12.
// Copyright (c) 2012 Dailymotion. All rights reserved.
//
#import <UIKit/UIKit.h>
#import "AppDelegate.h"
int main(int argc, char *argv[])
{
@autoreleasepool {
return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
}
}
... ...
Copyright (c) 2009 Olivier Poitrey <rs@dailymotion.com>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is furnished
to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
... ...
Web Image
=========
[![Build Status](http://img.shields.io/travis/rs/SDWebImage/master.svg?style=flat)](https://travis-ci.org/rs/SDWebImage)
[![Pod Version](http://img.shields.io/cocoapods/v/SDWebImage.svg?style=flat)](http://cocoadocs.org/docsets/SDWebImage/)
[![Pod Platform](http://img.shields.io/cocoapods/p/SDWebImage.svg?style=flat)](http://cocoadocs.org/docsets/SDWebImage/)
[![Pod License](http://img.shields.io/cocoapods/l/SDWebImage.svg?style=flat)](https://www.apache.org/licenses/LICENSE-2.0.html)
[![Dependency Status](https://www.versioneye.com/objective-c/sdwebimage/3.3/badge.svg?style=flat)](https://www.versioneye.com/objective-c/sdwebimage/3.3)
[![Reference Status](https://www.versioneye.com/objective-c/sdwebimage/reference_badge.svg?style=flat)](https://www.versioneye.com/objective-c/sdwebimage/references)
[![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/rs/SDWebImage)
This library provides a category for UIImageView with support for remote images coming from the web.
It provides:
- An UIImageView category adding web image and cache management to the Cocoa Touch framework
- An asynchronous image downloader
- An asynchronous memory + disk image caching with automatic cache expiration handling
- Animated GIF support
- WebP format support
- A background image decompression
- A guarantee that the same URL won't be downloaded several times
- A guarantee that bogus URLs won't be retried again and again
- A guarantee that main thread will never be blocked
- Performances!
- Use GCD and ARC
- Arm64 support
NOTE: The version 3.0 of SDWebImage isn't fully backward compatible with 2.0 and requires iOS 5.1.1
minimum deployment version. If you need iOS < 5.0 support, please use the last [2.0 version](https://github.com/rs/SDWebImage/tree/2.0-compat).
[How is SDWebImage better than X?](https://github.com/rs/SDWebImage/wiki/How-is-SDWebImage-better-than-X%3F)
Who Use It
----------
Find out [who uses SDWebImage](https://github.com/rs/SDWebImage/wiki/Who-Uses-SDWebImage) and add your app to the list.
How To Use
----------
API documentation is available at [CocoaDocs - SDWebImage](http://cocoadocs.org/docsets/SDWebImage/)
### Using UIImageView+WebCache category with UITableView
Just #import the UIImageView+WebCache.h header, and call the sd_setImageWithURL:placeholderImage:
method from the tableView:cellForRowAtIndexPath: UITableViewDataSource method. Everything will be
handled for you, from async downloads to caching management.
```objective-c
#import <SDWebImage/UIImageView+WebCache.h>
...
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *MyIdentifier = @"MyIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier];
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:MyIdentifier] autorelease];
}
// Here we use the new provided sd_setImageWithURL: method to load the web image
[cell.imageView sd_setImageWithURL:[NSURL URLWithString:@"http://www.domain.com/path/to/image.jpg"]
placeholderImage:[UIImage imageNamed:@"placeholder.png"]];
cell.textLabel.text = @"My Text";
return cell;
}
```
### Using blocks
With blocks, you can be notified about the image download progress and whenever the image retrieval
has completed with success or not:
```objective-c
// Here we use the new provided sd_setImageWithURL: method to load the web image
[cell.imageView sd_setImageWithURL:[NSURL URLWithString:@"http://www.domain.com/path/to/image.jpg"]
placeholderImage:[UIImage imageNamed:@"placeholder.png"]
completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {... completion code here ...}];
```
Note: neither your success nor failure block will be call if your image request is canceled before completion.
### Using SDWebImageManager
The SDWebImageManager is the class behind the UIImageView+WebCache category. It ties the
asynchronous downloader with the image cache store. You can use this class directly to benefit
from web image downloading with caching in another context than a UIView (ie: with Cocoa).
Here is a simple example of how to use SDWebImageManager:
```objective-c
SDWebImageManager *manager = [SDWebImageManager sharedManager];
[manager downloadImageWithURL:imageURL
options:0
progress:^(NSInteger receivedSize, NSInteger expectedSize) {
// progression tracking code
}
completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL *imageURL) {
if (image) {
// do something with image
}
}];
```
### Using Asynchronous Image Downloader Independently
It's also possible to use the async image downloader independently:
```objective-c
SDWebImageDownloader *downloader = [SDWebImageDownloader sharedDownloader];
[downloader downloadImageWithURL:imageURL
options:0
progress:^(NSInteger receivedSize, NSInteger expectedSize) {
// progression tracking code
}
completed:^(UIImage *image, NSData *data, NSError *error, BOOL finished) {
if (image && finished) {
// do something with image
}
}];
```
### Using Asynchronous Image Caching Independently
It is also possible to use the async based image cache store independently. SDImageCache
maintains a memory cache and an optional disk cache. Disk cache write operations are performed
asynchronous so it doesn't add unnecessary latency to the UI.
The SDImageCache class provides a singleton instance for convenience but you can create your own
instance if you want to create separated cache namespace.
To lookup the cache, you use the `queryDiskCacheForKey:done:` method. If the method returns nil, it means the cache
doesn't currently own the image. You are thus responsible for generating and caching it. The cache
key is an application unique identifier for the image to cache. It is generally the absolute URL of
the image.
```objective-c
SDImageCache *imageCache = [[SDImageCache alloc] initWithNamespace:@"myNamespace"];
[imageCache queryDiskCacheForKey:myCacheKey done:^(UIImage *image)
{
// image is not nil if image was found
}];
```
By default SDImageCache will lookup the disk cache if an image can't be found in the memory cache.
You can prevent this from happening by calling the alternative method `imageFromMemoryCacheForKey:`.
To store an image into the cache, you use the storeImage:forKey: method:
```objective-c
[[SDImageCache sharedImageCache] storeImage:myImage forKey:myCacheKey];
```
By default, the image will be stored in memory cache as well as on disk cache (asynchronously). If
you want only the memory cache, use the alternative method storeImage:forKey:toDisk: with a negative
third argument.
### Using cache key filter
Sometime, you may not want to use the image URL as cache key because part of the URL is dynamic
(i.e.: for access control purpose). SDWebImageManager provides a way to set a cache key filter that
takes the NSURL as input, and output a cache key NSString.
The following example sets a filter in the application delegate that will remove any query-string from
the URL before to use it as a cache key:
```objective-c
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
SDWebImageManager.sharedManager.cacheKeyFilter = ^(NSURL *url) {
url = [[NSURL alloc] initWithScheme:url.scheme host:url.host path:url.path];
return [url absoluteString];
};
// Your app init code...
return YES;
}
```
Common Problems
---------------
### Using dynamic image size with UITableViewCell
UITableView determines the size of the image by the first image set for a cell. If your remote images
don't have the same size as your placeholder image, you may experience strange anamorphic scaling issue.
The following article gives a way to workaround this issue:
[http://www.wrichards.com/blog/2011/11/sdwebimage-fixed-width-cell-images/](http://www.wrichards.com/blog/2011/11/sdwebimage-fixed-width-cell-images/)
### Handle image refresh
SDWebImage does very aggressive caching by default. It ignores all kind of caching control header returned by the HTTP server and cache the returned images with no time restriction. It implies your images URLs are static URLs pointing to images that never change. If the pointed image happen to change, some parts of the URL should change accordingly.
If you don't control the image server you're using, you may not be able to change the URL when its content is updated. This is the case for Facebook avatar URLs for instance. In such case, you may use the `SDWebImageRefreshCached` flag. This will slightly degrade the performance but will respect the HTTP caching control headers:
``` objective-c
[imageView sd_setImageWithURL:[NSURL URLWithString:@"https://graph.facebook.com/olivier.poitrey/picture"]
placeholderImage:[UIImage imageNamed:@"avatar-placeholder.png"]
options:SDWebImageRefreshCached];
```
### Add a progress indicator
See this category: https://github.com/JJSaccolo/UIActivityIndicator-for-SDWebImage
Installation
------------
There are three ways to use SDWebImage in your project:
- using Cocoapods
- copying all the files into your project
- importing the project as a static library
### Installation with CocoaPods
[CocoaPods](http://cocoapods.org/) is a dependency manager for Objective-C, which automates and simplifies the process of using 3rd-party libraries in your projects. See the [Get Started](http://cocoapods.org/#get_started) section for more details.
#### Podfile
```
platform :ios, '6.1'
pod 'SDWebImage', '~>3.7'
```
If you are using Swift, be sure to add `use_frameworks!` and set your target to iOS 8+:
```
platform :ios, '8.0'
use_frameworks!
```
#### Subspecs
There are 3 subspecs available now: `Core`, `MapKit` and `WebP` (this means you can install only some of the SDWebImage modules. By default, you get just `Core`, so if you need `WebP`, you need to specify it).
Podfile example:
```
pod 'SDWebImage/WebP'
```
### Installation with Carthage (iOS 8+)
[Carthage](https://github.com/Carthage/Carthage) is a lightweight dependency manager for Swift and Objective-C. It leverages CocoaTouch modules and is less invasive than CocoaPods.
To install with carthage, follow the instruction on [Carthage](https://github.com/Carthage/Carthage)
#### Cartfile
```
github "rs/SDWebImage"
```
#### Usage
Swift
If you installed using CocoaPods:
```
import SDWebImage
```
If you installed manually:
```
import WebImage
```
Objective-C
```
@import WebImage;
```
### Installation by cloning the repository
In order to gain access to all the files from the repository, you should clone it.
```
git clone --recursive https://github.com/rs/SDWebImage.git
```
### Add the SDWebImage project to your project
- Download and unzip the last version of the framework from the [download page](https://github.com/rs/SDWebImage/releases)
- Right-click on the project navigator and select "Add Files to "Your Project":
- In the dialog, select SDWebImage.framework:
- Check the "Copy items into destination group's folder (if needed)" checkbox
### Add dependencies
- In you application project app’s target settings, find the "Build Phases" section and open the "Link Binary With Libraries" block:
- Click the "+" button again and select the "ImageIO.framework", this is needed by the progressive download feature:
### Add Linker Flag
Open the "Build Settings" tab, in the "Linking" section, locate the "Other Linker Flags" setting and add the "-ObjC" flag:
![Other Linker Flags](http://dl.dropbox.com/u/123346/SDWebImage/10_other_linker_flags.jpg)
Alternatively, if this causes compilation problems with frameworks that extend optional libraries, such as Parse, RestKit or opencv2, instead of the -ObjC flag use:
```
-force_load SDWebImage.framework/Versions/Current/SDWebImage
```
If you're using Cocoa Pods and have any frameworks that extend optional libraries, such as Parsen RestKit or opencv2, instead of the -ObjC flag use:
```
-force_load $(TARGET_BUILD_DIR)/libPods.a
```
and this:
```
$(inherited)
```
### Import headers in your source files
In the source files where you need to use the library, import the header file:
```objective-c
#import <SDWebImage/UIImageView+WebCache.h>
```
### Build Project
At this point your workspace should build without error. If you are having problem, post to the Issue and the
community can help you solve it.
Future Enhancements
-------------------
- LRU memory cache cleanup instead of reset on memory warning
## Licenses
All source code is licensed under the [MIT License](https://raw.github.com/rs/SDWebImage/master/LICENSE).
... ...
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s.name = 'SDWebImage'
s.version = '3.7.3'
s.platform = :ios, '5.0'
s.license = 'MIT'
s.summary = 'Asynchronous image downloader with cache support with an UIImageView category.'
s.homepage = 'https://github.com/rs/SDWebImage'
s.author = { 'Olivier Poitrey' => 'rs@dailymotion.com' }
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'images coming from the web. It provides an UIImageView category adding web ' \
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'image downloader, an asynchronous memory + disk image caching with automatic ' \
'cache expiration handling, a guarantee that the same URL won\'t be downloaded ' \
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'and performances!'
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end
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... ...
This diff could not be displayed because it is too large.
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//
// MKAnnotationView+WebCache.h
// SDWebImage
//
// Created by Olivier Poitrey on 14/03/12.
// Copyright (c) 2012 Dailymotion. All rights reserved.
//
#import "MapKit/MapKit.h"
#import "SDWebImageManager.h"
/**
* Integrates SDWebImage async downloading and caching of remote images with MKAnnotationView.
*/
@interface MKAnnotationView (WebCache)
/**
* Get the current image URL.
*
* Note that because of the limitations of categories this property can get out of sync
* if you use sd_setImage: directly.
*/
- (NSURL *)sd_imageURL;
/**
* Set the imageView `image` with an `url`.
*
* The download is asynchronous and cached.
*
* @param url The url for the image.
*/
- (void)sd_setImageWithURL:(NSURL *)url;
/**
* Set the imageView `image` with an `url` and a placeholder.
*
* The download is asynchronous and cached.
*
* @param url The url for the image.
* @param placeholder The image to be set initially, until the image request finishes.
* @see sd_setImageWithURL:placeholderImage:options:
*/
- (void)sd_setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder;
/**
* Set the imageView `image` with an `url`, placeholder and custom options.
*
* The download is asynchronous and cached.
*
* @param url The url for the image.
* @param placeholder The image to be set initially, until the image request finishes.
* @param options The options to use when downloading the image. @see SDWebImageOptions for the possible values.
*/
- (void)sd_setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options;
/**
* Set the imageView `image` with an `url`.
*
* The download is asynchronous and cached.
*
* @param url The url for the image.
* @param completedBlock A block called when operation has been completed. This block has no return value
* and takes the requested UIImage as first parameter. In case of error the image parameter
* is nil and the second parameter may contain an NSError. The third parameter is a Boolean
* indicating if the image was retrieved from the local cache or from the network.
* The fourth parameter is the original image url.
*/
- (void)sd_setImageWithURL:(NSURL *)url completed:(SDWebImageCompletionBlock)completedBlock;
/**
* Set the imageView `image` with an `url`, placeholder.
*
* The download is asynchronous and cached.
*
* @param url The url for the image.
* @param placeholder The image to be set initially, until the image request finishes.
* @param completedBlock A block called when operation has been completed. This block has no return value
* and takes the requested UIImage as first parameter. In case of error the image parameter
* is nil and the second parameter may contain an NSError. The third parameter is a Boolean
* indicating if the image was retrieved from the local cache or from the network.
* The fourth parameter is the original image url.
*/
- (void)sd_setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder completed:(SDWebImageCompletionBlock)completedBlock;
/**
* Set the imageView `image` with an `url`, placeholder and custom options.
*
* The download is asynchronous and cached.
*
* @param url The url for the image.
* @param placeholder The image to be set initially, until the image request finishes.
* @param options The options to use when downloading the image. @see SDWebImageOptions for the possible values.
* @param completedBlock A block called when operation has been completed. This block has no return value
* and takes the requested UIImage as first parameter. In case of error the image parameter
* is nil and the second parameter may contain an NSError. The third parameter is a Boolean
* indicating if the image was retrieved from the local cache or from the network.
* The fourth parameter is the original image url.
*/
- (void)sd_setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options completed:(SDWebImageCompletionBlock)completedBlock;
/**
* Cancel the current download
*/
- (void)sd_cancelCurrentImageLoad;
@end
@interface MKAnnotationView (WebCacheDeprecated)
- (NSURL *)imageURL __deprecated_msg("Use `sd_imageURL`");
- (void)setImageWithURL:(NSURL *)url __deprecated_msg("Method deprecated. Use `sd_setImageWithURL:`");
- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder __deprecated_msg("Method deprecated. Use `sd_setImageWithURL:placeholderImage:`");
- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options __deprecated_msg("Method deprecated. Use `sd_setImageWithURL:placeholderImage:options:`");
- (void)setImageWithURL:(NSURL *)url completed:(SDWebImageCompletedBlock)completedBlock __deprecated_msg("Method deprecated. Use `sd_setImageWithURL:completed:`");
- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder completed:(SDWebImageCompletedBlock)completedBlock __deprecated_msg("Method deprecated. Use `sd_setImageWithURL:placeholderImage:completed:`");
- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options completed:(SDWebImageCompletedBlock)completedBlock __deprecated_msg("Method deprecated. Use `sd_setImageWithURL:placeholderImage:options:completed:`");
- (void)cancelCurrentImageLoad __deprecated_msg("Use `sd_cancelCurrentImageLoad`");
@end
... ...
//
// MKAnnotationView+WebCache.m
// SDWebImage
//
// Created by Olivier Poitrey on 14/03/12.
// Copyright (c) 2012 Dailymotion. All rights reserved.
//
#import "MKAnnotationView+WebCache.h"
#import "objc/runtime.h"
#import "UIView+WebCacheOperation.h"
static char imageURLKey;
@implementation MKAnnotationView (WebCache)
- (NSURL *)sd_imageURL {
return objc_getAssociatedObject(self, &imageURLKey);
}
- (void)sd_setImageWithURL:(NSURL *)url {
[self sd_setImageWithURL:url placeholderImage:nil options:0 completed:nil];
}
- (void)sd_setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder {
[self sd_setImageWithURL:url placeholderImage:placeholder options:0 completed:nil];
}
- (void)sd_setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options {
[self sd_setImageWithURL:url placeholderImage:placeholder options:options completed:nil];
}
- (void)sd_setImageWithURL:(NSURL *)url completed:(SDWebImageCompletionBlock)completedBlock {
[self sd_setImageWithURL:url placeholderImage:nil options:0 completed:completedBlock];
}
- (void)sd_setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder completed:(SDWebImageCompletionBlock)completedBlock {
[self sd_setImageWithURL:url placeholderImage:placeholder options:0 completed:completedBlock];
}
- (void)sd_setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options completed:(SDWebImageCompletionBlock)completedBlock {
[self sd_cancelCurrentImageLoad];
objc_setAssociatedObject(self, &imageURLKey, url, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
self.image = placeholder;
if (url) {
__weak __typeof(self)wself = self;
id <SDWebImageOperation> operation = [SDWebImageManager.sharedManager downloadImageWithURL:url options:options progress:nil completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL *imageURL) {
if (!wself) return;
dispatch_main_sync_safe(^{
__strong MKAnnotationView *sself = wself;
if (!sself) return;
if (image) {
sself.image = image;
}
if (completedBlock && finished) {
completedBlock(image, error, cacheType, url);
}
});
}];
[self sd_setImageLoadOperation:operation forKey:@"MKAnnotationViewImage"];
} else {
dispatch_main_async_safe(^{
NSError *error = [NSError errorWithDomain:SDWebImageErrorDomain code:-1 userInfo:@{NSLocalizedDescriptionKey : @"Trying to load a nil url"}];
if (completedBlock) {
completedBlock(nil, error, SDImageCacheTypeNone, url);
}
});
}
}
- (void)sd_cancelCurrentImageLoad {
[self sd_cancelImageLoadOperationWithKey:@"MKAnnotationViewImage"];
}
@end
@implementation MKAnnotationView (WebCacheDeprecated)
- (NSURL *)imageURL {
return [self sd_imageURL];
}
- (void)setImageWithURL:(NSURL *)url {
[self sd_setImageWithURL:url placeholderImage:nil options:0 completed:nil];
}
- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder {
[self sd_setImageWithURL:url placeholderImage:placeholder options:0 completed:nil];
}
- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options {
[self sd_setImageWithURL:url placeholderImage:placeholder options:options completed:nil];
}
- (void)setImageWithURL:(NSURL *)url completed:(SDWebImageCompletedBlock)completedBlock {
[self sd_setImageWithURL:url placeholderImage:nil options:0 completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
if (completedBlock) {
completedBlock(image, error, cacheType);
}
}];
}
- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder completed:(SDWebImageCompletedBlock)completedBlock {
[self sd_setImageWithURL:url placeholderImage:placeholder options:0 completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
if (completedBlock) {
completedBlock(image, error, cacheType);
}
}];
}
- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options completed:(SDWebImageCompletedBlock)completedBlock {
[self sd_setImageWithURL:url placeholderImage:placeholder options:options completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
if (completedBlock) {
completedBlock(image, error, cacheType);
}
}];
}
- (void)cancelCurrentImageLoad {
[self sd_cancelCurrentImageLoad];
}
@end
... ...
//
// Created by Fabrice Aneche on 06/01/14.
// Copyright (c) 2014 Dailymotion. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface NSData (ImageContentType)
/**
* Compute the content type for an image data
*
* @param data the input data
*
* @return the content type as string (i.e. image/jpeg, image/gif)
*/
+ (NSString *)sd_contentTypeForImageData:(NSData *)data;
@end
@interface NSData (ImageContentTypeDeprecated)
+ (NSString *)contentTypeForImageData:(NSData *)data __deprecated_msg("Use `sd_contentTypeForImageData:`");
@end
... ...
//
// Created by Fabrice Aneche on 06/01/14.
// Copyright (c) 2014 Dailymotion. All rights reserved.
//
#import "NSData+ImageContentType.h"
@implementation NSData (ImageContentType)
+ (NSString *)sd_contentTypeForImageData:(NSData *)data {
uint8_t c;
[data getBytes:&c length:1];
switch (c) {
case 0xFF:
return @"image/jpeg";
case 0x89:
return @"image/png";
case 0x47:
return @"image/gif";
case 0x49:
case 0x4D:
return @"image/tiff";
case 0x52:
// R as RIFF for WEBP
if ([data length] < 12) {
return nil;
}
NSString *testString = [[NSString alloc] initWithData:[data subdataWithRange:NSMakeRange(0, 12)] encoding:NSASCIIStringEncoding];
if ([testString hasPrefix:@"RIFF"] && [testString hasSuffix:@"WEBP"]) {
return @"image/webp";
}
return nil;
}
return nil;
}
@end
@implementation NSData (ImageContentTypeDeprecated)
+ (NSString *)contentTypeForImageData:(NSData *)data {
return [self sd_contentTypeForImageData:data];
}
@end
... ...
/*
* This file is part of the SDWebImage package.
* (c) Olivier Poitrey <rs@dailymotion.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
#import <Foundation/Foundation.h>
#import "SDWebImageCompat.h"
typedef NS_ENUM(NSInteger, SDImageCacheType) {
/**
* The image wasn't available the SDWebImage caches, but was downloaded from the web.
*/
SDImageCacheTypeNone,
/**
* The image was obtained from the disk cache.
*/
SDImageCacheTypeDisk,
/**
* The image was obtained from the memory cache.
*/
SDImageCacheTypeMemory
};
typedef void(^SDWebImageQueryCompletedBlock)(UIImage *image, SDImageCacheType cacheType);
typedef void(^SDWebImageCheckCacheCompletionBlock)(BOOL isInCache);
typedef void(^SDWebImageCalculateSizeBlock)(NSUInteger fileCount, NSUInteger totalSize);
/**
* SDImageCache maintains a memory cache and an optional disk cache. Disk cache write operations are performed
* asynchronous so it doesn’t add unnecessary latency to the UI.
*/
@interface SDImageCache : NSObject
/**
* Decompressing images that are downloaded and cached can improve performance but can consume lot of memory.
* Defaults to YES. Set this to NO if you are experiencing a crash due to excessive memory consumption.
*/
@property (assign, nonatomic) BOOL shouldDecompressImages;
/**
* disable iCloud backup [defaults to YES]
*/
@property (assign, nonatomic) BOOL shouldDisableiCloud;
/**
* use memory cache [defaults to YES]
*/
@property (assign, nonatomic) BOOL shouldCacheImagesInMemory;
/**
* The maximum "total cost" of the in-memory image cache. The cost function is the number of pixels held in memory.
*/
@property (assign, nonatomic) NSUInteger maxMemoryCost;
/**
* The maximum number of objects the cache should hold.
*/
@property (assign, nonatomic) NSUInteger maxMemoryCountLimit;
/**
* The maximum length of time to keep an image in the cache, in seconds
*/
@property (assign, nonatomic) NSInteger maxCacheAge;
/**
* The maximum size of the cache, in bytes.
*/
@property (assign, nonatomic) NSUInteger maxCacheSize;
/**
* Returns global shared cache instance
*
* @return SDImageCache global instance
*/
+ (SDImageCache *)sharedImageCache;
/**
* Init a new cache store with a specific namespace
*
* @param ns The namespace to use for this cache store
*/
- (id)initWithNamespace:(NSString *)ns;
/**
* Init a new cache store with a specific namespace and directory
*
* @param ns The namespace to use for this cache store
* @param directory Directory to cache disk images in
*/
- (id)initWithNamespace:(NSString *)ns diskCacheDirectory:(NSString *)directory;
-(NSString *)makeDiskCachePath:(NSString*)fullNamespace;
/**
* Add a read-only cache path to search for images pre-cached by SDImageCache
* Useful if you want to bundle pre-loaded images with your app
*
* @param path The path to use for this read-only cache path
*/
- (void)addReadOnlyCachePath:(NSString *)path;
/**
* Store an image into memory and disk cache at the given key.
*
* @param image The image to store
* @param key The unique image cache key, usually it's image absolute URL
*/
- (void)storeImage:(UIImage *)image forKey:(NSString *)key;
/**
* Store an image into memory and optionally disk cache at the given key.
*
* @param image The image to store
* @param key The unique image cache key, usually it's image absolute URL
* @param toDisk Store the image to disk cache if YES
*/
- (void)storeImage:(UIImage *)image forKey:(NSString *)key toDisk:(BOOL)toDisk;
/**
* Store an image into memory and optionally disk cache at the given key.
*
* @param image The image to store
* @param recalculate BOOL indicates if imageData can be used or a new data should be constructed from the UIImage
* @param imageData The image data as returned by the server, this representation will be used for disk storage
* instead of converting the given image object into a storable/compressed image format in order
* to save quality and CPU
* @param key The unique image cache key, usually it's image absolute URL
* @param toDisk Store the image to disk cache if YES
*/
- (void)storeImage:(UIImage *)image recalculateFromImage:(BOOL)recalculate imageData:(NSData *)imageData forKey:(NSString *)key toDisk:(BOOL)toDisk;
/**
* Query the disk cache asynchronously.
*
* @param key The unique key used to store the wanted image
*/
- (NSOperation *)queryDiskCacheForKey:(NSString *)key done:(SDWebImageQueryCompletedBlock)doneBlock;
/**
* Query the memory cache synchronously.
*
* @param key The unique key used to store the wanted image
*/
- (UIImage *)imageFromMemoryCacheForKey:(NSString *)key;
/**
* Query the disk cache synchronously after checking the memory cache.
*
* @param key The unique key used to store the wanted image
*/
- (UIImage *)imageFromDiskCacheForKey:(NSString *)key;
/**
* Remove the image from memory and disk cache synchronously
*
* @param key The unique image cache key
*/
- (void)removeImageForKey:(NSString *)key;
/**
* Remove the image from memory and disk cache asynchronously
*
* @param key The unique image cache key
* @param completion An block that should be executed after the image has been removed (optional)
*/
- (void)removeImageForKey:(NSString *)key withCompletion:(SDWebImageNoParamsBlock)completion;
/**
* Remove the image from memory and optionally disk cache asynchronously
*
* @param key The unique image cache key
* @param fromDisk Also remove cache entry from disk if YES
*/
- (void)removeImageForKey:(NSString *)key fromDisk:(BOOL)fromDisk;
/**
* Remove the image from memory and optionally disk cache asynchronously
*
* @param key The unique image cache key
* @param fromDisk Also remove cache entry from disk if YES
* @param completion An block that should be executed after the image has been removed (optional)
*/
- (void)removeImageForKey:(NSString *)key fromDisk:(BOOL)fromDisk withCompletion:(SDWebImageNoParamsBlock)completion;
/**
* Clear all memory cached images
*/
- (void)clearMemory;
/**
* Clear all disk cached images. Non-blocking method - returns immediately.
* @param completion An block that should be executed after cache expiration completes (optional)
*/
- (void)clearDiskOnCompletion:(SDWebImageNoParamsBlock)completion;
/**
* Clear all disk cached images
* @see clearDiskOnCompletion:
*/
- (void)clearDisk;
/**
* Remove all expired cached image from disk. Non-blocking method - returns immediately.
* @param completionBlock An block that should be executed after cache expiration completes (optional)
*/
- (void)cleanDiskWithCompletionBlock:(SDWebImageNoParamsBlock)completionBlock;
/**
* Remove all expired cached image from disk
* @see cleanDiskWithCompletionBlock:
*/
- (void)cleanDisk;
/**
* Get the size used by the disk cache
*/
- (NSUInteger)getSize;
/**
* Get the number of images in the disk cache
*/
- (NSUInteger)getDiskCount;
/**
* Asynchronously calculate the disk cache's size.
*/
- (void)calculateSizeWithCompletionBlock:(SDWebImageCalculateSizeBlock)completionBlock;
/**
* Async check if image exists in disk cache already (does not load the image)
*
* @param key the key describing the url
* @param completionBlock the block to be executed when the check is done.
* @note the completion block will be always executed on the main queue
*/
- (void)diskImageExistsWithKey:(NSString *)key completion:(SDWebImageCheckCacheCompletionBlock)completionBlock;
/**
* Check if image exists in disk cache already (does not load the image)
*
* @param key the key describing the url
*
* @return YES if an image exists for the given key
*/
- (BOOL)diskImageExistsWithKey:(NSString *)key;
/**
* Get the cache path for a certain key (needs the cache path root folder)
*
* @param key the key (can be obtained from url using cacheKeyForURL)
* @param path the cache path root folder
*
* @return the cache path
*/
- (NSString *)cachePathForKey:(NSString *)key inPath:(NSString *)path;
/**
* Get the default cache path for a certain key
*
* @param key the key (can be obtained from url using cacheKeyForURL)
*
* @return the default cache path
*/
- (NSString *)defaultCachePathForKey:(NSString *)key;
@end
... ...
/*
* This file is part of the SDWebImage package.
* (c) Olivier Poitrey <rs@dailymotion.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
#import "SDImageCache.h"
#import "SDWebImageDecoder.h"
#import "UIImage+MultiFormat.h"
#import <CommonCrypto/CommonDigest.h>
// See https://github.com/rs/SDWebImage/pull/1141 for discussion
@interface AutoPurgeCache : NSCache
@end
@implementation AutoPurgeCache
- (id)init
{
self = [super init];
if (self) {
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(removeAllObjects) name:UIApplicationDidReceiveMemoryWarningNotification object:nil];
}
return self;
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationDidReceiveMemoryWarningNotification object:nil];
}
@end
static const NSInteger kDefaultCacheMaxCacheAge = 60 * 60 * 24 * 7; // 1 week
// PNG signature bytes and data (below)
static unsigned char kPNGSignatureBytes[8] = {0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A};
static NSData *kPNGSignatureData = nil;
BOOL ImageDataHasPNGPreffix(NSData *data);
BOOL ImageDataHasPNGPreffix(NSData *data) {
NSUInteger pngSignatureLength = [kPNGSignatureData length];
if ([data length] >= pngSignatureLength) {
if ([[data subdataWithRange:NSMakeRange(0, pngSignatureLength)] isEqualToData:kPNGSignatureData]) {
return YES;
}
}
return NO;
}
FOUNDATION_STATIC_INLINE NSUInteger SDCacheCostForImage(UIImage *image) {
return image.size.height * image.size.width * image.scale * image.scale;
}
@interface SDImageCache ()
@property (strong, nonatomic) NSCache *memCache;
@property (strong, nonatomic) NSString *diskCachePath;
@property (strong, nonatomic) NSMutableArray *customPaths;
@property (SDDispatchQueueSetterSementics, nonatomic) dispatch_queue_t ioQueue;
@end
@implementation SDImageCache {
NSFileManager *_fileManager;
}
+ (SDImageCache *)sharedImageCache {
static dispatch_once_t once;
static id instance;
dispatch_once(&once, ^{
instance = [self new];
});
return instance;
}
- (id)init {
return [self initWithNamespace:@"default"];
}
- (id)initWithNamespace:(NSString *)ns {
NSString *path = [self makeDiskCachePath:ns];
return [self initWithNamespace:ns diskCacheDirectory:path];
}
- (id)initWithNamespace:(NSString *)ns diskCacheDirectory:(NSString *)directory {
if ((self = [super init])) {
NSString *fullNamespace = [@"com.hackemist.SDWebImageCache." stringByAppendingString:ns];
// initialise PNG signature data
kPNGSignatureData = [NSData dataWithBytes:kPNGSignatureBytes length:8];
// Create IO serial queue
_ioQueue = dispatch_queue_create("com.hackemist.SDWebImageCache", DISPATCH_QUEUE_SERIAL);
// Init default values
_maxCacheAge = kDefaultCacheMaxCacheAge;
// Init the memory cache
_memCache = [[AutoPurgeCache alloc] init];
_memCache.name = fullNamespace;
// Init the disk cache
if (directory != nil) {
_diskCachePath = [directory stringByAppendingPathComponent:fullNamespace];
} else {
NSString *path = [self makeDiskCachePath:ns];
_diskCachePath = path;
}
// Set decompression to YES
_shouldDecompressImages = YES;
// memory cache enabled
_shouldCacheImagesInMemory = YES;
// Disable iCloud
_shouldDisableiCloud = YES;
dispatch_sync(_ioQueue, ^{
_fileManager = [NSFileManager new];
});
#if TARGET_OS_IPHONE
// Subscribe to app events
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(clearMemory)
name:UIApplicationDidReceiveMemoryWarningNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(cleanDisk)
name:UIApplicationWillTerminateNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(backgroundCleanDisk)
name:UIApplicationDidEnterBackgroundNotification
object:nil];
#endif
}
return self;
}
- (void)dealloc {
[[NSNotificationCenter defaultCenter] removeObserver:self];
SDDispatchQueueRelease(_ioQueue);
}
- (void)addReadOnlyCachePath:(NSString *)path {
if (!self.customPaths) {
self.customPaths = [NSMutableArray new];
}
if (![self.customPaths containsObject:path]) {
[self.customPaths addObject:path];
}
}
- (NSString *)cachePathForKey:(NSString *)key inPath:(NSString *)path {
NSString *filename = [self cachedFileNameForKey:key];
return [path stringByAppendingPathComponent:filename];
}
- (NSString *)defaultCachePathForKey:(NSString *)key {
return [self cachePathForKey:key inPath:self.diskCachePath];
}
#pragma mark SDImageCache (private)
- (NSString *)cachedFileNameForKey:(NSString *)key {
const char *str = [key UTF8String];
if (str == NULL) {
str = "";
}
unsigned char r[CC_MD5_DIGEST_LENGTH];
CC_MD5(str, (CC_LONG)strlen(str), r);
NSString *filename = [NSString stringWithFormat:@"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%@",
r[0], r[1], r[2], r[3], r[4], r[5], r[6], r[7], r[8], r[9], r[10],
r[11], r[12], r[13], r[14], r[15], [[key pathExtension] isEqualToString:@""] ? @"" : [NSString stringWithFormat:@".%@", [key pathExtension]]];
return filename;
}
#pragma mark ImageCache
// Init the disk cache
-(NSString *)makeDiskCachePath:(NSString*)fullNamespace{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
return [paths[0] stringByAppendingPathComponent:fullNamespace];
}
- (void)storeImage:(UIImage *)image recalculateFromImage:(BOOL)recalculate imageData:(NSData *)imageData forKey:(NSString *)key toDisk:(BOOL)toDisk {
if (!image || !key) {
return;
}
// if memory cache is enabled
if (self.shouldCacheImagesInMemory) {
NSUInteger cost = SDCacheCostForImage(image);
[self.memCache setObject:image forKey:key cost:cost];
}
if (toDisk) {
dispatch_async(self.ioQueue, ^{
NSData *data = imageData;
if (image && (recalculate || !data)) {
#if TARGET_OS_IPHONE
// We need to determine if the image is a PNG or a JPEG
// PNGs are easier to detect because they have a unique signature (http://www.w3.org/TR/PNG-Structure.html)
// The first eight bytes of a PNG file always contain the following (decimal) values:
// 137 80 78 71 13 10 26 10
// If the imageData is nil (i.e. if trying to save a UIImage directly or the image was transformed on download)
// and the image has an alpha channel, we will consider it PNG to avoid losing the transparency
int alphaInfo = CGImageGetAlphaInfo(image.CGImage);
BOOL hasAlpha = !(alphaInfo == kCGImageAlphaNone ||
alphaInfo == kCGImageAlphaNoneSkipFirst ||
alphaInfo == kCGImageAlphaNoneSkipLast);
BOOL imageIsPng = hasAlpha;
// But if we have an image data, we will look at the preffix
if ([imageData length] >= [kPNGSignatureData length]) {
imageIsPng = ImageDataHasPNGPreffix(imageData);
}
if (imageIsPng) {
data = UIImagePNGRepresentation(image);
}
else {
data = UIImageJPEGRepresentation(image, (CGFloat)1.0);
}
#else
data = [NSBitmapImageRep representationOfImageRepsInArray:image.representations usingType: NSJPEGFileType properties:nil];
#endif
}
if (data) {
if (![_fileManager fileExistsAtPath:_diskCachePath]) {
[_fileManager createDirectoryAtPath:_diskCachePath withIntermediateDirectories:YES attributes:nil error:NULL];
}
// get cache Path for image key
NSString *cachePathForKey = [self defaultCachePathForKey:key];
// transform to NSUrl
NSURL *fileURL = [NSURL fileURLWithPath:cachePathForKey];
[_fileManager createFileAtPath:cachePathForKey contents:data attributes:nil];
// disable iCloud backup
if (self.shouldDisableiCloud) {
[fileURL setResourceValue:[NSNumber numberWithBool:YES] forKey:NSURLIsExcludedFromBackupKey error:nil];
}
}
});
}
}
- (void)storeImage:(UIImage *)image forKey:(NSString *)key {
[self storeImage:image recalculateFromImage:YES imageData:nil forKey:key toDisk:YES];
}
- (void)storeImage:(UIImage *)image forKey:(NSString *)key toDisk:(BOOL)toDisk {
[self storeImage:image recalculateFromImage:YES imageData:nil forKey:key toDisk:toDisk];
}
- (BOOL)diskImageExistsWithKey:(NSString *)key {
BOOL exists = NO;
// this is an exception to access the filemanager on another queue than ioQueue, but we are using the shared instance
// from apple docs on NSFileManager: The methods of the shared NSFileManager object can be called from multiple threads safely.
exists = [[NSFileManager defaultManager] fileExistsAtPath:[self defaultCachePathForKey:key]];
return exists;
}
- (void)diskImageExistsWithKey:(NSString *)key completion:(SDWebImageCheckCacheCompletionBlock)completionBlock {
dispatch_async(_ioQueue, ^{
BOOL exists = [_fileManager fileExistsAtPath:[self defaultCachePathForKey:key]];
if (completionBlock) {
dispatch_async(dispatch_get_main_queue(), ^{
completionBlock(exists);
});
}
});
}
- (UIImage *)imageFromMemoryCacheForKey:(NSString *)key {
return [self.memCache objectForKey:key];
}
- (UIImage *)imageFromDiskCacheForKey:(NSString *)key {
// First check the in-memory cache...
UIImage *image = [self imageFromMemoryCacheForKey:key];
if (image) {
return image;
}
// Second check the disk cache...
UIImage *diskImage = [self diskImageForKey:key];
if (diskImage && self.shouldCacheImagesInMemory) {
NSUInteger cost = SDCacheCostForImage(diskImage);
[self.memCache setObject:diskImage forKey:key cost:cost];
}
return diskImage;
}
- (NSData *)diskImageDataBySearchingAllPathsForKey:(NSString *)key {
NSString *defaultPath = [self defaultCachePathForKey:key];
NSData *data = [NSData dataWithContentsOfFile:defaultPath];
if (data) {
return data;
}
NSArray *customPaths = [self.customPaths copy];
for (NSString *path in customPaths) {
NSString *filePath = [self cachePathForKey:key inPath:path];
NSData *imageData = [NSData dataWithContentsOfFile:filePath];
if (imageData) {
return imageData;
}
}
return nil;
}
- (UIImage *)diskImageForKey:(NSString *)key {
NSData *data = [self diskImageDataBySearchingAllPathsForKey:key];
if (data) {
UIImage *image = [UIImage sd_imageWithData:data];
image = [self scaledImageForKey:key image:image];
if (self.shouldDecompressImages) {
image = [UIImage decodedImageWithImage:image];
}
return image;
}
else {
return nil;
}
}
- (UIImage *)scaledImageForKey:(NSString *)key image:(UIImage *)image {
return SDScaledImageForKey(key, image);
}
- (NSOperation *)queryDiskCacheForKey:(NSString *)key done:(SDWebImageQueryCompletedBlock)doneBlock {
if (!doneBlock) {
return nil;
}
if (!key) {
doneBlock(nil, SDImageCacheTypeNone);
return nil;
}
// First check the in-memory cache...
UIImage *image = [self imageFromMemoryCacheForKey:key];
if (image) {
doneBlock(image, SDImageCacheTypeMemory);
return nil;
}
NSOperation *operation = [NSOperation new];
dispatch_async(self.ioQueue, ^{
if (operation.isCancelled) {
return;
}
@autoreleasepool {
UIImage *diskImage = [self diskImageForKey:key];
if (diskImage && self.shouldCacheImagesInMemory) {
NSUInteger cost = SDCacheCostForImage(diskImage);
[self.memCache setObject:diskImage forKey:key cost:cost];
}
dispatch_async(dispatch_get_main_queue(), ^{
doneBlock(diskImage, SDImageCacheTypeDisk);
});
}
});
return operation;
}
- (void)removeImageForKey:(NSString *)key {
[self removeImageForKey:key withCompletion:nil];
}
- (void)removeImageForKey:(NSString *)key withCompletion:(SDWebImageNoParamsBlock)completion {
[self removeImageForKey:key fromDisk:YES withCompletion:completion];
}
- (void)removeImageForKey:(NSString *)key fromDisk:(BOOL)fromDisk {
[self removeImageForKey:key fromDisk:fromDisk withCompletion:nil];
}
- (void)removeImageForKey:(NSString *)key fromDisk:(BOOL)fromDisk withCompletion:(SDWebImageNoParamsBlock)completion {
if (key == nil) {
return;
}
if (self.shouldCacheImagesInMemory) {
[self.memCache removeObjectForKey:key];
}
if (fromDisk) {
dispatch_async(self.ioQueue, ^{
[_fileManager removeItemAtPath:[self defaultCachePathForKey:key] error:nil];
if (completion) {
dispatch_async(dispatch_get_main_queue(), ^{
completion();
});
}
});
} else if (completion){
completion();
}
}
- (void)setMaxMemoryCost:(NSUInteger)maxMemoryCost {
self.memCache.totalCostLimit = maxMemoryCost;
}
- (NSUInteger)maxMemoryCost {
return self.memCache.totalCostLimit;
}
- (NSUInteger)maxMemoryCountLimit {
return self.memCache.countLimit;
}
- (void)setMaxMemoryCountLimit:(NSUInteger)maxCountLimit {
self.memCache.countLimit = maxCountLimit;
}
- (void)clearMemory {
[self.memCache removeAllObjects];
}
- (void)clearDisk {
[self clearDiskOnCompletion:nil];
}
- (void)clearDiskOnCompletion:(SDWebImageNoParamsBlock)completion
{
dispatch_async(self.ioQueue, ^{
[_fileManager removeItemAtPath:self.diskCachePath error:nil];
[_fileManager createDirectoryAtPath:self.diskCachePath
withIntermediateDirectories:YES
attributes:nil
error:NULL];
if (completion) {
dispatch_async(dispatch_get_main_queue(), ^{
completion();
});
}
});
}
- (void)cleanDisk {
[self cleanDiskWithCompletionBlock:nil];
}
- (void)cleanDiskWithCompletionBlock:(SDWebImageNoParamsBlock)completionBlock {
dispatch_async(self.ioQueue, ^{
NSURL *diskCacheURL = [NSURL fileURLWithPath:self.diskCachePath isDirectory:YES];
NSArray *resourceKeys = @[NSURLIsDirectoryKey, NSURLContentModificationDateKey, NSURLTotalFileAllocatedSizeKey];
// This enumerator prefetches useful properties for our cache files.
NSDirectoryEnumerator *fileEnumerator = [_fileManager enumeratorAtURL:diskCacheURL
includingPropertiesForKeys:resourceKeys
options:NSDirectoryEnumerationSkipsHiddenFiles
errorHandler:NULL];
NSDate *expirationDate = [NSDate dateWithTimeIntervalSinceNow:-self.maxCacheAge];
NSMutableDictionary *cacheFiles = [NSMutableDictionary dictionary];
NSUInteger currentCacheSize = 0;
// Enumerate all of the files in the cache directory. This loop has two purposes:
//
// 1. Removing files that are older than the expiration date.
// 2. Storing file attributes for the size-based cleanup pass.
NSMutableArray *urlsToDelete = [[NSMutableArray alloc] init];
for (NSURL *fileURL in fileEnumerator) {
NSDictionary *resourceValues = [fileURL resourceValuesForKeys:resourceKeys error:NULL];
// Skip directories.
if ([resourceValues[NSURLIsDirectoryKey] boolValue]) {
continue;
}
// Remove files that are older than the expiration date;
NSDate *modificationDate = resourceValues[NSURLContentModificationDateKey];
if ([[modificationDate laterDate:expirationDate] isEqualToDate:expirationDate]) {
[urlsToDelete addObject:fileURL];
continue;
}
// Store a reference to this file and account for its total size.
NSNumber *totalAllocatedSize = resourceValues[NSURLTotalFileAllocatedSizeKey];
currentCacheSize += [totalAllocatedSize unsignedIntegerValue];
[cacheFiles setObject:resourceValues forKey:fileURL];
}
for (NSURL *fileURL in urlsToDelete) {
[_fileManager removeItemAtURL:fileURL error:nil];
}
// If our remaining disk cache exceeds a configured maximum size, perform a second
// size-based cleanup pass. We delete the oldest files first.
if (self.maxCacheSize > 0 && currentCacheSize > self.maxCacheSize) {
// Target half of our maximum cache size for this cleanup pass.
const NSUInteger desiredCacheSize = self.maxCacheSize / 2;
// Sort the remaining cache files by their last modification time (oldest first).
NSArray *sortedFiles = [cacheFiles keysSortedByValueWithOptions:NSSortConcurrent
usingComparator:^NSComparisonResult(id obj1, id obj2) {
return [obj1[NSURLContentModificationDateKey] compare:obj2[NSURLContentModificationDateKey]];
}];
// Delete files until we fall below our desired cache size.
for (NSURL *fileURL in sortedFiles) {
if ([_fileManager removeItemAtURL:fileURL error:nil]) {
NSDictionary *resourceValues = cacheFiles[fileURL];
NSNumber *totalAllocatedSize = resourceValues[NSURLTotalFileAllocatedSizeKey];
currentCacheSize -= [totalAllocatedSize unsignedIntegerValue];
if (currentCacheSize < desiredCacheSize) {
break;
}
}
}
}
if (completionBlock) {
dispatch_async(dispatch_get_main_queue(), ^{
completionBlock();
});
}
});
}
- (void)backgroundCleanDisk {
Class UIApplicationClass = NSClassFromString(@"UIApplication");
if(!UIApplicationClass || ![UIApplicationClass respondsToSelector:@selector(sharedApplication)]) {
return;
}
UIApplication *application = [UIApplication performSelector:@selector(sharedApplication)];
__block UIBackgroundTaskIdentifier bgTask = [application beginBackgroundTaskWithExpirationHandler:^{
// Clean up any unfinished task business by marking where you
// stopped or ending the task outright.
[application endBackgroundTask:bgTask];
bgTask = UIBackgroundTaskInvalid;
}];
// Start the long-running task and return immediately.
[self cleanDiskWithCompletionBlock:^{
[application endBackgroundTask:bgTask];
bgTask = UIBackgroundTaskInvalid;
}];
}
- (NSUInteger)getSize {
__block NSUInteger size = 0;
dispatch_sync(self.ioQueue, ^{
NSDirectoryEnumerator *fileEnumerator = [_fileManager enumeratorAtPath:self.diskCachePath];
for (NSString *fileName in fileEnumerator) {
NSString *filePath = [self.diskCachePath stringByAppendingPathComponent:fileName];
NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfItemAtPath:filePath error:nil];
size += [attrs fileSize];
}
});
return size;
}
- (NSUInteger)getDiskCount {
__block NSUInteger count = 0;
dispatch_sync(self.ioQueue, ^{
NSDirectoryEnumerator *fileEnumerator = [_fileManager enumeratorAtPath:self.diskCachePath];
count = [[fileEnumerator allObjects] count];
});
return count;
}
- (void)calculateSizeWithCompletionBlock:(SDWebImageCalculateSizeBlock)completionBlock {
NSURL *diskCacheURL = [NSURL fileURLWithPath:self.diskCachePath isDirectory:YES];
dispatch_async(self.ioQueue, ^{
NSUInteger fileCount = 0;
NSUInteger totalSize = 0;
NSDirectoryEnumerator *fileEnumerator = [_fileManager enumeratorAtURL:diskCacheURL
includingPropertiesForKeys:@[NSFileSize]
options:NSDirectoryEnumerationSkipsHiddenFiles
errorHandler:NULL];
for (NSURL *fileURL in fileEnumerator) {
NSNumber *fileSize;
[fileURL getResourceValue:&fileSize forKey:NSURLFileSizeKey error:NULL];
totalSize += [fileSize unsignedIntegerValue];
fileCount += 1;
}
if (completionBlock) {
dispatch_async(dispatch_get_main_queue(), ^{
completionBlock(fileCount, totalSize);
});
}
});
}
@end
... ...
/*
* This file is part of the SDWebImage package.
* (c) Olivier Poitrey <rs@dailymotion.com>
* (c) Jamie Pinkham
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
#import <TargetConditionals.h>
#ifdef __OBJC_GC__
#error SDWebImage does not support Objective-C Garbage Collection
#endif
#if __IPHONE_OS_VERSION_MIN_REQUIRED != 20000 && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_5_0
#error SDWebImage doesn't support Deployment Target version < 5.0
#endif
#if !TARGET_OS_IPHONE
#import <AppKit/AppKit.h>
#ifndef UIImage
#define UIImage NSImage
#endif
#ifndef UIImageView
#define UIImageView NSImageView
#endif
#else
#import <UIKit/UIKit.h>
#endif
#ifndef NS_ENUM
#define NS_ENUM(_type, _name) enum _name : _type _name; enum _name : _type
#endif
#ifndef NS_OPTIONS
#define NS_OPTIONS(_type, _name) enum _name : _type _name; enum _name : _type
#endif
#if OS_OBJECT_USE_OBJC
#undef SDDispatchQueueRelease
#undef SDDispatchQueueSetterSementics
#define SDDispatchQueueRelease(q)
#define SDDispatchQueueSetterSementics strong
#else
#undef SDDispatchQueueRelease
#undef SDDispatchQueueSetterSementics
#define SDDispatchQueueRelease(q) (dispatch_release(q))
#define SDDispatchQueueSetterSementics assign
#endif
extern UIImage *SDScaledImageForKey(NSString *key, UIImage *image);
typedef void(^SDWebImageNoParamsBlock)();
extern NSString *const SDWebImageErrorDomain;
#define dispatch_main_sync_safe(block)\
if ([NSThread isMainThread]) {\
block();\
} else {\
dispatch_sync(dispatch_get_main_queue(), block);\
}
#define dispatch_main_async_safe(block)\
if ([NSThread isMainThread]) {\
block();\
} else {\
dispatch_async(dispatch_get_main_queue(), block);\
}
... ...
//
// SDWebImageCompat.m
// SDWebImage
//
// Created by Olivier Poitrey on 11/12/12.
// Copyright (c) 2012 Dailymotion. All rights reserved.
//
#import "SDWebImageCompat.h"
#if !__has_feature(objc_arc)
#error SDWebImage is ARC only. Either turn on ARC for the project or use -fobjc-arc flag
#endif
inline UIImage *SDScaledImageForKey(NSString *key, UIImage *image) {
if (!image) {
return nil;
}
if ([image.images count] > 0) {
NSMutableArray *scaledImages = [NSMutableArray array];
for (UIImage *tempImage in image.images) {
[scaledImages addObject:SDScaledImageForKey(key, tempImage)];
}
return [UIImage animatedImageWithImages:scaledImages duration:image.duration];
}
else {
if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)]) {
CGFloat scale = [UIScreen mainScreen].scale;
if (key.length >= 8) {
NSRange range = [key rangeOfString:@"@2x."];
if (range.location != NSNotFound) {
scale = 2.0;
}
range = [key rangeOfString:@"@3x."];
if (range.location != NSNotFound) {
scale = 3.0;
}
}
UIImage *scaledImage = [[UIImage alloc] initWithCGImage:image.CGImage scale:scale orientation:image.imageOrientation];
image = scaledImage;
}
return image;
}
}
NSString *const SDWebImageErrorDomain = @"SDWebImageErrorDomain";
... ...
/*
* This file is part of the SDWebImage package.
* (c) Olivier Poitrey <rs@dailymotion.com>
*
* Created by james <https://github.com/mystcolor> on 9/28/11.
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
#import <Foundation/Foundation.h>
#import "SDWebImageCompat.h"
@interface UIImage (ForceDecode)
+ (UIImage *)decodedImageWithImage:(UIImage *)image;
@end
... ...
/*
* This file is part of the SDWebImage package.
* (c) Olivier Poitrey <rs@dailymotion.com>
*
* Created by james <https://github.com/mystcolor> on 9/28/11.
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
#import "SDWebImageDecoder.h"
@implementation UIImage (ForceDecode)
+ (UIImage *)decodedImageWithImage:(UIImage *)image {
// while downloading huge amount of images
// autorelease the bitmap context
// and all vars to help system to free memory
// when there are memory warning.
// on iOS7, do not forget to call
// [[SDImageCache sharedImageCache] clearMemory];
@autoreleasepool{
// do not decode animated images
if (image.images) { return image; }
CGImageRef imageRef = image.CGImage;
CGImageAlphaInfo alpha = CGImageGetAlphaInfo(imageRef);
BOOL anyAlpha = (alpha == kCGImageAlphaFirst ||
alpha == kCGImageAlphaLast ||
alpha == kCGImageAlphaPremultipliedFirst ||
alpha == kCGImageAlphaPremultipliedLast);
if (anyAlpha) { return image; }
size_t width = CGImageGetWidth(imageRef);
size_t height = CGImageGetHeight(imageRef);
// current
CGColorSpaceModel imageColorSpaceModel = CGColorSpaceGetModel(CGImageGetColorSpace(imageRef));
CGColorSpaceRef colorspaceRef = CGImageGetColorSpace(imageRef);
bool unsupportedColorSpace = (imageColorSpaceModel == 0 || imageColorSpaceModel == -1 || imageColorSpaceModel == kCGColorSpaceModelIndexed);
if (unsupportedColorSpace)
colorspaceRef = CGColorSpaceCreateDeviceRGB();
CGContextRef context = CGBitmapContextCreate(NULL, width,
height,
CGImageGetBitsPerComponent(imageRef),
0,
colorspaceRef,
kCGBitmapByteOrderDefault | kCGImageAlphaPremultipliedFirst);
// Draw the image into the context and retrieve the new image, which will now have an alpha layer
CGContextDrawImage(context, CGRectMake(0, 0, width, height), imageRef);
CGImageRef imageRefWithAlpha = CGBitmapContextCreateImage(context);
UIImage *imageWithAlpha = [UIImage imageWithCGImage:imageRefWithAlpha];
if (unsupportedColorSpace)
CGColorSpaceRelease(colorspaceRef);
CGContextRelease(context);
CGImageRelease(imageRefWithAlpha);
return imageWithAlpha;
}
}
@end
... ...
/*
* This file is part of the SDWebImage package.
* (c) Olivier Poitrey <rs@dailymotion.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
#import <Foundation/Foundation.h>
#import "SDWebImageCompat.h"
#import "SDWebImageOperation.h"
typedef NS_OPTIONS(NSUInteger, SDWebImageDownloaderOptions) {
SDWebImageDownloaderLowPriority = 1 << 0,
SDWebImageDownloaderProgressiveDownload = 1 << 1,
/**
* By default, request prevent the of NSURLCache. With this flag, NSURLCache
* is used with default policies.
*/
SDWebImageDownloaderUseNSURLCache = 1 << 2,
/**
* Call completion block with nil image/imageData if the image was read from NSURLCache
* (to be combined with `SDWebImageDownloaderUseNSURLCache`).
*/
SDWebImageDownloaderIgnoreCachedResponse = 1 << 3,
/**
* In iOS 4+, continue the download of the image if the app goes to background. This is achieved by asking the system for
* extra time in background to let the request finish. If the background task expires the operation will be cancelled.
*/
SDWebImageDownloaderContinueInBackground = 1 << 4,
/**
* Handles cookies stored in NSHTTPCookieStore by setting
* NSMutableURLRequest.HTTPShouldHandleCookies = YES;
*/
SDWebImageDownloaderHandleCookies = 1 << 5,
/**
* Enable to allow untrusted SSL certificates.
* Useful for testing purposes. Use with caution in production.
*/
SDWebImageDownloaderAllowInvalidSSLCertificates = 1 << 6,
/**
* Put the image in the high priority queue.
*/
SDWebImageDownloaderHighPriority = 1 << 7,
};
typedef NS_ENUM(NSInteger, SDWebImageDownloaderExecutionOrder) {
/**
* Default value. All download operations will execute in queue style (first-in-first-out).
*/
SDWebImageDownloaderFIFOExecutionOrder,
/**
* All download operations will execute in stack style (last-in-first-out).
*/
SDWebImageDownloaderLIFOExecutionOrder
};
extern NSString *const SDWebImageDownloadStartNotification;
extern NSString *const SDWebImageDownloadStopNotification;
typedef void(^SDWebImageDownloaderProgressBlock)(NSInteger receivedSize, NSInteger expectedSize);
typedef void(^SDWebImageDownloaderCompletedBlock)(UIImage *image, NSData *data, NSError *error, BOOL finished);
typedef NSDictionary *(^SDWebImageDownloaderHeadersFilterBlock)(NSURL *url, NSDictionary *headers);
/**
* Asynchronous downloader dedicated and optimized for image loading.
*/
@interface SDWebImageDownloader : NSObject
/**
* Decompressing images that are downloaded and cached can improve performance but can consume lot of memory.
* Defaults to YES. Set this to NO if you are experiencing a crash due to excessive memory consumption.
*/
@property (assign, nonatomic) BOOL shouldDecompressImages;
@property (assign, nonatomic) NSInteger maxConcurrentDownloads;
/**
* Shows the current amount of downloads that still need to be downloaded
*/
@property (readonly, nonatomic) NSUInteger currentDownloadCount;
/**
* The timeout value (in seconds) for the download operation. Default: 15.0.
*/
@property (assign, nonatomic) NSTimeInterval downloadTimeout;
/**
* Changes download operations execution order. Default value is `SDWebImageDownloaderFIFOExecutionOrder`.
*/
@property (assign, nonatomic) SDWebImageDownloaderExecutionOrder executionOrder;
/**
* Singleton method, returns the shared instance
*
* @return global shared instance of downloader class
*/
+ (SDWebImageDownloader *)sharedDownloader;
/**
* Set the default URL credential to be set for request operations.
*/
@property (strong, nonatomic) NSURLCredential *urlCredential;
/**
* Set username
*/
@property (strong, nonatomic) NSString *username;
/**
* Set password
*/
@property (strong, nonatomic) NSString *password;
/**
* Set filter to pick headers for downloading image HTTP request.
*
* This block will be invoked for each downloading image request, returned
* NSDictionary will be used as headers in corresponding HTTP request.
*/
@property (nonatomic, copy) SDWebImageDownloaderHeadersFilterBlock headersFilter;
/**
* Set a value for a HTTP header to be appended to each download HTTP request.
*
* @param value The value for the header field. Use `nil` value to remove the header.
* @param field The name of the header field to set.
*/
- (void)setValue:(NSString *)value forHTTPHeaderField:(NSString *)field;
/**
* Returns the value of the specified HTTP header field.
*
* @return The value associated with the header field field, or `nil` if there is no corresponding header field.
*/
- (NSString *)valueForHTTPHeaderField:(NSString *)field;
/**
* Sets a subclass of `SDWebImageDownloaderOperation` as the default
* `NSOperation` to be used each time SDWebImage constructs a request
* operation to download an image.
*
* @param operationClass The subclass of `SDWebImageDownloaderOperation` to set
* as default. Passing `nil` will revert to `SDWebImageDownloaderOperation`.
*/
- (void)setOperationClass:(Class)operationClass;
/**
* Creates a SDWebImageDownloader async downloader instance with a given URL
*
* The delegate will be informed when the image is finish downloaded or an error has happen.
*
* @see SDWebImageDownloaderDelegate
*
* @param url The URL to the image to download
* @param options The options to be used for this download
* @param progressBlock A block called repeatedly while the image is downloading
* @param completedBlock A block called once the download is completed.
* If the download succeeded, the image parameter is set, in case of error,
* error parameter is set with the error. The last parameter is always YES
* if SDWebImageDownloaderProgressiveDownload isn't use. With the
* SDWebImageDownloaderProgressiveDownload option, this block is called
* repeatedly with the partial image object and the finished argument set to NO
* before to be called a last time with the full image and finished argument
* set to YES. In case of error, the finished argument is always YES.
*
* @return A cancellable SDWebImageOperation
*/
- (id <SDWebImageOperation>)downloadImageWithURL:(NSURL *)url
options:(SDWebImageDownloaderOptions)options
progress:(SDWebImageDownloaderProgressBlock)progressBlock
completed:(SDWebImageDownloaderCompletedBlock)completedBlock;
/**
* Sets the download queue suspension state
*/
- (void)setSuspended:(BOOL)suspended;
@end
... ...
/*
* This file is part of the SDWebImage package.
* (c) Olivier Poitrey <rs@dailymotion.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
#import "SDWebImageDownloader.h"
#import "SDWebImageDownloaderOperation.h"
#import <ImageIO/ImageIO.h>
static NSString *const kProgressCallbackKey = @"progress";
static NSString *const kCompletedCallbackKey = @"completed";
@interface SDWebImageDownloader ()
@property (strong, nonatomic) NSOperationQueue *downloadQueue;
@property (weak, nonatomic) NSOperation *lastAddedOperation;
@property (assign, nonatomic) Class operationClass;
@property (strong, nonatomic) NSMutableDictionary *URLCallbacks;
@property (strong, nonatomic) NSMutableDictionary *HTTPHeaders;
// This queue is used to serialize the handling of the network responses of all the download operation in a single queue
@property (SDDispatchQueueSetterSementics, nonatomic) dispatch_queue_t barrierQueue;
@end
@implementation SDWebImageDownloader
+ (void)initialize {
// Bind SDNetworkActivityIndicator if available (download it here: http://github.com/rs/SDNetworkActivityIndicator )
// To use it, just add #import "SDNetworkActivityIndicator.h" in addition to the SDWebImage import
if (NSClassFromString(@"SDNetworkActivityIndicator")) {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
id activityIndicator = [NSClassFromString(@"SDNetworkActivityIndicator") performSelector:NSSelectorFromString(@"sharedActivityIndicator")];
#pragma clang diagnostic pop
// Remove observer in case it was previously added.
[[NSNotificationCenter defaultCenter] removeObserver:activityIndicator name:SDWebImageDownloadStartNotification object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:activityIndicator name:SDWebImageDownloadStopNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:activityIndicator
selector:NSSelectorFromString(@"startActivity")
name:SDWebImageDownloadStartNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:activityIndicator
selector:NSSelectorFromString(@"stopActivity")
name:SDWebImageDownloadStopNotification object:nil];
}
}
+ (SDWebImageDownloader *)sharedDownloader {
static dispatch_once_t once;
static id instance;
dispatch_once(&once, ^{
instance = [self new];
});
return instance;
}
- (id)init {
if ((self = [super init])) {
_operationClass = [SDWebImageDownloaderOperation class];
_shouldDecompressImages = YES;
_executionOrder = SDWebImageDownloaderFIFOExecutionOrder;
_downloadQueue = [NSOperationQueue new];
_downloadQueue.maxConcurrentOperationCount = 6;
_URLCallbacks = [NSMutableDictionary new];
#ifdef SD_WEBP
_HTTPHeaders = [@{@"Accept": @"image/webp,image/*;q=0.8"} mutableCopy];
#else
_HTTPHeaders = [@{@"Accept": @"image/*;q=0.8"} mutableCopy];
#endif
_barrierQueue = dispatch_queue_create("com.hackemist.SDWebImageDownloaderBarrierQueue", DISPATCH_QUEUE_CONCURRENT);
_downloadTimeout = 15.0;
}
return self;
}
- (void)dealloc {
[self.downloadQueue cancelAllOperations];
SDDispatchQueueRelease(_barrierQueue);
}
- (void)setValue:(NSString *)value forHTTPHeaderField:(NSString *)field {
if (value) {
self.HTTPHeaders[field] = value;
}
else {
[self.HTTPHeaders removeObjectForKey:field];
}
}
- (NSString *)valueForHTTPHeaderField:(NSString *)field {
return self.HTTPHeaders[field];
}
- (void)setMaxConcurrentDownloads:(NSInteger)maxConcurrentDownloads {
_downloadQueue.maxConcurrentOperationCount = maxConcurrentDownloads;
}
- (NSUInteger)currentDownloadCount {
return _downloadQueue.operationCount;
}
- (NSInteger)maxConcurrentDownloads {
return _downloadQueue.maxConcurrentOperationCount;
}
- (void)setOperationClass:(Class)operationClass {
_operationClass = operationClass ?: [SDWebImageDownloaderOperation class];
}
- (id <SDWebImageOperation>)downloadImageWithURL:(NSURL *)url options:(SDWebImageDownloaderOptions)options progress:(SDWebImageDownloaderProgressBlock)progressBlock completed:(SDWebImageDownloaderCompletedBlock)completedBlock {
__block SDWebImageDownloaderOperation *operation;
__weak __typeof(self)wself = self;
[self addProgressCallback:progressBlock completedBlock:completedBlock forURL:url createCallback:^{
NSTimeInterval timeoutInterval = wself.downloadTimeout;
if (timeoutInterval == 0.0) {
timeoutInterval = 15.0;
}
// In order to prevent from potential duplicate caching (NSURLCache + SDImageCache) we disable the cache for image requests if told otherwise
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url cachePolicy:(options & SDWebImageDownloaderUseNSURLCache ? NSURLRequestUseProtocolCachePolicy : NSURLRequestReloadIgnoringLocalCacheData) timeoutInterval:timeoutInterval];
request.HTTPShouldHandleCookies = (options & SDWebImageDownloaderHandleCookies);
request.HTTPShouldUsePipelining = YES;
if (wself.headersFilter) {
request.allHTTPHeaderFields = wself.headersFilter(url, [wself.HTTPHeaders copy]);
}
else {
request.allHTTPHeaderFields = wself.HTTPHeaders;
}
operation = [[wself.operationClass alloc] initWithRequest:request
options:options
progress:^(NSInteger receivedSize, NSInteger expectedSize) {
SDWebImageDownloader *sself = wself;
if (!sself) return;
__block NSArray *callbacksForURL;
dispatch_sync(sself.barrierQueue, ^{
callbacksForURL = [sself.URLCallbacks[url] copy];
});
for (NSDictionary *callbacks in callbacksForURL) {
dispatch_async(dispatch_get_main_queue(), ^{
SDWebImageDownloaderProgressBlock callback = callbacks[kProgressCallbackKey];
if (callback) callback(receivedSize, expectedSize);
});
}
}
completed:^(UIImage *image, NSData *data, NSError *error, BOOL finished) {
SDWebImageDownloader *sself = wself;
if (!sself) return;
__block NSArray *callbacksForURL;
dispatch_barrier_sync(sself.barrierQueue, ^{
callbacksForURL = [sself.URLCallbacks[url] copy];
if (finished) {
[sself.URLCallbacks removeObjectForKey:url];
}
});
for (NSDictionary *callbacks in callbacksForURL) {
SDWebImageDownloaderCompletedBlock callback = callbacks[kCompletedCallbackKey];
if (callback) callback(image, data, error, finished);
}
}
cancelled:^{
SDWebImageDownloader *sself = wself;
if (!sself) return;
dispatch_barrier_async(sself.barrierQueue, ^{
[sself.URLCallbacks removeObjectForKey:url];
});
}];
operation.shouldDecompressImages = wself.shouldDecompressImages;
if (wself.urlCredential) {
operation.credential = wself.urlCredential;
} else if (wself.username && wself.password) {
operation.credential = [NSURLCredential credentialWithUser:wself.username password:wself.password persistence:NSURLCredentialPersistenceForSession];
}
if (options & SDWebImageDownloaderHighPriority) {
operation.queuePriority = NSOperationQueuePriorityHigh;
} else if (options & SDWebImageDownloaderLowPriority) {
operation.queuePriority = NSOperationQueuePriorityLow;
}
[wself.downloadQueue addOperation:operation];
if (wself.executionOrder == SDWebImageDownloaderLIFOExecutionOrder) {
// Emulate LIFO execution order by systematically adding new operations as last operation's dependency
[wself.lastAddedOperation addDependency:operation];
wself.lastAddedOperation = operation;
}
}];
return operation;
}
- (void)addProgressCallback:(SDWebImageDownloaderProgressBlock)progressBlock completedBlock:(SDWebImageDownloaderCompletedBlock)completedBlock forURL:(NSURL *)url createCallback:(SDWebImageNoParamsBlock)createCallback {
// The URL will be used as the key to the callbacks dictionary so it cannot be nil. If it is nil immediately call the completed block with no image or data.
if (url == nil) {
if (completedBlock != nil) {
completedBlock(nil, nil, nil, NO);
}
return;
}
dispatch_barrier_sync(self.barrierQueue, ^{
BOOL first = NO;
if (!self.URLCallbacks[url]) {
self.URLCallbacks[url] = [NSMutableArray new];
first = YES;
}
// Handle single download of simultaneous download request for the same URL
NSMutableArray *callbacksForURL = self.URLCallbacks[url];
NSMutableDictionary *callbacks = [NSMutableDictionary new];
if (progressBlock) callbacks[kProgressCallbackKey] = [progressBlock copy];
if (completedBlock) callbacks[kCompletedCallbackKey] = [completedBlock copy];
[callbacksForURL addObject:callbacks];
self.URLCallbacks[url] = callbacksForURL;
if (first) {
createCallback();
}
});
}
- (void)setSuspended:(BOOL)suspended {
[self.downloadQueue setSuspended:suspended];
}
@end
... ...
/*
* This file is part of the SDWebImage package.
* (c) Olivier Poitrey <rs@dailymotion.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
#import <Foundation/Foundation.h>
#import "SDWebImageDownloader.h"
#import "SDWebImageOperation.h"
extern NSString *const SDWebImageDownloadStartNotification;
extern NSString *const SDWebImageDownloadReceiveResponseNotification;
extern NSString *const SDWebImageDownloadStopNotification;
extern NSString *const SDWebImageDownloadFinishNotification;
@interface SDWebImageDownloaderOperation : NSOperation <SDWebImageOperation>
/**
* The request used by the operation's connection.
*/
@property (strong, nonatomic, readonly) NSURLRequest *request;
@property (assign, nonatomic) BOOL shouldDecompressImages;
/**
* Whether the URL connection should consult the credential storage for authenticating the connection. `YES` by default.
*
* This is the value that is returned in the `NSURLConnectionDelegate` method `-connectionShouldUseCredentialStorage:`.
*/
@property (nonatomic, assign) BOOL shouldUseCredentialStorage;
/**
* The credential used for authentication challenges in `-connection:didReceiveAuthenticationChallenge:`.
*
* This will be overridden by any shared credentials that exist for the username or password of the request URL, if present.
*/
@property (nonatomic, strong) NSURLCredential *credential;
/**
* The SDWebImageDownloaderOptions for the receiver.
*/
@property (assign, nonatomic, readonly) SDWebImageDownloaderOptions options;
/**
* The expected size of data.
*/
@property (assign, nonatomic) NSInteger expectedSize;
/**
* The response returned by the operation's connection.
*/
@property (strong, nonatomic) NSURLResponse *response;
/**
* Initializes a `SDWebImageDownloaderOperation` object
*
* @see SDWebImageDownloaderOperation
*
* @param request the URL request
* @param options downloader options
* @param progressBlock the block executed when a new chunk of data arrives.
* @note the progress block is executed on a background queue
* @param completedBlock the block executed when the download is done.
* @note the completed block is executed on the main queue for success. If errors are found, there is a chance the block will be executed on a background queue
* @param cancelBlock the block executed if the download (operation) is cancelled
*
* @return the initialized instance
*/
- (id)initWithRequest:(NSURLRequest *)request
options:(SDWebImageDownloaderOptions)options
progress:(SDWebImageDownloaderProgressBlock)progressBlock
completed:(SDWebImageDownloaderCompletedBlock)completedBlock
cancelled:(SDWebImageNoParamsBlock)cancelBlock;
@end
... ...