添加swizzle 交换方法 fix 滚动条延迟 code review by 高强

+//
+//  UINavigation+Pop.h
+//  HuaBanNew
+//
+//  Created by chengxianghe on 15/12/1.
+//  Copyright © 2015年 CXH. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@protocol UINavigationControllerShouldPop <NSObject>
+
+- (BOOL)navigationControllerShouldPop:(UINavigationController *)navigationController;
+
+- (BOOL)navigationControllerShouldStartInteractivePopGestureRecognizer:(UINavigationController *)navigationController;
+@end
+
+@interface UINavigationController (Pop)<UIGestureRecognizerDelegate>
+
+@end

+//
+//  UINavigation+Pop.m
+//  HuaBanNew
+//
+//  Created by chengxianghe on 15/12/1.
+//  Copyright © 2015年 CXH. All rights reserved.
+//
+
+#import "UINavigation+Pop.h"
+#import <objc/objc-runtime.h>
+
+static NSString *const kOriginDelegate = @"koriginDelegate";
+
+@implementation UINavigationController (Pop)
+
++ (void)load {
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        Class class = [self class];
+        // When swizzling a class method, use the following:
+        // Class class = object_getClass((id)self);
+        
+        //customPop_viewDidLoad
+        SEL originalSelectorViewDidLoad = @selector(viewDidLoad);
+        SEL swizzledSelectorViewDidLoad = @selector(customPop_viewDidLoad);
+        [self swizzledClass:class originalSelector:originalSelectorViewDidLoad swizzledSelector:swizzledSelectorViewDidLoad];
+        
+        //customPop_navigationBar:shouldPopItem:
+        SEL originalSelector = @selector(navigationBar:shouldPopItem:);
+        SEL swizzledSelector = @selector(customPop_navigationBar:shouldPopItem:);
+        [self swizzledClass:class originalSelector:originalSelector swizzledSelector:swizzledSelector];
+    });
+}
+
++ (void)swizzledClass:(Class)class originalSelector:(SEL)originalSelector swizzledSelector:(SEL)swizzledSelector  {
+    Method originalMethod = class_getInstanceMethod(class, originalSelector);
+    Method swizzledMethod = class_getInstanceMethod(class, swizzledSelector);
+    
+    BOOL didAddMethod =
+    class_addMethod(class,
+                    originalSelector,
+                    method_getImplementation(swizzledMethod),
+                    method_getTypeEncoding(swizzledMethod));
+    
+    if (didAddMethod) {
+        class_replaceMethod(class,
+                            swizzledSelector,
+                            method_getImplementation(originalMethod),
+                            method_getTypeEncoding(originalMethod));
+    } else {
+        method_exchangeImplementations(originalMethod, swizzledMethod);
+    }
+}
+
+#pragma mark - Method Swizzling
+
+- (void)customPop_viewDidLoad {
+    
+    [self customPop_viewDidLoad];
+    
+    objc_setAssociatedObject(self, [kOriginDelegate UTF8String], self.interactivePopGestureRecognizer.delegate, OBJC_ASSOCIATION_ASSIGN);
+    //    NSLog(@"%@", self.interactivePopGestureRecognizer.delegate);
+    self.interactivePopGestureRecognizer.delegate = (id<UIGestureRecognizerDelegate>) self;
+}
+
+- (BOOL)customPop_navigationBar:(UINavigationBar *)navigationBar shouldPopItem:(UINavigationItem *)item {
+    
+    UIViewController *vc = self.topViewController;
+    if (item != vc.navigationItem) {
+        return true;
+    }
+    
+    //    NSLog(@"navigationBar shouldPopItem:: %@", self);
+    if ([vc conformsToProtocol:@protocol(UINavigationControllerShouldPop)]) {
+        if ([(id<UINavigationControllerShouldPop>)vc navigationControllerShouldPop:self]) {
+            return [self customPop_navigationBar:navigationBar shouldPopItem:item];
+        } else {
+            return false;
+        }
+    } else {
+        return [self customPop_navigationBar:navigationBar shouldPopItem:item];
+    }
+    
+}
+
+- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer {
+    
+    //    NSLog(@"navigationBar gestureRecognizerShouldBegin: %@", self);
+    if (gestureRecognizer == self.interactivePopGestureRecognizer) {
+        UIViewController *vc = self.topViewController;
+        if ([vc conformsToProtocol:@protocol(UINavigationControllerShouldPop)]) {
+            if ([(id<UINavigationControllerShouldPop>)vc navigationControllerShouldStartInteractivePopGestureRecognizer:self]) {
+                return true;
+            } else {
+                return false;
+            }
+        }
+        
+        id<UIGestureRecognizerDelegate> originDelegate = objc_getAssociatedObject(self, [kOriginDelegate UTF8String]);
+        return [originDelegate gestureRecognizerShouldBegin:gestureRecognizer];
+    } else {
+        return true;
+    }
+}
+
+- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
+    
+    if (gestureRecognizer == self.interactivePopGestureRecognizer) {
+        id<UIGestureRecognizerDelegate> originDelegate = objc_getAssociatedObject(self, [kOriginDelegate UTF8String]);
+        return [originDelegate gestureRecognizer:gestureRecognizer shouldReceiveTouch:touch];
+    }
+    
+    return true;
+}
+
+- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
+    
+    if (gestureRecognizer == self.interactivePopGestureRecognizer) {
+        id<UIGestureRecognizerDelegate> originDelegate = objc_getAssociatedObject(self, [kOriginDelegate UTF8String]);
+        return [originDelegate gestureRecognizer:gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:otherGestureRecognizer];
+    }
+    
+    return true;
+}
+
+@end
\ No newline at end of file

@@ -8,6 +8,7 @@
 
 #import <UIKit/UIKit.h>
 #import "YHExplorerViewController.h"
+#import "UINavigation+Pop.h"
 
 @interface YHExplorerView : UIView
 <YHExplorer>
@@ -18,5 +19,8 @@
 @property (nonatomic) BOOL enableProgressBar;
 
 - (UIWebView *)webView;
-
+/**
+ *  移除滚动条
+ */
+- (void)removeProgress;
 @end

@@ -161,4 +161,10 @@
     }
 }
 
+//移除滚动条
+- (void)removeProgress
+{
+    [self.webViewController removeProgress];
+}
+
 @end

@@ -50,6 +50,10 @@
  */
 - (void)unRegisterLinkParser:(id <YHLinkParserDelegate>)parser;
 
+/**
+ *  移除滚动条
+ */
+- (void)removeProgress;
 @end
 
 @interface YHExplorerViewController : CDVViewController

@@ -28,26 +28,7 @@ static float kprogressViewRadius = 2.0f;
 
 @implementation YHExplorerViewController
 
-- (BOOL)navigationControllerShouldPop:(UINavigationController *)navigationController {
-    
-    NSLog(@"%@ 点击\n%s", [self class], __func__);
-    
-    return YES;
-}
-
-- (BOOL)navigationControllerShouldStartInteractivePopGestureRecognizer:(UINavigationController *)navigationController {
-    
-    
-    NSLog(@"%@ 手势\n%s", [self class], __func__);
-    
-    return YES;
-}
 
-
--(void)viewWillDisappear:(BOOL)animated
-{
-    [self.progressView removeFromSuperview];
-}
 - (void)dealloc
 {
     [self.webView stopLoading];
@@ -110,6 +91,15 @@ static float kprogressViewRadius = 2.0f;
     }
 }
 
+
+/**
+ *  移除滚动条
+ */
+- (void)removeProgress
+{
+    [self.progressView removeFromSuperview];
+}
+
 #pragma mark - Override Setter & Getter
 - (NSMutableArray *)linkParsers
 {

@@ -7,6 +7,7 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		340F156D1C310C390002328B /* UINavigation+Pop.m in Sources */ = {isa = PBXBuildFile; fileRef = 340F156C1C310C390002328B /* UINavigation+Pop.m */; };
 		500053DE1AFB164500AF7D48 /* untitled.html in Resources */ = {isa = PBXBuildFile; fileRef = 500053DD1AFB164500AF7D48 /* untitled.html */; };
 		50386F0E1B6F3E43000F62A8 /* YHURLCache.m in Sources */ = {isa = PBXBuildFile; fileRef = 50386EA61B6F3E43000F62A8 /* YHURLCache.m */; };
 		50386F0F1B6F3E43000F62A8 /* config.xml in Resources */ = {isa = PBXBuildFile; fileRef = 50386EA71B6F3E43000F62A8 /* config.xml */; };
@@ -81,6 +82,8 @@
 /* End PBXContainerItemProxy section */
 
 /* Begin PBXFileReference section */
+		340F156B1C310C390002328B /* UINavigation+Pop.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "UINavigation+Pop.h"; sourceTree = "<group>"; };
+		340F156C1C310C390002328B /* UINavigation+Pop.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "UINavigation+Pop.m"; sourceTree = "<group>"; };
 		500053DD1AFB164500AF7D48 /* untitled.html */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.html; path = untitled.html; sourceTree = "<group>"; };
 		50386EA51B6F3E43000F62A8 /* YHURLCache.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = YHURLCache.h; sourceTree = "<group>"; };
 		50386EA61B6F3E43000F62A8 /* YHURLCache.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = YHURLCache.m; sourceTree = "<group>"; };
@@ -218,9 +221,19 @@
 /* End PBXFrameworksBuildPhase section */
 
 /* Begin PBXGroup section */
+		340F156A1C310C390002328B /* UINavigation+Pop */ = {
+			isa = PBXGroup;
+			children = (
+				340F156B1C310C390002328B /* UINavigation+Pop.h */,
+				340F156C1C310C390002328B /* UINavigation+Pop.m */,
+			);
+			path = "UINavigation+Pop";
+			sourceTree = "<group>";
+		};
 		50386EA11B6F3E43000F62A8 /* YHExplorer */ = {
 			isa = PBXGroup;
 			children = (
+				340F156A1C310C390002328B /* UINavigation+Pop */,
 				50386EA21B6F3E43000F62A8 /* Cache */,
 				50386EA71B6F3E43000F62A8 /* config.xml */,
 				50386EA81B6F3E43000F62A8 /* cordova.js */,
@@ -652,6 +665,7 @@
 			files = (
 				50386F321B6F3E43000F62A8 /* YHNativeMotion.m in Sources */,
 				50386F171B6F3E43000F62A8 /* CDVJSON.m in Sources */,
+				340F156D1C310C390002328B /* UINavigation+Pop.m in Sources */,
 				50386F241B6F3E43000F62A8 /* NSMutableArray+QueueAdditions.m in Sources */,
 				50386F361B6F3E43000F62A8 /* YHExplorerView.m in Sources */,
 				50386F261B6F3E43000F62A8 /* CDVYHInterface.m in Sources */,

@@ -10,13 +10,29 @@
 #import "YHExplorerView.h"
 
 @interface WebViewController ()
-<YHExplorerDelegate>
+<YHExplorerDelegate,UINavigationControllerShouldPop>
 @property (weak, nonatomic) IBOutlet YHExplorerView *webView;
 @property (strong, nonatomic) UITextView *tv;
 @end
 
 @implementation WebViewController
 
+- (BOOL)navigationControllerShouldPop:(UINavigationController *)navigationController
+{
+//    NSLog(@"%@ 点击\n%s", [self class], __func__);
+    
+    [self.webView removeProgress];
+    return YES;
+}
+
+- (BOOL)navigationControllerShouldStartInteractivePopGestureRecognizer:(UINavigationController *)navigationController
+{
+//    NSLog(@"%@ 手势\n%s", [self class], __func__);
+    
+    [self.webView removeProgress];
+    return YES;
+}
+
 - (void)dealloc
 {