webview加载失败 刷新 机制 修改

review by 枪兵

@@ -89,4 +89,6 @@
 
 - (void)parseSettingsWithParser:(NSObject <NSXMLParserDelegate>*)delegate;
 
+- (bool)checkAndReinitViewUrl;
+
 @end

@@ -34,6 +34,8 @@ static float kprogressViewRadius = 2.0f;
 
 @property (strong, nonatomic) UIButton *retryButton;    //重试按钮
 
+@property (strong, nonatomic) NSURL *failURL;  //只有当走失败回调时会有失败url
+
 @end
 
 @implementation YHExplorerViewController
@@ -318,9 +320,7 @@ static float kprogressViewRadius = 2.0f;
 {
     [[YHInjectConfigManager sharedInstance] cycleInject:theWebView];
     
-    if (self.originRequest == nil) {
-        self.originRequest = theWebView.request;
-    }
+    self.originRequest = theWebView.request;
     
     NSString *title = [theWebView stringByEvaluatingJavaScriptFromString: @"document.title"];
     _pageTitle = title;
@@ -333,7 +333,6 @@ static float kprogressViewRadius = 2.0f;
     
     NSString *key = [[NSString alloc] initWithFormat:@"WebKit%@%@", @"CacheModel", @"PreferenceKey"];//WebKitCacheModelPreferenceKey
     [[NSUserDefaults standardUserDefaults] setInteger:0 forKey:key];
-    [[NSUserDefaults standardUserDefaults] synchronize];
 }
 
 - (void)webView:(UIWebView*)theWebView didFailLoadWithError:(NSError*)error
@@ -369,6 +368,8 @@ static float kprogressViewRadius = 2.0f;
 // 页面加载完成之后调用 2
 - (void)webView:(WKWebView*)webView didFinishNavigation:(WKNavigation*)navigation
 {
+    self.originRequest = [NSURLRequest requestWithURL:webView.URL];
+
     [self callback_webViewDidFinishLoad];
 }
 // 页面加载失败时调用
@@ -489,6 +490,7 @@ static float kprogressViewRadius = 2.0f;
 
 - (void)callback_webViewDidFinishLoad
 {
+    self.failURL = nil;
     if ([self.progressBar respondsToSelector:@selector(yhExplorer_webViewDidFinishLoad:)]) {
         [self.progressBar yhExplorer_webViewDidFinishLoad:self];
     }
@@ -501,8 +503,26 @@ static float kprogressViewRadius = 2.0f;
 
 - (void)callback_webViewDidFailLoadWithError:(NSError *)error
 {
-    //TODO:错误描述信息
-    [self addRetryButton];
+    NSString *failingURLString = [error.userInfo objectForKey:NSURLErrorFailingURLStringErrorKey];
+    failingURLString = [NSString stringWithFormat:@"%@", failingURLString];
+    
+    if (error.code == -1009) {
+        self.failURL = [NSURL URLWithString:failingURLString];
+        [self addRetryButton];
+    } else {
+        self.failURL = nil;
+        NSString *failDescription = [error.userInfo objectForKey:NSLocalizedDescriptionKey];
+        NSMutableDictionary *errorDict = @{}.mutableCopy;
+        [errorDict setValue:@(error.code) forKey:@"Code"];
+        [errorDict setValue:failDescription forKey:@"Description"];
+        [errorDict setValue:failingURLString forKey:@"URL"];
+        NSString *message = [NSString stringWithFormat:@"%@", errorDict];
+        UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"ERROR" message:message preferredStyle:UIAlertControllerStyleAlert];
+        [alertController addAction:[UIAlertAction actionWithTitle:@"确认"
+                                                            style:UIAlertActionStyleCancel
+                                                          handler:nil]];
+        [self presentViewController:alertController animated:YES completion:nil];
+    }
     if ([self.progressBar respondsToSelector:@selector(yhExplorer_webView:didFailLoadWithError:)])
     {
         [self.progressBar yhExplorer_webView:self didFailLoadWithError:error];
@@ -836,6 +856,7 @@ static float kprogressViewRadius = 2.0f;
     if (!_retryButton) {
         _retryButton = [UIButton buttonWithType:UIButtonTypeCustom];
         _retryButton.frame = self.webView.bounds;
+        _retryButton.backgroundColor = UIColor.whiteColor;
         [_retryButton setImage:[UIImage imageNamed:@"yh_explorer_refresh_icon"] forState:UIControlStateNormal];
         [_retryButton setImage:[UIImage imageNamed:@"yh_explorer_refresh_icon"] forState:UIControlStateHighlighted];
         [_retryButton addTarget:self action:@selector(retryAction:) forControlEvents:UIControlEventTouchUpInside];
@@ -846,8 +867,15 @@ static float kprogressViewRadius = 2.0f;
 - (void)retryAction:(id)sender
 {
     if (!self.isLoading) {
-        [self reloadFromOrigin];
+        if (self.failURL) {
+            [self.webViewEngine loadRequest:[NSURLRequest requestWithURL:self.failURL]];
+        } else {
+            if (![self checkAndReinitViewUrl]) {
+                [self reloadFromOrigin];
+            }
+        }
     }
+    self.failURL = nil;
 }
 
 - (void)addRetryButton