ios - WKWebView - 组件失败时不调用 didFailProvisionalNavigation

Question

我试图在 WKWebView 中加载页面组件时记录错误失败，但 didFailProvisionalNavigation不叫。

我删除了 CSS 文件从我的页面进行测试，但没有结果。

当我在谷歌浏览器上加载页面时，我可以找到丢失的文件



WKWebView 初始化为:

@interface MyWebView : UIViewController <WKNavigationDelegate>
@property(strong,nonatomic) WKWebView *loginWebView;
@end

.m 文件

@implementation MyWebView

- (void) initWebView {

    // Set and Load the WebView
    self.webView = [[WKWebView alloc] initWithFrame:self.view.frame];
    self.webView.navigationDelegate = self;
    [self.webView loadRequest:request];
    [self.view addSubview:self.webView];
}

然后我实现了以下方法:

webView:decidePolicyForNavigationAction:decisionHandler:
webView:didStartProvisionalNavigation:
webView:didFinishNavigation:
webView:didFailNavigation:withError:
webView:didFailProvisionalNavigation:withError:

前三个方法被调用，但都没有调用 didFailNavigation也不是 didFailProvisionalNavigation被称为

通过查看 documentation对于 didFailProvisionalNavigation我们有

Called when an error occurs while the web view is loading content.

好吧，内容失败(css文件)并且没有调用该方法，我该怎么做？

PS:我也试过使用 UIWebView !

Answer 1

- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler{
    NSInteger statusCode = ((NSHTTPURLResponse *)navigationResponse.response).statusCode;
    NSLog(@"statusCode:%ld", statusCode);
    if (statusCode/100 == 4 || statusCode/100 == 5) {
        NSLog(@"webview error:%@", navigationResponse.response);
    }
    decisionHandler(WKNavigationResponsePolicyAllow);
}

这行得通!