wkwebview加载空白问题

代理方法中实现：

// 在收到响应后，决定是否跳转
- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler{



WKNavigationResponsePolicy actionPolicy = WKNavigationResponsePolicyAllow;
//这句是必须加上的，不然会异常
decisionHandler(actionPolicy);

 }
// 在发送请求之前，决定是否跳转
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler{

self.title = webView.title;

WKNavigationActionPolicy actionPolicy = WKNavigationActionPolicyAllow;

//这句是必须加上的，不然会异常
decisionHandler(actionPolicy);
}