// 不能喚起微信支付事件處理
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler{
     
   WKNavigationActionPolicy actionPolicy = WKNavigationActionPolicyAllow;
    NSString*urlString = navigationAction.request.URL.absoluteString;

    urlString = [urlString stringByRemovingPercentEncoding];
    if ([urlString containsString:@"weixin://wap/pay?"]) {
        actionPolicy =WKNavigationActionPolicyCancel;
        //解決wkwebview weixin://無法打開微信客戶端的處理
        NSURL*url = [NSURL URLWithString:urlString];
        if ([[UIApplication sharedApplication]respondsToSelector:@selector(openURL:options:completionHandler:)]) {
            [[UIApplication sharedApplication] openURL:url options:@{UIApplicationOpenURLOptionUniversalLinksOnly: @NO} completionHandler:^(BOOL success) {
            }];
        } else {
            [[UIApplication sharedApplication]openURL:webView.URL];
        }
    }
    //允許跳轉(zhuǎn)
    decisionHandler(WKNavigationActionPolicyAllow);
}

// wkwebview打開微信返回app回調(diào)處理
    NSString *url = navigationAction.request.URL.absoluteString;
    if ([url containsString:@"https://wx.tenpay.com/cgi-bin/mmpayweb-bin/checkmweb?"]) {
        //傳入的是微信支付鏈接：https://wx.tenpay.com/cgi-bin/mmpayweb-bin/checkmweb?prepay_id=wx201801291021026cb304f9050743178155&package=3456576571
        //這里把webView設(shè)置成一個(gè)像素點(diǎn)画侣，主要是不影響操作和界面冰悠，主要的作用是設(shè)置referer和調(diào)起微信
        
        WebChatPayH5VIew *h5View = [[WebChatPayH5VIew alloc] initWithFrame:CGRectMake(0, 0, 1, 1)];
        //url是沒有拼接redirect_url微信h5支付鏈接
        [h5View loadingURL:url withIsWebChatURL:NO];
        [self.view addSubview:h5View];
         decisionHandler(WKNavigationActionPolicyCancel);
    } else {
        decisionHandler(WKNavigationActionPolicyAllow);
     }


// 其中WebChatPayH5VIew為uiwebview  里面主要邏輯為如下
        dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{

            dispatch_async(dispatch_get_main_queue(), ^{

                NSURL *url = [request URL];

                NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];

                //設(shè)置授權(quán)域名

                [request setValue:@"www.payment.xy189.cn://" forHTTPHeaderField: @"Referer"];

                [self.myWebView loadRequest:request];

            });

        });