1.由于蘋果審核，對于應用內應該使用內購功能，卻沒有使用內購，使用了第三方支付的，一律不給通過，廣大開發者就開啟各種腦洞，內嵌H5就是其中一種智慧的結晶，然鵝，支付寶相關文檔比較滯后，相關資料也參差不齊，坑點比較多。下面最坑的一個點就是，H5支付的時候，調起支付寶客戶端不起作用，原因是邏輯寫錯地方了，正確的處理如下：

- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
    if (webView != _webView) {return;}
    
    NSString *urlStr = navigationAction.request.URL.absoluteString;
    if ([urlStr hasPrefix:@"alipays://"] || [urlStr hasPrefix:@"alipay://"]) {
        
        NSURL *alipayURL = [NSURL URLWithString:urlStr];
        
        if (@available(iOS 10.0, *)) {
            [[UIApplication sharedApplication] openURL:alipayURL options:@{UIApplicationOpenURLOptionUniversalLinksOnly: @NO} completionHandler:^(BOOL success) {
                
            }];
        } else {
            // Fallback on earlier versions
            [[UIApplication sharedApplication] openURL:alipayURL];
        }
    }
    
    decisionHandler(WKNavigationActionPolicyAllow);
}

2.寫在下面幾個方法中并不能調起支付寶客戶端

- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler;

- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(null_unspecified WKNavigation *)navigation;