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转自：

https://blog.csdn.net/weixin_39726131/article/details/111483766

#import <WebKit/WKNavigationAction.h>
#import <WebKit/WKNavigationDelegate.h>

- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler
{

    NSURL *URL = navigationAction.request.URL;
    NSString * urlStr = [[URL absoluteString] stringByRemovingPercentEncoding];
    if ([urlStr containsString:@"weixin://wap/pay"] || [urlStr containsString:@"alipay://alipayclient"])
    {
        [[UIApplication sharedApplication] openURL:navigationAction.request.URL];
        decisionHandler(WKNavigationActionPolicyCancel);
    }
    else
    {
        // 在发送请求之前，决定是否跳转
        decisionHandler(WKNavigationActionPolicyAllow);
    }
}