iOS开发-处理H5拉起微信支付返回到Safari情况

项目中有一个情景是使用H5拉起微信支付,支付成功之后却返回到了safari,经过一番百度之后问题得以解决,记录如下(需要将xxxxxxxxxx替换成自己对应的内容)

注意:
1.拉起支付的url中不能包含redirectUrl参数,否则跳转Safiri并打开该参数对应的链接
2.必须设置Referer,格式为app的scheme + //:的形式
3.原理是利用sheme的形式打开app

以WKWebview为例

- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {    
        if ([urlString hasPrefix:@"https://wx.tenpay.com/cgi-bin/mmpayweb-bin/checkmweb"]) { // 处理微信支付
            // 注意,此处须与H5沟通好去掉redirectUrl参数
            NSDictionary *header = navigationAction.request.allHTTPHeaderFields;
            
            if (header[@"Referer"] && [header[@"Referer"] isEqualToString:@"xxxxxxxxxx://"]) { // 如果已经设置过referer
                // 允许跳转
                decisionHandler(WKNavigationActionPolicyAllow);
                return;
            } else {
                // 设置referer
                dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
                    
                    dispatch_async(dispatch_get_main_queue(), ^{
                        NSURL *url = [navigationAction.request URL];
                        NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
                        [request setHTTPMethod:@"GET"];
                        [request setValue:@"xxxxxxxxxx://" forHTTPHeaderField: @"Referer"];
                        [self.webView loadRequest:request];
                    });
                });
                decisionHandler(WKNavigationActionPolicyCancel);
                return;
            }
        }
        
        
        NSURL *url = navigationAction.request.URL;
        // 微信支付协议
        if ([url.scheme isEqualToString:@"weixin"]) {
            if ([url.host isEqualToString:@"wap"]) {
                if ([url.relativePath isEqualToString:@"/pay"]) {
                    if ([[UIApplication sharedApplication] canOpenURL:url]) {
                        [[UIApplication sharedApplication] openURL:url];
                    }
                }
            }
            decisionHandler(WKNavigationActionPolicyCancel);
            return;
        }
        
        // 允许跳转
        decisionHandler(WKNavigationActionPolicyAllow);
}

然后在target中配置urlType,如下(注仅为xxxxxxxxx部分,不包含://):

tmp4f0f14ec.png

至此,问题解决