openURL 踩坑

项目里的H5需要打开跳转到支付宝/微信APP，最近刚在webView里新增该功能。

以前常用的是以下两个API

- (BOOL)openURL:(NSURL*)url API_DEPRECATED_WITH_REPLACEMENT("openURL:options:completionHandler:", ios(2.0, 10.0)) NS_EXTENSION_UNAVAILABLE_IOS("");
- (BOOL)canOpenURL:(NSURL *)url API_AVAILABLE(ios(3.0));

这次使用的时候发现已经deprecated了，所以用了推荐的新方法

// Options are specified in the section below for openURL options. An empty options dictionary will result in the same
// behavior as the older openURL call, aside from the fact that this is asynchronous and calls the completion handler rather
// than returning a result.
// The completion handler is called on the main queue.
- (void)openURL:(NSURL*)url options:(NSDictionary<UIApplicationOpenExternalURLOptionsKey, id> *)options completionHandler:(void (^ __nullable)(BOOL success))completion API_AVAILABLE(ios(10.0)) NS_EXTENSION_UNAVAILABLE_IOS("");

那么坑，他就来啦！

以下代码：

        [[UIApplication sharedApplication] openURL:requestURL options:@{@"UIApplicationOpenURLOptionUniversalLinksOnly": @NO} completionHandler:^(BOOL success) {
            NSLog(@"支付宝付款页面跳转状态：%@", success);
            if(!success){
                UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"提示"
                                                               message:@"未检测到支付宝客户端，请安装后重试。"
                                                              delegate:self
                                                     cancelButtonTitle:@"立即安装"
                                                     otherButtonTitles:nil];
                [alert show];
            }
        }];

跳转正常，检测状态正常，但是！！APP不保活了！，从支付宝回来之后，APP会重新加载！！那用户千辛万苦进入到的H5页面，还需要重新走一遍。。

迫于无奈，改回老方法

        if([[UIApplication sharedApplication] canOpenURL:url]){
            [[UIApplication sharedApplication] openURL:url];
        }

以上😮💨