前言：不要再发文档了，安装文档来的，找不到原因。

步骤：

1.微信开放平台设置：

2.apple-app-site-association 配置

3.上传服务器根目录访问

https://www.dawnhealthy.com/apple-app-site-association

浏览器输入https://www.dawnhealthy.com/ios 提示404。

4.代码注册

 [WXApi registerApp:wechatAppId universalLink:UNIVERSAL_LINK];

static NSString * const UNIVERSAL_LINK = @"https://www.dawnhealthy.com/ios/";

5.Associated Domains 设置

6 xxx.entitlements

实现 continueUserActivity 方法

- (BOOL)application:(UIApplication *)application continueUserActivity:(NSUserActivity *)userActivity restorationHandler:(void (^)(NSArray<id<UIUserActivityRestoring>> * _Nullable))restorationHandler{

 return [WXApi handleOpenUniversalLink:userActivity delegate:self];

出现问题：分享，登录，一切都可以 也不跳转2次，但是分享后 消息下面 显示 未验证应用

调用微信自检函数

 WeChatSDK自检: 0, 1, check passed, 

WeChatSDK自检: 1, 1, check passed, 

WeChatSDK自检: 2, 1, check passed, 

 WeChatSDK自检: 3, 1, check passed, 

WeChatSDK自检: 4, 1, check passed, 

WeChatSDK自检: 5, 1, Universal Link check passed. The application is launched by WeChat via Universal Link, 

WeChatSDK自检: 6, 1, All Check Passed!,