获取Facebook的App链接主机API

Question

我正在尝试使用facebook图形版本方法为IOS获取app_link_hosts,但我收到错误消息.任何人都可以帮我解决这个问题.Facebook和App Link的文档不清楚.

这是代码,

 NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys:
                        @"app name", @"name",
                        theUrl, @"al:ios:url",
                        @"app store id", @"al:ios_id",
                        @"app name", @"al:ios:app_name",
                        @"{\"should_fallback\": false}", @"web",
                        fbAccessToken, @"access_token",
                        nil
                        ];

/* make the API call */

[FBRequestConnection startWithGraphPath:@"/(fb app id)/app_link_hosts"
                             parameters:params
                             HTTPMethod:@"POST"
                      completionHandler:^(
                                          FBRequestConnection *connection,
                                          id result,
                                          NSError *error
                                          ) {
                          /* handle the result */
                          NSLog(@"Result = %@",result);
                          if(error) NSLog(@"error = %@",error);
                      }];

这是我得到的错误,

 error = Error Domain=com.facebook.sdk Code=5 "The operation couldn’t be completed. (com.facebook.sdk error 5.)" UserInfo=0x8c7d4b0 {com.facebook.sdk:HTTPStatusCode=403, com.facebook.sdk:ParsedJSONResponseKey={
body =     {
    error =         {
        code = 200;
        message = "(#200) Permissions error";
        type = OAuthException;
    };
};
code = 403;
}, com.facebook.sdk:ErrorSessionKey=<FBSession: 0x9a53750, state: FBSessionStateOpen, loginHandler: 0x9a51fd0, appID: 443803585653119, urlSchemeSuffix: , tokenCachingStrategy:<FBSessionTokenCachingStrategy: 0x9a52960>, expirationDate: 2014-09-12 10:12:17 +0000, refreshDate: 2014-07-14 12:00:51 +0000, attemptedRefreshDate: 0001-12-30 00:00:00 +0000, permissions:(
installed,
"public_profile",
"publish_actions",
"user_friends"
)>}

Answer 1

我的猜测是您使用的是“用户访问令牌”而不是生成应用程序链接所需的“应用程序令牌”。尝试使用 Graph api explorer - https://developers.facebook.com/tools/explorer/（选择应用程序令牌选项）生成测试链接，因为从客户端设备生成不是一个好的做法。