iphone - 如何在iPhone中使用图形API在照片上发表评论？

Question

我有以下代码:

NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:txtComment.text, @"message", nil];
NSString *strPicId = [[Appdel.arrFacebookImages objectAtIndex:Appdel.getIndex] valueForKey:@"id"];
NSString *strPath =[NSString stringWithFormat:@"%@/comments",strPicId];
[FBRequestConnection startWithGraphPath:strPath parameters:params HTTPMethod:@"POST" completionHandler:^(FBRequestConnection *connection, id result1, NSError *error)
 {
     if(!error)
     {
     }
     else
     {
         NSLog(@"ERROR:%@",error);
     }
 }];

但是当它运行时，它会给我以下错误，

   ERROR:Error Domain=com.facebook.sdk Code=5 "The operation couldn’t be completed. (com.facebook.sdk error 5.)" UserInfo=0xb36dd80 {com.facebook.sdk:HTTPStatusCode=403, com.facebook.sdk:ParsedJSONResponseKey={
body =     {
    error =         {
        code = 200;
        message = "(#200) Requires extended permission: publish_stream";
        type = OAuthException;
    };
};

我已经成功登录，并且也收到了相册，照片，评论，但是我无法对任何照片发表评论。

Answer 1

看来您缺少访问 token 中的发布权限。

您可以通过以下方式获得它:

    [FBSession openActiveSessionWithPublishPermissions:@[@"publish_actions"]
                                       defaultAudience:FBSessionDefaultAudienceFriends
                                          allowLoginUI:YES
                                     completionHandler:^(FBSession *session, FBSessionState state, NSError *error) {
        if (FBSession.activeSession.isOpen && !error) {
            // Publish the comment (your code inside) if permission was granted
            [self publishComment];
        }
    }];

那是来自 https://developers.facebook.com/docs/ios/publish-to-feed-ios-sdk/的代码