FBSDK共享回调不返回结果 [英] FBSDKSharing Callback not returning results

问题描述

在我的iOS应用中，我有一个Facebook分享按钮，打开一个FBSDKShareDialog：

In my iOS app, I have a Facebook share button, which opens up a FBSDKShareDialog:

-(IBAction)post:(id)sender{

    FBSDKShareLinkContent *content = [[FBSDKShareLinkContent alloc] init];
    content.contentURL = [NSURL URLWithString:self.setShareURL];
    NSLog(@"facebook share url: %@", self.setShareURL);
    content.contentTitle= [NSString stringWithFormat: @"%@'s set", self.username];
    content.contentDescription=@"#spinturntable";

    FBSDKShareDialog *fbdialog = [[FBSDKShareDialog alloc] init];

    if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"fbauth2://"]]){
        fbdialog.mode = FBSDKShareDialogModeNative;
    }
    else {
        fbdialog.mode = FBSDKShareDialogModeBrowser; //or FBSDKShareDialogModeAutomatic
    }
    fbdialog.shareContent = content;
    fbdialog.delegate = self;
    fbdialog.fromViewController = self;
    [fbdialog show];

}

如果用户没有Facebook应用程序，在Safari中打开一个窗口，要求他们登录Facebook。

If the user doesn't have the Facebook app, it opens up a window in Safari that asks them to log into Facebook.

如果用户在没有登录的情况下返回到我的应用程序，则FBSDKSharing didCompleteWithResults回调被调用，但没有结果返回：

If the user returns to my app without having logged in, the FBSDKSharing didCompleteWithResults callback gets called, but no results are returned:

- (void)sharer:(id<FBSDKSharing>)sharer didCompleteWithResults:(NSDictionary *)results
{
        NSLog(@"results: %@", results);
        NSLog(@"posted to facebook successfully!");
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil
                                                    message:@"Posted!"
                                                   delegate:self
                                          cancelButtonTitle:nil
                                          otherButtonTitles:nil];
        [alert show];
        double delayInSeconds = 1.0;
        dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)  (delayInSeconds * NSEC_PER_SEC));
        dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
            [alert dismissWithClickedButtonIndex:0 animated:YES];
    });
}

但是，如果用户登录并在Facebook上完成了该帖子，则回调也被触发而没有结果。

However, if the user logs in and completes the post on Facebook, the callback also gets triggered with no results.

如何区分所以我只显示发布的警报，如果用户实际发布到Facebook？

How do I differentiate so I only show the Posted alert if the user has actually posted to Facebook?

推荐答案

根据文档， result 可能为零或为空。不能保证您实际获得可以由您的应用使用的东西，以确认已发布的分享/信息。

According to the documentation, result may be nil or empty. There is no guarantee that you will actually get something back that could be used by your app to confirm a share/post has been made.

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