IOS/Objective-C：在SLComposer消息后关闭视图控制器

我正在尝试在SLComposer发送消息后关闭视图控制器

为此，我在SLComposer方法中使用完成块，如下所示：

  [myPostSheet setCompletionHandler:^(SLComposeViewControllerResult result) {

            switch (result) {


        case SLComposeViewControllerResultCancelled:
                NSLog(@"Post Canceled");
            [self alertPostFail];
                break;
            case SLComposeViewControllerResultDone:
                NSLog(@"Post Successful");
                success = 1;
                [self dismissUnderlyingVC ];

                break;

            default:
                break;
        }
    }];

-(void)dismissUnderlyingVC {
    LogDebug(@"trying to dismiss Underlying VC");
   [self dismissViewControllerAnimated:YES completion:nil];
}

然而，尽管我将解雇放在了完成块中，它还是在SLComposer实际被解雇之前被解雇，没有解雇下一个VC，并且给出了以下错误：

     -[myVC dismissUnderlyingVC][Line 227] [DEBUG]
 trying to dismiss Underlying VC
    2018-08-28 20:23:59.579416-0400 idaru[1772:662392]
 [core] SLComposeViewController skipping explicit 
dismiss because isBeingDismissed is already 1
    2018-08-28 20:23:59.588142-0400 
idaru[1772:662392] [core] SLComposeViewController dealloc 

我推测SLComposer没有代表，因此我想知道如何确定它实际上已被解雇，以便我可以解雇它下面的下一个VC

---

提前感谢您的建议。

您的视图控制器当前正在演示SLComposeViewController

因此，当您调用dismissViewControllerAnimated:completion:on self时，实际上是在请求解除已在解除过程中的SLComposeViewController

请尝试让presentingViewController关闭：

[self.presentingViewController dismissViewControllerAnimated:YES completion:nil];

可能重复的