Calling function after thread/function completion

I would like to remove a view from another after the completion of a thread/another function in the class. At the moment I am using the following code to remove it after a set t开发者_C百科ime period, but obviously, the function completion times varies

LoadingView *loadingView =
    [LoadingView loadingViewInView:self.view];

    [loadingView
     performSelector:@selector(removeView)
     withObject:nil
     afterDelay:10.0];

Is there a simple way of doing this? I've looked online and can't seem to find anything. Does this mean I have to write this functionality myself?

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You can remove a view from the other thread with:

[loadingView performSelectorOnMainThread:@selector(removeView) withObject:nil waitUntilDone:NO];

Of course you just need to maintain a reference to the loadingView somewhere that the thread can access.