Application stops when I hit the "Done" button - ios

Question

So, when I hit the "Done" button, whenever I am in the Movie Player, my app goes back to the previous menu, while a loading sign is in the middle of the screen. Then my app stops completely, without any error messages.
Here's my code:
_streamPlayer = [[MPMoviePlayerController alloc] initWithContentURL:url];
if(self.streamPlayer != nil){
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(moviePlayBackDidFinish:)
name:MPMoviePlayerPlaybackDidFinishNotification
object:_streamPlayer];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(doneButtonClick:)
name:MPMoviePlayerDidExitFullscreenNotification
object:_streamPlayer];
EDIT: I implemented the 2 functions like this:
-(void) moviePlayBackDidFinish:(NSNotification*)notification {
NSNumber *reason = [[notification userInfo] objectForKey:MPMoviePlayerPlaybackDidFinishReasonUserInfoKey];
switch ([reason intValue]) {
case MPMovieFinishReasonPlaybackEnded:
NSLog(#"Playback ended");
break;
case MPMovieFinishReasonPlaybackError:
[self alertWithMessage:NSLocalizedString(#"The video can't open!", #"The video can't open!")];
break;
case MPMovieFinishReasonUserExited:
NSLog(#"User Exited");
break;
default:
break;
}
}
-(IBAction) doneButtonClicked:(id)sender
{
[self.streamPlayer.view removeFromSuperview];
self.streamPlayer = nil;
}
I'm not sure about the second one! Still the same problem!
Any ideas?

Answer 1

Your code to add a notification center observer references a method named doneButtonClick:. However, the method you implemented is named doneButtonClicked: (note the 'ed' at the end!). As such, you'll get a crash when the notification comes in because the method you specified doesn't exit. You need to either:
Change the addObserver call to reference the actual method: #selector(doneButtonClicked:) or
Rename your method to match the addObserver call: - (IBAction)doneButtonClick:(id)sender
Incidentally, I'd rename the method and #selector reference to doneButtonTapped - users tap on a touch device, they don't 'click'.

Answer 2

I solved it!
I commented the second method (doneButtonClick:) and it's implementation and then, when the video player should stop playing, i added this:
[_streamPlayer stop];
[_streamPlayer.view removeFromSuperview];
[self dismissLoadingView];
[SVProgressHUD dismiss];