在电影播放器​​上按下"完成"时,MPMoviePlayerPlaybackDidFinishNotification无法正常工作

Question

我一直试图解决这个问题,并试图遵循任何建议,但在用户按下电影播放器​​上的"完成"后,我似乎无法让'MPMoviePlayerPlaybackDidFinishNotification'工作.

- (void)myMovieFinishedCallback:(NSNotification*)aNotification {
     MPMoviePlayerController* theMovie=[aNotification object];
     [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:theMovie];
     [theMovie pause];
     [theMovie stop]; 
     [theMovie autorelease]; 
     [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationPortrait animated:YES];
 }

- (void)myMovieViewFinishedCallback:(NSNotification*)aNotification {
     MPMoviePlayerViewController* theMovieView=[aNotification object];
     [self dismissMoviePlayerViewControllerAnimated];
     [[NSNotificationCenter defaultCenter]removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:theMovieView];
     [theMovieView pause];
     [theMovieView stop];
     [theMovieView autorelease];
     [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationPortrait animated:YES];
 }

- (IBAction)safetyVideo:(id)sender {
     NSString *path = [[NSBundle mainBundle] pathForResource:@"Ball_Crunch" ofType:@"m4v"];

     if ([[[UIDevice currentDevice] systemVersion] doubleValue] >= 3.2) {
         MPMoviePlayerViewController*tmpMoviePlayViewController=[[[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL fileURLWithPath:path]] retain];
         if (tmpMoviePlayViewController) {
             [self presentMoviePlayerViewControllerAnimated:tmpMoviePlayViewController]; 
             tmpMoviePlayViewController.moviePlayer.movieSourceType = MPMovieSourceTypeFile;
             [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(myMovieViewFinishedCallback:) name:MPMoviePlayerPlaybackDidFinishNotification object:tmpMoviePlayViewController];

             [tmpMoviePlayViewController.moviePlayer play];
         }

     }else{
         MPMoviePlayerController* theMovie = [[[MPMoviePlayerController alloc] initWithContentURL:[NSURL fileURLWithPath:path]] retain];
         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(myMovieFinishedCallback:) name:MPMoviePlayerPlaybackDidFinishNotification object:theMovie];

         [theMovie play];
     }
}

按下"完成"时电影播放正常并消失,但从不调用回调.有什么建议？

谢谢.

Answer 1

同样的问题在这里 想通了,当我nil作为对象(而不是MoviePlayerController)发送时,触发了回调...