iOS版 - 播放多個視頻

Question

我使用這個代碼與MediaPlayer的框架，以播放視頻：

-(void)GrommeVideoExcerpt1 
{ 
NSURL *url1 = [NSURL fileURLWithPath:[[NSBundle mainBundle] 
            pathForResource:@"GrommeVideoExcerpt1" ofType:@"mp4"]]; 
grommePlayer1 = [[MPMoviePlayerController alloc] 
        initWithContentURL:url1]; 

[[NSNotificationCenter defaultCenter] addObserver:self 
             selector:@selector(moviePlayBackDidFinish:) 
              name:MPMoviePlayerPlaybackDidFinishNotification 
              object:grommePlayer1]; 

grommePlayer1.controlStyle = MPMovieControlStyleDefault; 
grommePlayer1.shouldAutoplay = YES; 
[self.view addSubview:grommePlayer1.view]; 
[grommePlayer1 setFullscreen:YES animated:YES]; 
} 

但是，當我打一個視頻，然後導航到另一個視頻，努力發揮吧，應用程序崩潰。它給我這個錯誤：

http://pastebin.com/nUGLXEAi

Answer 1

這裏的問題是要添加在視頻播放完畢的通知，並且該通知觸發你沒有導致崩潰的方法（moviePlayBackDidFinish:）。

您可以實現此方法或刪除通知，取決於你想要的視頻播放完畢即刪除播放視頻的viewController後做什麼，等

//Register notification 
[[NSNotificationCenter defaultCenter] addObserver:self 
            selector:@selector(moviePlayBackDidFinish:) 
             name:MPMoviePlayerPlaybackDidFinishNotification 
             object:nil]; 
//Then the method ... 
-(void) moviePlaybackDidFinish:(NSNotification *)aNotification{ 
    [grommePlayer1.view removeFromSuperview]; 
    grommePlayer1 = nil; 
}