Iphone mpmediaplayerController，用户按下完成后无法重启视频

Question

我的Iphone的媒体播放器控制器出了点问题。

我可以播放一次视频，没有任何问题。

当用户按下done时，我关闭mediaplayer，并将用户移回上一个屏幕。(我正在使用一个基于导航的应用程序)。

但是，当我尝试通过按播放按钮再次启动视频时，媒体播放器控制器不再正常工作。

我看到的只是一个黑屏。没有视频，没有声音。

在得到MPMoviePlayerPlaybackDidFinishNotification或MPMoviePlayerDidExitFullscreenNotification之后，我已经发布了之前的媒体播放器控制器。

任何建议都将不胜感激。

更多信息-以下是我的代码片段：

- (void) viewDidAppear:(BOOL)animated
{
moviePlayerController = [[MPMoviePlayerController alloc] initWithContentURL:url]; 
[self.view addSubview:moviePlayerController.view]; 

[[NSNotificationCenter defaultCenter] addObserver:self  
                                         selector:@selector(moviePlaybackComplete:)  
                                             name:MPMoviePlayerPlaybackDidFinishNotification  
                                           object:nil];  

[[NSNotificationCenter defaultCenter] addObserver:self  
                                         selector:@selector(moviePlaybackComplete:)  
                                             name:MPMoviePlayerDidExitFullscreenNotification  
                                           object:nil];  // This is to deal with the user pressing the done button.

[moviePlayerController setFullscreen:YES];
[moviePlayerController play];

}

- (void)moviePlaybackComplete:(NSNotification *)notification  
{  
NSLog(@"movie playback ended");
int reason = [[[notification userInfo] objectForKey:MPMoviePlayerPlaybackDidFinishReasonUserInfoKey] intValue];
if(reason == MPMovieFinishReasonPlaybackEnded)
    NSLog(@"Reason: MPMovieFinishReasonPlaybackEnded");
else if(reason == MPMovieFinishReasonPlaybackError)
    NSLog(@"Reason: MPMovieFinishReasonPlaybackError");
else if(reason == MPMovieFinishReasonUserExited)
    NSLog(@"Reason: MPMovieFinishReasonUserExited");
else
    NSLog(@"Reason: %d", reason);

[[NSNotificationCenter defaultCenter] removeObserver:self  
                                                name:MPMoviePlayerPlaybackDidFinishNotification  
                                              object:nil];  

[[NSNotificationCenter defaultCenter] removeObserver:self  
                                                name:MPMoviePlayerDidExitFullscreenNotification  
                                              object:nil];  

[moviePlayerController.view removeFromSuperview]; 
moviePlayerController.initialPlaybackTime = -1; 
[moviePlayerController pause];
[moviePlayerController stop];
[moviePlayerController release]; 
moviePlayerController = nil;

[[self navigationController] popViewControllerAnimated:YES];
}  

Answer 1

-(void)videoFile:(NSString *)moviepath
{

    //[tools setHidden:YES];
//  bi3.enabled=NO;

    // Register to receive a notification when the movie scaling mode has changed. 


    //NSString *moviePath = [bundle pathForResource:@"video" ofType:@"mp4"];
    NSURL  *movieURL1 = [[NSURL fileURLWithPath:moviepath] retain];
    MPMoviePlayerController *theMovie = [[MPMoviePlayerController alloc] initWithContentURL:movieURL1];
    [theMovie setControlStyle:MPMovieControlStyleFullscreen];
    [theMovie play];
    MPMoviePlayerViewController *moviePlayer11 = [[MPMoviePlayerViewController alloc] initWithContentURL:movieURL1];
    [self presentMoviePlayerViewControllerAnimated:moviePlayer11];  // Override point for customization after app launch    
    // [navigationController.view addSubview:];
    //[self.view addSubview:mpMCtr.view];



}
- (void) movieFinishedCallback:(NSNotification*) aNotification 
{
    bi3.enabled=YES;
    [tools setHidden:NO];
    MPMoviePlayerController *player = [aNotification object];
    [[NSNotificationCenter defaultCenter] 
     removeObserver:self
     name:MPMoviePlayerPlaybackDidFinishNotification
     object:player];
   // [player stop];
    //[self.view removeFromSuperview];
[player.view removeFromSuperview];

       [player autorelease];    
}

- (void) moviePlayBackDidFinish:(NSNotification*)aNotification
{

    MPMoviePlayerController* theMovie=[aNotification object]; 
    [[NSNotificationCenter defaultCenter] removeObserver:self 
                                                    name:MPMoviePlayerPlaybackDidFinishNotification
                                                  object:theMovie];
    //[mpMCtr stop];

    [theMovie.view removeFromSuperview];
    [videoTable removeFromSuperview];


    //[self.navigationController popViewControllerAnimated:YES];
}

-(void)videoClick:(id)sender
{
    bi3.enabled=NO;
    path2 = [[NSBundle mainBundle] pathForResource:@"Interview" ofType:@"mp4" inDirectory:nil];
    [self videoFile:path2];

}