MPMoviePlayer不工作

Question

我正在使用iphone中的视频应用程序。当用户点击一个按钮时，它将引导到第二个视图，从那里我正在播放来自url的视频。

但当用户从该视图返回并再次进入该视频未播放时。

它连续显示以下2行

     [MPAVController] Autoplay: Likely to keep up or full buffer: 0
     [MPAVController] Autoplay: Skipping autoplay, not enough buffered to keep up.

以下是我的代码

  - (void)viewDidLoad
  {
[super viewDidLoad];


 self.moviePlayerController = [[MPMoviePlayerController alloc] init];
[self.moviePlayerController prepareToPlay];
self.moviePlayerController.shouldAutoplay = YES;
[[self.moviePlayerController view] setFrame:CGRectMake(-30, 72, 360,140)];


[[self view] addSubview: [self.moviePlayerController view]];


  NSString *strng = [NSString stringWithFormat:@"http://quickemee_videos.s3.amazonaws.com/videoStream_1352395870143_616.mp4"];

NSLog(@"strng %@",strng);
NSURL * adurl = [NSURL URLWithString:strng];

 [self playVideo:adurl];

 }

。。。。

 -(IBAction)back:(id)sender{


 [moviePlayerController stop];
[self.navigationController popViewControllerAnimated:YES];

   }  

Answer 1

使用此代码

    NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"video_name" ofType:@"m4v"]];

    moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:url];

    [moviePlayer prepareToPlay];
    moviePlayer.view.frame = self.view.bounds;
    [self.view addSubview:moviePlayer.view];
    [moviePlayer play];
    [moviePlayer setFullscreen:FALSE];
// if you want no control.
    [moviePlayer setControlStyle:MPMovieControlStyleNone];        

Answer 2

请先尝试调用[self prepareToPlay]。

苹果称：

如果在调用play方法时电影播放器尚未准备好播放，则该方法会自动调用此方法。但是，为了减少播放延迟，请在调用play之前调用此方法。

更新：

确保该文件可用。我无法在我的浏览器中访问它。

Answer 3

viewDidLoad只调用一次。因此，当您弹出viewController并返回到它时，不会再次调用viewDidLoad。因此可以尝试在- (void)viewWillAppear:(BOOL)animated中实现self.moviePlayerController = [[MPMoviePlayerController alloc] init];