MPMoviePlayerController给我一个黑色的空视图，没有video播放

iOS 5.1，这里是代码：

MPMoviePlayerController *player = [[MPMoviePlayerController alloc] initWithContentURL: [NSURL URLWithString:@"map.mp4"]]; [player prepareToPlay]; [player.view setFrame: self.view.bounds]; // player's frame must match parent's [self.view addSubview: player.view]; // ... [player play]; 

其实这跟苹果说的一样，但是当我点击button来使用这个function的时候，只有一个黑色的Rectangle呆在那里，没有video播放，没有声音发生，也没有暗恋，所以我想知道如何做这个工作

Answer 1

对不起，很晚回复。 解决scheme有点奇怪。 但是在面临同样的问题时，它帮助我继续前进。

MPMovieSourceTypeStreaming是你错过的东西。

 MPMoviePlayerController *player = [[MPMoviePlayerController alloc] initWithContentURL: [NSURL URLWithString:@"map.mp4"]]; [player prepareToPlay]; [player.view setFrame: self.view.bounds]; // player's frame must match parent's player.movieSourceType = MPMovieSourceTypeStreaming; [self.view addSubview: player.view]; // ... [player play]; 

Answer 2

你可能正在发送你的

 [player play] 

消息太快了。

使用以下通知观察

 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playMovie:) name:MPMoviePlayerLoadStateDidChangeNotification object:player]; 

要监听loadState以更改为可播放。 要检查更新，请执行以下操作：

 - (void)playMovie:(NSNotification *)notification { MPMoviePlayerController *player = notification.object; if (player.loadState & MPMovieLoadStatePlayable) { NSLog(@"Movie is Ready to Play"); [player play]; } } 

一旦准备就绪，电影应该开始播放。

Answer 3

尝试下面的代码从您的项目播放video资源：

  NSBundle *bundle = [NSBundle mainBundle]; NSString *moviePath = [bundle pathForResource:@"map" ofType:@"mp4"]; NSURL *movieURL = [[NSURL fileURLWithPath:moviePath] retain]; MPMoviePlayerController *player = [[MPMoviePlayerController alloc] initWithContentURL:movieURL]; [player prepareToPlay]; [player.view setFrame: self.view.bounds]; // player's frame must match parent's [self.view addSubview: player.view]; // ... [player play]; 

谢谢..！

Answer 4

基于@ Dinesh的回答，你的URL创build是不正确的。 的价值

 [NSURL URLWithString:@"map.mp4"] 

将是零，因为@“map.mp4”不是一个有效的URL。 要从应用程序包创build一个有效的url，请按照Dinesh的说法。 要创build一个远程URL，你可以做类似的事情

 [NSURL URLWithString:@"http://www.jplayer.org/video/m4v/Big_Buck_Bunny_Trailer.m4v"] 

URL应该包含所有的部分：协议，主机，path，文件。

干杯，费利佩

Answer 5

在主窗口中添加您的电影播放器​​控制器视图，如：

  MPMoviePlayerController *player = [[MPMoviePlayerController alloc] initWithContentURL: [NSURL URLWithString:@"map.mp4"]]; [player prepareToPlay]; [player.view setFrame: self.view.bounds]; AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate]; [appDelegate.window addSubview: player.view]; [player play]; 

希望所以它会工作！

Answer 6

你的播放器应该是你的视图控制器的属性，如下所示：

。H：

 @property(nonatomic,weak)MPMoviePlayerController *moviePlayer; 

.M：

  MPMoviePlayerController *player = [[MPMoviePlayerController alloc] initWithContentURL: [NSURL URLWithString:@"map.mp4"]]; [player prepareToPlay]; [player.view setFrame: self.view.bounds]; // player's frame must match parent's //set the player to your property self.moviePlayer=player; [self.view addSubview: self.moviePlayer.view]; // ... [self.moviePlayer play]; 

Answer 7

请使用MPMoviePlayerViewController由于MP4文件。 当你使用MOV然后工作完美！

 MPMoviePlayerViewController *moviePlayerViewController; -(void)PlayVideoController:(NSString*)videoUrl1 { NSURL *fileURL = [NSURL URLWithString:videoUrl1]; moviePlayerViewController = [[MPMoviePlayerViewController alloc] initWithContentURL:fileURL]; // Register for the playback finished notification. [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(myMovieFinishedCallback:) name:MPMoviePlayerPlaybackDidFinishNotification object:moviePlayerViewController.moviePlayer]; //Present [self presentMoviePlayerViewControllerAnimated:moviePlayerViewController]; // Play the movie! moviePlayerViewController.moviePlayer.movieSourceType = MPMovieSourceTypeFile; [moviePlayerViewController.moviePlayer play]; } -(void)myMovieFinishedCallback:(NSNotification*)aNotification { [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:moviePlayerViewController.moviePlayer]; [moviePlayerViewController release], moviePlayerViewController = nil; } 

Answer 8

您可能需要检查videourl的空白处。 以下代码适用于我。

 - (IBAction)btnPlayVideo:(id)sender { self.strVideoUrl = [self.strVideoUrl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; NSURL *fileURL = [NSURL URLWithString:[NSString stringWithFormat:@"%@", self.strVideoUrl]]; NSLog(@"Url to play = %@", self.strVideoUrl); self.moviePlayerController = [[MPMoviePlayerController alloc] initWithContentURL:fileURL]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlaybackComplete:) name:MPMoviePlayerPlaybackDidFinishNotification object:self.moviePlayerController]; [self.moviePlayerController.view setFrame:self.view.bounds]; [self.view addSubview:self.moviePlayerController.view]; self.moviePlayerController.shouldAutoplay = YES; self.moviePlayerController.fullscreen = YES; self.moviePlayerController.controlStyle=NO; [self.moviePlayerController prepareToPlay]; self.moviePlayerController.movieSourceType = MPMovieSourceTypeStreaming; [self.moviePlayerController play]; } - (void)moviePlaybackComplete:(NSNotification *)notification { self.moviePlayerController = [notification object]; [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:self.moviePlayerController]; [self.moviePlayerController.view removeFromSuperview]; self.closeVideAdProp.hidden = NO; btnCloseAd.hidden=FALSE; }