Question

iOS 5.1，这是代码：

 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];

实际上，这和苹果参考说的一样，但是当我点击按钮使用这个功能时，只有一个黑色矩形停留在那里，没有视频播放，没有声音发生，也没有暗恋，所以我想知道如何做这项工作

Answer 1

很抱歉很晚才回复。解决方案有点奇怪。但这有助于我在面对同样的问题时继续前进。

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

您可能正在发送

[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];

侦听loadState以更改为可播放。要检查该更新，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];
    }
}

电影一旦准备就应该开始播放。

Answer 3

尝试使用以下代码来播放项目资源中的视频资源：

  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

根据@ Dinesh的回答，您的网址创建不正确。

的价值

[NSURL URLWithString:@"map.mp4"]

将为零，因为@“map.mp4”不是有效的URL。要从应用程序包中创建有效的URL，请执行Dinesh所说的内容。要创建远程URL，您可以执行类似

的操作

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

URL应包含其所有部分：协议，主机，路径，文件。

欢呼，费利佩

Answer 5

在主窗口上添加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];

希望它会起作用！

Answer 6

您的播放器应该是视图控制器的属性，如下所示：

·H：

@property(nonatomic,weak)MPMoviePlayerController *moviePlayer;

的.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因为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

您可能想要检查视频网址是否有空格。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;
}

MPMoviePlayerController给我一个黑色的空视图，没有视频播放

8 个答案: