MPMoviePlayerController在iPad中的全屏怪癖

Question

我想在视图控制器中显示MPMoviePlayerController，并让用户使用默认控件（如YouTube应用）切换全屏。我使用的裸机例如下面的代码：

- (void)viewDidLoad { 
    [super viewDidLoad]; 
    self.player = [[MPMoviePlayerController alloc] init]; 
    self.player.contentURL = theURL; 
    self.player.view.frame = self.viewForMovie.bounds; 
    self.player.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; 
    [self.viewForMovie addSubview:player.view]; 
    [self.player play]; 
} 

这种运作良好，直到用户进行视频全屏播放，旋转设备，并点击屏幕上。状态栏显示在错误的位置，如下面的屏幕截图所示。

我与模板iPad的标签栏应用程序的工作。我只在XIB中添加了viewDidLoad，视图变量和一个UIView来显示电影播放器​​。

我在做什么错？

Answer 1

IsAutorotateToInterfaceOrientation：interfaceOrientation对所有支持的方向返回YES？

 
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { 
    return YES; 
} 

如果你提供了更多的代码，它会有所帮助。

Answer 2

您是否正在为您的UI使用界面构建器？如果确实如此，请确保在视图属性检查器中将视图的方向设置为“横向”。

Answer 3

有同样的问题，只是花了半天整理出来。使用纵向的iPad，每当我使用示例代码（或任何可以在网上找到的视频）开始视频时，视频和控制栏都被格式化为纵向，并因此在屏幕上全部显示。

无论如何，以下对我有用。

/* Call the code like below: 
     int iLandscape; 
     if(newOrientation==UIInterfaceOrientationLandscapeLeft || newOrientation==UIInterfaceOrientationLandscapeRight) 
      iLandscape=1; 

     [self PlayVideo:iLandscape fullscreen:1] 
    */ 
     ////////////////////////////////////////////////////////////////////////// 
     - (void)PlayVideo:(int)iLandscape fullscreen:(int)iFullScreen 
     { 
      NSString *url = [[NSBundle mainBundle] pathForResource:@"myvideofile" ofType:@"m4v"]; 

     if(iFullScreen==0) 
     { 
      MPMoviePlayerController *player2 = 
       [[MPMoviePlayerController alloc] 
        initWithContentURL:[NSURL fileURLWithPath:url]]; 

      [[NSNotificationCenter defaultCenter] 
       addObserver:self 
        selector:@selector(movieFinishedCallback:) 
         name:MPMoviePlayerPlaybackDidFinishNotification 
        object:player2]; 

      //---play partial screen--- 
      player2.view.frame = CGRectMake(0, 0, m_iScreenWidth, m_iScreenHeight); 
      [self addSubview:player2.view]; 
      //---play movie--- 
      [player2 play]; 
     } 
     else 
     { 
      MPMoviePlayerViewController *playerViewController = [[MPMoviePlayerViewController alloc] 
       initWithContentURL:[NSURL fileURLWithPath:url]]; 

      [[NSNotificationCenter defaultCenter] 
       addObserver:self 
        selector:@selector(movieFinishedCallback:) 
         name:MPMoviePlayerPlaybackDidFinishNotification 
        object:[playerViewController moviePlayer]]; 

      if(iLandscape) 
      { 
       playerViewController.view.frame = CGRectMake(0, 0, m_iScreenWidth, m_iScreenHeight); 
      } 
      [self addSubview:playerViewController.view]; 
      //play movie 
      MPMoviePlayerController *player = [playerViewController moviePlayer]; 
      player.scalingMode=MPMovieScalingModeAspectFit; 
      [player play]; 
     } 
    } 


    ////////////////////////////////////////////////////////////////////////// 
    - (void) movieFinishedCallback:(NSNotification*) aNotification 
    { 
     MPMoviePlayerController *player = [aNotification object]; 
     [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:player];  
     [player autorelease];  
     [player.view removeFromSuperview]; 
    } 

Answer 4

您是否解决了这个问题？

[[UIApplication sharedApplication] setStatusBarOrientation:UIDeviceOrientationPortrait animated:NO]; 

此代码可能会对您有所帮助。

Answer 5

是的，我也遇到过这个问题。它绝对是MPMoviePlayerController本身的一个bug。

我在我的应用程序入驻上的解决方法是只需要修正状态栏自己，当我退出全屏模式：

- (void)playerDidExitFullscreen:(NSNotification *)notification { 
    MPMoviePlayerController *moviePlayer = (MPMoviePlayerController *) notification.object; 

    if (moviePlayer == self.player) { 
     UIApplication *app = [UIApplication sharedApplication]; 
     if (app.statusBarOrientation != self.interfaceOrientation) { 
      [app setStatusBarOrientation:self.interfaceOrientation animated:NO]; 
     } 
    } 
} 

这不解决问题，而在全屏模式，但它确实之后修复它。当然

注意，功能需要被添加到通知：

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playerDidExitFullscreen:) name:MPMoviePlayerDidExitFullscreenNotification object:nil]; 

Answer 6

发现了它。

有同样的问题 - 这里是我做的。我会建议将代码逐个添加到您的项目中，以查看它的工作原理。

首先 - 我放东西的是肖像模式。

[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationPortrait animated:NO]; 

然后我把电影推到状态栏上。注意 - 这是假设视频有一个4×3宽高比

theVideo = [[MPMoviePlayerController alloc] initWithContentURL: [NSURL fileURLWithPath : path]]; 
float aspectRatio = (3.0f/4.0f); 
float theMovieHeight = [self view].bounds.size.width * aspectRatio; 
[[theVideo view] setFrame:(CGRectMake(0, [self view].bounds.size.height - theMovieHeight, [self view].bounds.size.width, theMovieHeight))]; 

然后，在应用程序启动时的地方（在我的项目，它是在didFinishLaunchingWithOptions功能） - 反正，你只需要访问窗口对象。

float aspectRatio = (3.0f/4.0f); 
float theMovieHeight = self.window.bounds.size.width * aspectRatio; 
float theSpaceAboveTheMovie = self.window.bounds.size.height - theMovieHeight; 
float whereTheMovieShouldBeCentered = (self.window.bounds.size.height - theMovieHeight)/2; 

CGAffineTransform theTransform = CGAffineTransformMakeTranslation(0,0); 

theTransform = CGAffineTransformScale(theTransform, 1.0f/aspectRatio, 1.0f/aspectRatio); 
theTransform = CGAffineTransformTranslate(theTransform, -whereTheMovieShouldBeCentered, 0); 
theTransform = CGAffineTransformRotate(theTransform, M_PI/2); 
theTransform = CGAffineTransformTranslate(theTransform, 0, -theSpaceAboveTheMovie); 

[self.window setTransform:theTransform]; 

请记住，仿射变换是以相反的顺序完成的。所以，如果你想看看每个变换做（我建议你应该），注释掉前三

在这里，你会看到在页面上居中

// theTransform = CGAffineTransformScale(theTransform, 1.0f/aspectRatio, 1.0f/aspectRatio); 
// theTransform = CGAffineTransformTranslate(theTransform, -whereTheMovieShouldBeCentered, 0); 
// theTransform = CGAffineTransformRotate(theTransform, M_PI/2); 
    theTransform = CGAffineTransformTranslate(theTransform, 0, -theSpaceAboveTheMovie); 

然后电影和状态栏第一2

这里你应该看的电影和状态栏旋转，不再集中

// theTransform = CGAffineTransformScale(theTransform, 1.0f/aspectRatio, 1.0f/aspectRatio); 
// theTransform = CGAffineTransformTranslate(theTransform, -whereTheMovieShouldBeCentered, 0); 
    theTransform = CGAffineTransformRotate(theTransform, M_PI/2); 
    theTransform = CGAffineTransformTranslate(theTransform, 0, -theSpaceAboveTheMovie); 

在这里，你应该看到它旋转和居中

// theTransform = CGAffineTransformScale(theTransform, 1.0f/aspectRatio, 1.0f/aspectRatio); 
    theTransform = CGAffineTransformTranslate(theTransform, -whereTheMovieShouldBeCentered, 0); 
    theTransform = CGAffineTransformRotate(theTransform, M_PI/2); 
    theTransform = CGAffineTransformTranslate(theTransform, 0, -theSpaceAboveTheMovie); 

并与他们一起，它旋转和全屏

您可以下载我的示例代码here。

Answer 7

试试这个

- (void)willEnterFullscreen:(NSNotification*)notification { 
    NSLog(@"willEnterFullscreen"); 

    [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeRight animated:NO]; 
    } 

- (void)enteredFullscreen:(NSNotification*)notification { 
    NSLog(@"enteredFullscreen"); 
} 

- (void)willExitFullscreen:(NSNotification*)notification { 
    NSLog(@"willExitFullscreen"); 

    [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationPortrait animated:NO]; 


} 

- (void)exitedFullscreen:(NSNotification*)notification { 
    NSLog(@"exitedFullscreen"); 

    [[NSNotificationCenter defaultCenter] removeObserver:self]; 
}