2

这是我在 SO 的第一篇文章。我要感谢所有 SO 用户，他们的贡献在我所有的项目中帮助了我很多。我是 iPhone 应用程序开发领域的新手。

该项目的目标是在电影播放器​​对象（设备上的 *.mov 文件）之上有一个自定义的交互式用户界面 (UI)。底层的 FullScreen MoviePlayers 可以不止一个，需要根据用户交互切换到不同的。

我正在使用 cocos2D 来实现自定义交互 UI 和效果（例如滑动手势上的粒子效果）。我正在使用 Multiple MPMoviePlayerViewController* 在全屏模式下播放常驻电影文件 (*.mov)（参考 MoviePlayer 示例）。

要求是通过在检测到触摸时在默认和备用电影播放器​​之间切换来在电影之间切换。此外，切换应尽可能平滑。

为了实现平滑切换，我使用了两个moviePlayerViewControllers，每个都是UIViewAppController 中对象的子视图。

问题a：我不确定这是否是实现电影切换的正确方法。

问题 b：在我目前的解决方案中。DefaultMoviePlayer在纵向模式下旋转，有时moviePlayer 对象不可见。行为不一致。

问题 c：备用电影播放器​​（MPMoviePlayerViewController作为 UIWindow 的子视图并首先添加的对象）在设备旋转时旋转，并且默认电影播放器​​（在MPMoviePlayerViewController之后添加的对象）不会正常运行。想不出它的逻辑解释。我读到的某个地方MPMoviePlayerViewController创建了它自己的窗口，这可能是一个问题。

    // From AppController.h
    UIWindow *window; // Parent application window
    UIView *viewCocos2D;    // Cocos View
    UIView *viewMovie;      // Default MoviePlayer View
    UIView *viewMovieAlternate;  // Alternate MoviePlayer View

// From AppController.m
// From DidAppFinishLoading
{
... 
 // Init the window
 window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; 

        // Init the views (Cocos2d, MOviePlayer and AlternateMOviePlayer)
 viewCocos2D = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
 viewMovie = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
 viewMovieAlternate = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; 

 // cocos2d will inherit these values
 [viewCocos2D setUserInteractionEnabled:YES]; 
 [viewCocos2D setMultipleTouchEnabled:YES];


 // create OpenGL view and attach it to a window
 //[[[UIApplication sharedApplication] keyWindow] addSubview:window];
 [[CCDirector sharedDirector] attachInView:viewCocos2D];

 // Default texture format for PNG/BMP/TIFF/JPEG/GIF images
 [CCTexture2D setDefaultAlphaPixelFormat:kCCTexture2DPixelFormat_RGBA8888]; 


 // Create a 
 customMoviePlayerWithUI = [[CustomMoviePlayerWithUI alloc] initWithSuperView:window andMovieView:viewMovie andAlternateView:viewMovieAlternate andSelf:self];
 CCScene *scene = [CCScene node];
 CocosCustomLayer *cocosLayer = [customMoviePlayerWithUI cocosLayer]; 


 [window addSubview:viewMovieAlternate];
 [window addSubview:viewMovie];
 // somehow this order lets cocos2D receive the touch events
 [window addSubview:viewCocos2D]; 


 [scene addChild: cocosLayer];
 [window makeKeyAndVisible];

 [[CCDirector sharedDirector] runWithScene: scene];
 [UIAccelerometer sharedAccelerometer].delegate = self;


 [customMoviePlayerWithUI start];
 [self didRotate:nil];

 ...
}

所以视图层次结构是

备用电影播放器​​视图在底部 默认电影播放器​​视图在下一个 Cocos2D 层视图在顶部——Cocos2D 视图也接收所有事件。

    // From CustomMoviePlayerWithUI.h
 MPMoviePlayerViewController *moviePlayerView;
 MPMoviePlayerViewController *moviePlayerViewAlternate; 

// These delegates are used frequently to invoke some functions
 AppController* delegateApplication;
 UIView  *delegateSuperWindow;  // Window which contains everything - 
 UIView *delegateView;         // View containing default MoviePlayer
 UIView *delegateViewAlternate;// View containing alternate MoviePlayer

以下是moviePlayerViewController 初始化代码——基本上它分配并初始化两个moviePlayerViewController 对象，并将它们作为子视图添加到来自AppController 的Default 和Alternate UIView 对象

// From customMoviePlayer.m
// initAndPlayMovie is called from the init of CustomMoviePlayer
- (void)initAndPlayMovie:(UIView *)view andAlternateView:(UIView*) viewMovieAlternate
{
 // Initialize a movie player object with the specified URL
 moviePlayerView = [[MPMoviePlayerViewController alloc] init];
 moviePlayerViewAlternate = [[MPMoviePlayerViewController alloc] init];


 [moviePlayerView shouldAutorotateToInterfaceOrientation:UIInterfaceOrientationLandscapeLeft];
 [moviePlayerViewAlternate shouldAutorotateToInterfaceOrientation:UIInterfaceOrientationLandscapeLeft];

 //if (moviePlayer)
 if (moviePlayerView && moviePlayerViewAlternate)
 {
  [[[moviePlayerView moviePlayer] backgroundView] setBackgroundColor:[UIColor blueColor]];
  [[[moviePlayerViewAlternate moviePlayer] backgroundView] setBackgroundColor:[UIColor redColor]];





  //[moviePlayerView setWantsFullScreenLayout:YES];

  // private API call.. don't use it..
  //[mp setOrientation:UIDeviceOrientationPortrait animated:NO];


  [view addSubview:[moviePlayerView view]];
  [viewMovieAlternate addSubview:[moviePlayerViewAlternate view]];
  //[view bringSubviewToFront:[moviePlayerView view]];

  //[[moviePlayerView moviePlayer] play]; 
 }
}

感谢您所有的帮助。如果您需要更多详细信息，请告诉我。

4

0 回答 0