如何在播放 MPMoviePlayerController 电影之前隐藏控件？

Question

假设 iOS 3.2 或更高版本。在最初隐藏控件的情况下执行动作的正确命令顺序是什么？电影播放时，用户可以选择在屏幕上标记并显示控件。

谢谢！

我的（控件未隐藏）代码：

- (void)playMovie
{
    NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"Test" ofType:@"m4v"]];  
    MPMoviePlayerController *moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:url];  

    // Register to receive a notification when the movie has finished playing.  
    [[NSNotificationCenter defaultCenter] addObserver:self  
                                             selector:@selector(movieDone:)  
                                                 name:MPMoviePlayerPlaybackDidFinishNotification  
                                               object:moviePlayer];  

    [[NSNotificationCenter defaultCenter] addObserver:self  
                                             selector:@selector(movieState:)  
                                                 name:MPMoviePlayerNowPlayingMovieDidChangeNotification  
                                               object:moviePlayer];  

    [[NSNotificationCenter defaultCenter] addObserver:self 
                                             selector:@selector(movieReady:) 
                                                 name:MPMoviePlayerLoadStateDidChangeNotification 
                                               object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willEnterFullScreen:) name:MPMoviePlayerWillEnterFullscreenNotification object:moviePlayer];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willExitFullScreen:) name:MPMoviePlayerWillExitFullscreenNotification object:moviePlayer];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didFinishPlayback:) name:MPMoviePlayerPlaybackDidFinishNotification object:moviePlayer];


    if ([moviePlayer respondsToSelector:@selector(setFullscreen:animated:)]) {  
        moviePlayer.controlStyle = MPMovieControlStyleDefault; // MPMovieControlStyleNone MPMovieControlStyleEmbedded MPMovieControlStyleFullscreen MPMovieControlStyleDefault
        moviePlayer.scalingMode = MPMovieScalingModeAspectFill; // MPMovieScalingModeAspectFit MPMovieScalingModeAspectFill
    }   
}

- (void) movieReady:(NSNotification*)notification 
{
    MPMoviePlayerController *moviePlayer = [notification object];  

    if ([moviePlayer loadState] != MPMovieLoadStateUnknown) {
        // Remove observer
        [[NSNotificationCenter defaultCenter] removeObserver:self  
                                                        name:MPMoviePlayerLoadStateDidChangeNotification  
                                                      object:nil];

        // When tapping movie, status bar will appear, it shows up
        // in portrait mode by default. Set orientation to landscape
        [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeLeft animated:NO];
        [[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationNone];

        // Add movie player as subview
        [[self view] addSubview:[moviePlayer view]];   

        // Play the movie
        [moviePlayer play];
        [moviePlayer setFullscreen:YES animated:YES];       
    }
}

Answer 1

[更新] 正如 @ReinYem 所提议的，更好的解决方案是依赖 MPMoviePlayerLoadStateDidChangeNotification 而不是计时器。

实际上，不应再考虑以下解决方案：

最初将 controlStyle 属性设置为 MPMovieControlStyleNone，然后在一秒钟后使用 a 将其设置为 MPMovieControlStyleFullscreen [performSelector:withObject:afterDelay:1]。
它运行良好，直到用户点击视频后控件才会出现。

Answer 2

使用回调代替计时器：

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(hidecontrol) 
                                                 name:MPMoviePlayerLoadStateDidChangeNotification 
                                               object:playerView.moviePlayer];

使用回调函数：

- (void) hidecontrol {
[[NSNotificationCenter defaultCenter] removeObserver:self     name:MPMoviePlayerNowPlayingMovieDidChangeNotification object:playerView.moviePlayer];
[playerView.moviePlayer setControlStyle:MPMovieControlStyleFullscreen];

}

Answer 3

player.moviePlayer.controlStyle = MPMovieControlStyleNone;

是最新的方法。 :)