Iphone 在iOS 3.2（iPad）中正确显示和禁用全屏MPMoviePlayerController

我在iPad应用程序中显示全屏电影时遇到很多问题，然后允许用户通过播放器控件上的“完成”按钮或“取消全屏”按钮将其关闭

最初，我使用的是

mpmovieplayervcontroller

进行电影演示，但我没有从它的

mpmovieplayervcontroller

对象接收进入/退出全屏通知，所以我改为自己做

我可以让电影全屏显示（虽然转换很简陋），但当按下“完成”或“取消全屏”按钮时，播放器不会采取任何行动。我已经在下面发布了我的代码：

- (void)startPlayingMovieWithURLString:(NSString *)movieURLString {
    // I get all of these callbacks **EXCEPT** the "willExitFullScreen:" callback.
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willEnterFullScreen:) name:MPMoviePlayerWillEnterFullscreenNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willExitFullScreen:) name:MPMoviePlayerWillExitFullscreenNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didFinishPlayback:) name:MPMoviePlayerPlaybackDidFinishNotification object:nil];

    [self.moviePlayerController setContentURL:someExistingURL];

        // "self" is a UIViewController subclass, and is presented as a "fullscreen" modal view controller from its parent
        // I'm setting the movie player's view's frame to take up the full rectangle of my view controller, but really I want the movie to be completely removed when the user presses "done" (that is, removed from the view hierarchy). Not sure when/where to do this.
    self.moviePlayerController.view.frame = self.view.frame;
    [self.view addSubview:self.moviePlayerController.view];
    [self.moviePlayerController setFullscreen:YES animated:YES];

}

这是我的didfish回调的代码

- (void)didFinishPlayback:(NSNotification *)notification {
        // This ends up recursively telling the player that playback ended, thus calling this method, thus…well you get the picture.
        // What I'm trying to do here is just make the player go away and show my old UI again.
    [self.moviePlayerController setFullscreen:NO animated:YES];
}

---

所以很明显我做错了什么，但是我一直在上下查阅文档，我不知道如何让这部电影就这么消失了。我觉得这比这更直观。我做错了什么？

以下是事件->通知的工作原理：

• 用户按下“完成”按钮

  • MPMoviePlayerWillExitFullscreenNotification

  • MPMoviePlayerDidExitFullscreenNotification

• 用户按下传输上的“离开全屏”按钮

  • MPMoviePlayerWillExitFullscreenNotification

  • MPMoviePlayerDidExitFullscreenNotification

  • 请注意，播放不会停止
• 电影即将结束

  • MPMoviePlayerPlaybackDidFinishNotification

    将

    MPMoviePlayerPlaybackDidFinishReasonUserInfoKey

    设置为

    mpmoviefinishreasonlaybackend

  • 如果在此通知中在MoviePlayerController实例上调用

    setFullscreen:NO animated:YES

    ，则会收到

    将退出

    和

    DidExit

    通知
  • 请注意，当用户按下“完成”或“离开”全屏按钮时，不会收到

    playbackdidfish

    通知

因此，通常情况下，如果要删除电影播放器的视图，需要将

[self.moviePlayerController.view removeFromSuperview]

放入

DidExitFullscreen

通知处理程序中<代码>将退出完整屏幕太早

这是我的密码：

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

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

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

- (void)exitedFullscreen:(NSNotification*)notification {
    NSLog(@"exitedFullscreen");
    [self.movieController.view removeFromSuperview];
    self.movieController = nil;
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

- (void)playbackFinished:(NSNotification*)notification {
    NSNumber* reason = [[notification userInfo] objectForKey:MPMoviePlayerPlaybackDidFinishReasonUserInfoKey];
    switch ([reason intValue]) {
        case MPMovieFinishReasonPlaybackEnded:
            NSLog(@"playbackFinished. Reason: Playback Ended");         
                break;
        case MPMovieFinishReasonPlaybackError:
            NSLog(@"playbackFinished. Reason: Playback Error");
                break;
        case MPMovieFinishReasonUserExited:
            NSLog(@"playbackFinished. Reason: User Exited");
                break;
        default:
            break;
    }
    [self.movieController setFullscreen:NO animated:YES];
}

- (void)showMovie {
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willEnterFullscreen:) name:MPMoviePlayerWillEnterFullscreenNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willExitFullscreen:) name:MPMoviePlayerWillExitFullscreenNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(enteredFullscreen:) name:MPMoviePlayerDidEnterFullscreenNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(exitedFullscreen:) name:MPMoviePlayerDidExitFullscreenNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playbackFinished:) name:MPMoviePlayerPlaybackDidFinishNotification object:nil];

    NSURL* movieURL =  [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"tron" ofType:@"mov"]];
    self.movieController = [[MPMoviePlayerController alloc] initWithContentURL:movieURL];
    self.movieController.view.frame = self.view.frame;
    [self.view addSubview:movieController.view];
    [self.movieController setFullscreen:YES animated:YES];
    [self.movieController play];
}

---

对。太好了。上面确实提到了一些通知

但是，没有MPMoviePlayerPlaybackWillFinishNotification somewhy！！！ 这真是个问题

当您将电影播放器作为模式调用时（无论以下哪种方法使用presentViewController/presentModalViewController/presentVideoController），如果您定义了.fullScreen=YES，则它根本不需要调用MPMoviePlayerWillExitFullscreenNotification通知（显然，因为它不是命令，所以我们进入/退出全屏，但只显示/关闭控制器）

但实际上没有任何关于视频即将完成和关闭的通知。这是需要（除了任何其他可能的情况）抓住解雇过渡开始的时刻。（当然，过渡在调用MPMoviePlayerPlaybackDidFinishNotification之前开始）。同时，在通知之前调用了application:SupportedInterfaceOrientionsforWindow:for先前显示的控制器，并且无法告诉AppDelegate当前控制器必须已经以另一个方向显示

---

因此，由于我的视频是全屏的，也没有显示任何控件（这是一种介绍，所以我只是在它完成之前）我的解决方案就是有一个计时器，它每短时间（0.1秒）检查一次视频的当前位置是什么…现在已经接近尾声了，现在是我自己通知的时候了。

这很有帮助，当用户按“完成”时，我现在可以全屏退出，但是-playbackpunched:回调永远不会为我执行，我一辈子也弄不明白为什么不执行。你知道什么原因吗为什么会发生这种情况？即使电影播放到最后？这很奇怪，我从来没有遇到过。如果MPMoviePlayerDexitFullScreenNotification在触摸“完成”时同时调用在退出全屏时，您如何知道调用了哪个？可能用户只退出全屏，在这种情况下，我猜您不想删除视图。请注意，更改MPMoviePlayer[Will/Did][Exit/Enter]全屏通知中的控制样式会使进一步的通知陷入混乱状态。连线：有史以来最好的答案，谢谢