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在iOS 3.2(iPad)中正确显示和解除全屏mpmovieplayercontroller

ios mpmovieplayercontroller ipad cocoa-touch iphone

jbrennan · 技术社区 · 15 年前

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

最初我用的是 MPMoviePlayerViewController 对于电影演示文稿,但我没有从其接收到进入/退出全屏通知 MPMoviePlayerController 对象,所以我改为自己做。

我可以使电影全屏显示(虽然过渡是詹基),但当按下“完成”或“取消全屏”按钮时,播放机不会采取任何操作。我已将我的代码发布到下面:

- (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回调代码

- (void)didFinishPlayback:(NSNotification *)notification {
        // This ends up recursively telling the player that playback ended, thus calling this method, thusâ¦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,但是我一直在上下翻阅文档,我不知道如何让电影消失。我觉得这比这更直观。我做错什么了?

2 回复 | 直到 13 年前

Art Gillespie 15 年前

以下是事件的工作方式->通知:

用户按“完成”按钮
- MPMoviePlayerWillExitFullscreenNotification
- MPMoviePlayerDidExitFullscreenNotification
用户在传输时按“离开全屏”按钮
- mpmovieplayer将退出全屏通知
- mpmovieplayerdiexitfullscreennotification(mpmovieplayerdiexitfullscreennotification)
- 注意 播放不停止
电影结束了
- MPMoviePlayerPlaybackDidFinishNotification 与 MPMoviePlayerPlaybackDidFinishReasonUserInfoKey 设置为 MPMovieFinishReasonPlaybackEnded
- 如果你打电话 setFullscreen:NO animated:YES 在此通知中的movieplayercontroller实例上,您将获得 WillExit 和 DidExit 通知。
- 注意,你没有得到 PlaybackDidFinish 当用户按下“完成”或“离开全屏”按钮时发出通知。

所以,通常,如果你想摆脱电影播放器的视角,你需要 [self.moviePlayerController.view removeFromSuperview] 在 DidExitFullscreen 通知处理程序。 WillExitFullscreen 太早了。

以下是我的代码:

- (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];
}

Agat 13 年前

对。那太好了。上面确实提到了一些通知…

但是,没有mpmovieplayerplaybackwillfinishingnotification 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/PresentModalView Controller/PresentVideoController),如果您定义了它。全屏=是,则不希望调用 mpmovieplayer将退出全屏通知 通知完全 (很明显,因为这不是一个舒适的过程,所以我们从全屏进入/退出,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。这是必要的(除了任何其他可能的情况),以抓住这个时刻,当解雇的过渡开始。(当然,转换是在 mpmovieplayerplaybackdidFinishNotification(mpmovieplayerplaybackdidFinishNotification) 叫)同时,application:supportedInterfaceOrientationsForWindow:对于之前显示的控制器,在通知之前调用,并且无法说AppDelegate必须以其他方向显示当前控制器。

所以,因为我的视频是全屏的,也没有显示任何控件(这是一种介绍,所以我只是直到它完成) 我的解决方案是用一个计时器来检查每一个短勾(0.1秒)的视频当前位置 …就快结束了,这是我自己通知的时刻。