完成按钮事件 MPMoviePlayerController

Question

在我的 iPhone 上，我以全屏模式播放视频/音频文件。当视频/音频文件结束时，会触发以下方法：

- (void) movieFinishedCallback:(NSNotification*) aNotification {
    MPMoviePlayerController *player = [aNotification object];

    [player stop];

    [[NSNotificationCenter defaultCenter] 
        removeObserver:self
        name:MPMoviePlayerPlaybackDidFinishNotification
        object:player];

    [player autorelease];
    [moviePlayer.view removeFromSuperview];

    NSLog(@"stopped?");
}

效果很好！但问题是当我在视频/音频文件仍在播放时按下“完成”按钮。那么这个方法就不会被触发了……

有人知道如何在按下“完成”按钮时捕获事件吗？因为现在媒体播放器停留在视图中。它没有消失。

Answer 1

当我在 iPad 上聆听时，它对我有用 MPMoviePlayerWillExitFullscreenNotification.

[[NSNotificationCenter defaultCenter] addObserver:self 
                                         selector:@selector(doneButtonClick:) 
                                             name:MPMoviePlayerWillExitFullscreenNotification 
                                           object:nil];

和选择器方法：

-(void)doneButtonClick:(NSNotification*)aNotification{
    NSNumber *reason = [notification.userInfo objectForKey:MPMoviePlayerPlaybackDidFinishReasonUserInfoKey];

    if ([reason intValue] == MPMovieFinishReasonUserExited) {
        // Your done button action here
    }
}

Answer 2

检查通知用户信息字典中的枚举

NSNumber *reason = [notification.userInfo objectForKey:MPMoviePlayerPlaybackDidFinishReasonUserInfoKey];

if ([reason intValue] == MPMovieFinishReasonUserExited) {

   // done button clicked!

}

所选答案已整合我的回复。请参考以上内容。

Answer 3

在 iOS7 和 iOS8 中成功测试

检查并删除MPMoviePlayerPlaybackDidFinishNotification 的早期通知观察者（如果有）。

- (void)playVideo:(NSString*)filePath
{
     // Pass your file path
        NSURL *vedioURL =[NSURL fileURLWithPath:filePath];
        MPMoviePlayerViewController *playerVC = [[MPMoviePlayerViewController alloc] initWithContentURL:vedioURL];

    // Remove the movie player view controller from the "playback did finish" notification observers
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:MPMoviePlayerPlaybackDidFinishNotification
                                                  object:playerVC.moviePlayer];

    // Register this class as an observer instead
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(movieFinishedCallback:)
                                                 name:MPMoviePlayerPlaybackDidFinishNotification
                                               object:playerVC.moviePlayer];

    // Set the modal transition style of your choice
    playerVC.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;

    // Present the movie player view controller
    [self presentViewController:playerVC animated:YES completion:nil];

    // Start playback
    [playerVC.moviePlayer prepareToPlay];
    [playerVC.moviePlayer play];
}

关闭控制器

- (void)movieFinishedCallback:(NSNotification*)aNotification
{
    // Obtain the reason why the movie playback finished
    NSNumber *finishReason = [[aNotification userInfo] objectForKey:MPMoviePlayerPlaybackDidFinishReasonUserInfoKey];

    // Dismiss the view controller ONLY when the reason is not "playback ended"
    if ([finishReason intValue] != MPMovieFinishReasonPlaybackEnded)
    {
        MPMoviePlayerController *moviePlayer = [aNotification object];

        // Remove this class from the observers
        [[NSNotificationCenter defaultCenter] removeObserver:self
                                                        name:MPMoviePlayerPlaybackDidFinishNotification
                                                      object:moviePlayer];

        // Dismiss the view controller
        [self dismissViewControllerAnimated:YES completion:nil];
    }
}

大功告成！！！

Answer 4

@property (nonatomic, strong) MPMoviePlayerController *moviePlayer;

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

- (void)doneButtonClick:(NSNotification*)aNotification
{
    if (self.moviePlayer.playbackState == MPMoviePlaybackStatePaused)
    {
        NSLog(@"done button tapped");
    }
    else
    {
        NSLog(@"minimize tapped");
    }
}

Answer 5

Swift 版本，任何有兴趣的人：

NSNotificationCenter.defaultCenter().addObserver(self, selector: "moviePlayerDoneButtonClicked:", name: MPMoviePlayerPlaybackDidFinishNotification, object: nil)

通知处理程序：

func moviePlayerDoneButtonClicked(note: NSNotification) {

    let reason = note.userInfo?[MPMoviePlayerPlaybackDidFinishReasonUserInfoKey]
    if (MPMovieFinishReason(rawValue: reason as! Int) == MPMovieFinishReason.UserExited) {
        self.exitVideo()
    }
}

Answer 6

哇，这么多错误的方法。答案很简单：

    moviePlayerViewController = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL fileURLWithPath:filePath]];

    [self.navigationController presentMoviePlayerViewControllerAnimated:moviePlayerViewController];

如果您有时间，请查看此链接：https://developer.apple.com/library/prerelease/ios/documentation/MediaPlayer/Reference/UIViewController_MediaPlayer_Additions/index.html

编码愉快！ Z.

Answer 7

Apple 在这件事上的文档很差。它建议收听 MPMoviePlayerDidExitFullscreenNotification（或 WillExit...）而不是 MPMoviePlayerDidFinishNotification，因为当用户点击完成时它不会触发。这完全不是真的！我刚刚使用 iPad Simulator (iOS 7.1 + 8.0) 在 Xcode 6.0 上对其进行了测试，当点击 DONE 时仅触发 MPMoviePlayerDidFinishNotification。

我要向 user523234 致意，他在上面的其中一个 cmets 上做对了。

注册以下观察者

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(playbackStateChanged:)
                                        name:MPMoviePlayerPlaybackDidFinishNotification
                                           object:_mpc];