Question

我有一个关于MPMoviePlayerController的小问题，当我点击那个电影按钮时，我有一个播放电影的链接，但是当我点击另一个按钮时应用程序崩溃，我需要找到如何识别该电影正在播放或得到任何回应

Answer 1

要扩展@ Saurabh的答案，您可以检查视频是否正在播放

if(player.playbackState == MPMoviePlaybackStatePlaying)
{
// is Playing
}

其中MPMoviePlaybackState定义为

enum {
   MPMoviePlaybackStateStopped,
   MPMoviePlaybackStatePlaying,
   MPMoviePlaybackStatePaused,
   MPMoviePlaybackStateInterrupted,
   MPMoviePlaybackStateSeekingForward,
   MPMoviePlaybackStateSeekingBackward
};
typedef NSInteger MPMoviePlaybackState;

Answer 2

有两个部分，通常组合使用;

注册MPMoviePlayerPlaybackStateDidChangeNotification，例如像这样：

[[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(MPMoviePlayerPlaybackStateDidChange:) 
                                                 name:MPMoviePlayerPlaybackStateDidChangeNotification 
                                               object:nil];

在通知处理程序中，您可以详细检查实际状态 - 例如像这样：

- (void)MPMoviePlayerPlaybackStateDidChange:(NSNotification *)notification
{
  //are we currently playing?
  if (movieController_.playbackState == MPMoviePlaybackStatePlaying)
  { //yes->do something as we are playing...
  }
  else 
  { //nope->do something else since we are not playing
  }
}

您当然也可以使用playbackState属性而不处理发出更改信号的通知。不过，在大多数情况下，这是正确的地方。

删除/删除电影播放时，请不要忘记删除通知处理程序，例如像这样：

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

Answer 3

您可以查看MPMoviePlayerController的playbackState属性。请参阅此链接 -

http://developer.apple.com/library/ios/#documentation/mediaplayer/reference/MPMoviePlayerController_Class/Reference/Reference.html

Answer 4

快速实现@ ZKV7的答案是：

if(player.playbackState == MPMoviePlaybackState.Playing)
{
  // is Playing
}

MPMoviePlaybackState枚举为：

enum MPMoviePlaybackState : Int {
   case Stopped
   case Playing
   case Paused
   case Interrupted
   case SeekingForward
   case SeekingBackward
}

有关MPMoviePlayerController的更多信息，请参阅apple docs。

Answer 5

检查视频播放器是否处于SWIFT播放状态

void

Answer 6

typedef NS_ENUM(NSInteger, AVPlayerTimeControlStatus) {
    AVPlayerTimeControlStatusPaused,
    AVPlayerTimeControlStatusWaitingToPlayAtSpecifiedRate,
    AVPlayerTimeControlStatusPlaying
} NS_ENUM_AVAILABLE(10_12, 10_0);


if(self.player.timeControlStatus == AVPlayerTimeControlStatusPlaying)
{
  // is Playing
}

了解MPMoviePlayerController当前是否正在播放

6 个答案: