iPad上的mpmovieplayercontroller播放错误
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01-10-2019 - |
题
我正在编写一个应用程序,该应用程序将使用iPad上的MPMoviePlayerController播放视频。问题是,该应用程序正常工作,并且在我大约15小时前停止工作时播放视频,但是现在视频没有播放。 mpmovieplayercontroller将显示视频中的第一帧,在全屏幕视图中,我可以擦洗电影,但是当我击打时,它会立即停下来。 I have the code below, when debugging i noticed that when I call play it sends an MPMoviePlayerPlaybackStateDidChangeNotification with the playbackState being MPMoviePlaybackStatePlaying and then right away it sends another MPMoviePlayerPlaybackStateDidChangeNotification notification with playbackState being MPMoviePlaybackStatePaused.不确定这是否有帮助,但请告诉我,您是否在我的代码中看到任何错误或有想法,谢谢。
- (void)handleNotification:(NSNotification *)notification {
if ([[notification name] isEqualToString:MPMoviePlayerPlaybackStateDidChangeNotification]) {
if (_videoPlayer.playbackState == MPMoviePlaybackStatePlaying) {
_playButtonLarge.hidden = YES;
_scrubber.maximumValue = _videoPlayer.duration;
[_playPauseButton setBackgroundImage:[UIImage imageNamed:@"video_controls_pause.png"] forState:UIControlStateNormal];
if (_updateScrubberTimer == nil) {
_updateScrubberTimer = [NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(updateScrubber) userInfo:nil repeats:YES];
}
} else if (_videoPlayer.playbackState == MPMoviePlaybackStatePaused || _videoPlayer.playbackState == MPMoviePlaybackStateStopped) {
[_playPauseButton setBackgroundImage:[UIImage imageNamed:@"video_controls_play.png"] forState:UIControlStateNormal];
_playButtonLarge.hidden = NO;
if (_updateScrubberTimer != nil) {
[_updateScrubberTimer invalidate];
_updateScrubberTimer = nil;
}
if (_videoPlayer.playbackState == MPMoviePlaybackStateStopped) {
_scrubber.value = 0.0f;
_timePlayedLabel.text = @"0:00";
_timeRemainingLabel.text = @"-0:00";
_videoPlayerBG.hidden = NO;
}
}
} else if ([[notification name] isEqualToString:MPMoviePlayerPlaybackDidFinishNotification]) {
NSNumber *reason = [[notification userInfo] objectForKey:MPMoviePlayerPlaybackDidFinishReasonUserInfoKey];
if ([reason intValue] == MPMovieFinishReasonPlaybackEnded) {
_videoPlayerBG.hidden = NO;
}
_scrubber.value = _scrubber.maximumValue;
}
}
- (void)playPause {
if ([_videos count] > 0) {
if (_videoPlayer.playbackState == MPMoviePlaybackStatePaused || _videoPlayer.playbackState == MPMoviePlaybackStateStopped) {
_playButtonLarge.hidden = YES;
_videoPlayerBG.hidden = YES;
if ([_videoPlayer contentURL] == nil) {
Video *video = [_videos objectAtIndex:0];
[_videoPlayer setContentURL:video.videoURL];
}
if (![_videoPlayer isPreparedToPlay]) {
[_videoPlayer prepareToPlay];
}
[_videoPlayer play];
} else if (_videoPlayer.playbackState == MPMoviePlaybackStatePlaying) {
_playButtonLarge.hidden = NO;
[_videoPlayer pause];
}
}
}
解决方案
我想我已经弄清楚了,我在每次播放之前都将以下代码放在
if (![_videoPlayer isPreparedToPlay]) {
[_videoPlayer prepareToPlay];
}
现在有效,如果其他人有任何意见,请告诉我
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