我在iOS上遇到MPMoviePlayerController的问题,有时会播放视频(从本地文件加载),有时只是默默地失败。每次都以相同的方式在应用开始时启动相同的视频。当它失败时,它不会以任何方式通知,我只是看到黑屏。
这是我用来播放视频的代码(这是一个基于cocos2d-x的游戏,我将电影播放器控制器作为EAGLView的子节点附加):
- (void)playVideo:(NSString*)filePath
{
NSURL* url = [NSURL fileURLWithPath:filePath];
_moviePlayerController = [[MPMoviePlayerController alloc] initWithContentURL:url];
EAGLView* view = [EAGLView sharedEGLView];
_moviePlayerController.view.frame = view.bounds;
_moviePlayerController.movieSourceType = MPMovieSourceTypeFile;
_moviePlayerController.fullscreen = YES;
_moviePlayerController.controlStyle = MPMovieControlStyleNone;
_moviePlayerController.shouldAutoplay = NO;
[view addSubview:_moviePlayerController.view];
[_moviePlayerController prepareToPlay];
}
- (void)videoFinished:(NSNotification*)notification
{
[_moviePlayerController.view removeFromSuperview];
[_moviePlayerController release];
}
- (void)videoLoadStateChanged:(NSNotification*)notification
{
if ((_moviePlayerController.loadState & MPMovieLoadStatePlayable) != 0)
{
[_moviePlayerController play];
}
}
当播放失败时,我收到以下通知:
MPMoviePlayerNowPlayingMovieDidChangeNotification
MPMovieSourceTypeAvailableNotification
没有别的。当播放工作时,我得到这些:
MPMoviePlayerNowPlayingMovieDidChangeNotification
MPMovieSourceTypeAvailableNotification
(到此为止,与失败时相同)MPMovieMediaTypesAvailableNotification
MPMovieMediaTypesAvailableNotification
MPMovieDurationAvailableNotification
MPMoviePlayerLoadStateDidChangeNotification
MPMoviePlayerLoadStateDidChangeNotification
MPMoviePlayerPlaybackStateDidChangeNotification
MPMovieNaturalSizeAvailableNotification
MPMoviePlayerReadyForDisplayDidChangeNotification
MPMoviePlayerPlaybackStateDidChangeNotification
MPMoviePlayerPlaybackDidFinishNotification
我尝试了几种不同的选择,包括使用MPMoviePlayerViewController,但每次我都得到同样奇怪的行为。有什么想法吗?
答案 0 :(得分:0)
我的问题最终与症状完全无关......
似乎是在iOS 7上运行Crittercism的某种错误。在我们的控制台("(webView:decidePolicyForNavigationAction:request:frame:decisionListener:)
failed to return after waiting 10 seconds"
)中查看调试消息时,我们遇到了这个问题:iOS 7 UIWebView not rendering,建议安装一个更新版的Crittercism。在这之后,我们的视频播放问题似乎已得到解决。