Question

我需要使用MPMoviePlayerController在我的UIViewcontroller中播放视频。因此，在播放视频之前，我需要在视频缓冲之前显示活动指标视图。视频开始播放后，我需要删除活动指示器。我无法在视频开始播放后立即了解如何获得通知。对此提出任何建议都会有很大帮助。感谢。

Answer 1

你可能正在寻找这样的东西：

- (void)viewDidAppear:(BOOL)animated {
    NSLog(@"VIEW DID LOAD");
    // Register to receive a notification that the movie is now in memory and ready to play
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(movieLoadStateDidChange:)
                                                 name:MPMoviePlayerLoadStateDidChangeNotification
                                               object:nil];

}

-(void)movieLoadStateDidChange:(id)sender{
    NSLog(@"STATE CHANGED");
    if(MPMovieLoadStatePlaythroughOK ) {
        NSLog(@"State is Playable OK");
        NSLog(@"Enough data has been buffered for playback to continue uninterrupted..");
        aiv.hidden = YES;
        [aiv stopAnimating];
    }

}

我也从这个链接中找到了可能对你有用的信息：http://www.sdkboy.com/?p=48

Answer 2

if（MPMovie LoadState Playthrough）{ - 此检查不正确。这总是正确的。

看看： Can a UIActivityIndicator be displayed over a MPMoviePlayerController in full screen mode?

如何在视频开始播放之前使用活动指示器使用MPMoviePlayerController？

2 个答案: