获取视频停止播放时已经播放的时间

获取停止,暂停时视频已经播放的时间主要靠注册通知,当暂停或停止时响应通知时间,获取当前已经播放的时间,同时也可以在视频开始播放时给一个播放时间,从当前播放时间播放视频,用此方法来达到播放视频从上次播放时间开始播放

主要代码

  MPMoviePlayerViewController *mPlayer = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL URLWithString:self.itemVideoUrl]];
            [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playbackDidFinish:) name:MPMoviePlayerPlaybackDidFinishNotification object:mPlayer.moviePlayer];
            [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playbackStateDidChange:) name:MPMoviePlayerPlaybackStateDidChangeNotification object:mPlayer.moviePlayer];

#pragma mark - 视频停止播放的通知,用来获取视频停止播放时已经播放的时间
- (void)playbackDidFinish:(NSNotification *)aNote
{
    MPMoviePlayerController *moviePlayer = [aNote object];
    NSDictionary *userInfo = [aNote userInfo];
    int reason = [[userInfo objectForKey:@"MPMoviePlayerPlaybackDidFinishReasonUserInfoKey"] intValue];
    switch (reason) {
        case MPMovieFinishReasonPlaybackEnded:
            break;
        case MPMovieFinishReasonPlaybackError:
            break;
        case MPMovieFinishReasonUserExited:
            break;
        default:
            break;
    }

    CGFloat playtime = [moviePlayer currentPlaybackTime];
    NSLog(@"%f", playtime);
    [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:moviePlayer];
}
- (void)playbackStateDidChange:(NSNotification *)aNote
{
    MPMoviePlayerController *moviePlayer = [aNote object];
    switch (moviePlayer.playbackState) {
        case MPMoviePlaybackStateStopped:
            NSLog(@"self.moviePlayer Stopped");
            break;
        case MPMoviePlaybackStatePlaying:
//设置开始播放视频时的时间
            moviePlayer.currentPlaybackTime = 300.07;
            NSLog(@"self.moviePlayer Playing");
            break;
        case MPMoviePlaybackStatePaused:
            NSLog(@"self.moviePlayer Paused");
            break;
        case MPMoviePlaybackStateInterrupted:
            NSLog(@"self.moviePlayer Interrupted");
            break;
        case MPMoviePlaybackStateSeekingForward:
            NSLog(@"self.moviePlayer Forward");
            break;
        case MPMoviePlaybackStateSeekingBackward:
            NSLog(@"self.moviePlayer Backward");
            break;
        default:
            break;
    }

    CGFloat playtime = [moviePlayer currentPlaybackTime];
    NSLog(@"%f", playtime);
}

1.视频什么时候开始播放

当视频开始播放时会发送MPMediaPlaybackIsPreparedToPlayDidChangeNotification，所以你只需要在注册

MPMediaPlaybackIsPreparedToPlayDidChangeNotification通知，当接收到此通知说明视频开始播放。

2.自定义播放器视图时怎么自定义声音控件

使用MPVolumeView控制系统的声音大小。通过改变MPVolumeView slider的值可以改变系统的声音，同时通过调节系统的声音按钮，slider的值也会跟着改变。

volumeView = [[MPVolumeView alloc] initWithFrame:CGRectMake(310, 180, 100, 20)];

volumeView.showsVolumeSlider = YES;

[backView addSubview:volumeView];

[volumeView release];

3.通过presentModalViewController调出MPMoviePlayer所在控制器，当通过dismissModalViewController移除控制器时，手机的状态栏可能会消失。解决办法：在dismissModalViewController调用函数

movieplayer.controlStyle = MPMovieControlStyleFullScreen;

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, delay * NSEC_PER_SEC), dispatch_get_current_queue(), ^{

[UIApplication sharedApplication].statusBarHidden = NO;

});