我为AVPlayer创建了一个用于擦除器UISlider的方法。在播放歌曲（第一次播放）时它工作正常。当我点击UISlider（scrubber）改变歌曲位置然后歌曲计时器（audioPlayerTimerLabel）显示正确的值而歌曲也改变它的位置并且歌曲播放正常， 但是UISlider不能正常工作。例如，当我触摸它并向前移动它会很好，但是当我释放（释放）它时，它会回到错误的位置。 （歌曲+歌曲计时器工作正常） 任何建议都会很棒。提前致谢 ！！！..... 我的代码：
- (IBAction)audioPlayerValueChanged:(UISlider *)aSlider {
[player seekToTime:CMTimeMakeWithSeconds(duration_seconds*aSlider.value, 1)];
}
- (void)updateTime:(NSTimer *)timer {
currentTime = CMTimeGetSeconds(playerItem.currentTime);
duration = CMTimeGetSeconds(playerItem.duration);
self.audioSliderBar.continuous = YES;
[self.audioSliderBar setValue:(currentTime/duration)];
float minutes = floor(currentTime/60);
seconds =currentTime - (minutes * 60);
float duration_minutes = floor(duration/60);
duration_seconds =
duration - (duration_minutes * 60);
NSString *timeInfoString = [[NSString alloc]
initWithFormat:@"%0.0f:%0.0f",
minutes, seconds ];//],
self.audioCurrentTimeLabel.text = timeInfoString;
}
-(IBAction)touchDown:(id)sender {
[player pause];
[nsTimer invalidate];
}
-(IBAction)touchUp:(id)sender {
[player play];
nsTimer2=[NSTimer scheduledTimerWithTimeInterval:1.0/60.0 target:self selector:@selector(updateTime:) userInfo:nil repeats:YES];
}