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AVAudioPlayer正在播放的AudioFile和更新viewcontrollers当播放按钮被击中，它会加载viewcontrollers在不同timeintervals，如果在与用户点击快退按钮将重新启动整个过程，但在两者之间就说明播放按钮的更新流程viewcontrollers。当用户点击后退按钮时，我该如何停止。我想是这样，当用户点击快退按钮，那么它应该在一开始使用冲突更新viewcontrollers
[timer invalidate];
停止更新viewcontrollers对于播放按钮
-(void)rewind:(id)sender{
audioPlayer.currentTime = 0;
[audioPlayer play];
MainViewController *viewController = [[MainViewController alloc] init];
viewController.view.frame = CGRectMake(0, 0, 320, 480);
[self.view addSubview:viewController.view];
[self.view addSubview:toolbar];
[viewController release];
self.timer = [NSTimer scheduledTimerWithTimeInterval:11 target:self selector:@selector(displayviewsAction:) userInfo:nil repeats:NO];
}
-(void)playpauseAction:(id)sender
{
if
([audioPlayer isPlaying]){
[sender setImage:[UIImage imageNamed:@"play.png"] forState:UIControlStateSelected];
[audioPlayer pause];
} else {
[sender setImage:[UIImage imageNamed:@"pause.png"] forState:UIControlStateNormal];
[audioPlayer play];
self.timer = [NSTimer scheduledTimerWithTimeInterval:11 target:self selector:@selector(displayviewsAction:) userInfo:nil repeats:NO];
}
}
- (void)displayviewsAction:(id)sender
{
FirstViewController *viewController = [[FirstViewController alloc] init];
viewController.view.frame = CGRectMake(0, 0, 320, 480);
[self.view addSubview:viewController.view];
[self.view addSubview:toolbar];
[viewController release];
self.timer = [NSTimer scheduledTimerWithTimeInterval:23 target:self selector:@selector(secondViewController) userInfo:nil repeats:NO];
}