我想暂停UIImageView animation ，并根据我的研究发现，你可以停止图像的动画，但你不能暂停序列。 通过调用语句stop animating上UIImageView然后停止播放动画，显示空白图像视图。
要暂停UIImages动画一个必须使用NSTimer 。
我米已经使用一个NSTimer在应用程序，用于加载view controllers一前一后在不同时间间隔。 我的幻灯片放映UIImages在每个view controller 。
问题是当定时器暂停view controllers从进一步加载已暂停但view controller是上显示当时仍显示的幻灯片放映UIImages那个的view controller反复直到暂停重新开始。 所以我想以暂停幻灯片了。
这是使用IM NSTimer
-(void)playpauseAction:(id)sender {
if([audioPlayer isPlaying])
{
[sender setImage:[UIImage imageNamed:@"Play Icon.png"] forState:UIControlStateSelected];
[audioPlayer pause];
[self pauseTimer];
}else{
[sender setImage:[UIImage imageNamed:@"pause.png"] forState:UIControlStateNormal];
[audioPlayer play];
[self resumeTimer];
if(isFirstTime == YES)
{
self.timer = [NSTimer scheduledTimerWithTimeInterval:11.0
target:self
selector:@selector(displayviewsAction:)
userInfo:nil
repeats:NO];
isFirstTime = NO;
}
}
}
这是如何displayviewsAction在不同的时间间隔11个加载视图控制器陆续
- (void)displayviewsAction:(id)sender
{
First *firstController = [[First alloc] init];
firstController.view.frame = CGRectMake(0, 0, 320, 480);
CATransition *transitionAnimation = [CATransition animation];
[transitionAnimation setDuration:1];
[transitionAnimation setType:kCATransitionFade];
[transitionAnimation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn]];
[self.view.layer addAnimation:transitionAnimation forKey:kCATransitionFade];
[self.view addSubview:firstController.view];
[self.view addSubview:toolbar];
[firstController release];
self.timer = [NSTimer scheduledTimerWithTimeInterval:23 target:self selector:@selector(Second) userInfo:nil repeats:NO];
}
-(void)Second
{
Second *secondController = [[Second alloc] init];
secondController.view.frame = CGRectMake(0, 0, 320, 480);
CATransition *transitionAnimation = [CATransition animation];
[transitionAnimation setDuration:1];
[transitionAnimation setType:kCATransitionReveal];
[transitionAnimation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn]];
[self.view.layer addAnimation:transitionAnimation forKey:kCATransitionReveal];
[self.view addSubview:secondController.view];
[self.view addSubview:toolbar];
[secondController release];
self.timer = [NSTimer scheduledTimerWithTimeInterval:27 target:self selector:@selector(Third) userInfo:nil repeats:NO];
}
这就是视图控制器内如何启动图像动画
// Displays UIImageView
UIImageView* ImageView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 5, 300, 235)];
self.view.backgroundColor = [UIColor brownColor];
// load all the frames of our animation
ImageView.animationImages = [NSArray arrayWithObjects:
[UIImage imageNamed:@"1a.png"],
[UIImage imageNamed:@"1b.png"],
nil];
// all frames will execute in 25 seconds
ImageView.animationDuration = 25;
// start animating
[ImageView startAnimating];
ImageView.layer.borderWidth = 2;
ImageView.layer.borderColor = [[UIColor whiteColor]CGColor];
[ImageView.layer setMasksToBounds:YES];
[ImageView.layer setCornerRadius:15.0f];
[baseView addSubview:ImageView];
现在，如果有人能指导我如何暂停的这个幻灯片UIImage animation时，这个NSTimer暂停。
感谢帮助。
