我将一组图像加载到一个uiimageview中,并在一个周期内设置动画。显示图像后,我希望调用@selector
,以便关闭当前视图控制器。使用以下代码可以很好地设置图像的动画:
NSArray * imageArray = [[NSArray alloc] initWithObjects:
[UIImage imageNamed:@"HowTo1.png"],
[UIImage imageNamed:@"HowTo2.png"],
nil];
UIImageView * instructions = [[UIImageView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
instructions.animationImages = imageArray;
[imageArray release];
instructions.animationDuration = 16.0;
instructions.animationRepeatCount = 1;
instructions.contentMode = UIViewContentModeBottomLeft;
[instructions startAnimating];
[self.view addSubview:instructions];
[instructions release];
16秒后,我想调用一个方法。我查看了
UIView
类方法setAnimationDidStopSelector:
,但无法使其与当前的动画实现协同工作。有什么建议吗?谢谢。
最佳答案
使用performSelector:withObject:afterDelay:
:
[self performSelector:@selector(animationDidFinish:) withObject:nil
afterDelay:instructions.animationDuration];
或使用
dispatch_after
:dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, instructions.animationDuration * NSEC_PER_SEC);
dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
[self animationDidFinish];
});