//启动页动画UIImageView *launchScreen = [[UIImageView alloc]initWithFrame:[UIScreen mainScreen].bounds];    launchScreen.image = [UIImage imageNamed:@"launchScreen"];    [self.window addSubview:launchScreen];        [UIView animateWithDuration:1.0f animations:^{        launchScreen.alpha = 0;//        CGRect frame = [UIScreen mainScreen].bounds;//        frame.origin.x = frame.size.width;//        launchScreen.frame = frame;    }completion:^(BOOL isFinished){        [launchScreen removeFromSuperview];    }];

 

 

CGRect frame = _confirmV.frame;    [UIView beginAnimations:nil context:nil];//动画定义开始    [UIView setAnimationDuration:0.5];//动画的时长    [UIView setAnimationDelay:0];    [UIView setAnimationDelegate:self];    [UIView setAnimationDidStopSelector:@selector(removeConfirmView)];//动画完成时执行的SEL，必须设置delegate    frame.origin.y += HEIGHT(self.view);//这三句就是要执行的动画语句    targetView.frame = frame;    targetView.alpha -= 0.1;    [UIView commitAnimations];//动画定义结尾

 

 

详细可参考：