iphone - 如何在目标 c 中向视图添加乘法动画？

Question

我想向视图添加多个动画。我只能添加一个，...我不想连接

[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:kAnimationDuration];
//self.square.bounds = CGRectMake(0, 0, self.square.bounds.size.height, 200);
//self.transform = CGAffineTransformMakeScale(2, 1);


CGAffineTransform scaleTrans1 = CGAffineTransformMakeScale(2, 1);

self.transform = scaleTrans1;
[UIView commitAnimations];

Answer 1

您可以使用 UIView 中的 animateWithDuration （在其任何变体中），只要您尝试动画的属性实际上是可动画的（查看UIView / Animations）。

例如：

[UIView animateWithDuration:1.0f
animations: ^ {
    self.square.bounds = CGRectMake(0, 0, self.square.bounds.size.height, 200);
    self.transform = CGAffineTransformMakeScale(2, 1);
}];

希望能帮助到你！

Answer 2

我确实喜欢这个及其工作

- (void)drawRect:(CGRect)rect
{    
    [UIView animateWithDuration:4.0f animations:^{
        self.transform = CGAffineTransformMakeScale(2, 1);
    } completion:^(BOOL finished){
        [UIView animateWithDuration:4.0f animations:^{
           self.transform = CGAffineTransformMakeScale(0.75, 1);
        } completion:^(BOOL finished){
            [UIView animateWithDuration:4.0f animations:^{
              self.transform = CGAffineTransformMakeScale(2, 1);  
            } completion:^(BOOL finished) {
                [UIView animateWithDuration:4.0f animations:^{
                    self.transform = CGAffineTransformMakeScale(0.75, 1);
                }];
            }];
        }];
    }];


}