iOS修改transform形变也能够实现动画

之前的一篇文章提到UIView实现动画里面核心是修改frame，其实修改transform形变也能够实现动画

- (IBAction)moveUp:(id)sender {
//平移
[UIView animateWithDuration:0.5 animations:^{
//使用Make,它是相对于最原始的位置做的形变.
//self.imageV.transform = CGAffineTransformMakeTranslation(0, -100);
//相对于上一次做形变.
self.imageV.transform = CGAffineTransformTranslate(self.imageV.transform, 0, -100);
}];

}
- (IBAction)moveDown:(id)sender {

//平移
[UIView animateWithDuration:0.5 animations:^{
//使用Make,它是相对于最原始的位置做的形变.
//self.imageV.transform = CGAffineTransformMakeTranslation(0, -100);
//相对于上一次做形变.
self.imageV.transform = CGAffineTransformTranslate(self.imageV.transform, 0, 100);
}];
}

- (IBAction)rotation:(id)sender {

[UIView animateWithDuration:0.5 animations:^{

//旋转(旋转的度数, 是一个弧度)
//self.imageV.transform = CGAffineTransformMakeRotation(M_PI_4);

self.imageV.transform = CGAffineTransformRotate(self.imageV.transform, M_PI_4);

}];

}

- (IBAction)scale:(id)sender {

[UIView animateWithDuration:0.5 animations:^{

//缩放
//self.imageV.transform = CGAffineTransformMakeScale(0.5, 0.5);
self.imageV.transform = CGAffineTransformScale(self.imageV.transform, 0.8, 0.8);

}];

}