首页 > 代码库 > iOS缩放、旋转UIButton

iOS缩放、旋转UIButton

2024-07-18 15:33:26   218人阅读

在练习缩放旋转UIButton控件时，出现点击控件x,y同时增加或者减一定像素，经过查找是xcode5开启了Auto Layout.

放大缩小的代码

- (IBAction)btnScale:(UIButton *)sender {    //动画开始，设置执行时间    [UIView beginAnimations:nil context:nil];    [UIView setAnimationDuration:1];    int tag = [sender tag];    float scale = tag == 8? 1.2: 0.8;    //CGAffineTransform _transform = _btn.transform;    _btn.transform = CGAffineTransformScale(_btn.transform, scale, scale);    //_transform = _btn.transform;    //提交动画    [UIView commitAnimations];}

 左右旋转的代码

- (IBAction)btnRotate:(UIButton *)sender {    [UIView beginAnimations:nil context:nil];    [UIView setAnimationDuration:1];    int tag = [sender tag];    int rotate = tag == 7? 1: -1;    _btn.transform = CGAffineTransformRotate(_btn.transform, M_PI_4*rotate);    //int rotate = tag==7? 1: -1;    //_btn.transform = CGAffineTransformRotate(_btn.transform, M_PI_4*rotate);    [UIView commitAnimations];}

 还原控件的操作

- (IBAction)btnReset:(UIButton *)sender {    [UIView beginAnimations:nil context:nil];    [UIView setAnimationDuration:1];    sender.transform = CGAffineTransformIdentity;    [UIView commitAnimations];}

 


联系
我们