UIButton *signBtn = [UIButton buttonWithType:UIButtonTypeCustom]; 
 
signBtn.frame = CGRectMake(0, 0, 80, 40); 
 
[signBtn.layer setMasksToBounds:YES]; 
 
[signBtn.layer setCornerRadius:10.0]; //设置矩形四个圆角半径 
 
[signBtn.layer setBorderWidth:1.0]; //边框宽度 
 
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); 
 
CGColorRef colorref = CGColorCreate(colorSpace,(CGFloat[]){ 1, 0, 0, 1 });  
 
[signBtn.layer setBorderColor:colorref];//边框颜色 
 
[signBtn setTitle:@"还  原" forState:UIControlStateNormal];//button title 
 
[signBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];//title color 
 
[signBtn addTarget:self action:@selector(buttonDonwRecover:) forControlEvents:UIControlEventTouchUpInside];//button 点击回调方法 
 
signBtn.backgroundColor = [UIColor whiteColor]; 
 
- (void)buttonDonwRecover:(id)sender 
 
{ 
 
    UIButton *btn = (UIButton *)sender; 
 
}