iOS开发---UIButton 1 //创建一个可以显示图片的按钮。

 1 //创建一个可以显示图片的按钮。
 2 -(void)creatImageBtn{
 3     UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
 4     btn.frame = CGRectMake(100, 100, 100, 100);
 5     UIImage *icon1 = [UIImage imageNamed:@"icon1.png"];
 6     UIImage *icon2 = [UIImage imageNamed:@"icon2.png"];
 7     [btn setImage:icon1 forState:UIControlStateNormal];
 8     [btn setImage:icon2 forState:UIControlStateHighlighted];
 9     [self.view addSubview:btn];
10 }
11