UIButton点击后改变背景的方法
摘要：
初始设置：UIImage *bgImg1 = [UIImage imageNamed:@"Selected.png"];UIImage *bgImg2 = [UIImage imageNamed:@"Unselected.png"];[btn setImage:bgImg2 forState:UIControlStateNormal];[btn setImage:bgImg1 forState:UIControlStateSelected];然后在button的Action方法改变button状态：- (IBAction) buttonTouch:(id 阅读全文