一，设置单选效果

- (void)selectedBtnPress:(UIButton*)sender

{

//首先把原来按钮的选中效果消除

for (int i=0;i<num;i++) {//num为总共设置单选效果按钮的数目

UIButton *btn = (UIButton*)[view viewWithTag:i];//view为这些btn的父视图

btn.selected = NO;

}

sender.selected = YES;//sender.selected = !sender.selected;

}

二 UIButton同时设置图片和标题

//UIEdgeInsetsMake(top.left.bottom,right)里面的四个参数表示距离上边界、左边界、下边界、右边界的距离，默认都为零，title／image在button的正*

//图在左侧，标题在右侧

UIButton *oneBtn = [UIButtonbuttonWithType:UIButtonTypeCustom];

oneBtn.frame = CGRectMake(50, 50, 150, 50);

oneBtn.backgroundColor = [UIColoryellowColor];

[oneBtn setImage:[UIImageimageNamed:@"0.gif"] forState:UIControlStateNormal];

oneBtn.imageEdgeInsets = UIEdgeInsetsMake(5, 5, 5, 100);

[oneBtn setBackgroundImage: [UIImageimageNamed:@"修改口味.png"] forState:UIControlStateNormal];

[oneBtn setTitle:@"按钮"forState:UIControlStateNormal];

oneBtn.titleEdgeInsets = UIEdgeInsetsMake(5, 50, 10, 10);

[self.view addSubview: oneBtn];

二 避免同一界面里的两个UIButton同时被选中，触发action事件

button.exclusiveTouch = YES;