iOS 实现多个按钮，点选一个其它都取消选中状态的最佳方法

首先我们先定义一个中间变量

@property (strong,nonatomic)UIButton * tmpBtn;

然后在ViewDidLoad方法里,创建四个按钮，设置它们属性，以及点击方法，在此外设置中间变量tmpBtn = nil;

—（void）viewDidLoad{
NSArray * array = [NSArray arrayWithObjects:@"默认",@"销量",@"价格",@"时间", nil];
for (int i = 0; i<4; i ++) {
UIButton * button = [[UIButton alloc]initWithFrame:CGRectMake(80*i, 0, 80, 40)];
[button setTitle:[array objectAtIndex:i] forState:UIControlStateNormal];
[button setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];
[button setTitleColor:[UIColor blackColor] forState:UIControlStateSelected];
[button.titleLabel setFont:[UIFont systemFontOfSize:14]];
[button.layer setBorderWidth:0.3];
button.userInteractionEnabled = YES;
[button addTarget:self action:@selector(buttonSelected:) forControlEvents:UIControlEventTouchUpInside];
[button setBackgroundColor:[UIColor whiteColor]];
[button setTag:i];
[self.view addSubview:button];

}

下面来看buttonselected:里面的实现过程

-（void）buttonSelected:(UIButton*)sender{
if (_tmpBtn == nil){
sender.selected = YES;
_tmpBtn = sender;
}
else if (_tmpBtn !=nil && _tmpBtn == sender){
sender.selected = YES;

}
else if (_tmpBtn!= btn && _tmpBtn!=nil){
_tmpBtn.selected = NO;
sender.selected = YES;
_tmpBtn = btn;
}

}

代码直接粘贴可用。