避免按钮重复点击

一:避免屏幕内多个button被同时点击

// 一:避免屏幕内多个button被同时点击,在didFinishLaunchingWithOptions方法中
//    [[UIButton appearance] setExclusiveTouch:YES];
           

二：避免单个按钮重复点击

二：点击后设为不可被点击，几秒后恢复

- (IBAction)方法一:(id)sender {
    NSLog(@"点击后设为不可被点击，几秒后恢复");
    _clickNotAbleButton.enabled = NO;
    [self performSelector:@selector(changeButtonStatus) withObject:nil afterDelay:];
}
-(void)changeButtonStatus{
    _clickNotAbleButton.enabled = YES;
}
           

三：在每次点击时先取消之前的操作

//三：afterDelay
- (IBAction)方法三:(id)sender {
    [[self class] cancelPreviousPerformRequestsWithTarget:self selector:@selector(buttonClick) object:nil];
    // 如果这里为3秒，在这三秒里，点击多少次，都只执行一次，buttonClick事件
    [self performSelector:@selector(buttonClick) withObject:nil afterDelay:f];
}

-(void)buttonClick{
    NSLog(@"在每次点击时先取消之前的操作");
}
           

四：runtime,后面文章有