touch事件单击双击区分响应

如果您的 iPhone 应用里有个 view，既有单击操作又有双击操作。用户双击 view 时，总是先执行一遍单击的操作再执行双击的操作。所以直接判断时就会发现不能直接进入双击操作。下面是区分 touch 事件是单击还是双击的方法

-(void)singleTap
{
            NSLog(@"Tap 1 time");
}
-(void)doubleTap{
            NSLog(@"Tap 2 time");
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
            UITouch *touch = [touches anyObject];
            NSTimeInterval delaytime = 0.4;//自己根据需要调整
switch (touch.tapCount) 
{
  case 1:
         [self performSelector:@selector(singleTap) withObject:nil afterDelay:delaytime];
         break;
  case 2:
        [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(singleTap) object:nil];
        [self performSelector:@selector(doubleTap) withObject:nil afterDelay:delaytime];
        break;

        default:
        break;
}
}
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