多次触摸时 TouchMoved 的奇怪问题

Question

我已经编写了代码，可以让您点击按钮并为每个按钮播放声音，以及在按钮上滑动手指并让每个按钮在您进入按钮区域时播放相应的声音。它工作得很好，除了一个奇怪的错误：

如果你同时按两个按钮，它首先会播放两种声音。但是，如果您继续将手指放在按钮上，然后将手指从屏幕上松开，同时稍微移动其中一根手指（仍在每个按钮的范围内），它将播放两个按钮的声音之一。我怎样才能防止这种情况发生？我只希望当您在按钮上滑动手指或最初点击它们时播放声音，而不是当您在同时点击两个按钮时稍微移动它们然后释放手指时播放声音。

下面是我的代码：

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{   
    NSSet *allTouches = [event allTouches];
    touchesCount = [allTouches count];

    for(UITouch *t in touches) {

        CGPoint location = [t locationInView:t.view];

        if(CGRectContainsPoint(soundButton1.frame, location)) 
        {
            if (!soundButton1.isHighlighted && touchesCount < 2){
                soundID = @"0";
                [self playSound];
                [soundButton1 setHighlighted:YES];
            }
        }
        else {
            [soundButton1 setHighlighted:NO];
        }
        if(CGRectContainsPoint(soundButton2.frame, location)) 
        {
            if (!soundButton2.isHighlighted && touchesCount < 2){
                soundID = @"1";
                [self playSound];
                [soundButton2 setHighlighted:YES];
            }
        }
        else {
            [soundButton2 setHighlighted:NO];
        }
    }
}

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{

    for(UITouch *t in touches) {

        CGPoint location = [t locationInView:t.view];

          if(CGRectContainsPoint(soundButton1.frame, location)) 
        {
            [soundButton1 setHighlighted:YES];
            soundID = @"0";
            [self playSound];
        }
        if(CGRectContainsPoint(soundButton2.frame, location)) 
        {
            [soundButton2 setHighlighted:YES];
            soundID = @"1";
            [self playSound];
        }
    }
}

-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
  for(UITouch *t in touches) {
    CGPoint location = [t locationInView:t.view];
         if(CGRectContainsPoint(soundButton1.frame, location)) 
            {
            [soundButton1 setHighlighted:NO];
        }
        if(CGRectContainsPoint(soundButton2.frame, location)) 
        {
            [soundButton2 setHighlighted:NO];
        }
   }
}

Answer 1

尝试在很短（非常）的时间内禁用声音。在 touchesEnded:withEvent: 中，检查是否有两次触摸，然后执行类似的操作，

soundDisabled = YES;

您可以请求选择器在延迟后运行

[self performSelector:@selector(enableSound) withObject:nil afterDelay:0.2];

，然后

- (void)enableSound {
    soundDisabled = NO;
}

或者您可以等待第二根手指向上，然后然后

soundDisabled = NO;