iPad应用程序-触摸开始双击不正确

我有一个UIViewController，它具有touchesBegind功能并输出位置

- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { 
    NSLog(@"in");

    NSArray *touchesArray = [touches allObjects];
    for(int i=0; i<1; i++)
    {
        UITouch *touch = (UITouch *)[touchesArray objectAtIndex:i];
        CGPoint point = [touch locationInView:touch.view];
        NSLog(@"point = %f %f",point.x,point.y);
    }
}

为什么第二次点击被注册为（39,22）…就像iPad的左上角一样。但是，我在中间敲击。

所以，我想用两种方法来解决这个问题：

1) somehow, not let the user double tap (however it seems even when I double tap fast, the touchesBegan function is called on two separate occassions)
2) figure out why that 2nd tap is being registered with the wrong coordinates.

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它应该是CGPoint=[touch locationInView:self.view]；。。。当您轻触两次时，不会出现“touch.view”

1）触摸开始：withEvent:将被调用两次。（这就是它的工作原理）2）我怀疑你的双水龙头的每个水龙头都落在两个不同的视图中，别问我怎么不知道。但最合理的解决方案是将您的位置索引到一个已知的视图，例如：

locationInView:self.view

而不是

touch.view

，它将是触摸通过命中测试的任何视图。是的，这是有效的。不知道我为什么要放touch.view，哈哈，谢谢！

1) somehow, not let the user double tap (however it seems even when I double tap fast, the touchesBegan function is called on two separate occassions)
2) figure out why that 2nd tap is being registered with the wrong coordinates.