從UILongPressGestureRecognizer的每個觸摸獲取座標

Question

我有一個UILongPressGestureRecognizer設置與numberOfTouchesReguired = 2。如何獲得視圖上每個手指的連續座標？

目前我有這個，但它似乎將所有觸摸的位置合併爲1個座標。

 
- (void)handleLongPress:(UILongPressGestureRecognizer *)sender { 
    CGPoint locationInView = [sender locationInView:nil]; 
}

Answer 1

查看文檔UIGestureRecognizer。它提供了這樣的方法：

- (void)handleLongPress:(UILongPressGestureRecognizer *)sender { 
    if (sender.state == UIGestureRecognizerStateChanged) { 
     NSUInteger *touchCount = [sender numberOfTouches]; 
     for (NSUInteger t = 0; t < touchCount; t++) { 
      CGPoint point = [sender locationOfTouch:t inView:sender.view]; 
     } 
    }