在UIScrollView中拖动UIView，并为兄弟视图启用手势识别器

Question

我的应用中有以下视图层次结构：

-- UIScrollView (canCancelContentTouches is NO)
   -- UIView #1 (UISwipeGestureRecognizer is bound to it to track horizontal swipes)
      -- UIView #2 (touchesBegan/touchesMoved/touchesEnded are implemented here to allow
                    dragging this view inside its parent; implementation is very
                    straightforward and I'm NOT calling supermethods here).

当我开始拖动视图＃2时，它有时会触发滑动手势识别器。我无法真正看到这种模式，但这种情况经常发生。

拖动时有没有办法抑制触摸处理？

Answer 1

在视图＃2上使用UIPanGestureRecognizer，而不是直接处理触摸。在两个识别器的委托中，从gestureRecognizer:shouldRecognizeSimultaneouslyWithGestureRecognizer:返回NO。

OR

在UISwipeGestureRecognizer的委托中，执行以下内容：

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
    return gestureRecognizer.view == touch.view;
}