将UIPanGestureRecognizer限制为特定区域

Question

在我看来，我在右侧部分3 UISlider和左侧部分，用户可以使用UIPanGestureRecognizer滑动菜单。有时，当用户使用滑块时，它也会拖动视图。我不希望这种情况发生。我在panLayer方法中有这个代码：

- (IBAction)panLayer:(UIPanGestureRecognizer *)pan {

if (pan.state == UIGestureRecognizerStateChanged) {
    CGPoint point= [pan translationInView:self.topLayer];
    CGRect frame = self.topLayer.frame;
    frame.origin.x = MIN(258.0f, self.layerPosition + point.x);
    if (frame.origin.x < 0) frame.origin.x = 0;
    self.topLayer.frame = frame;
 }
if (pan.state == UIGestureRecognizerStateEnded) {
    if (self.topLayer.frame.origin.x <=160) {
        [self animateLayerToPoint:0];
    }
    else {
        [self animateLayerToPoint:VIEW_HIDDEN];
    }
 }


}

我想用x位置创建一个if语句。像这样：

if (firstTouch.x < 150 && firstTouch.x > 0) {
   //Add my previous code
}

如何在视图中访问firstTouch，如果它在此区域，请运行UIPanGestureRecognizer？

由于

Answer 1

这可以通过采用UIGestureRecognizerDelegate并实现以下方法轻松实现：

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