UIControl在VC的左侧触摸不正常

Question

我有一个UIControl(UIView的子类),当我创建它并将它对齐到我的视图控制器的左侧时,当我触摸视图时,"beginTrackingWithTouch"无法被调用.它只会在我释放触摸时被调用.奇怪的是,当我触摸UIControl时会立即调用pointInside(point:CGPoint ...)方法,甚至更奇怪的是当我在视图控制器的右侧对齐这个UIControl视图时,它工作正常 - 触摸视图时立即调用-beginTrackingWithTouch,而不是在释放时调用.另外,在调用endTrackingWithTouch的同时调用beginTrackingWithTouch.通过一些测试,它工作正常,直到视图从左侧20像素,然后这个奇怪的问题再次发生.

有没有理由说UIControl continueTrackingWithTouch如果放在视图控制器的最左侧则无法注册？这是Apple防止左手滚动的方式吗？左侧绝对没有阻挡UIControl的东西.

//In public class CustomScrollBar : UIControl

//This method gets called everytime when UIControl (red area in picture) is touched
override public func pointInside(point: CGPoint, withEvent event: UIEvent?) -> Bool {
    return CGRectContainsPoint(handleHitArea, point)
}

//Only gets called when UIControl is touched and let go.  It will not get called until your finger lifts off the screen.
override public func beginTrackingWithTouch(touch: UITouch, withEvent event: UIEvent?) -> Bool {

    self.scrollerLine.hidden = true

    if let delegate = self.delegate {
        delegate.beginTrackingWithTouch()
    }

    guard self.isHandleVisible else{
        return false
    }

    self.lastTouchLocation = touch.locationInView(self)
    self.isHandleDragged = true

    self.setNeedsLayout()

    return true
}

//下图:UIControl视图位于左侧(浅蓝色).如果我在最右侧移动它,方法注册正常.

Answer 1

导航控制器有一个内置的后退手势识别器，将其设置为 false。确保它已在 viewDidAppear 中设置

self.navigationController!.interactivePopGestureRecognizer!.enabled = false