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Touch Event stay in view swift

我的情况是我有两个视图，一个视图-> MoveView应该可以在另一个视图-> FrameView 。 但是当移动内部视图时，可以将其移动到FrameView之外！ 希望所有的Views不会打扰您； D！

override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
    var MoveViewLocation = CGPoint()
    super.touchesBegan(touches , withEvent:event)
    if let touch = touches.first as? UITouch {
        MoveViewLocation = touch.locationInView(FrameView)
        MoveView.center = MoveViewLocation
    }
}