Objective c 轮换及；挤压（缩放）手势会弄乱父视图及其子视图框架

我试图在包含多个子视图（UIButton、UITextView）的UIView上实现挤压和旋转手势。 为了您的方便，将代码组织在下面

我猜我错过了什么。不知道那是什么。谢谢大家!

结果:

代码

比例：

 var scaleAnchorPoint = CGPoint()

    func handleSizeIncreasing(sender:UIPinchGestureRecognizer) {
        if sender.state == UIGestureRecognizerState.Began
        {
            print("Began")
            scaleAnchorPoint = self.center
        }

        else if sender.state == UIGestureRecognizerState.Changed
        {
            txtView.transform = CGAffineTransformScale(txtView.transform, sender.scale, sender.scale)
            sender.scale = 1.0
            self.frame.size = CGSizeMake(txtView.frame.width + buttonSize, txtView.frame.height + buttonSize)
            self.center = scaleAnchorPoint
            updateViews(scaleAnchorPoint)
            print("Changed")
        }

    }

轮换：

var rotateAnchorPoint = CGPoint()

func handleRotate(sender : UIRotationGestureRecognizer) {

    if sender.state == UIGestureRecognizerState.Began
    {
        print("Began")
        rotateAnchorPoint = self.center
    }

    else if sender.state == UIGestureRecognizerState.Changed
    {
        sender.view!.transform = CGAffineTransformRotate(sender.view!.transform, sender.rotation)
        sender.rotation = 0
        updateViews(rotateAnchorPoint)
        print("Changed")
    }



}

一方：

---

我明白了。简单地说，当缩放/帧发生变化时，不要像我在这里那样访问

帧

：

self.frame.size=CGSizeMake（txtView.frame.width+buttonize，txtView.frame.height+buttonize）

访问self.bounds，如下所示-

 self.bounds.size = CGSizeMake(txtView.frame.width + buttonSize, txtView.frame.height + buttonSize)

享受吧

 self.bounds.size = CGSizeMake(txtView.frame.width + buttonSize, txtView.frame.height + buttonSize)