从一个位置移动到另一个位置后，UIButton框架发生了变化

Question

我在public void onBindViewHolder(EntryViewHolder holder, int position) { final EntryViewHolder h = holder; final Cursor cursor = mContext.getContentResolver().query(Uri.parse( queryUri), null, null, null, sortOrder); if (cursor != null) { if (cursor.moveToPosition(position)) { int indexWord = cursor.getColumnIndex(Contract.WordList.KEY_ENTRY); word = cursor.getString(indexWord); holder.entryItemView.setText(word); int indexNickDate = cursor.getColumnIndex(Contract.WordList.KEY_NICKNAME_DATE); nickdate=cursor.getString(indexNickDate); holder.tvdatetime.setText(nickdate); int indexId = cursor.getColumnIndex(Contract.WordList.KEY_ID); id = cursor.getInt(indexId); int indexHeart= cursor.getColumnIndex(Contract.WordList.KEY_HEART); heart= cursor.getInt(indexHeart); if(heart==0){ holder.imageHeart.setImageResource(R.drawable.like);} else if(heart==1){ h.imageHeart.setImageResource(R.drawable.heart);} // Toast.makeText(mContext, "constant.nickname : " +nickdate , Toast.LENGTH_SHORT).show(); } else { holder.entryItemView.setText(R.string.error_no_word); } cursor.close(); } else { Log.e (TAG, "onBindViewHolder: Cursor is null."); } holder.imageHeart.setOnClickListener(new MyButtonOnClickListener(id, word, heart) { @Override public void onClick(View v) { if (heart==0){ h.imageHeart.setImageResource(R.drawable.heart); heart=1; WordListOpenHelper2 woh2= new WordListOpenHelper2(mContext); woh2.insert(word, nickdate, heart); Toast.makeText(v.getContext(), word + " " + nickdate , Toast.LENGTH_LONG).show(); ///HERE word is always true but nickdates are mixed. Couldnt figure out why:/ } 中有1个UIButton，就像下面的屏幕所示，并且通过遵循此Answer，我将StoryBoard从一个位置移动到另一个位置。

修改

我想旋转UIButton的另一件事，为此我尝试了以下代码，并且工作正常，但是在旋转UIButton时，当我尝试将UIButton的位置从1个位置移动到另一个UIButton帧被更改。

整个UIButton代码。

UIButton

编辑1

我上传了问题视频。

编辑2

如果我分别使用class DraggableButton: UIButton { var localTouchPosition : CGPoint? var lastRotation: CGFloat = 0 required init?(coder aDecoder: NSCoder) { super.init(coder: aDecoder) // ROTATION CODE let rotate = UIRotationGestureRecognizer(target: self, action:#selector(rotatedView(_:))) self.addGestureRecognizer(rotate) } // SCROLLING CONTENT FROM ONE POSITION TO ANOTHER override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { super.touchesBegan(touches, with: event) let touch = touches.first self.localTouchPosition = touch?.preciseLocation(in: self) } override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) { super.touchesMoved(touches, with: event) let touch = touches.first guard let location = touch?.location(in: self.superview), let localTouchPosition = self.localTouchPosition else{ return } self.frame.origin = CGPoint(x: location.x - localTouchPosition.x, y: location.y - localTouchPosition.y) print(self.frame) } override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) { super.touchesEnded(touches, with: event) self.localTouchPosition = nil } override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) { super.touchesCancelled(touches, with: event) self.localTouchPosition = nil } // ROTATION CODE @objc func rotatedView(_ sender: UIRotationGestureRecognizer) { var originalRotation = CGFloat() if sender.state == .began { sender.rotation = lastRotation originalRotation = sender.rotation } else if sender.state == .changed { let newRotation = sender.rotation + originalRotation sender.view?.transform = CGAffineTransform(rotationAngle: newRotation) } else if sender.state == .ended { lastRotation = sender.rotation } } } 旋转和运动代码，那么它可以工作，但是当我同时编写这两个代码时，会产生此问题。

Answer 1

我认为问题在于旋转是围绕视图的中心，因此，当您应用旋转时，框架尺寸会增加，这会偏离相对于框架原点的距离。

我能够通过相对于视图中心移动视图来解决此问题：

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    super.touchesBegan(touches, with: event)
    let touch = touches.first
    guard let location = touch?.location(in: self.superview) else { return }

    // Store localTouchPosition relative to center
    self.localTouchPosition = CGPoint(x: location.x - self.center.x, y: location.y - self.center.y)
}

override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
    super.touchesMoved(touches, with: event)
    let touch = touches.first
    guard let location = touch?.location(in: self.superview), let localTouchPosition = self.localTouchPosition else{
        return
    }

    self.center = CGPoint(x: location.x - localTouchPosition.x, y: location.y - localTouchPosition.y)
    print(self.frame)
}