Picure在Android Puzzle游戏中单击图片拖动

Question

我尝试了StackOverflow建议的所有可能方式  但是我无法从单击更改为拖动

OnTouch事件用于单击..，我的图像在此单击。而且我无法拖放图像。我需要拖动图像而不是单击...

我将非常感谢您。如果您在这方面帮助我

我也尝试过这种情况 Drag and Drop and OnClick TextView 但是我没有任何结果。所以任何人都可以帮我！

有人可以帮我吗？

public class TouchListener implements View.OnTouchListener {
    private float xDelta;
    private float yDelta;
    private PuzzleActivity activity;

    public TouchListener(PuzzleActivity activity) {
        this.activity = activity;
    }

    @Override
    public boolean onTouch(View view, MotionEvent motionEvent) {
        float x = motionEvent.getRawX();
        float y = motionEvent.getRawY();
        final double tolerance = sqrt(pow(view.getWidth(), 2) + pow(view.getHeight(), 2)) / 10;

        PuzzlePiece piece = (PuzzlePiece) view;
        if (!piece.canMove) {
            return true;
        }

        RelativeLayout.LayoutParams lParams = (RelativeLayout.LayoutParams) view.getLayoutParams();
        switch (motionEvent.getAction() & MotionEvent.ACTION_MASK) {
            case MotionEvent.ACTION_DOWN:
                xDelta = x - lParams.leftMargin;
                yDelta = y - lParams.topMargin;
                piece.bringToFront();
                break;
            case MotionEvent.ACTION_MOVE:
                lParams.leftMargin = (int) (x - xDelta);
                lParams.topMargin = (int) (y - yDelta);
                view.setLayoutParams(lParams);
                break;
            case MotionEvent.ACTION_UP:
                int xDiff = abs(piece.xCoord - lParams.leftMargin);
                int yDiff = abs(piece.yCoord - lParams.topMargin);
                if (xDiff <= tolerance && yDiff <= tolerance) {
                    lParams.leftMargin = piece.xCoord;
                    lParams.topMargin = piece.yCoord;
                    piece.setLayoutParams(lParams);
                    piece.canMove = false;
                    sendViewToBack(piece);
                    activity.checkGameOver();
                }
                break;
        }

        return true;
    }

    public void sendViewToBack(final View child) {
        final ViewGroup parent = (ViewGroup)child.getParent();
        if (null != parent) {
            parent.removeView(child);
            parent.addView(child, 0);
        }
    }
}