@Override
public boolean onTouch(View v, MotionEvent event) {
    switch (event.getAction()){
        case MotionEvent.ACTION_DOWN:{
            break;
        }
        case MotionEvent.ACTION_MOVE:{
            drawPanel.setPaths(new PointF(event.getX(),event.getY()));
            drawPanel.invalidate();
            break;
        }
        case MotionEvent.ACTION_UP:{
            break;
        }
    }
    return true;
}

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);Z
    if(point != null) {
        for (PointF pointF : points)
            canvas.drawBitmap(shape, pointF.x, pointF.y, paint);
    }
}