自定义跟随手指移动view

public class MoveView extends AppCompatButton { int mLastX; int mLastY; public MoveView(Context context) { super(context); } public MoveView(Context context, @Nullable AttributeSet attrs) { super(context, attrs); } @Override public boolean onTouchEvent(MotionEvent event) { //获取手指当前的坐标 int x = (int) event.getRawX(); int y = (int) event.getRawY(); switch (event.getAction()){ case MotionEvent.ACTION_MOVE: //现在手指的坐标 - 上次view的坐标 int deltaX= x - mLastX; int deltaY = y- mLastY; Log.d("shj--","move ,deltax:"+deltaX+" deltay:"+deltaY); //用nineoldandroids实现 int translationx = (int) (ViewHelper.getTranslationX(this)+deltaX); int translationy = (int) (ViewHelper.getTranslationY(this)+deltaY); ViewHelper.setTranslationX(this,translationx); ViewHelper.setTranslationY(this,translationy); break; } mLastY = y; mLastX = x; return true; } }