android: move a view on touch move (ACTION_MOVE)

Question

I\'d like to do a simple control: a container with a view inside. If I touch the container and I move the finger, I want to move the view to follow my finger.

What

Answer 1

Following the @Andrey approach, if you want to move the view from its center, you only have to substract the view's half height and width to the movement.

float dX, dY;

@Override
public boolean onTouchEvent(View view, MotionEvent event) {
    switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN:
            dX = view.getX() - event.getRawX();
            dY = view.getY() - event.getRawY();
            break;
        case MotionEvent.ACTION_MOVE:
            view.animate()
                .x(event.getRawX() + dX - (view.getWidth() / 2))
                .y(event.getRawY() + dY - (view.getHeight() / 2))
                .setDuration(0)
                .start();
            break;
        default:
            return false;
    }
    return true;
}