Android : Show detail on hover or click on bar of Graph View Android

Trying to show value of label on hover of bar in Graph View. There is a method called

setOnHoverListener(new View.OnHoverListener() {
    @Override
    public boolean onHover(View v, MotionEvent event) {
        switch (event.getAction()) {
            case MotionEvent.ACTION_HOVER_ENTER:

                break;
            case MotionEvent.ACTION_HOVER_MOVE:

                break;
            case MotionEvent.ACTION_HOVER_EXIT:

                break;
        }
        return false;
    }
});

But the method works on graph view . I need to implemnet on each bar of Graph represented by distinguish labels and values. I have 1000 of bars in graph whose data is fetched from server.Implementing graph view in android o.s. using GraphView-3.1.3.jar . Also implemented achartengine library but not found any solution to this .