Navigation Drawer Animation, drawerOpen is called twice

Question

I am trying to run an animation on navigation drawer open on one of my views, following is my code:

public void onDrawerOpened(View drawerView) {
                getActionBar().setTitle(mDrawerTitle);
                System.out.println("Called");

                ObjectAnimator animation = ObjectAnimator.ofInt(pw, "progress", 200); 
                animation.setDuration(1000);
                animation.setInterpolator(new DecelerateInterpolator());
                animation.start();
                //      mDrawerList.setLayoutAnimation(getMaximAnim());

                invalidateOptionsMenu();
            }
        };

The console prints Called twice whenever I open the drawer, which means the animation will happen twice and it jitters this way. I want to animate the view only once, Where am I going wrong, any hints?

This is my drawerSlide code:

public void onDrawerSlide(View drawerView, float slideOffset) {
            if(slideOffset > .55 && !drawerOpen){
                onDrawerOpened(drawerView);
                drawerOpen = true;
            } else if(slideOffset < .45 && drawerOpen) {
                onDrawerClosed(drawerView);
                drawerOpen = false;
            }
        } 

I have taken reference from here

Answer 1

You don't need

onDrawerOpened(drawerView);

in your onDrawerSlide. It's called by Android itself. As for changing titles, look at this:

public void restoreActionBar(){
ActionBar actionBar = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setDisplayShowTitleEnabled(true);
actionBar.setTitle(mTitle);
}

and set mTitle to any String you like in another part of code.