ActionBarDrawerToggle does not open drawer until first slide

Question

I am using Google Design Support Library and DrawerLayout.

Setup:

final DrawerLayout drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
NavigationView drawer = (NavigationView) findViewById(R.id.drawer);
if(mDrawerToggle == null) {
    mDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, mToolbar, R.string.open, R.string.feather_close);
    drawerLayout.addDrawerListener(mDrawerToggle);
    mDrawerToggle.syncState();
}

When I start my app, the ripple effect of the hamburger icon is shown but the drawer is not opened. When I open the drawer at least one time by sliding from the left, the hamburger icon works for the entire runtime. I don't have a special listener on the toggle button or the drawer itself and the onOptionsItemSelected method is not called.

Please help me to find out what happens.

Thank you.

Answer 1

I found it: I accidentally had android:visibility="gone" in my NavigationView. What a freaky side effect.