Android support Toolbar + ActionBarDrawerToggle not changing to arrow

Question

I'm struggling with the toolbar and drawer. I'm trying to make the burger switch to arrow when I'm adding a new fragment to the backstack but there is no way to do it.

Maybe I'm missing something but I could not find a way. Anyone had the same problem?

This is the declaration:

mDrawerToggle = new ActionBarDrawerToggle(             getActivityCompat(),                    /* host Activity */             mDrawerLayout,                    /* DrawerLayout object */             ((BaseActivity) getActivityCompat()).getToolbar(),             R.string.navigation_drawer_open,  /* "open drawer" description for accessibility */             R.string.navigation_drawer_close  /* "close drawer" description for accessibility */     ) 

This is the function I call when a fragment is added to the back stack

public void setToggleState(boolean isEnabled) {     if (mDrawerLayout == null)         return;      if (isEnabled) {         mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED);         mDrawerToggle.onDrawerStateChanged(DrawerLayout.LOCK_MODE_UNLOCKED);     } else {         mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);         mDrawerToggle.onDrawerStateChanged(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);     }     mDrawerToggle.syncState(); } 

Answer 1

I think all you have to do is to delete the third argument. Thus:

mDrawerToggle = new ActionBarDrawerToggle(      getActivityCompat(),              /* host Activity */      mDrawerLayout,                    /* DrawerLayout object */      // ((BaseActivity) getActivityCompat()).getToolbar(), <== delete this argument      R.string.navigation_drawer_open,  /* "open drawer" description for accessibility */      R.string.navigation_drawer_close  /* "close drawer" description for accessibility */     ); 

May it helps.