androidnavigation-drawertoolbardrawertoggle

Android support Toolbar + ActionBarDrawerToggle not changing to arrow


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();
}

Solution

  • 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.