ToolbarUtils.java

import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.TextView;


public class ToolbarUtils {

    public static void setToolbar(AppCompatActivity activity, Toolbar toolbar, String title) {
        if (activity.getSupportActionBar() == null) {
            return;
        }
        TextView tvTitle = (TextView) toolbar.findViewById(R.id.tvTitle);
        tvTitle.setText(title);
    }

    public static void setToolbar(AppCompatActivity activity, Toolbar toolbar, DrawerLayout drawer, String title) {
        if (activity.getSupportActionBar() == null) {
            return;
        }
        toolbar.setNavigationIcon(R.drawable.ic_menu_white);
        toolbar.setTag("Outer");

        TextView tvTitle = (TextView) toolbar.findViewById(R.id.tvTitle);
        tvTitle.setText(title);

        drawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNDEFINED);
    }

    public static void setInnerToolbar(final AppCompatActivity activity, final Toolbar toolbar, final DrawerLayout drawer, String title) {
        if (activity.getSupportActionBar() == null) {
            return;
        }
        toolbar.setNavigationIcon(R.drawable.ic_back_white);
        toolbar.setTag("Inner");

        TextView tvTitle = (TextView) toolbar.findViewById(R.id.tvTitle);
        tvTitle.setText(title);

        drawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
        toolbar.setNavigationOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {

                if (toolbar.getTag().equals("Inner")) {
                    activity.onBackPressed();
                } else {
                    drawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNDEFINED);
                    drawer.openDrawer(GravityCompat.START);
                    toolbar.setNavigationIcon(R.drawable.ic_menu_white);
                }
            }
        });
    }

}