Material design drawer

Question

I'm faced with a little problem.

How to make a drawer already opened when we start the app (like a static menu but with the ability to close it when we press the arrow button)? We've got this menu:

https://github.com/kanytu/android-material-drawer-template

and the sample how it looks like now:

Answer 1

   protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mToolbar = (Toolbar) findViewById(R.id.toolbar_actionbar);
    setSupportActionBar(mToolbar);
    getSupportActionBar().setDisplayShowHomeEnabled(true);



    mNavigationDrawerFragment = (NavigationDrawerFragment) getFragmentManager().findFragmentById(R.id.fragment_drawer);
    mNavigationDrawerFragment.setup(R.id.fragment_drawer, (DrawerLayout) findViewById(R.id.drawer), mToolbar);
}

Answer 2

Ok, since you're using NavigationDrawerFragment , you are probably missing the mUserLearnedDrawer property and the associated behaviour. Basically, the idea is to save a property in SharedPreferences the first time the drawer is open and check that property everytime setup() is called, so you know if you need to open the drawer for the user the first time. Take a look at the code here . I'm copying the setup() method here in case the link goes dead :

public void setUp(int fragmentId, DrawerLayout drawerLayout, NavigationDrawerAdapter adapter, AvatarLoader avatar,
    User user) {
    mFragmentContainerView = getActivity().findViewById(fragmentId);
    mDrawerLayout = drawerLayout;
    mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);

    avatar.bind(userImage, user);
    userName.setText(user.getLogin());

    String name = user.getName();
    if (name != null) {
        userRealName.setText(user.getName());
    } else {
        userRealName.setVisibility(View.GONE);
    }

    mDrawerListView.setAdapter(adapter);
    mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);

    ActionBar actionBar = getActionBar();
    actionBar.setDisplayHomeAsUpEnabled(true);
    actionBar.setHomeButtonEnabled(true);

    mDrawerToggle = new ActionBarDrawerToggle(
        getActivity(), mDrawerLayout,
        R.string.navigation_drawer_open,
        R.string.navigation_drawer_close) {
        @Override
        public void onDrawerClosed(View drawerView) {
            super.onDrawerClosed(drawerView);
            if (!isAdded()) {
                return;
            }

            getActivity().supportInvalidateOptionsMenu();
        }

        @Override
        public void onDrawerOpened(View drawerView) {
            super.onDrawerOpened(drawerView);
            if (!isAdded()) {
                return;
            }

            if (!mUserLearnedDrawer) {
                mUserLearnedDrawer = true;
                SharedPreferences sp = PreferenceManager
                    .getDefaultSharedPreferences(getActivity());
                sp.edit().putBoolean(PREF_USER_LEARNED_DRAWER, true).apply();
            }

            getActivity().supportInvalidateOptionsMenu();
        }
    };

    if (!mUserLearnedDrawer && !mFromSavedInstanceState)
        mDrawerLayout.openDrawer(mFragmentContainerView);

    mDrawerLayout.post(new Runnable() {
        @Override
        public void run() {
            mDrawerToggle.syncState();
        }
    });

    mDrawerLayout.setDrawerListener(mDrawerToggle);

}