Android app initializing with Side Drawer Menu always open

Question

It’s a very simple question, but how can I solve this problem? Every time I start the application it is with that side menu suspended always open.

public class NavigationDrawerFragment extends Fragment {

/**
 * Remember the position of the selected item.
 */
private static final String STATE_SELECTED_POSITION = "selected_navigation_drawer_position";

/**
 * Per the design guidelines, you should show the drawer on launch until the
 * user manually expands it. This shared preference tracks this.
 */
private static final String PREF_USER_LEARNED_DRAWER = "navigation_drawer_learned";

/*
 A pointer to the current callbacks instance (the Activity).
 */
private NavigationDrawerCallbacks mCallbacks;

/**
 * Helper component that ties the action bar to the navigation drawer.
 */
private ActionBarDrawerToggle mDrawerToggle;

private DrawerLayout mDrawerLayout;
private LinearLayout mDrawerLinearLaryout;
private ListView mDrawerListView;
private View mFragmentContainerView;

private int mCurrentSelectedPosition = 0;
private boolean mFromSavedInstanceState;
private boolean mUserLearnedDrawer;

public NavigationDrawerFragment() {
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Read in the flag indicating whether or not the user has demonstrated
    // awareness of the
    // drawer. See PREF_USER_LEARNED_DRAWER for details.
    SharedPreferences sp = PreferenceManager
            .getDefaultSharedPreferences(getActivity());
    mUserLearnedDrawer = sp.getBoolean(PREF_USER_LEARNED_DRAWER, true);

    if (savedInstanceState != null) {
        mCurrentSelectedPosition = savedInstanceState.getInt(STATE_SELECTED_POSITION);
        mFromSavedInstanceState = true;
    }

    // Select either the default item (0) or the last selected item.
    selectItem(mCurrentSelectedPosition);
}

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    // Indicate that this fragment would like to influence the set of
    // actions in the action bar.
    setHasOptionsMenu(true);
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    mDrawerLinearLaryout = (LinearLayout) inflater.inflate(
            R.layout.fragmento_menu_drawer, container, false);

    mDrawerListView = (ListView)mDrawerLinearLaryout.findViewById(R.id.lvListaMenu);

    String[] itens ={   getString(R.string.inicio),
                        getString(R.string.sobre),
                        getString(R.string.opcoes),
                        getString(R.string.fica_tecnica)};

    mDrawerListView.setAdapter(new ArrayAdapter<String>(getActionBar()
            .getThemedContext(), android.R.layout.simple_list_item_1,
            android.R.id.text1, itens));
    mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);

    mDrawerListView.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {
            FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
            if(position==0)
                fragmentManager.beginTransaction().replace(R.id.container,new Fragmento_ListaPragas()).commit();
            if(position==2){
                startActivity(new Intent(getActivity(),ActivityOpcoes.class));
                getActivity().finish();
            }
        }
    });
    return mDrawerLinearLaryout;
}

public boolean isDrawerOpen() {
    return mDrawerLayout != null
            && mDrawerLayout.isDrawerOpen(mFragmentContainerView);
}

/*
 Users of this fragment must call this method to set up the navigation
 drawer interactions.

 @param fragmentId
            The android:id of this fragment in its activity's layout.
 @param drawerLayout
            The DrawerLayout containing this fragment's UI.
 */
public void setUp(int fragmentId, DrawerLayout drawerLayout) {
    mFragmentContainerView = getActivity().findViewById(fragmentId);
    mDrawerLayout = drawerLayout;

    // set a custom shadow that overlays the main content when the drawer
    // opens
    mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow,
            GravityCompat.START);
    // set up the drawer's list view with items and click listener

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

    // ActionBarDrawerToggle ties together the the proper interactions
    // between the navigation drawer and the action bar app icon.
    mDrawerToggle = new ActionBarDrawerToggle(getActivity(), /* host Activity */
    mDrawerLayout, /* DrawerLayout object */
    R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
    R.string.navigation_drawer_open, /*
                                     * "open drawer" description for
                                     * accessibility
                                     */
    R.string.navigation_drawer_close /*
                                     * "close drawer" description for
                                     * accessibility
                                     */
    ) {
        @Override
        public void onDrawerClosed(View drawerView) {
            super.onDrawerClosed(drawerView);
            if (!isAdded()) {
                return;
            }

            getActivity().supportInvalidateOptionsMenu(); // calls
                                                            // onPrepareOptionsMenu()
        }

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

            if (!mUserLearnedDrawer) {
                // The user manually opened the drawer; store this flag to
                // prevent auto-showing
                // the navigation drawer automatically in the future.
                mUserLearnedDrawer = true;
                SharedPreferences sp = PreferenceManager
                        .getDefaultSharedPreferences(getActivity());
                sp.edit().putBoolean(PREF_USER_LEARNED_DRAWER, true)
                        .commit();
            }

            getActivity().supportInvalidateOptionsMenu(); // calls
                                                            // onPrepareOptionsMenu()
        }
    };

    // If the user hasn't 'learned' about the drawer, open it to introduce
    // them to the drawer,
    // per the navigation drawer design guidelines.
    if (!mUserLearnedDrawer && !mFromSavedInstanceState) {
        mDrawerLayout.openDrawer(mFragmentContainerView);
    }

    // Defer code dependent on restoration of previous instance state.
    mDrawerLayout.post(new Runnable() {
        @Override
        public void run() {
            mDrawerToggle.syncState();
        }
    });

    mDrawerLayout.setDrawerListener(mDrawerToggle);
}

private void selectItem(int position) {
    mCurrentSelectedPosition = position;
    if (mDrawerListView!= null) {
        mDrawerListView.setItemChecked(position, true);
    }
    if (mDrawerLayout != null) {
        mDrawerLayout.closeDrawer(mFragmentContainerView);
    }
    if (mCallbacks != null) {
        mCallbacks.onNavigationDrawerItemSelected(position);
    }
}

@Override
public void onAttach(Activity activity) {
    super.onAttach(activity);
    try {
        mCallbacks = (NavigationDrawerCallbacks) activity;
    } catch (ClassCastException e) {
        throw new ClassCastException(
                "Activity must implement NavigationDrawerCallbacks.");
    }
}

@Override
public void onDetach() {
    super.onDetach();
    mCallbacks = null;
}

@Override
public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    outState.putInt(STATE_SELECTED_POSITION, mCurrentSelectedPosition);
}

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    // Forward the new configuration the drawer toggle component.
    mDrawerToggle.onConfigurationChanged(newConfig);
}

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    // If the drawer is open, show the global app actions in the action bar.
    // See also
    // showGlobalContextActionBar, which controls the top-left area of the
    // action bar.
    if (mDrawerLayout != null && isDrawerOpen()) {
        inflater.inflate(R.menu.global, menu);
        showGlobalContextActionBar();
    }
    super.onCreateOptionsMenu(menu, inflater);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    if (mDrawerToggle.onOptionsItemSelected(item)) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

/*
 Per the navigation drawer design guidelines, updates the action bar to
 show the global app 'context', rather than just what's in the current
 screen.
 */
private void showGlobalContextActionBar() {
    ActionBar actionBar = getActionBar();
    actionBar.setDisplayShowTitleEnabled(true);
    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
    actionBar.setTitle(R.string.app_name);
}

private ActionBar getActionBar() {
    return ((ActionBarActivity) getActivity()).getSupportActionBar();
}

/**
 * Callbacks interface that all activities using this fragment must
 * implement.
 */
public static interface NavigationDrawerCallbacks {
    /**
     * Called when an item in the navigation drawer is selected.
     */
    void onNavigationDrawerItemSelected(int position);
}
}

Answer 1

Switch to FALSE in this section

ORIGINAL:

mUserLearnedDrawer = sp.getBoolean(PREF_USER_LEARNED_DRAWER, true);

WITH THE CHANGE:

mUserLearnedDrawer = sp.getBoolean(PREF_USER_LEARNED_DRAWER, false);

This is because in the section below it only marks the variable in Sharedpreference if it is false, but the default up there is true. That is, if this variable does not exist in Sharedpreference, the default will be true, but below, in the Drawer open event it only enters to mark as true, that is, the user has already learned about it, if the variable is false, but how it will be false if the default on startup is true?!

So exchange the default true for false.

              if (!mUserLearnedDrawer) {  // o default lá em cima é true, como vai entrar aqui?
                // The user manually opened the drawer; store this flag to
                // prevent auto-showing
                // the navigation drawer automatically in the future.
                mUserLearnedDrawer = true;
                SharedPreferences sp = PreferenceManager
                        .getDefaultSharedPreferences(getActivity());
                sp.edit().putBoolean(PREF_USER_LEARNED_DRAWER, true)
                        .commit();
            }