Example usage for android.app ActionBar setDisplayHomeAsUpEnabled

Introduction

In this page you can find the example usage for android.app ActionBar setDisplayHomeAsUpEnabled.

Prototype

public abstract void setDisplayHomeAsUpEnabled(boolean showHomeAsUp);

Source Link

Document

Set whether home should be displayed as an "up" affordance.

Usage

From source file:com.codebutler.farebot.activity.CardInfoActivity.java

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

    setContentView(R.layout.activity_card_info);
    final ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
    mTabsAdapter = new TabPagerAdapter(this, viewPager);

    final ActionBar actionBar = getActionBar();
    actionBar.setDisplayHomeAsUpEnabled(true);
    actionBar.setTitle(R.string.loading);

    new AsyncTask<Void, Void, Void>() {
        private Exception mException;
        public boolean mSpeakBalanceEnabled;

        @Override/*from ww  w  . j  a  v a2s.  c om*/
        protected Void doInBackground(Void... voids) {
            try {
                Uri uri = getIntent().getData();
                Cursor cursor = getContentResolver().query(uri, null, null, null, null);
                startManagingCursor(cursor);
                cursor.moveToFirst();

                String data = cursor.getString(cursor.getColumnIndex(CardsTableColumns.DATA));

                mCard = Card.fromXml(FareBotApplication.getInstance().getSerializer(), data);
                mTransitData = mCard.parseTransitData();

                SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(CardInfoActivity.this);
                mSpeakBalanceEnabled = prefs.getBoolean("pref_key_speak_balance", false);
            } catch (Exception ex) {
                mException = ex;
            }
            return null;
        }

        @Override
        protected void onPostExecute(Void aVoid) {
            findViewById(R.id.loading).setVisibility(View.GONE);
            findViewById(R.id.pager).setVisibility(View.VISIBLE);

            if (mException != null) {
                if (mCard == null) {
                    Utils.showErrorAndFinish(CardInfoActivity.this, mException);
                } else {
                    Log.e("CardInfoActivity", "Error parsing transit data", mException);
                    showAdvancedInfo(mException);
                    finish();
                }
                return;
            }

            if (mTransitData == null) {
                showAdvancedInfo(new UnsupportedCardException());
                finish();
                return;
            }

            String titleSerial = (mTransitData.getSerialNumber() != null) ? mTransitData.getSerialNumber()
                    : Utils.getHexString(mCard.getTagId(), "");
            actionBar.setTitle(mTransitData.getCardName() + " " + titleSerial);

            Bundle args = new Bundle();
            args.putString(AdvancedCardInfoActivity.EXTRA_CARD,
                    mCard.toXml(FareBotApplication.getInstance().getSerializer()));
            args.putParcelable(EXTRA_TRANSIT_DATA, mTransitData);

            if (mTransitData instanceof UnauthorizedClassicTransitData) {
                mTabsAdapter.addTab(actionBar.newTab(), UnauthorizedCardFragment.class, args);
                return;
            }

            if (mTransitData.getBalanceString() != null) {
                mTabsAdapter.addTab(actionBar.newTab().setText(R.string.balance), CardBalanceFragment.class,
                        args);
            }

            if (mTransitData.getTrips() != null || mTransitData.getRefills() != null) {
                mTabsAdapter.addTab(actionBar.newTab().setText(R.string.history), CardTripsFragment.class,
                        args);
            }

            if (mTransitData.getSubscriptions() != null) {
                mTabsAdapter.addTab(actionBar.newTab().setText(R.string.subscriptions),
                        CardSubscriptionsFragment.class, args);
            }

            if (mTransitData.getInfo() != null) {
                mTabsAdapter.addTab(actionBar.newTab().setText(R.string.info), CardInfoFragment.class, args);
            }

            if (mTabsAdapter.getCount() > 1) {
                actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
            }

            if (mTransitData.hasUnknownStations()) {
                findViewById(R.id.need_stations).setVisibility(View.VISIBLE);
            }

            boolean speakBalanceRequested = getIntent().getBooleanExtra(SPEAK_BALANCE_EXTRA, false);
            if (mSpeakBalanceEnabled && speakBalanceRequested) {
                mTTS = new TextToSpeech(CardInfoActivity.this, mTTSInitListener);
            }

            if (savedInstanceState != null) {
                viewPager.setCurrentItem(savedInstanceState.getInt(KEY_SELECTED_TAB, 0));
            }
        }
    }.execute();
}

---

From source file:com.android.fastinfusion.ui.fragment.NavigationDrawerFragment.java

/**
 * 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.
 *//*from   w ww . j  av  a  2  s  .co  m*/
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, Gravity.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().invalidateOptionsMenu(); // 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).apply();
            }

            getActivity().invalidateOptionsMenu(); // 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);
}

---

From source file:com.dhl.android.bitmapfun.ui.ImageDetailActivity.java

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.image_detail_pager);

    // Fetch screen height and width, to use as our max size when loading images as this
    // activity runs full screen
    final DisplayMetrics displaymetrics = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
    final int height = displaymetrics.heightPixels;
    final int width = displaymetrics.widthPixels;
    final int longest = height > width ? height : width;

    // The ImageWorker takes care of loading images into our ImageView children asynchronously
    mImageWorker = new ImageFetcher(this, longest);
    mImageWorker.setAdapter(Images.imageWorkerUrlsAdapter);
    mImageWorker.setImageCache(ImageCache.findOrCreateCache(this, IMAGE_CACHE_DIR));
    mImageWorker.setImageFadeIn(false);/*from  w  w  w.  jav  a  2s .c om*/

    // Set up ViewPager and backing adapter
    mAdapter = new ImagePagerAdapter(getSupportFragmentManager(), mImageWorker.getAdapter().getSize());
    mPager = (ViewPager) findViewById(R.id.pager);
    mPager.setAdapter(mAdapter);
    mPager.setPageMargin((int) getResources().getDimension(R.dimen.image_detail_pager_margin));

    // Set up activity to go full screen
    getWindow().addFlags(LayoutParams.FLAG_FULLSCREEN);

    // Enable some additional newer visibility and ActionBar features to create a more immersive
    // photo viewing experience
    if (Utils.hasActionBar()) {
        final ActionBar actionBar = getActionBar();

        // Enable "up" navigation on ActionBar icon and hide title text
        actionBar.setDisplayHomeAsUpEnabled(true);
        actionBar.setDisplayShowTitleEnabled(false);

        // Start low profile mode and hide ActionBar
        mPager.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
        actionBar.hide();

        // Hide and show the ActionBar as the visibility changes
        mPager.setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() {
            @Override
            public void onSystemUiVisibilityChange(int vis) {
                if ((vis & View.SYSTEM_UI_FLAG_LOW_PROFILE) != 0) {
                    actionBar.hide();
                } else {
                    actionBar.show();
                }
            }
        });
    }

    // Set the current item based on the extra passed in to this activity
    final int extraCurrentItem = getIntent().getIntExtra(EXTRA_IMAGE, -1);
    if (extraCurrentItem != -1) {
        mPager.setCurrentItem(extraCurrentItem);
    }
}

---

From source file:app.philm.in.BasePhilmActivity.java

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

    Crashlytics.start(this);

    // Request Progress Bar in Action Bar
    requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);

    setContentView(getContentViewLayoutId());

    mCardContainer = findViewById(R.id.card_container);

    mInsetFrameLayout = (InsetFrameLayout) findViewById(R.id.fl_insets);
    if (mInsetFrameLayout != null) {
        mInsetFrameLayout.setOnInsetsCallback(this);
    }/*from  w w w.  j a v a2s  .c  om*/

    mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
    if (mDrawerLayout != null) {
        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.drawable.ic_drawer,
                R.string.drawer_open_content_desc, R.string.drawer_closed_content_desc);
        mDrawerLayout.setDrawerListener(mDrawerToggle);

        final ActionBar ab = getActionBar();
        if (ab != null) {
            ab.setDisplayHomeAsUpEnabled(true);
            ab.setHomeButtonEnabled(true);
        }
    }

    // Let SuperCardToast restore itself
    SuperCardToast.onRestoreState(savedInstanceState, this);

    mMainController = PhilmApplication.from(this).getMainController();

    mDisplay = new AndroidDisplay(this, mDrawerToggle, mDrawerLayout, mInsetFrameLayout);

    handleIntent(getIntent(), getDisplay());
}

---

From source file:co.touchlab.thumbcache.ui.ImageDetailActivity.java

@SuppressLint("NewApi")
@Override/*from   www . ja v a2s  .  c  o m*/
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.image_detail_pager);

    // Fetch screen height and width, to use as our max size when loading images as this
    // activity runs full screen
    final DisplayMetrics displaymetrics = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
    final int height = displaymetrics.heightPixels;
    final int width = displaymetrics.widthPixels;
    final int longest = height > width ? height : width;

    // The ImageWorker takes care of loading images into our ImageView children asynchronously
    mImageWorker = new ImageFetcher(this, longest);
    mImageWorker.setAdapter(Images.imageWorkerUrlsAdapter);
    mImageWorker.setImageCache(ImageCache.findOrCreateCache(this, IMAGE_CACHE_DIR));
    mImageWorker.setImageFadeIn(false);

    // Set up ViewPager and backing adapter
    mAdapter = new ImagePagerAdapter(getSupportFragmentManager(), mImageWorker.getAdapter().getSize());
    mPager = (ViewPager) findViewById(R.id.pager);
    mPager.setAdapter(mAdapter);
    mPager.setPageMargin((int) getResources().getDimension(R.dimen.image_detail_pager_margin));

    // Set up activity to go full screen
    getWindow().addFlags(LayoutParams.FLAG_FULLSCREEN);

    // Enable some additional newer visibility and ActionBar features to create a more immersive
    // photo viewing experience
    if (Utils.hasActionBar()) {
        final ActionBar actionBar = getActionBar();

        // Enable "up" navigation on ActionBar icon and hide title text
        actionBar.setDisplayHomeAsUpEnabled(true);
        actionBar.setDisplayShowTitleEnabled(false);

        // Start low profile mode and hide ActionBar
        mPager.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
        actionBar.hide();

        // Hide and show the ActionBar as the visibility changes
        mPager.setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() {
            @Override
            public void onSystemUiVisibilityChange(int vis) {
                if ((vis & View.SYSTEM_UI_FLAG_LOW_PROFILE) != 0) {
                    actionBar.hide();
                } else {
                    actionBar.show();
                }
            }
        });
    }

    // Set the current item based on the extra passed in to this activity
    final int extraCurrentItem = getIntent().getIntExtra(EXTRA_IMAGE, -1);
    if (extraCurrentItem != -1) {
        mPager.setCurrentItem(extraCurrentItem);
    }
}

---

From source file:com.mbpro.tweebook.facebook.images.FacebookImageDetailActivity.java

@SuppressLint("NewApi")
@Override//from  w ww .  jav  a2  s  .  c  o  m
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.facebook_album_image_detail_pager);

    // Fetch screen height and width, to use as our max size when loading images as this
    // activity runs full screen
    final DisplayMetrics displaymetrics = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
    final int height = displaymetrics.heightPixels;
    final int width = displaymetrics.widthPixels;
    final int longest = height > width ? height : width;

    // The ImageWorker takes care of loading images into our ImageView children asynchronously
    mImageWorker = new ImageFetcher(this, longest);
    mImageWorker.setAdapter(FaceBookAlbumImages.imageWorkerUrlsAdapter);
    mImageWorker.setImageCache(ImageCache.findOrCreateCache(this, IMAGE_CACHE_DIR));
    mImageWorker.setImageFadeIn(false);

    // Set up ViewPager and backing adapter
    mAdapter = new ImagePagerAdapter(getSupportFragmentManager(), mImageWorker.getAdapter().getSize());
    mPager = (ViewPager) findViewById(R.id.pager);
    mPager.setAdapter(mAdapter);
    mPager.setPageMargin((int) getResources().getDimension(R.dimen.image_detail_pager_margin));

    // Set up activity to go full screen
    getWindow().addFlags(LayoutParams.FLAG_FULLSCREEN);

    // Enable some additional newer visibility and ActionBar features to create a more immersive
    // photo viewing experience
    if (Utils.hasActionBar()) {
        final ActionBar actionBar = getActionBar();

        // Enable "up" navigation on ActionBar icon and hide title text
        actionBar.setDisplayHomeAsUpEnabled(true);
        actionBar.setDisplayShowTitleEnabled(false);

        // Start low profile mode and hide ActionBar
        mPager.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
        actionBar.hide();

        // Hide and show the ActionBar as the visibility changes
        mPager.setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() {
            @Override
            public void onSystemUiVisibilityChange(int vis) {
                if ((vis & View.SYSTEM_UI_FLAG_LOW_PROFILE) != 0) {
                    actionBar.hide();
                } else {
                    actionBar.show();
                }
            }
        });
    }

    // Set the current item based on the extra passed in to this activity
    final int extraCurrentItem = getIntent().getIntExtra(EXTRA_IMAGE, -1);
    if (extraCurrentItem != -1) {
        mPager.setCurrentItem(extraCurrentItem);
    }
}

---

From source file:com.google.cloud.genomics.android.fragments.NavigationDrawerFragment.java

/**
 * 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.
 *///from   w  w w . j  av a2 s.co  m
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.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().invalidateOptionsMenu(); // 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).apply();
            }

            getActivity().invalidateOptionsMenu(); // 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);
}

---

From source file:org.site_monitor.activity.PrefSettingsActivity.java

/**
 * Set up the {@link android.app.ActionBar}
 *///from  w  w  w  .  j a v a 2 s.c  om
private void setupActionBar() {
    // Show the Up button in the action bar.
    ActionBar actionBar = getActionBar();
    if (actionBar != null) {
        actionBar.setDisplayHomeAsUpEnabled(true);
    }
}

---

From source file:com.geotrackin.gpslogger.NavigationDrawerFragment.java

/**
 * 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.
 *//*from   w w w  .  ja v  a2s.  c  om*/
public void setUp(int fragmentId, DrawerLayout drawerLayout) {
    fragmentContainerView = getActivity().findViewById(fragmentId);
    this.drawerLayout = drawerLayout;

    // set a custom shadow that overlays the main content when the drawer opens
    this.drawerLayout.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.
    actionBarDrawerToggle = new ActionBarDrawerToggle(getActivity(), /* host Activity */
            NavigationDrawerFragment.this.drawerLayout, /* 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().invalidateOptionsMenu(); // calls onPrepareOptionsMenu()
        }

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

            getActivity().invalidateOptionsMenu(); // 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 (!userHasSeenDrawer && !fromSavedInstanceState) {
        this.drawerLayout.openDrawer(fragmentContainerView);
        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity());
        sp.edit().putBoolean(PREF_USER_SEEN_DRAWER, true).apply();
    }

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

    this.drawerLayout.setDrawerListener(actionBarDrawerToggle);
}

---

From source file:de.anderdonau.spacetrader.NavigationDrawerFragment.java

/**
 * 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.
 *///ww w.j a v a 2s.  c o m
public void setUp(int fragmentId, DrawerLayout drawerLayout) {
    //noinspection ConstantConditions
    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().invalidateOptionsMenu(); // 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).apply();
            }

            getActivity().invalidateOptionsMenu(); // 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.

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

    mDrawerLayout.setDrawerListener(mDrawerToggle);
}

---

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