Java Code Examples for androidx.drawerlayout.widget.DrawerLayout#addDrawerListener()

@Override
public final void perform(UiController uiController, View view) {
  DrawerLayout drawer = (DrawerLayout) view;

  if (!checkAction().matches(drawer)) {
    return;
  }

  Object tag = drawer.getTag(TAG);
  IdlingDrawerListener idlingListener;
  if (tag instanceof IdlingDrawerListener) {
    idlingListener = (IdlingDrawerListener) tag;
  } else {
    idlingListener = new IdlingDrawerListener();
    drawer.setTag(TAG, idlingListener);
    drawer.addDrawerListener(idlingListener);
    IdlingRegistry.getInstance().register(idlingListener);
  }

  performAction(uiController, drawer);
  uiController.loopMainThreadUntilIdle();

  IdlingRegistry.getInstance().unregister(idlingListener);
  drawer.removeDrawerListener(idlingListener);
  drawer.setTag(TAG, null);
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    PrefStore.setLocale(this);
    setContentView(R.layout.activity_main);

    ActionBar actionBar = getSupportActionBar();
    if (actionBar != null) {
        actionBar.setDisplayHomeAsUpEnabled(true);
    }

    DrawerLayout drawer = findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.addDrawerListener(toggle);
    toggle.syncState();

    NavigationView navigationView = findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);

    output = findViewById(R.id.outputView);
    scroll = findViewById(R.id.scrollView);

    // enable context clickable
    output.setMovementMethod(LinkMovementMethod.getInstance());
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    ButterKnife.bind(this);

    DrawerLayout drawer = findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.addDrawerListener(toggle);
    toggle.syncState();

    NavigationView navigationView = findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);
}
 

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

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    if(getSupportActionBar() == null) {
        setSupportActionBar(toolbar);
    }

    mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, mDrawerLayout, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    mDrawerLayout.addDrawerListener(toggle);
    toggle.syncState();

    mNavigationView = (NavigationView) findViewById(R.id.nav_view);
    mNavigationView.setNavigationItemSelectedListener(this);

    selectNavigationItem(getNavigationDrawerID());

    View mainContent = findViewById(R.id.main_content);
    if (mainContent != null) {
        mainContent.setAlpha(0);
        mainContent.animate().alpha(1).setDuration(MAIN_CONTENT_FADEIN_DURATION);
    }
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    fragmentManager = getSupportFragmentManager();

    DrawerLayout drawer = findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
        this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.addDrawerListener(toggle);
    toggle.syncState();

    NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);

    //add the first one as the default fragment.
    fragmentManager.beginTransaction().replace(R.id.container, new SupportDialogFragment()).commit();
}
 

@SuppressWarnings("deprecation")
public static void setDrawerListener(DrawerLayout mDrawerLayout, ActionBarDrawerToggle mDrawerToggle)
{

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
    {
        mDrawerLayout.removeDrawerListener(mDrawerToggle);
        mDrawerLayout.addDrawerListener(mDrawerToggle);
    }
    else
    {
        mDrawerLayout.setDrawerListener(mDrawerToggle);
    }
}
 

DrawerNavigation(@NonNull MainActivity mainActivity, @NonNull Toolbar toolbar) {
    DrawerLayout drawer = mainActivity.findViewById(R.id.drawer_layout);
    drawerToggle = create(
        mainActivity,
        toolbar,
        drawer,
        R.string.navigation_drawer_open,
        R.string.navigation_drawer_close);
    drawer.addDrawerListener(drawerToggle);
    syncState();
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    super.setContentView(R.layout.activity_drawer);
    mDrawer = findViewById(R.id.drawer);
    mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
    mDrawerAccount = (TextView) findViewById(R.id.drawer_account);
    mDrawerLogout = findViewById(R.id.drawer_logout);
    mDrawerUser = findViewById(R.id.drawer_user);
    mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.string.open_drawer,
            R.string.close_drawer) {
        @Override
        public void onDrawerClosed(View drawerView) {
            super.onDrawerClosed(drawerView);
            if (drawerView.equals(mDrawer) && mPendingNavigation != null) {
                final Intent intent = new Intent(DrawerActivity.this, mPendingNavigation);
                if (mPendingNavigationExtras != null) {
                    intent.putExtras(mPendingNavigationExtras);
                    mPendingNavigationExtras = null;
                }
                // TODO M bug https://code.google.com/p/android/issues/detail?id=193822
                intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
                startActivity(intent);
                mPendingNavigation = null;
            }
        }
    };
    mDrawerLayout.addDrawerListener(mDrawerToggle);
    PreferenceManager.getDefaultSharedPreferences(this)
            .registerOnSharedPreferenceChangeListener(mLoginListener);
    setUpDrawer();
    setUsername();
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    CustomViewPager viewPager = findViewById(R.id.mainViewPager);
    setupViewPager(viewPager);

    TabLayout tabLayout = findViewById(R.id.tabs);
    tabLayout.setupWithViewPager(viewPager);

    final FloatingSearchView mSearchView = findViewById(R.id.search_view);

    mSearchView.setOnQueryChangeListener(new FloatingSearchView.OnQueryChangeListener() {
        @Override
        public void onSearchTextChanged(String oldQuery, final String newQuery) {

        }
    });

    final DrawerLayout drawer = findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer,
            null,
            R.string.navigation_drawer_open,
            R.string.navigation_drawer_close);
    drawer.addDrawerListener(toggle);
    toggle.syncState();

    NavigationView navigationView = findViewById(R.id.nav_view);
    navigationView.setItemIconTintList(null);

    de.hdodenhof.circleimageview.CircleImageView profileImageView = navigationView.getHeaderView(0).findViewById(R.id.profile_image);
    Glide.with(this)
            .load(R.drawable.profile_image)
            .into(profileImageView);

    mSearchView.attachNavigationDrawerToMenuButton(drawer);
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    if (Daedalus.isDarkTheme()) {
        setTheme(R.style.AppTheme_Dark_NoActionBar_TransparentStatusBar);
    }
    super.onCreate(savedInstanceState);

    instance = this;

    setContentView(R.layout.activity_main);
    Toolbar toolbar = findViewById(R.id.toolbar);
    //setSupportActionBar(toolbar); //causes toolbar issues

    DrawerLayout drawer = findViewById(R.id.main_drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.addDrawerListener(toggle);
    toggle.syncState();

    NavigationView navigationView = findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);

    ((TextView) navigationView.getHeaderView(0).findViewById(R.id.textView_nav_version)).setText(getString(R.string.nav_version) + " " + BuildConfig.VERSION_NAME);
    ((TextView) navigationView.getHeaderView(0).findViewById(R.id.textView_nav_git_commit)).setText(getString(R.string.nav_git_commit) + " " + BuildConfig.GIT_COMMIT);

    updateUserInterface(getIntent());
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main_ui);

    context = getApplicationContext();

    MobileAds.initialize(this);

    mAdView = findViewById(R.id.adView);
    mAdView.loadAd(new AdRequest.Builder().build());

    Toolbar toolbar = findViewById(R.id.toolbar);

    setSupportActionBar(toolbar);

    DrawerLayout drawer = findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.addDrawerListener(toggle);
    toggle.syncState();

    navigationView = findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);

    mAdView.setAdListener(new AdListener() {
        @Override
        public void onAdClosed() {
            mAdView.loadAd(new AdRequest.Builder().build());
        }
    });

    if(savedInstanceState == null){
        MenuItem selected = navigationView.getMenu().findItem(R.id.method1);
        selected.setCheckable(true);
        selected.setChecked(true);
        newFragment(0);
    }
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    DrawerLayout drawer = findViewById(R.id.drawer_layout);
    NavigationView navigationView = findViewById(R.id.nav_view);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.addDrawerListener(toggle);
    toggle.syncState();
    navigationView.setNavigationItemSelectedListener(this);

    // Set Default Fragment
    getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, new HomeFragment()).commit();

    // Get an instance of ContactViewModel
    contactViewModel = new ViewModelProvider(this).get(ContactViewModel.class);

    // Reference to Adapter
    final ContactAdapter adapter = new ContactAdapter();

    Toast.makeText(this, "Welcome " + AWSMobileClient.getInstance().getUsername() + "!", Toast.LENGTH_LONG).show();

    //Allowing Strict mode policy for Nougat support
    StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
    StrictMode.setVmPolicy(builder.build());
}
 

@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    final Toolbar toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    FloatingActionButton fab = findViewById(R.id.fab);
    fab.setOnClickListener(view -> {
        if (mFabPrompt != null)
        {
            mFabPrompt.finish();
            mFabPrompt = null;
        }
        Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                .setAction("Action", null).show();
    });

    DrawerLayout drawer = findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.addDrawerListener(toggle);
    toggle.syncState();

    NavigationView navigationView = findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);
}
 

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

    PreferenceManager.setDefaultValues(this, R.xml.preferences, false);

    setContentView(R.layout.activity_main);
    Toolbar toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    DrawerLayout drawer = findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.addDrawerListener(toggle);
    toggle.syncState();

    NavigationView navigationView = findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);

    if (savedInstanceState == null){
        navigationView.setCheckedItem(R.id.nav_outline);
        Fragment fragment = new OutlineFragment();
        getSupportFragmentManager().beginTransaction()
                .replace(R.id.content_main, fragment, FRAGMENT_OUTLINE)
                .commit();
    }

    Info.INSTANCE.welcome(this);
    Version.INSTANCE.dataVersionChange(this);
    Version.INSTANCE.nearFutureChange(this);
}
 

private void initView() {
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    drawer.openDrawer(GravityCompat.START);
    drawer.clearAnimation();
    drawer.setAnimation(null);
    drawer.setLayoutAnimation(null);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.addDrawerListener(toggle);
    toggle.syncState();
    NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);
    navigationView.clearAnimation();
    navigationView.setAnimation(null);
    navigationView.setLayoutAnimation(null);

    bitmapView = findViewById(R.id.iv_image);
    bitmapView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            bitmapView.setVisibility(View.GONE);
        }
    });

    rvImage = (RecyclerView) findViewById(R.id.rv_image);
    LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);
    adapter = new MainAdapter(this, selectedPhotoList);
    rvImage.setLayoutManager(linearLayoutManager);
    rvImage.setAdapter(adapter);
    SnapHelper snapHelper = new PagerSnapHelper();
    snapHelper.attachToRecyclerView(rvImage);
}
 

private void initDrawerLayout(View rootView, Toolbar toolbar) {
    DrawerLayout drawerLayout = rootView.findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle drawerToggle = new ActionBarDrawerToggle(getActivity(), drawerLayout, toolbar, R.string.app_name, R.string.app_name);
    drawerLayout.addDrawerListener(drawerToggle);
    drawerToggle.syncState();
}
 

@Override
protected void onCreate(final Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_features);

       final Toolbar toolbar = findViewById(R.id.toolbar_actionbar);
       setSupportActionBar(toolbar);

	// ensure that Bluetooth exists
	if (!ensureBLEExists())
		finish();

	final DrawerLayout drawer = drawerLayout = findViewById(R.id.drawer_layout);
	drawer.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);

	// Set the drawer toggle as the DrawerListener
	drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.drawer_open, R.string.drawer_close) {
           @Override
           public void onDrawerSlide(final View drawerView, final float slideOffset) {
               // Disable the Hamburger icon animation
               super.onDrawerSlide(drawerView, 0);
           }
       };
	drawer.addDrawerListener(drawerToggle);

	// setup plug-ins in the drawer
	setupPluginsInDrawer(drawer.findViewById(R.id.plugin_container));

	// configure the app grid
	final GridView grid = findViewById(R.id.grid);
	grid.setAdapter(new AppAdapter(this));
	grid.setEmptyView(findViewById(android.R.id.empty));

	getSupportActionBar().setDisplayHomeAsUpEnabled(true);

	final Intent intent = getIntent();
	if (intent.hasExtra(EXTRA_APP) && intent.hasExtra(EXTRA_ADDRESS)) {
		final String app = intent.getStringExtra(EXTRA_APP);
		switch (app) {
			case "HRM":
				final Intent newIntent = new Intent(this, HRActivity.class);
				newIntent.putExtra(EXTRA_ADDRESS, intent.getByteArrayExtra(EXTRA_ADDRESS));
				newIntent.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
				startActivity(newIntent);
				break;
			default:
				// other are not supported yet
				break;
		}
	}
}
 

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mCoordinatorLayout = (CoordinatorLayout)findViewById(R.id.main_coordinator);
    mDrawerLayout = (DrawerLayout)findViewById(R.id.main_drawer);
    mNavigationView = (NavigationView)findViewById(R.id.main_navigation);
    mToolbar = (Toolbar)findViewById(R.id.toolbar);
    mFloatingActionButton = (FloatingActionButton)findViewById(R.id.main_fab);

    // Load preferences
    mInternalPrefs = getSharedPreferences(PreferenceConsts.FILE_INTERNAL, MODE_PRIVATE);
    mInternalPrefs.edit().putInt(PreferenceConsts.KEY_APP_VERSION, VERSION_CODE).apply();

    // Setup toolbar
    setSupportActionBar(mToolbar);
    getSupportActionBar().setHomeButtonEnabled(true);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    // Setup navigation drawer
    mNavigationView.setNavigationItemSelectedListener(this);
    mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, mToolbar, R.string.open_drawer, R.string.close_drawer);
    mDrawerToggle.setDrawerIndicatorEnabled(true);
    mDrawerLayout.addDrawerListener(mDrawerToggle);
    mDrawerToggle.syncState();

    // This is used to cache displayed snackbars, so we can
    // dismiss them when switching between fragments.
    mSnackbars = Collections.newSetFromMap(new WeakHashMap<Snackbar, Boolean>());

    // Create the notification channel immediately so user can
    // configure them immediately without needing to receive
    // a notification first
    NotificationHelper.createNotificationChannel(this);

    // Don't do this if the activity is being re-created (e.g.
    // after a screen rotation), since it will cause the fragment
    // to be created twice (see http://stackoverflow.com/a/13306633/)
    if (savedInstanceState == null) {
        // Process intent. If an action was taken, don't do the rest.
        if (handleIntent(getIntent())) {
            return;
        }

        // Show info dialogs as necessary
        if (!XposedUtils.isModuleEnabled()) {
            if (XposedUtils.isXposedInstalled(this)) {
                showEnableModuleDialog();
            } else {
                // We should probably show a different dialog if the
                // user doesn't even have Xposed installed...
                showEnableModuleDialog();
            }
        } else if (XposedUtils.isModuleUpdated()) {
            showModuleUpdatedDialog();
        } else {
            showTaskKillerDialogIfNecessary();
        }

        // Set the section that was selected previously
        String section = mInternalPrefs.getString(PreferenceConsts.KEY_SELECTED_SECTION, EXTRA_SECTION_BLACKLIST_RULES);
        setContentSection(section);
    }
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {

    setDayNightTheme();

    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_main);
    Toolbar toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    if (getSupportActionBar() != null) {
        getSupportActionBar().setDisplayShowTitleEnabled(false);
    }

    DrawerLayout drawer = findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.addDrawerListener(toggle);
    toggle.syncState();

    NavigationView navigationView = findViewById(R.id.nav_view);
    navigationView.setBackgroundColor(getResources().getColor(R.color.colorBackground));
    navigationView.setNavigationItemSelectedListener(this);

    changeDrawerWithVersionAndDestination(navigationView);

    viewPager = findViewById(R.id.viewPager);
    if (viewPager != null) {
        viewPager.setOffscreenPageLimit(4);

        ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager(), ViewPagerAdapter.BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT);

        MainFragment mainFragment = new MainFragment();

        DNSCryptRunFragment dnsCryptRunFragment = new DNSCryptRunFragment();

        TorRunFragment torRunFragment = new TorRunFragment();
        ITPDRunFragment itpdRunFragment = new ITPDRunFragment();

        adapter.addFragment(new ViewPagerAdapter.ViewPagerFragment("Main", mainFragment));
        adapter.addFragment(new ViewPagerAdapter.ViewPagerFragment("DNS", dnsCryptRunFragment));
        adapter.addFragment(new ViewPagerAdapter.ViewPagerFragment("Tor", torRunFragment));
        adapter.addFragment(new ViewPagerAdapter.ViewPagerFragment("I2P", itpdRunFragment));

        viewPager.setAdapter(adapter);

        TabLayout tabLayout = findViewById(R.id.tabs);
        tabLayout.setupWithViewPager(viewPager);

        viewPager.setCurrentItem(viewPagerPosition);
    }

    modulesStatus = ModulesStatus.getInstance();

    startAppExitDetectService();
}
 

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        getSupportActionBar().setTitle("");

        mPrefs = PreferenceManager.getDefaultSharedPreferences(this);

        View rootView = findViewById(R.id.root);
        layoutOn = rootView.findViewById(R.id.layout_on);
        layoutOff = rootView.findViewById(R.id.layout_off);
/*        layoutOn.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                setProofModeOn(false);
                return true;
            }
        });
        layoutOff.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                setProofModeOn(true);
                return true;
            }
        });*/

        if (mPrefs.getBoolean("firsttime",true)) {
            startActivityForResult(new Intent(this, OnboardingActivity.class), REQUEST_CODE_INTRO);
        }

        //Setup drawer
        drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawerToggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, 0, 0);
        drawer.addDrawerListener(drawerToggle);
        drawerToggle.syncState();

        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);

        ImageButton btnSettings = findViewById(R.id.btnSettings);
        btnSettings.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                openSettings();
            }
        });

        updateOnOffState(false);
    }