You might have noticed that lot of android applications introduced a sliding panel menu to navigate between major modules of the application. Previously this kind of UI was done using some third party libraries where a list view and some swiping gestures used to achieve this. But now android itself officially introduced sliding panel menu by introducing a newer concept called Navigation Drawer in which we combine DrawerLayout and NavigationView to achieve the desired output.

Most of the time Sliding Menu (Navigation Drawer) will be hidden and can be shown by swiping the screen from left edge to right or tapping the app icon on the action bar.




Example Applications

You can see lot of popular applications like Facebook, Youtube, Google + already introduced navigation drawer menu in their applications. Following are the navigation drawer menus of multiple apps.

  1. Android Studio Navigation Drawer Template

You can add Navigation Drawer in your app in two ways. The quick and easy way is choosing the Navigation Drawer Activity from Android Studio when the new project is created. This creates an empty project with navigation drawer added.

This creates the below basic skeleton app with few navigation menu items.

Even though Android Studio gives you basic Navigation Drawer Menu, making it fully functional takes some effort. The next steps explains how to customize the navigation drawer appearance by adding header imageprofile image and other texts. You will also learn how to prepare and attach the other menu views by creating the fragments and loading them properly.

To give you full information about navigation drawer, instead of choosing the drawer temple, I am creating an empty project and add the navigation drawer by explaining every step is needed. So let’s get started.

Below is the final output we are going to achieve in this article.

  1. Starting new Project
  2. 1. Create a new project in Android Studio from File New Project by filling the required details. When it prompts you to select the activity, choose Empty Activity and continue.
  3. 2. Open gradle located in app level and add below dependencies. I am adding Glide image library dependency. This is not needed for navigation drawer, but to load the profile image from url.
build.gradle
dependencies {

compile fileTree(dir: ‘libs’, include: [‘*.jar’])

compile ‘com.android.support:appcompat-v7:24.0.0-beta1’

compile ‘com.android.support:design:24.0.0-beta1’

compile ‘com.android.support:support-v4:24.0.0-beta1’

 

// Glide image library

compile ‘com.github.bumptech.glide:glide:3.7.0’

}




  1. 3. Open xmldimens.xmlcolors.xmllocated under res valuesand add the below values.
strings.xml
<resources>

<string name=”app_name”>Navigation Drawer</string>

 

<string name=”navigation_drawer_open”>Open navigation drawer</string>

<string name=”navigation_drawer_close”>Close navigation drawer</string>

<string name=”openDrawer”>open_drawer</string>

<string name=”closeDrawer”>close_drawer</string>

 

<!– Navigation Drawer menu labels –>

<string name=”nav_home”>Home</string>

<string name=”nav_photos”>Photos</string>

<string name=”nav_movies”>Movies</string>

<string name=”nav_notifications”>Notifications</string>

<string name=”nav_settings”>Settings</string>

<string name=”nav_about_us”>About Us</string>

 

<!– Toolbar titles when navigation menu item is selected –>

<string-array name=”nav_item_activity_titles”>

<item>Home</item>

<item>Photos</item>

<item>Movies</item>

<item>Notifications</item>

<item>Settings</item>

</string-array>

 

<string name=”activity_title_about_us”>About Us</string>

<string name=”activity_title_privacy_policy”>Privacy Policy</string>

<string name=”action_clear_all”>Clear All</string>

<string name=”action_logout”>Logout</string>

<string name=”action_mark_all_read”>Mark All as Read</string>

<string name=”privacy_policy”>Privacy Policy</string>

</resources>

dimens.xml
<resources>

<!– Default screen margins, per the Android Design guidelines. –>

<dimen name=”nav_header_vertical_spacing”>16dp</dimen>

<dimen name=”nav_header_height”>160dp</dimen>

 

<!– Default screen margins, per the Android Design guidelines. –>

<dimen name=”activity_horizontal_margin”>16dp</dimen>

<dimen name=”activity_vertical_margin”>16dp</dimen>

<dimen name=”fab_margin”>16dp</dimen>

<dimen name=”profile_width”>75dp</dimen>

<dimen name=”profile_height”>75dp</dimen>

</resources>

 

colors.xml
<?xml version=”1.0″ encoding=”utf-8″?>

<resources>

<color name=”colorPrimary”>#d32f2f</color>

<color name=”colorPrimaryDark”>#c72c2c</color>

<color name=”colorAccent”>#FFFFFF</color>

</resources>

  1. 4. Download HomePhotosMoviesNotificationsSettingsicons from Material Iconsand add them to your project’s res These icons will be used as navigation menu item icons.
  2. 5. Under res menudirectory, create two menu xml files named xmland main.xml. These menus are used to render different toolbar overflow menus when the user switches between navigation drawer items.
notifications.xml
<?xml version=”1.0″ encoding=”utf-8″?>

<menu xmlns:android=”http://schemas.android.com/apk/res/android

xmlns:app=”http://schemas.android.com/apk/res-auto“>

<item

android:id=”@+id/action_mark_all_read”

android:orderInCategory=”100″

android:title=”@string/action_mark_all_read”

app:showAsAction=”never” />

 

<item

android:id=”@+id/action_clear_notifications”

android:orderInCategory=”101″

android:title=”@string/action_clear_all”

app:showAsAction=”never” />

</menu>

main.xml
<?xml version=”1.0″ encoding=”utf-8″?>

<menu xmlns:android=”http://schemas.android.com/apk/res/android

xmlns:app=”http://schemas.android.com/apk/res-auto“>

<item

android:id=”@+id/action_logout”

android:orderInCategory=”100″

android:title=”@string/action_logout”

app:showAsAction=”never” />

</menu>




Creating Fragments & Activities

  1. 6. Create three packages named activityfragmentotherand move the javato activity package.
  2. 7. Create all the fragment classes needed for navigation menu. Overall I am creating five fragment classes. Right clickon fragmentpackage, New Fragment Fragment (Blank) and name it as java. This fragment will be loaded always whenever user open the app.

Likewise create other fragment activities named PhotosFragmentMoviesFragmentNotificationsFragment and SettingsFragment.

  1. 8. In our navigation drawer menu, there are two other menu items, About Usand Privacy Policy. For these two we are gonna create activities instead of fragments. Create new two activitiesnamed java and PrivacyPolicyActivity.java.
  2. 9. Inside otherpackage, create a class named javaThis class is used to display the profile image in circular fashion.
CircleTransform.java
package info.androidhive.navigationdrawer.other;

 

import android.content.Context;

import android.graphics.Bitmap;

import android.graphics.BitmapShader;

import android.graphics.Canvas;

import android.graphics.Paint;

 

import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;

import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;

 

/**

* Created by Lincoln on 10/03/16.

*/

public class CircleTransform extends BitmapTransformation {

public CircleTransform(Context context) {

super(context);

}

 

@Override

protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {

return circleCrop(pool, toTransform);

}

 

private static Bitmap circleCrop(BitmapPool pool, Bitmap source) {

if (source == null) return null;

 

int size = Math.min(source.getWidth(), source.getHeight());

int x = (source.getWidth() – size) / 2;

int y = (source.getHeight() – size) / 2;

 

// TODO this could be acquired from the pool too

Bitmap squared = Bitmap.createBitmap(source, x, y, size, size);

 

Bitmap result = pool.get(size, size, Bitmap.Config.ARGB_8888);

if (result == null) {

result = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);

}

 

Canvas canvas = new Canvas(result);

Paint paint = new Paint();

paint.setShader(new BitmapShader(squared, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));

paint.setAntiAlias(true);

float r = size / 2f;

canvas.drawCircle(r, r, r, paint);

return result;

}

 

@Override

public String getId() {

return getClass().getName();

}

}

  1. 10. Under res drawable, create a file named xml. This provides circular background to view.
bg_circle.xml
<?xml version=”1.0″ encoding=”utf-8″?>

<shape

xmlns:android=”http://schemas.android.com/apk/res/android

android:shape=”oval”>

 

<solid

android:color=”@color/colorPrimary”/>

 

<size

android:width=”120dp”

android:height=”120dp”/>

</shape>

  1. 11. Under res layoutfolder, create a layout named xml. This layout is used to render dot next to notifications label.
menu_dot.xml
<?xml version=”1.0″ encoding=”utf-8″?>

<LinearLayout xmlns:android=”http://schemas.android.com/apk/res/android

android:layout_width=”match_parent”

android:layout_height=”match_parent”

android:gravity=”center_vertical”

android:orientation=”vertical”>

 

<LinearLayout

android:layout_width=”6dp”

android:layout_height=”6dp”

android:background=”@drawable/bg_circle”></LinearLayout>

 

</LinearLayout>

Adding Navigation Drawer

  1. 12. Under res menudirectory, create a menu xml file named xml. This menu renders the Navigation Drawer list items. Here we set the iconsand labels. You can also notice here <group> is used to combine multiple items under single levels. An <item> also can be used group multiple child items with a title. This provides a horizontal separator between the two sets.
activity_main_drawer.xml
<?xml version=”1.0″ encoding=”utf-8″?>

<menu xmlns:android=”http://schemas.android.com/apk/res/android“>

 

<group android:checkableBehavior=”single”>

<item

android:id=”@+id/nav_home”

android:icon=”@drawable/ic_home_black_24dp”

android:title=”@string/nav_home” />

<item

android:id=”@+id/nav_photos”

android:icon=”@drawable/ic_photo_library_black_24dp”

android:title=”@string/nav_photos” />

<item

android:id=”@+id/nav_movies”

android:icon=”@drawable/ic_local_movies_black_24dp”

android:title=”@string/nav_movies” />

 

<item

android:id=”@+id/nav_notifications”

android:icon=”@drawable/ic_notifications_black_24dp”

android:title=”@string/nav_notifications” />

 

<item

android:id=”@+id/nav_settings”

android:icon=”@drawable/ic_settings_black_24dp”

android:title=”@string/nav_settings” />

</group>

 

<item android:title=”Other”>

<menu>

<item

android:id=”@+id/nav_about_us”

android:title=”@string/nav_about_us” />

<item

android:id=”@+id/nav_privacy_policy”

android:title=”@string/privacy_policy” />

</menu>

</item>

 

</menu>

  1. 13. Under res layout, create a file named xmlThis layout renders the navigation drawer header part with a profile image, name and website.
nav_header_main.xml
<?xml version=”1.0″ encoding=”utf-8″?>

<RelativeLayout xmlns:android=”http://schemas.android.com/apk/res/android

xmlns:app=”http://schemas.android.com/apk/res-auto

android:id=”@+id/view_container”

android:layout_width=”match_parent”

android:layout_height=”@dimen/nav_header_height”

android:gravity=”bottom”

android:orientation=”vertical”

android:theme=”@style/ThemeOverlay.AppCompat.Dark”>

 

<ImageView

android:id=”@+id/img_header_bg”

android:layout_width=”match_parent”

android:layout_height=”match_parent”

android:scaleType=”fitXY”

android:src=”@mipmap/ic_launcher” />

 

<LinearLayout

android:layout_width=”wrap_content”

android:layout_height=”wrap_content”

android:layout_centerVertical=”true”

android:orientation=”vertical”

android:padding=”@dimen/activity_horizontal_margin”>

 

<ImageView

android:id=”@+id/img_profile”

android:layout_width=”@dimen/profile_width”

android:layout_height=”@dimen/profile_height”

android:paddingTop=”@dimen/nav_header_vertical_spacing”

app:srcCompat=”@android:drawable/sym_def_app_icon” />

 

<TextView

android:id=”@+id/name”

android:layout_width=”match_parent”

android:layout_height=”wrap_content”

android:paddingTop=”@dimen/nav_header_vertical_spacing”

android:textAppearance=”@style/TextAppearance.AppCompat.Body1″ />

 

<TextView

android:id=”@+id/website”

android:layout_width=”wrap_content”

android:layout_height=”wrap_content” />

 

</LinearLayout>

</RelativeLayout>




  1. 14. Now we’ll create another layout file to add required ToolbarFABand FrameLayout. FrameLayout is used to load appropriate fragment when an item is selected from nav menu. Create a layout file named xmlunder res layout.
app_bar_main.xml
<?xml version=”1.0″ encoding=”utf-8″?>

<android.support.design.widget.CoordinatorLayout xmlns:android=”http://schemas.android.com/apk/res/android

xmlns:app=”http://schemas.android.com/apk/res-auto

xmlns:tools=”http://schemas.android.com/tools

android:layout_width=”match_parent”

android:layout_height=”match_parent”

android:fitsSystemWindows=”true”

tools:context=”info.androidhive.navigationdrawer.activity.MainActivity”>

 

<android.support.design.widget.AppBarLayout

android:layout_width=”match_parent”

android:layout_height=”wrap_content”

android:theme=”@style/AppTheme.AppBarOverlay”>

 

<android.support.v7.widget.Toolbar

android:id=”@+id/toolbar”

android:layout_width=”match_parent”

android:layout_height=”?attr/actionBarSize”

android:background=”?attr/colorPrimary”

app:popupTheme=”@style/AppTheme.PopupOverlay” />

 

</android.support.design.widget.AppBarLayout>

 

<FrameLayout

android:id=”@+id/frame”

android:layout_width=”match_parent”

android:layout_height=”match_parent”

app:layout_behavior=”@string/appbar_scrolling_view_behavior”></FrameLayout>

 

<android.support.design.widget.FloatingActionButton

android:id=”@+id/fab”

android:layout_width=”wrap_content”

android:layout_height=”wrap_content”

android:layout_gravity=”bottom|end”

android:layout_margin=”@dimen/fab_margin”

app:backgroundTint=”@color/colorPrimary”

app:srcCompat=”@android:drawable/ic_dialog_email” />

 

</android.support.design.widget.CoordinatorLayout>

  1. 15. Open the layout file your main activity xmland add NavigationViewelement. You can notice that the toolbar layout is added using <include> tag.
activity_main.xml
<?xml version=”1.0″ encoding=”utf-8″?>

<android.support.v4.widget.DrawerLayout xmlns:android=”http://schemas.android.com/apk/res/android

xmlns:app=”http://schemas.android.com/apk/res-auto

xmlns:tools=”http://schemas.android.com/tools

android:id=”@+id/drawer_layout”

android:layout_width=”match_parent”

android:layout_height=”match_parent”

android:fitsSystemWindows=”true”

tools:openDrawer=”start”>

 

<include

layout=”@layout/app_bar_main”

android:layout_width=”match_parent”

android:layout_height=”match_parent” />

 

<android.support.design.widget.NavigationView

android:id=”@+id/nav_view”

android:layout_width=”wrap_content”

android:layout_height=”match_parent”

android:layout_gravity=”start”

android:fitsSystemWindows=”true”

app:headerLayout=”@layout/nav_header_main”

app:menu=”@menu/activity_main_drawer” />

 

</android.support.v4.widget.DrawerLayout>

  1. 16. Now we have all the required elements in place. It’s time to open the main activity and do the necessary changes to make the navigation drawer functional. Open javaand modify as explained below.

setUpNavigationView() – Initializes the Navigation Drawer by creating necessary click listeners and other functions.

loadNavHeader() – Function loads the navigation drawer header information like profile image, name and website. Here we use Glide image library to load the profile image.

getHomeFragment() – Returns the appropriate Fragment depending on the nav menu item user selected. For example if user selects Photos from nav menu, it returns PhotosFragment. This can be done by using the variable navItemIndex.

loadHomeFragment() – Loads the fragment returned from getHomeFragment() function into FrameLayout. It also takes care of other things like changing the toolbar title, hiding / showing fab, invalidating the options menu so that new menu can be loaded for different fragment.

Other code is very easy to understand and self explanatory. I have also added comments to each code block for better understanding.




MainActivity.java
package info.androidhive.navigationdrawer.activity;

 

import android.content.Intent;

import android.os.Bundle;

import android.os.Handler;

import android.support.design.widget.FloatingActionButton;

import android.support.design.widget.NavigationView;

import android.support.design.widget.Snackbar;

import android.support.v4.app.Fragment;

import android.support.v4.app.FragmentTransaction;

import android.support.v4.view.GravityCompat;

import android.support.v4.widget.DrawerLayout;

import android.support.v7.app.ActionBarDrawerToggle;

import android.support.v7.app.AppCompatActivity;

import android.support.v7.widget.Toolbar;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.widget.ImageView;

import android.widget.TextView;

import android.widget.Toast;

 

import com.bumptech.glide.Glide;

import com.bumptech.glide.load.engine.DiskCacheStrategy;

 

import info.androidhive.navigationdrawer.R;

import info.androidhive.navigationdrawer.fragment.HomeFragment;

import info.androidhive.navigationdrawer.fragment.MoviesFragment;

import info.androidhive.navigationdrawer.fragment.NotificationsFragment;

import info.androidhive.navigationdrawer.fragment.PhotosFragment;

import info.androidhive.navigationdrawer.fragment.SettingsFragment;

import info.androidhive.navigationdrawer.other.CircleTransform;

 

public class MainActivity extends AppCompatActivity {

 

private NavigationView navigationView;

private DrawerLayout drawer;

private View navHeader;

private ImageView imgNavHeaderBg, imgProfile;

private TextView txtName, txtWebsite;

private Toolbar toolbar;

private FloatingActionButton fab;

 

// urls to load navigation header background image

// and profile image

private static final String urlNavHeaderBg = “http://api.androidhive.info/images/nav-menu-header-bg.jpg“;

private static final String urlProfileImg = “https://lh3.googleusercontent.com/eCtE_G34M9ygdkmOpYvCag1vBARCmZwnVS6rS5t4JLzJ6QgQSBquM0nuTsCpLhYbKljoyS-txg“;

 

// index to identify current nav menu item

public static int navItemIndex = 0;

 

// tags used to attach the fragments

private static final String TAG_HOME = “home”;

private static final String TAG_PHOTOS = “photos”;

private static final String TAG_MOVIES = “movies”;

private static final String TAG_NOTIFICATIONS = “notifications”;

private static final String TAG_SETTINGS = “settings”;

public static String CURRENT_TAG = TAG_HOME;

 

// toolbar titles respected to selected nav menu item

private String[] activityTitles;

 

// flag to load home fragment when user presses back key

private boolean shouldLoadHomeFragOnBackPress = true;

private Handler mHandler;

 

 

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

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

setSupportActionBar(toolbar);

 

mHandler = new Handler();

 

drawer = (DrawerLayout) findViewById(R.id.drawer_layout);

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

fab = (FloatingActionButton) findViewById(R.id.fab);

 

// Navigation view header

navHeader = navigationView.getHeaderView(0);

txtName = (TextView) navHeader.findViewById(R.id.name);

txtWebsite = (TextView) navHeader.findViewById(R.id.website);

imgNavHeaderBg = (ImageView) navHeader.findViewById(R.id.img_header_bg);

imgProfile = (ImageView) navHeader.findViewById(R.id.img_profile);

 

// load toolbar titles from string resources

activityTitles = getResources().getStringArray(R.array.nav_item_activity_titles);

 

fab.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

Snackbar.make(view, “Replace with your own action”, Snackbar.LENGTH_LONG)

.setAction(“Action”, null).show();

}

});

 

// load nav menu header data

loadNavHeader();

 

// initializing navigation menu

setUpNavigationView();

 

if (savedInstanceState == null) {

navItemIndex = 0;

CURRENT_TAG = TAG_HOME;

loadHomeFragment();

}

}

 

/***

* Load navigation menu header information

* like background image, profile image

* name, website, notifications action view (dot)

*/

private void loadNavHeader() {

// name, website

txtName.setText(“Ravi Tamada”);

txtWebsite.setText(“www.androidhive.info”);

 

// loading header background image

Glide.with(this).load(urlNavHeaderBg)

.crossFade()

.diskCacheStrategy(DiskCacheStrategy.ALL)

.into(imgNavHeaderBg);

 

// Loading profile image

Glide.with(this).load(urlProfileImg)

.crossFade()

.thumbnail(0.5f)

.bitmapTransform(new CircleTransform(this))

.diskCacheStrategy(DiskCacheStrategy.ALL)

.into(imgProfile);

 

// showing dot next to notifications label

navigationView.getMenu().getItem(3).setActionView(R.layout.menu_dot);

}

 

/***

* Returns respected fragment that user

* selected from navigation menu

*/

private void loadHomeFragment() {

// selecting appropriate nav menu item

selectNavMenu();

 

// set toolbar title

setToolbarTitle();

 

// if user select the current navigation menu again, don’t do anything

// just close the navigation drawer

if (getSupportFragmentManager().findFragmentByTag(CURRENT_TAG) != null) {

drawer.closeDrawers();

 

// show or hide the fab button

toggleFab();

return;

}

 

// Sometimes, when fragment has huge data, screen seems hanging

// when switching between navigation menus

// So using runnable, the fragment is loaded with cross fade effect

// This effect can be seen in GMail app

Runnable mPendingRunnable = new Runnable() {

@Override

public void run() {

// update the main content by replacing fragments

Fragment fragment = getHomeFragment();

FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();

fragmentTransaction.setCustomAnimations(android.R.anim.fade_in,

android.R.anim.fade_out);

fragmentTransaction.replace(R.id.frame, fragment, CURRENT_TAG);

fragmentTransaction.commitAllowingStateLoss();

}

};

 

// If mPendingRunnable is not null, then add to the message queue

if (mPendingRunnable != null) {

mHandler.post(mPendingRunnable);

}

 

// show or hide the fab button

toggleFab();

 

//Closing drawer on item click

drawer.closeDrawers();

 

// refresh toolbar menu

invalidateOptionsMenu();

}

 

private Fragment getHomeFragment() {

switch (navItemIndex) {

case 0:

// home

HomeFragment homeFragment = new HomeFragment();

return homeFragment;

case 1:

// photos

PhotosFragment photosFragment = new PhotosFragment();

return photosFragment;

case 2:

// movies fragment

MoviesFragment moviesFragment = new MoviesFragment();

return moviesFragment;

case 3:

// notifications fragment

NotificationsFragment notificationsFragment = new NotificationsFragment();

return notificationsFragment;

 

case 4:

// settings fragment

SettingsFragment settingsFragment = new SettingsFragment();

return settingsFragment;

default:

return new HomeFragment();

}

}

 

private void setToolbarTitle() {

getSupportActionBar().setTitle(activityTitles[navItemIndex]);

}

 

private void selectNavMenu() {

navigationView.getMenu().getItem(navItemIndex).setChecked(true);

}

 

private void setUpNavigationView() {

//Setting Navigation View Item Selected Listener to handle the item click of the navigation menu

navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {

 

// This method will trigger on item Click of navigation menu

@Override

public boolean onNavigationItemSelected(MenuItem menuItem) {

 

//Check to see which item was being clicked and perform appropriate action

switch (menuItem.getItemId()) {

//Replacing the main content with ContentFragment Which is our Inbox View;

case R.id.nav_home:

navItemIndex = 0;

CURRENT_TAG = TAG_HOME;

break;

case R.id.nav_photos:

navItemIndex = 1;

CURRENT_TAG = TAG_PHOTOS;

break;

case R.id.nav_movies:

navItemIndex = 2;

CURRENT_TAG = TAG_MOVIES;

break;

case R.id.nav_notifications:

navItemIndex = 3;

CURRENT_TAG = TAG_NOTIFICATIONS;

break;

case R.id.nav_settings:

navItemIndex = 4;

CURRENT_TAG = TAG_SETTINGS;

break;

case R.id.nav_about_us:

// launch new intent instead of loading fragment

startActivity(new Intent(MainActivity.this, AboutUsActivity.class));

drawer.closeDrawers();

return true;

case R.id.nav_privacy_policy:

// launch new intent instead of loading fragment

startActivity(new Intent(MainActivity.this, PrivacyPolicyActivity.class));

drawer.closeDrawers();

return true;

default:

navItemIndex = 0;

}

 

//Checking if the item is in checked state or not, if not make it in checked state

if (menuItem.isChecked()) {

menuItem.setChecked(false);

} else {

menuItem.setChecked(true);

}

menuItem.setChecked(true);

 

loadHomeFragment();

 

return true;

}

});

 

 

ActionBarDrawerToggle actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.openDrawer, R.string.closeDrawer) {

 

@Override

public void onDrawerClosed(View drawerView) {

// Code here will be triggered once the drawer closes as we dont want anything to happen so we leave this blank

super.onDrawerClosed(drawerView);

}

 

@Override

public void onDrawerOpened(View drawerView) {

// Code here will be triggered once the drawer open as we dont want anything to happen so we leave this blank

super.onDrawerOpened(drawerView);

}

};

 

//Setting the actionbarToggle to drawer layout

drawer.setDrawerListener(actionBarDrawerToggle);

 

//calling sync state is necessary or else your hamburger icon wont show up

actionBarDrawerToggle.syncState();

}

 

@Override

public void onBackPressed() {

if (drawer.isDrawerOpen(GravityCompat.START)) {

drawer.closeDrawers();

return;

}

 

// This code loads home fragment when back key is pressed

// when user is in other fragment than home

if (shouldLoadHomeFragOnBackPress) {

// checking if user is on other navigation menu

// rather than home

if (navItemIndex != 0) {

navItemIndex = 0;

CURRENT_TAG = TAG_HOME;

loadHomeFragment();

return;

}

}

 

super.onBackPressed();

}

 

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

 

// show menu only when home fragment is selected

if (navItemIndex == 0) {

getMenuInflater().inflate(R.menu.main, menu);

}

 

// when fragment is notifications, load the menu created for notifications

if (navItemIndex == 3) {

getMenuInflater().inflate(R.menu.notifications, menu);

}

return true;

}

 

@Override

public boolean onOptionsItemSelected(MenuItem item) {

// Handle action bar item clicks here. The action bar will

// automatically handle clicks on the Home/Up button, so long

// as you specify a parent activity in AndroidManifest.xml.

int id = item.getItemId();

 

//noinspection SimplifiableIfStatement

if (id == R.id.action_logout) {

Toast.makeText(getApplicationContext(), “Logout user!”, Toast.LENGTH_LONG).show();

return true;

}

 

// user is in notifications fragment

// and selected ‘Mark all as Read’

if (id == R.id.action_mark_all_read) {

Toast.makeText(getApplicationContext(), “All notifications marked as read!”, Toast.LENGTH_LONG).show();

}

 

// user is in notifications fragment

// and selected ‘Clear All’

if (id == R.id.action_clear_notifications) {

Toast.makeText(getApplicationContext(), “Clear all notifications!”, Toast.LENGTH_LONG).show();

}

 

return super.onOptionsItemSelected(item);

}

 

// show or hide the fab

private void toggleFab() {

if (navItemIndex == 0)

fab.show();

else

fab.hide();

}

}




Run and test the app once. You should able to see the app as shown below. Also check the Video demo of fully implemented navigation drawer.

Download Example Code