how to set unread notification count in NavigationView of DrawerLayout?

Updated answer:

Using app:actionLayout with support library 23.1.1 or higher will support the custom layout as below.

Create your custom counter layout like below.

menu_counter.xml:

<?xml version="1.0" encoding="utf-8"?><TextView xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="wrap_content"    android:layout_height="match_parent"    android:gravity="center_vertical"    android:textAppearance="@style/TextAppearance.AppCompat.Body2" />

Reference it in your drawer menu item in xml.

menu/drawer.xml:

<item    android:id="@+id/navigation_drawer_item_1"    android:icon="@drawable/ic_menu_1"    android:title="@string/navigation_drawer_item_1"    app:actionLayout="@layout/menu_counter"    />

Note that you should use app namespace, don't try to use android.

Alternatively you can manually set action view with MenuItem.setActionView() method.

Find menu item and set counter like below code:

private void setMenuCounter(@IdRes int itemId, int count) {    TextView view = (TextView) navigationView.getMenu().findItem(itemId).getActionView();    view.setText(count > 0 ? String.valueOf(count) : null);}

Note, that you will need to use MenuItemCompat if you have to support Android 2.x versions.

Previous Answer (For older version) :

Solved with ListView inside NavigationView as below code...

<android.support.design.widget.NavigationView    android:id="@+id/my_courses_nav_view"    android:layout_width="wrap_content"    android:layout_height="match_parent"    android:layout_gravity="start"    android:fitsSystemWindows="true"    app:headerLayout="@layout/nav_header" >    <FrameLayout        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_marginTop="150dp" > <!-- Give layout margin top according to "headerLayout" height -->        <ListView            android:id="@+id/left_drawer"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:background="@android:color/white"            android:cacheColorHint="@android:color/transparent"            android:choiceMode="singleChoice"            android:divider="@android:color/transparent"            android:dividerHeight="0dp" />    </FrameLayout></android.support.design.widget.NavigationView>

In your activity set list item as below...

    private final String[] mMenuTitles = { getResources().getString(R.string.bookmarks), getResources().getString(R.string.alerts), getResources().getString(R.string.settings)  };    private final int[] mMenuIconId = { R.drawable.ic_drawer_bookmarks, R.drawable.ic_drawer_alerts, R.drawable.ic_drawer_settings };    ListView mDrawerList = (ListView) findViewById(R.id.left_drawer);    mDrawerList.setOnItemClickListener(new DrawerItemClickListener());    private ArrayList<SlideMenuItem> drawerItemList = new ArrayList<SlideMenuItem>();               for( int i = 0; i < mMenuTitles.length; i++ ) {        SlideMenuItem item = new SlideMenuItem();        item.setTitle(mMenuTitles[i]);        item.setIconID(mMenuIconId[i]);        // item..setUnread(5) //set or update unread count & notify dataset changed to adapter        drawerItemList.add(item);    }    MenuAdapter mMenuAdapter = new MenuAdapter( MyCoursesActivity.this, R.layout.drawer_list_item, drawerItemList);    mDrawerList.setAdapter(mMenuAdapter);

The click listener for ListView in the navigation drawer...

private class DrawerItemClickListener implements ListView.OnItemClickListener {    @Override    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {        try {            mDrawerLayout.closeDrawers();            SlideMenuItem item =  (SlideMenuItem) parent.getItemAtPosition(position);            switch (item.getIconId()) {                case R.drawable.ic_drawer_bookmarks: {                }                break;                case R.drawable.ic_drawer_alerts: {                }                break;                case R.drawable.ic_drawer_settings: {                }                break;                                  default: {                }                break;            }        } catch (Exception e) {                     }    }}

MenuAdapter..java

public class MenuAdapter extends ArrayAdapter<SlideMenuItem> {private Activity activity;private List<SlideMenuItem> itemList;private SlideMenuItem item;private int row;public MenuAdapter(Activity act, int resource, List<SlideMenuItem> arrayList) {    super(act, resource, arrayList);    this.activity = act;    this.row = resource;    this.itemList = arrayList;}@Overridepublic View getView(final int position, View convertView, ViewGroup parent) {    View view = convertView;    ViewHolder holder;    if (view == null) {        LayoutInflater inflater = (LayoutInflater) activity                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);        view = inflater.inflate(row, null);        holder = new ViewHolder();        holder.tvTitle = (TextView) view.findViewById(R.id.menu_title);        holder.imgView = (ImageView) view.findViewById(R.id.menu_icon);        holder.tvUnread = (TextView) view.findViewById(R.id.unread_count);        view.setTag(holder);    } else {        holder = (ViewHolder) view.getTag();    }    if ((itemList == null) || ((position + 1) > itemList.size()))        return view;    item = itemList.get(position);    holder.tvTitle.setText(item.getTitle());    holder.imgView.setImageResource(item.getIconId());    if( item.getUnreadCount() > 0 ) {        holder.tvUnread.setVisibility(View.VISIBLE);        holder.tvUnread.setText(item.getUnread());        if( MyCoursesActivity.DRAWER_MENU_ALERTS_POSITION == position ) {            holder.tvUnread.setBackgroundResource(R.drawable.round_unread_count_bg_red);            }        else {            holder.tvUnread.setBackgroundResource(R.drawable.round_unread_count_bg_green);        }    }    else {        holder.tvUnread.setVisibility(View.GONE);    }    return view;}public class ViewHolder {    public TextView tvTitle;    public ImageView imgView;    public TextView tvUnread;}}

drawer_list_item.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"><RelativeLayoutandroid:id="@+id/drawar_list_view"android:layout_width="match_parent"android:layout_height="match_parent" ><ImageView    android:id="@+id/menu_icon"    android:layout_width="20dp"    android:layout_height="20dp"    android:layout_alignParentLeft="true"    android:layout_centerVertical="true"    android:layout_marginLeft="16dp"    android:layout_marginRight="16dp"    android:gravity="center_vertical"    android:src="@drawable/ic_drawer" /><TextView    android:id="@+id/menu_title"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:layout_centerVertical="true"    android:layout_toLeftOf="@+id/unread_count"    android:layout_toRightOf="@+id/menu_icon"    android:minHeight="?attr/listPreferredItemHeightSmall"    android:paddingLeft="16dp"    android:paddingRight="16dp"    android:text="About Us"    android:gravity="center_vertical"    android:textAppearance="?android:attr/textAppearanceSmall"    android:textColor="@android:color/black" /><TextView    android:id="@+id/unread_count"    android:layout_width="20dp"    android:layout_height="20dp"    android:layout_alignParentRight="true"    android:layout_centerHorizontal="true"    android:layout_centerVertical="true"    android:layout_marginLeft="16dp"    android:layout_marginRight="16dp"    android:gravity="center"     android:text="99+"    android:textColor="@android:color/white"    android:textSize="10sp"    android:visibility="gone" />

SlideMenuItem.java

public class SlideMenuItem {private Bitmap icon;private String title;private String unread;private int iconID;public String getTitle() {    return title;}public void setTitle(String title) {    this.title = title;}public Bitmap getIcon() {    return icon;}public void setIcon(Bitmap icon) {    this.icon = icon;}public int getIconId() {    return iconID;}public void setIconID(int icon) {    this.iconID = icon;}public String getUnread() {    return unread;}public int getUnreadCount() {    int count = Flinnt.INVALID;    try {        if( null != unread ) {            count = Integer.parseInt(unread);        }    } catch (Exception e) {    }    return count;}public void setUnread(String unread) {    this.unread = unread;}}

I found this easy to implement solution on this web site https://android.jlelse.eu/android-adding-badge-or-count-to-the-navigation-drawer-84c93af1f4d9 Follow the steps below

Step 1: Create an Android Studio project, instead of choosing empty activity select “Navigation Drawer Activity”.

Step 2:Adding “actionViewClass” attribute to the navigation drawer menu (i.e. menu/youractivityname_drawer.xml)

<menu xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"><group android:checkableBehavior="single">    <item        android:id="@+id/nav_camera"        android:icon="@drawable/ic_menu_camera"        android:title="Import" />    <item        android:id="@+id/nav_gallery"        app:actionViewClass="android.widget.TextView"        android:icon="@drawable/ic_menu_gallery"        android:title="Gallery" />    <item        android:id="@+id/nav_slideshow"        app:actionViewClass="android.widget.TextView"        android:icon="@drawable/ic_menu_slideshow"        android:title="Slideshow" />    <item        android:id="@+id/nav_manage"        android:icon="@drawable/ic_menu_manage"        android:title="Tools" /></group>

Step 3 : Declare the Navigation Drawer menu item and initialize the item with the badge value. In your main Activity, declare the menu item of the Navigation Drawer as given below

//Create these objects above OnCreate()of your main activityTextView slideshow,gallery;//These lines should be added in the OnCreate() of your main activity NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view); navigationView.setNavigationItemSelectedListener(this);gallery=(TextView) MenuItemCompat.getActionView(navigationView.getMenu().        findItem(R.id.nav_gallery));slideshow=(TextView) MenuItemCompat.getActionView(navigationView.getMenu().        findItem(R.id.nav_slideshow));//This method will initialize the count valueinitializeCountDrawer();

Step 5: Initialize initializeCountDrawer() where ever it’s required. It can also be used to update the count or badge value in the navigation drawer menu item.

private void initializeCountDrawer(){   //Gravity property aligns the text   gallery.setGravity(Gravity.CENTER_VERTICAL);   gallery.setTypeface(null, Typeface.BOLD);   gallery.setTextColor(getResources().getColor(R.color.colorAccent));   gallery.setText("99+");   slideshow.setGravity(Gravity.CENTER_VERTICAL);   slideshow.setTypeface(null,Typeface.BOLD);                                                                                                                    slideshow.setTextColor(getResources().getColor(R.color.colorAccent));  //count is added       slideshow.setText("7");}

Source: https://android.jlelse.eu/android-adding-badge-or-count-to-the-navigation-drawer-84c93af1f4d9

NavigationView is designed to be an easy way to implement a basic navigation drawer that is compliant with the Material design guidelines.

If you want anything more than a basic navigation drawer (i.e. one with text navigation items and an optional header), you will need to create your own layout for your navigation drawer.