show unread message count in app icon android

Question

How to implement unread message notification in our app like in messaging (in picture)?

any help appreciated

Answer 1

public int getNumberOfUnreadMessages(Context context) {

   final Uri SMS_INBOX_URI = Uri.parse("content://sms/inbox");
   Cursor inboxCursor = context.getContentResolver().query(SMS_INBOX_URI, null, "read =  
    0", null, null);
   int unreadMessagesCount = inboxCursor.getCount();
   inboxCursor.close();
   return unreadMessagesCount;
   }