How to get contacts which are used in whatsapp or other application in android

Question

Hi i want to get contact which are used by other application (like whatsapp or viber ) please see in below image

Answer 1

myWhatsappContacts ArrayList will contain all the phone numbers that are present in your whatsapp Application.

Cursor cursor = getContentResolver().query(ContactsContract.Data.CONTENT_URI 
                  ,new String[] {ContactsContract.Data._ID
                               ,ContactsContract.Data.DISPLAY_NAME
                               ,ContactsContract.CommonDataKinds.Phone.NUMBER 
                               ,ContactsContract.CommonDataKinds.Phone.TYPE}
                  ,ContactsContract.Data.MIMETYPE + "='" + ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE
                  + "' AND " + ContactsContract.RawContacts.ACCOUNT_TYPE + "= ?"
                  ,new String[] { "com.whatsapp" }
                  , null);

    while (cursor.moveToNext())
    {

        myWhatsappContacts.add(cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER))); 

    }