Get a contact's groups?

Question

I\'m trying to make a many-to-many mapping of contacts to groups.

For example, if I have:

• User 1, belongs to group 701, 702, 704
• User 2, belon

Answer 1

A complete answer will be: First the fetch the group cursor (same as the answer above)

Cursor groups_cursor= getContentResolver().query(
        ContactsContract.Groups.CONTENT_URI,
        new String[]{
                ContactsContract.Groups._ID,
                ContactsContract.Groups.TITLE
        }, null, null, null
);

Store all the group_id and group_title in a groups HashMap using this code:

 if(groups_cursor!=null){
        while(groups_cursor.moveToNext()){
            String group_title = groups_cursor.getString(1);
            String id = groups_cursor.getString(0);
            groups.put(id, group_title);
        }
    }

Then using the above answer's data_cursor, fetch contacts_ids and their group_ids.

Cursor dataCursor = getContentResolver().query(
        ContactsContract.Data.CONTENT_URI,
        new String[]{
                ContactsContract.Data.CONTACT_ID,
                ContactsContract.Data.DATA1
        },
        ContactsContract.Data.MIMETYPE + "=?",
        new String[]{ContactsContract.CommonDataKinds.GroupMembership.CONTENT_ITEM_TYPE}, null
);

Now using the dataCursor and the groups HashMap.

    if(dataCursor!=null){
            while(dataCursor.moveToNext()){
                String id  = dataCursor.getString(0);
                String group_id= dataCursor.getString(1);
                String groupTitle = groups.get(group_id);
                Log.d(TAG, "groupTitle : " + groupTitle + " contact_id: " + id );
           }
  }