How to get Group ID of contacts Number (Android)

Question

How to get Group ID knowing contact's Number

I guess it have to be another query inside this one, but I have not ANY idea how to do it

Here what I've tried:

String[] projection = new String[]{ ContactsContract.Groups._ID };

Cursor cursor = getContentResolver().query(
        ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
        projection,
        ContactsContract.CommonDataKinds.Phone.NUMBER +" = "+ number,
        null,
        null);

cursor.moveToNext();
String id = cursor.getString(cursor.getColumnIndex(ContactsContract.Groups._ID));

(Query returns nothing)

Thanks for help!

Answer 1

Your query returns nothing, because there is no such column Groups._ID within dataset CommonDataKinds.Phone .

Try something like this:

String sPhoneNumber = "+48123456789";    
Cursor cursor = getApplicationContext().getContentResolver().query(
                Data.CONTENT_URI, new String[] {CommonDataKinds.GroupMembership._ID}, 
                ContactsContract.CommonDataKinds.Phone.NUMBER+"='"+sPhoneNumber+"'", null, null);

where sPhoneNumber is String with desired phone number. Keep in mind, that your cursor may still return 0 depending on:

1. how your phone number is formatted, ie you wish to find group ID for contact of given number +49123456789 while number is formatted like this +49 123 456 789 . Whitespaces are making this completely different String .
2. your contact does not belong to any group.

Also cursor can still return more results, mostly in cases when your contact belongs to more than one group.