Android : Check phone number present in Contact List ? (Phone number retrieve from phone call)

Question

I make a BroadcastReceiver to receive Phone number of the person who call me

<intent-filter>
<action
    android:name="android.intent.action.PHONE_STATE" />
</intent-filter>

1. How to check if the phone number receive is on my contact list ?
   Do you have a tip to know if this phone number exist on contact list with out loading contact list ?
   I don't want more information, just if this phone number exist.

2. If it's not possible, and I must load contact list, how to do it on BroadcastReceiver ?
   When I try to do getContentResolver, it's not working because I'm on BroadcastReceiver and not inside Activity...

Thanks for your help

Answer 1

public boolean contactExists(Context context, String number) {
    // number is the phone number
    Uri lookupUri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI, Uri.encode(number));
    String[] mPhoneNumberProjection = { PhoneLookup._ID, PhoneLookup.NUMBER, PhoneLookup.DISPLAY_NAME };
    Cursor cur = context.getContentResolver().query(lookupUri, mPhoneNumberProjection, null, null, null);
    try {
        if (cur.moveToFirst()) {
            cur.close();
            return true;
        }
    } finally {
        if (cur != null)
            cur.close();
        }
   }

   return false;
}