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

Question

Hello
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

for 1 you should have a look at the recommended ContactsContract.PhoneLookup provider

A table that represents the result of looking up a phone number, for example for caller ID. To perform a lookup you must append the number you want to find to CONTENT_FILTER_URI. This query is highly optimized.

Uri uri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI, Uri.encode(phoneNumber));
Cursor mycursor=resolver.query(uri, new String[]{PhoneLookup.DISPLAY_NAME,...
if (mycursor!=null && mycursor.moveToFirst()) {
// record exists
}

for 2 you can use the context from the onReceive method to call methods that belong to Context

ContentResolver cr=context.getContentResolver();

Answer 2

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()) {
      return true;
}
} finally {
if (cur != null)
   cur.close();
}
return false;
}