I used to use content resolver previously to fetch Contact list and their details while that still works I wanted to try the Loader method which queries the Content Provider
This is an excerpt of what I actually do in my (working) code.
These are my relevant imports:
import android.provider.ContactsContract;
import android.provider.ContactsContract.CommonDataKinds.Email;
import android.provider.ContactsContract.CommonDataKinds.Phone;
import android.provider.ContactsContract.Contacts;
Given that id is a string (representing a number, like "1", "20", ...)
// Query for phone numbers for the selected contact id
final Cursor cur = getContentResolver().query
(
Phone.CONTENT_URI, null,
Phone.CONTACT_ID + "=?",
new String[] {id}, null
);
final int phoneIdx = cur.getColumnIndex(Phone.NUMBER);
final int phoneType = cur.getColumnIndex(Phone.TYPE);
// ...
if(cur.moveToFirst())
{
final String name =
cur.getString
(
cur.getColumnIndexOrThrow
(
ContactsContract.Contacts.DISPLAY_NAME
)
);
}
Hope it puts you on the right path
In my case the problem was with URI.
I was using this:
Uri uri = ContactsContract.Contacts.CONTENT_URI;
and I changed for this (Phone.CONTENT_URI) to resolve the problem and obtain the phone number:
Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
This is the rest of the code:
contactos = (TextView) findViewById(R.id.contactos);
Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
String [] projection = new String[] {
ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER
};
Cursor cursor = getContentResolver().query(uri, projection, null, null, null);
while (cursor.moveToNext()){
String nombre = cursor.getString(cursor.getColumnIndex(ContactsContract.Data.DISPLAY_NAME));
String telefono = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
contactos.append("Name: ");
contactos.append(nombre);
contactos.append(" - Phone Number: ");
contactos.append(telefono);
contactos.append("\n");
}
You are using a URI that is not meant for searching/filtering those columns (e.g. phone numbers) on Contacts:
You need to use a URI that has access to the columns you're trying to filter on, like this:
Uri uri = ContactsContract.Data.CONTENT_URI;
Or maybe this one since you're searching phone numbers:
Uri uri = ContactsContract.PhoneLookup.CONTENT_FILTER_URI;
There's a decent breakdown of what URIs to use and when on the Android SDK Documentation:
If you need to read an individual contact, consider using CONTENT_LOOKUP_URI instead of CONTENT_URI.
If you need to look up a contact by the phone number, use PhoneLookup.CONTENT_FILTER_URI, which is optimized for this purpose.
If you need to look up a contact by partial name, e.g. to produce filter-as-you-type suggestions, use the CONTENT_FILTER_URI URI.
If you need to look up a contact by some data element like email address, nickname, etc, use a query against the ContactsContract.Data table. The result will contain contact ID, name etc.