How to get contacts' phone number in Android

Android Contact API For 2.0

//
//  Find contact based on name.
//
ContentResolver cr = getContentResolver();
Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null,
    "DISPLAY_NAME = '" + NAME + "'", null, null);
if (cursor.moveToFirst()) {
    String contactId =
        cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));
    //
    //  Get all phone numbers.
    //
    Cursor phones = cr.query(Phone.CONTENT_URI, null,
        Phone.CONTACT_ID + " = " + contactId, null, null);
    while (phones.moveToNext()) {
        String number = phones.getString(phones.getColumnIndex(Phone.NUMBER));
        int type = phones.getInt(phones.getColumnIndex(Phone.TYPE));
        switch (type) {
            case Phone.TYPE_HOME:
                // do something with the Home number here...
                break;
            case Phone.TYPE_MOBILE:
                // do something with the Mobile number here...
                break;
            case Phone.TYPE_WORK:
                // do something with the Work number here...
                break;
        }
    }
    phones.close();
}
cursor.close();

For more information see this link

try this.

    ContentResolver cr = getContentResolver();
    Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null,
            null, null, null);
    if (cur.getCount() > 0) {
        while (cur.moveToNext()) {
            String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
            String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
            Log.i("Names", name);
            if (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) 
            {
                // Query phone here. Covered next
                Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "+ id,null, null); 
                while (phones.moveToNext()) { 
                         String phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                         Log.i("Number", phoneNumber);
                        } 
                phones.close(); 
            }

        }
    }

You need permission like -

 android:name="android.permission.READ_CONTACTS"/>

Then, Calling the Contact Picker

 Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);

Then,

@Override
public void onActivityResult(int reqCode, int resultCode, Intent data) {
super.onActivityResult(reqCode, resultCode, data);

switch (reqCode) {
case (PICK_CONTACT) :
   if (resultCode == Activity.RESULT_OK) {
   Uri contactData = data.getData();
   Cursor c =  managedQuery(contactData, null, null, null, null);
    if (c.moveToFirst()) {
     String name = c.getString(c.getColumnIndexOrThrow(People.NAME));
     // TODO Whatever you want to do with the selected contact name.
   }
 }
 break;
 }
}

Old question but I don't see the following answer here.

private static final String[] PROJECTION ={
        ContactsContract.Contacts._ID,
        ContactsContract.CommonDataKinds.Phone.NUMBER,
        ContactsContract.Contacts.DISPLAY_NAME_PRIMARY,
        ContactsContract.Contacts.PHOTO_THUMBNAIL_URI,
        ContactsContract.Contacts.LOOKUP_KEY,
};

new CursorLoader(
        this,
        ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
        PROJECTION,
        null,
        null,//mSelectionArgs,
        ContactsContract.Contacts.DISPLAY_NAME_PRIMARY
);

Use column index ContactsContract.CommonDataKinds.Phone.NUMBER to retreive the phone number from the cursor.