获取通讯录

        String string = "";
        super.onCreate(savedInstanceState);
        ContentResolver cr = getContentResolver();
        Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
        while (cursor.moveToNext()) 
        {
        int nameFieldColumnIndex = cursor.getColumnIndex(PhoneLookup.DISPLAY_NAME);
        String contact = cursor.getString(nameFieldColumnIndex);
        string += contact + ":";
        String contactId = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));
        Cursor phone = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, 
        ContactsContract.CommonDataKinds.Phone.CONTACT_ID+"="+contactId, null, null);
        while (phone.moveToNext()) 
        {
        int numberFieldColumnIndex = phone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
        String strPhoneNumber = phone.getString(numberFieldColumnIndex);
        string += " " + strPhoneNumber;
        }
        string += "\n";
        phone.close();
        }
        cursor.close();