samples/BusinessCard/src/com/example/android/businesscard/ContactAccessorSdk5.java

/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.businesscard;

import android.content.ContentResolver;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.provider.ContactsContract.Contacts;
import android.provider.ContactsContract.CommonDataKinds.Phone;

/**
 * An implementation of {@link ContactAccessor} that uses current Contacts API.
 * This class should be used on Eclair or beyond, but would not work on any earlier
 * release of Android.  As a matter of fact, it could not even be loaded.
 * <p>
 * This implementation has several advantages:
 * <ul>
 * <li>It sees contacts from multiple accounts.
 * <li>It works with aggregated contacts. So for example, if the contact is the result
 * of aggregation of two raw contacts from different accounts, it may return the name from
 * one and the phone number from the other.
 * <li>It is efficient because it uses the more efficient current API.
 * <li>Not obvious in this particular example, but it has access to new kinds
 * of data available exclusively through the new APIs. Exercise for the reader: add support
 * for nickname (see {@link android.provider.ContactsContract.CommonDataKinds.Nickname}) or
 * social status updates (see {@link android.provider.ContactsContract.StatusUpdates}).
 * </ul>
 */
public class ContactAccessorSdk5 extends ContactAccessor {

    /**
     * Returns a Pick Contact intent using the Eclair "contacts" URI.
     */
    @Override
    public Intent getPickContactIntent() {
        return new Intent(Intent.ACTION_PICK, Contacts.CONTENT_URI);
    }

    /**
     * Retrieves the contact information.
     */
    @Override
    public ContactInfo loadContact(ContentResolver contentResolver, Uri contactUri) {
        ContactInfo contactInfo = new ContactInfo();
        long contactId = -1;

        // Load the display name for the specified person
        Cursor cursor = contentResolver.query(contactUri,
                new String[]{Contacts._ID, Contacts.DISPLAY_NAME}, null, null, null);
        try {
            if (cursor.moveToFirst()) {
                contactId = cursor.getLong(0);
                contactInfo.setDisplayName(cursor.getString(1));
            }
        } finally {
            cursor.close();
        }

        // Load the phone number (if any).
        cursor = contentResolver.query(Phone.CONTENT_URI,
                new String[]{Phone.NUMBER},
                Phone.CONTACT_ID + "=" + contactId, null, Phone.IS_SUPER_PRIMARY + " DESC");
        try {
            if (cursor.moveToFirst()) {
                contactInfo.setPhoneNumber(cursor.getString(0));
            }
        } finally {
            cursor.close();
        }

        return contactInfo;
    }
}