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Android example source code file (SyncAdapter.java)

This example Android source code file (SyncAdapter.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

abstractthreadedsyncadapter, account, accountmanager, accounts, android, authenticationexception, authenticatorexception, calling, content, contentproviderclient, context, date, ioexception, jsonexception, list, os, parseexception, string, syncadapter, util

The SyncAdapter.java Android example source code

 * Copyright (C) 2010 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.samplesync.syncadapter;

import android.accounts.Account;
import android.accounts.AccountManager;
import android.accounts.AuthenticatorException;
import android.accounts.OperationCanceledException;
import android.content.AbstractThreadedSyncAdapter;
import android.content.ContentProviderClient;
import android.content.Context;
import android.content.SyncResult;
import android.os.Bundle;
import android.util.Log;

import com.example.android.samplesync.Constants;
import com.example.android.samplesync.client.NetworkUtilities;
import com.example.android.samplesync.client.User;
import com.example.android.samplesync.client.User.Status;
import com.example.android.samplesync.platform.ContactManager;

import org.apache.http.ParseException;
import org.apache.http.auth.AuthenticationException;
import org.json.JSONException;

import java.io.IOException;
import java.util.Date;
import java.util.List;

 * SyncAdapter implementation for syncing sample SyncAdapter contacts to the
 * platform ContactOperations provider.
public class SyncAdapter extends AbstractThreadedSyncAdapter {
    private static final String TAG = "SyncAdapter";

    private final AccountManager mAccountManager;
    private final Context mContext;

    private Date mLastUpdated;

    public SyncAdapter(Context context, boolean autoInitialize) {
        super(context, autoInitialize);
        mContext = context;
        mAccountManager = AccountManager.get(context);

    public void onPerformSync(Account account, Bundle extras, String authority,
        ContentProviderClient provider, SyncResult syncResult) {
        List<User> users;
        List<Status> statuses;
        String authtoken = null;
         try {
             // use the account manager to request the credentials
             authtoken =
                    Constants.AUTHTOKEN_TYPE, true /* notifyAuthFailure */);
             // fetch updates from the sample service over the cloud
             users =
                NetworkUtilities.fetchFriendUpdates(account, authtoken,
            // update the last synced date.
            mLastUpdated = new Date();
            // update platform contacts.
            Log.d(TAG, "Calling contactManager's sync contacts");
            ContactManager.syncContacts(mContext, account.name, users);
            // fetch and update status messages for all the synced users.
            statuses = NetworkUtilities.fetchFriendStatuses(account, authtoken);
            ContactManager.insertStatuses(mContext, account.name, statuses);
        } catch (final AuthenticatorException e) {
            Log.e(TAG, "AuthenticatorException", e);
        } catch (final OperationCanceledException e) {
            Log.e(TAG, "OperationCanceledExcetpion", e);
        } catch (final IOException e) {
            Log.e(TAG, "IOException", e);
        } catch (final AuthenticationException e) {
            Log.e(TAG, "AuthenticationException", e);
        } catch (final ParseException e) {
            Log.e(TAG, "ParseException", e);
        } catch (final JSONException e) {
            Log.e(TAG, "JSONException", e);

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