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/*
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* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* 文件: GTaskClient.java
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* 描述: Google Tasks客户端，负责与Google Tasks API进行通信
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* 作用: 提供与Google Tasks服务器交互的接口，包括登录认证、数据请求和操作提交等功能
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*/
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package net.micode.notes.gtask.remote;
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import android.accounts.Account;
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import android.accounts.AccountManager;
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import android.accounts.AccountManagerFuture;
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import android.app.Activity;
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import android.os.Bundle;
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import android.text.TextUtils;
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import android.util.Log;
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import net.micode.notes.gtask.data.Node;
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import net.micode.notes.gtask.data.Task;
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import net.micode.notes.gtask.data.TaskList;
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import net.micode.notes.gtask.exception.ActionFailureException;
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import net.micode.notes.gtask.exception.NetworkFailureException;
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import net.micode.notes.tool.GTaskStringUtils;
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import net.micode.notes.ui.NotesPreferenceActivity;
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import org.apache.http.HttpEntity;
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import org.apache.http.HttpResponse;
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import org.apache.http.client.ClientProtocolException;
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import org.apache.http.client.entity.UrlEncodedFormEntity;
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import org.apache.http.client.methods.HttpGet;
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import org.apache.http.client.methods.HttpPost;
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import org.apache.http.cookie.Cookie;
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import org.apache.http.impl.client.BasicCookieStore;
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import org.apache.http.impl.client.DefaultHttpClient;
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import org.apache.http.message.BasicNameValuePair;
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import org.apache.http.params.BasicHttpParams;
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import org.apache.http.params.HttpConnectionParams;
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import org.apache.http.params.HttpParams;
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import org.apache.http.params.HttpProtocolParams;
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import org.json.JSONArray;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.zip.GZIPInputStream;
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import java.util.zip.Inflater;
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import java.util.zip.InflaterInputStream;
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/**
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* Google Tasks客户端类
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*
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* 该类负责与Google Tasks API进行通信，提供登录认证、数据请求和操作提交等功能。
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* 使用单例模式确保全局只有一个客户端实例，管理与Google Tasks服务器的连接和会话。
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*
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* 主要功能包括：
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* 1. Google账户认证和登录
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* 2. 获取任务列表和任务数据
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* 3. 创建、更新和删除任务及任务列表
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* 4. 处理HTTP请求和响应
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*/
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public class GTaskClient {
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/** 日志标签 */
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private static final String TAG = GTaskClient.class.getSimpleName();
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/** Google Tasks基础URL */
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private static final String GTASK_URL = "https://mail.google.com/tasks/";
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/** Google Tasks GET请求URL */
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private static final String GTASK_GET_URL = "https://mail.google.com/tasks/ig";
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/** Google Tasks POST请求URL */
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private static final String GTASK_POST_URL = "https://mail.google.com/tasks/r/ig";
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/** 单例实例 */
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private static GTaskClient mInstance = null;
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/** HTTP客户端 */
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private DefaultHttpClient mHttpClient;
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/** GET请求URL */
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private String mGetUrl;
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/** POST请求URL */
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private String mPostUrl;
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/** 客户端版本号 */
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private long mClientVersion;
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/** 登录状态标志 */
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private boolean mLoggedin;
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/** 最后登录时间 */
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private long mLastLoginTime;
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/** 操作ID计数器 */
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private int mActionId;
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/** Google账户 */
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private Account mAccount;
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/** 更新操作数组 */
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private JSONArray mUpdateArray;
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/**
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* 私有构造函数，初始化Google Tasks客户端
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* 遵循单例模式，只能通过getInstance方法获取实例
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*/
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private GTaskClient() {
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mHttpClient = null;
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mGetUrl = GTASK_GET_URL;
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mPostUrl = GTASK_POST_URL;
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mClientVersion = -1;
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mLoggedin = false;
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mLastLoginTime = 0;
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mActionId = 1;
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mAccount = null;
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mUpdateArray = null;
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}
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/**
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* 获取GTaskClient的单例实例
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*
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* @return GTaskClient的单例实例
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*/
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public static synchronized GTaskClient getInstance() {
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if (mInstance == null) {
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mInstance = new GTaskClient();
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}
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return mInstance;
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}
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/**
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* 登录Google Tasks服务
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*
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* @param activity 用于获取账户授权的活动
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* @return 登录是否成功
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*/
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public boolean login(Activity activity) {
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// 检查登录会话是否过期（5分钟）
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final long interval = 1000 * 60 * 5;
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if (mLastLoginTime + interval < System.currentTimeMillis()) {
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mLoggedin = false;
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}
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// 切换账户后需要重新登录
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if (mLoggedin
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&& !TextUtils.equals(getSyncAccount().name, NotesPreferenceActivity
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.getSyncAccountName(activity))) {
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mLoggedin = false;
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}
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// 如果已登录，直接返回
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if (mLoggedin) {
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Log.d(TAG, "already logged in");
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return true;
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}
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// 更新最后登录时间并获取授权令牌
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mLastLoginTime = System.currentTimeMillis();
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String authToken = loginGoogleAccount(activity, false);
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if (authToken == null) {
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Log.e(TAG, "login google account failed");
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return false;
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}
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// 如果是自定义域名账户，需要特殊处理
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if (!(mAccount.name.toLowerCase().endsWith("gmail.com") || mAccount.name.toLowerCase()
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.endsWith("googlemail.com"))) {
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StringBuilder url = new StringBuilder(GTASK_URL).append("a/");
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int index = mAccount.name.indexOf('@') + 1;
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String suffix = mAccount.name.substring(index);
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url.append(suffix + "/");
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mGetUrl = url.toString() + "ig";
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mPostUrl = url.toString() + "r/ig";
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if (tryToLoginGtask(activity, authToken)) {
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mLoggedin = true;
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}
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}
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// 尝试使用官方URL登录
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if (!mLoggedin) {
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mGetUrl = GTASK_GET_URL;
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mPostUrl = GTASK_POST_URL;
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if (!tryToLoginGtask(activity, authToken)) {
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return false;
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}
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}
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mLoggedin = true;
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return true;
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}
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/**
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* 登录Google账户并获取授权令牌
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*
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* @param activity 用于获取账户授权的活动
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* @param invalidateToken 是否使当前令牌失效并重新获取
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* @return 授权令牌，失败返回null
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*/
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private String loginGoogleAccount(Activity activity, boolean invalidateToken) {
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String authToken;
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AccountManager accountManager = AccountManager.get(activity);
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Account[] accounts = accountManager.getAccountsByType("com.google");
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// 检查是否有可用的Google账户
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if (accounts.length == 0) {
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Log.e(TAG, "there is no available google account");
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return null;
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}
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// 根据设置中的账户名找到对应账户
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String accountName = NotesPreferenceActivity.getSyncAccountName(activity);
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Account account = null;
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for (Account a : accounts) {
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if (a.name.equals(accountName)) {
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account = a;
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break;
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}
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}
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if (account != null) {
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mAccount = account;
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} else {
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Log.e(TAG, "unable to get an account with the same name in the settings");
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return null;
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}
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// 获取授权令牌
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AccountManagerFuture<Bundle> accountManagerFuture = accountManager.getAuthToken(account,
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"goanna_mobile", null, activity, null, null);
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try {
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Bundle authTokenBundle = accountManagerFuture.getResult();
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authToken = authTokenBundle.getString(AccountManager.KEY_AUTHTOKEN);
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if (invalidateToken) {
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// 使令牌失效并重新获取
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accountManager.invalidateAuthToken("com.google", authToken);
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loginGoogleAccount(activity, false);
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}
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} catch (Exception e) {
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Log.e(TAG, "get auth token failed");
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authToken = null;
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}
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return authToken;
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}
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/**
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* 尝试登录Google Tasks服务
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*
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* @param activity 用于获取账户授权的活动
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* @param authToken 授权令牌
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* @return 登录是否成功
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*/
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private boolean tryToLoginGtask(Activity activity, String authToken) {
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if (!loginGtask(authToken)) {
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// 如果令牌过期，使其失效并重新尝试
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authToken = loginGoogleAccount(activity, true);
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if (authToken == null) {
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Log.e(TAG, "login google account failed");
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return false;
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}
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if (!loginGtask(authToken)) {
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Log.e(TAG, "login gtask failed");
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return false;
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}
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}
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return true;
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}
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/**
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* 使用授权令牌登录Google Tasks服务
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*
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* @param authToken 授权令牌
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* @return 登录是否成功
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*/
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private boolean loginGtask(String authToken) {
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// 设置HTTP连接参数
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int timeoutConnection = 10000;
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int timeoutSocket = 15000;
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HttpParams httpParameters = new BasicHttpParams();
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HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection);
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HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);
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mHttpClient = new DefaultHttpClient(httpParameters);
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BasicCookieStore localBasicCookieStore = new BasicCookieStore();
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mHttpClient.setCookieStore(localBasicCookieStore);
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HttpProtocolParams.setUseExpectContinue(mHttpClient.getParams(), false);
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// 登录Google Tasks
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try {
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String loginUrl = mGetUrl + "?auth=" + authToken;
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HttpGet httpGet = new HttpGet(loginUrl);
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HttpResponse response = null;
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response = mHttpClient.execute(httpGet);
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// 获取认证Cookie
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List<Cookie> cookies = mHttpClient.getCookieStore().getCookies();
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boolean hasAuthCookie = false;
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for (Cookie cookie : cookies) {
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if (cookie.getName().contains("GTL")) {
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hasAuthCookie = true;
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}
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}
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if (!hasAuthCookie) {
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Log.w(TAG, "it seems that there is no auth cookie");
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}
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// 获取客户端版本号
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String resString = getResponseContent(response.getEntity());
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String jsBegin = "_setup(";
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String jsEnd = ")}</script>";
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int begin = resString.indexOf(jsBegin);
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int end = resString.lastIndexOf(jsEnd);
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String jsString = null;
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if (begin != -1 && end != -1 && begin < end) {
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jsString = resString.substring(begin + jsBegin.length(), end);
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}
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JSONObject js = new JSONObject(jsString);
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mClientVersion = js.getLong("v");
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} catch (JSONException e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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return false;
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} catch (Exception e) {
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// 捕获所有异常
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Log.e(TAG, "httpget gtask_url failed");
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return false;
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}
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return true;
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}
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private int getActionId() {
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return mActionId++;
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}
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private HttpPost createHttpPost() {
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HttpPost httpPost = new HttpPost(mPostUrl);
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httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
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httpPost.setHeader("AT", "1");
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return httpPost;
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}
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private String getResponseContent(HttpEntity entity) throws IOException {
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String contentEncoding = null;
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if (entity.getContentEncoding() != null) {
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contentEncoding = entity.getContentEncoding().getValue();
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Log.d(TAG, "encoding: " + contentEncoding);
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}
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InputStream input = entity.getContent();
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if (contentEncoding != null && contentEncoding.equalsIgnoreCase("gzip")) {
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input = new GZIPInputStream(entity.getContent());
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} else if (contentEncoding != null && contentEncoding.equalsIgnoreCase("deflate")) {
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Inflater inflater = new Inflater(true);
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input = new InflaterInputStream(entity.getContent(), inflater);
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}
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try {
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InputStreamReader isr = new InputStreamReader(input);
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BufferedReader br = new BufferedReader(isr);
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StringBuilder sb = new StringBuilder();
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while (true) {
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String buff = br.readLine();
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if (buff == null) {
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return sb.toString();
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}
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sb = sb.append(buff);
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}
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} finally {
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input.close();
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}
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}
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private JSONObject postRequest(JSONObject js) throws NetworkFailureException {
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if (!mLoggedin) {
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Log.e(TAG, "please login first");
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throw new ActionFailureException("not logged in");
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}
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HttpPost httpPost = createHttpPost();
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try {
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LinkedList<BasicNameValuePair> list = new LinkedList<BasicNameValuePair>();
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list.add(new BasicNameValuePair("r", js.toString()));
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UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list, "UTF-8");
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httpPost.setEntity(entity);
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// execute the post
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HttpResponse response = mHttpClient.execute(httpPost);
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String jsString = getResponseContent(response.getEntity());
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return new JSONObject(jsString);
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} catch (ClientProtocolException e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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throw new NetworkFailureException("postRequest failed");
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} catch (IOException e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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throw new NetworkFailureException("postRequest failed");
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} catch (JSONException e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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throw new ActionFailureException("unable to convert response content to jsonobject");
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} catch (Exception e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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|
|
throw new ActionFailureException("error occurs when posting request");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
public void createTask(Task task) throws NetworkFailureException {
|
|
|
commitUpdate();
|
|
|
try {
|
|
|
JSONObject jsPost = new JSONObject();
|
|
|
JSONArray actionList = new JSONArray();
|
|
|
|
|
|
// action_list
|
|
|
actionList.put(task.getCreateAction(getActionId()));
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
|
|
|
|
|
|
// client_version
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
|
|
|
|
|
|
// post
|
|
|
JSONObject jsResponse = postRequest(jsPost);
|
|
|
JSONObject jsResult = (JSONObject) jsResponse.getJSONArray(
|
|
|
GTaskStringUtils.GTASK_JSON_RESULTS).get(0);
|
|
|
task.setGid(jsResult.getString(GTaskStringUtils.GTASK_JSON_NEW_ID));
|
|
|
|
|
|
} catch (JSONException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
throw new ActionFailureException("create task: handing jsonobject failed");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
public void createTaskList(TaskList tasklist) throws NetworkFailureException {
|
|
|
commitUpdate();
|
|
|
try {
|
|
|
JSONObject jsPost = new JSONObject();
|
|
|
JSONArray actionList = new JSONArray();
|
|
|
|
|
|
// action_list
|
|
|
actionList.put(tasklist.getCreateAction(getActionId()));
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
|
|
|
|
|
|
// client version
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
|
|
|
|
|
|
// post
|
|
|
JSONObject jsResponse = postRequest(jsPost);
|
|
|
JSONObject jsResult = (JSONObject) jsResponse.getJSONArray(
|
|
|
GTaskStringUtils.GTASK_JSON_RESULTS).get(0);
|
|
|
tasklist.setGid(jsResult.getString(GTaskStringUtils.GTASK_JSON_NEW_ID));
|
|
|
|
|
|
} catch (JSONException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
throw new ActionFailureException("create tasklist: handing jsonobject failed");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
public void commitUpdate() throws NetworkFailureException {
|
|
|
if (mUpdateArray != null) {
|
|
|
try {
|
|
|
JSONObject jsPost = new JSONObject();
|
|
|
|
|
|
// action_list
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, mUpdateArray);
|
|
|
|
|
|
// client_version
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
|
|
|
|
|
|
postRequest(jsPost);
|
|
|
mUpdateArray = null;
|
|
|
} catch (JSONException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
throw new ActionFailureException("commit update: handing jsonobject failed");
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
public void addUpdateNode(Node node) throws NetworkFailureException {
|
|
|
if (node != null) {
|
|
|
// too many update items may result in an error
|
|
|
// set max to 10 items
|
|
|
if (mUpdateArray != null && mUpdateArray.length() > 10) {
|
|
|
commitUpdate();
|
|
|
}
|
|
|
|
|
|
if (mUpdateArray == null)
|
|
|
mUpdateArray = new JSONArray();
|
|
|
mUpdateArray.put(node.getUpdateAction(getActionId()));
|
|
|
}
|
|
|
}
|
|
|
|
|
|
public void moveTask(Task task, TaskList preParent, TaskList curParent)
|
|
|
throws NetworkFailureException {
|
|
|
commitUpdate();
|
|
|
try {
|
|
|
JSONObject jsPost = new JSONObject();
|
|
|
JSONArray actionList = new JSONArray();
|
|
|
JSONObject action = new JSONObject();
|
|
|
|
|
|
// action_list
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
|
|
|
GTaskStringUtils.GTASK_JSON_ACTION_TYPE_MOVE);
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, getActionId());
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_ID, task.getGid());
|
|
|
if (preParent == curParent && task.getPriorSibling() != null) {
|
|
|
// put prioring_sibing_id only if moving within the tasklist and
|
|
|
// it is not the first one
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_PRIOR_SIBLING_ID, task.getPriorSibling());
|
|
|
}
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_SOURCE_LIST, preParent.getGid());
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_DEST_PARENT, curParent.getGid());
|
|
|
if (preParent != curParent) {
|
|
|
// put the dest_list only if moving between tasklists
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_DEST_LIST, curParent.getGid());
|
|
|
}
|
|
|
actionList.put(action);
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
|
|
|
|
|
|
// client_version
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
|
|
|
|
|
|
postRequest(jsPost);
|
|
|
|
|
|
} catch (JSONException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
throw new ActionFailureException("move task: handing jsonobject failed");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
public void deleteNode(Node node) throws NetworkFailureException {
|
|
|
commitUpdate();
|
|
|
try {
|
|
|
JSONObject jsPost = new JSONObject();
|
|
|
JSONArray actionList = new JSONArray();
|
|
|
|
|
|
// action_list
|
|
|
node.setDeleted(true);
|
|
|
actionList.put(node.getUpdateAction(getActionId()));
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
|
|
|
|
|
|
// client_version
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
|
|
|
|
|
|
postRequest(jsPost);
|
|
|
mUpdateArray = null;
|
|
|
} catch (JSONException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
throw new ActionFailureException("delete node: handing jsonobject failed");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
public JSONArray getTaskLists() throws NetworkFailureException {
|
|
|
if (!mLoggedin) {
|
|
|
Log.e(TAG, "please login first");
|
|
|
throw new ActionFailureException("not logged in");
|
|
|
}
|
|
|
|
|
|
try {
|
|
|
HttpGet httpGet = new HttpGet(mGetUrl);
|
|
|
HttpResponse response = null;
|
|
|
response = mHttpClient.execute(httpGet);
|
|
|
|
|
|
// get the task list
|
|
|
String resString = getResponseContent(response.getEntity());
|
|
|
String jsBegin = "_setup(";
|
|
|
String jsEnd = ")}</script>";
|
|
|
int begin = resString.indexOf(jsBegin);
|
|
|
int end = resString.lastIndexOf(jsEnd);
|
|
|
String jsString = null;
|
|
|
if (begin != -1 && end != -1 && begin < end) {
|
|
|
jsString = resString.substring(begin + jsBegin.length(), end);
|
|
|
}
|
|
|
JSONObject js = new JSONObject(jsString);
|
|
|
return js.getJSONObject("t").getJSONArray(GTaskStringUtils.GTASK_JSON_LISTS);
|
|
|
} catch (ClientProtocolException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
throw new NetworkFailureException("gettasklists: httpget failed");
|
|
|
} catch (IOException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
throw new NetworkFailureException("gettasklists: httpget failed");
|
|
|
} catch (JSONException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
throw new ActionFailureException("get task lists: handing jasonobject failed");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
public JSONArray getTaskList(String listGid) throws NetworkFailureException {
|
|
|
commitUpdate();
|
|
|
try {
|
|
|
JSONObject jsPost = new JSONObject();
|
|
|
JSONArray actionList = new JSONArray();
|
|
|
JSONObject action = new JSONObject();
|
|
|
|
|
|
// action_list
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
|
|
|
GTaskStringUtils.GTASK_JSON_ACTION_TYPE_GETALL);
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, getActionId());
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_LIST_ID, listGid);
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_GET_DELETED, false);
|
|
|
actionList.put(action);
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
|
|
|
|
|
|
// client_version
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
|
|
|
|
|
|
JSONObject jsResponse = postRequest(jsPost);
|
|
|
return jsResponse.getJSONArray(GTaskStringUtils.GTASK_JSON_TASKS);
|
|
|
} catch (JSONException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
throw new ActionFailureException("get task list: handing jsonobject failed");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
public Account getSyncAccount() {
|
|
|
return mAccount;
|
|
|
}
|
|
|
|
|
|
public void resetUpdateArray() {
|
|
|
mUpdateArray = null;
|
|
|
}
|
|
|
}
|
