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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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package net.micode.notes.ui;
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import android.accounts.Account;
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import android.accounts.AccountManager;
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import android.app.ActionBar;
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import android.app.AlertDialog;
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import android.content.BroadcastReceiver;
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import android.content.ContentValues;
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import android.content.Context;
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import android.content.DialogInterface;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.content.SharedPreferences;
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import android.os.Bundle;
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import android.preference.Preference;
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import android.preference.Preference.OnPreferenceClickListener;
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import android.preference.PreferenceActivity;
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import android.preference.PreferenceCategory;
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import android.text.TextUtils;
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import android.text.format.DateFormat;
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import android.view.LayoutInflater;
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import android.view.Menu;
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import android.view.MenuItem;
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import android.view.View;
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import android.widget.Button;
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import android.widget.TextView;
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import android.widget.Toast;
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import net.micode.notes.R;
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import net.micode.notes.data.Notes;
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import net.micode.notes.data.Notes.NoteColumns;
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import net.micode.notes.gtask.remote.GTaskSyncService;
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// 用于管理笔记应用的偏好设置的活动类
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public class NotesPreferenceActivity extends PreferenceActivity {
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// 偏好设置文件的名称
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public static final String PREFERENCE_NAME = "notes_preferences";
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// 同步账户名称的偏好设置键
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public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name";
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// 最后同步时间的偏好设置键
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public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time";
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// 设置背景颜色随机出现的偏好设置键（假设用途）
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public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear";
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// 同步账户偏好设置类别键
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private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";
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// 用于筛选账户的权限过滤器键（假设用途）
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private static final String AUTHORITIES_FILTER_KEY = "authorities";
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// 同步账户偏好设置类别
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private PreferenceCategory mAccountCategory;
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// 用于接收同步服务广播的接收器
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private GTaskReceiver mReceiver;
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// 原始账户列表（用于检测账户变化）
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private Account[] mOriAccounts;
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// 标记是否添加了新账户
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private boolean mHasAddedAccount;
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@Override
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protected void onCreate(Bundle icicle) {
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super.onCreate(icicle);
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// 使用应用图标作为导航返回按钮
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getActionBar().setDisplayHomeAsUpEnabled(true);
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// 加载偏好设置资源文件
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addPreferencesFromResource(R.xml.preferences);
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// 获取同步账户偏好设置类别
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mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);
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// 创建并注册同步服务广播接收器
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mReceiver = new GTaskReceiver();
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IntentFilter filter = new IntentFilter();
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filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME);
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registerReceiver(mReceiver, filter);
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mOriAccounts = null;
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// 为列表视图添加头部视图（用于显示额外信息）
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View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);
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getListView().addHeaderView(header, null, true);
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}
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@Override
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protected void onResume() {
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super.onResume();
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// 如果添加了新账户，自动设置同步账户
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if (mHasAddedAccount) {
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Account[] accounts = getGoogleAccounts();
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if (mOriAccounts!= null && accounts.length > mOriAccounts.length) {
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for (Account accountNew : accounts) {
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boolean found = false;
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for (Account accountOld : mOriAccounts) {
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if (TextUtils.equals(accountOld.name, accountNew.name)) {
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found = true;
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break;
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}
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}
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if (!found) {
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setSyncAccount(accountNew.name);
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break;
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}
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}
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}
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}
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// 刷新用户界面
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refreshUI();
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}
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@Override
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protected void onDestroy() {
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// 注销广播接收器
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if (mReceiver!= null) {
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unregisterReceiver(mReceiver);
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}
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super.onDestroy();
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}
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// 加载同步账户偏好设置
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private void loadAccountPreference() {
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mAccountCategory.removeAll();
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// 创建一个新的偏好设置项
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Preference accountPref = new Preference(this);
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final String defaultAccount = getSyncAccountName(this);
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// 设置偏好设置项的标题和摘要
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accountPref.setTitle(getString(R.string.preferences_account_title));
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accountPref.setSummary(getString(R.string.preferences_account_summary));
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// 设置偏好设置项的点击监听器
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accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
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public boolean onPreferenceClick(Preference preference) {
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// 如果同步服务未在运行
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if (!GTaskSyncService.isSyncing()) {
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// 如果尚未设置同步账户
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if (TextUtils.isEmpty(defaultAccount)) {
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// 显示选择账户的对话框
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showSelectAccountAlertDialog();
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} else {
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// 如果已经设置了同步账户，显示更改账户的确认对话框
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showChangeAccountConfirmAlertDialog();
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}
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} else {
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// 如果同步服务正在运行，显示提示信息
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Toast.makeText(NotesPreferenceActivity.this,
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R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT)
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.show();
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}
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return true;
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}
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});
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// 将偏好设置项添加到同步账户类别中
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mAccountCategory.addPreference(accountPref);
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}
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// 加载同步按钮相关设置
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private void loadSyncButton() {
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Button syncButton = (Button) findViewById(R.id.preference_sync_button);
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TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
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// 设置同步按钮的文本和点击监听器
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if (GTaskSyncService.isSyncing()) {
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syncButton.setText(getString(R.string.preferences_button_sync_cancel));
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syncButton.setOnClickListener(new View.OnClickListener() {
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public void onClick(View v) {
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GTaskSyncService.cancelSync(NotesPreferenceActivity.this);
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}
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});
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} else {
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syncButton.setText(getString(R.string.preferences_button_sync_immediately));
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syncButton.setOnClickListener(new View.OnClickListener() {
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public void onClick(View v) {
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GTaskSyncService.startSync(NotesPreferenceActivity.this);
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}
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});
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}
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// 根据是否设置了同步账户来启用或禁用同步按钮
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syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));
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// 设置最后同步时间的显示
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if (GTaskSyncService.isSyncing()) {
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lastSyncTimeView.setText(GTaskSyncService.getProgressString());
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lastSyncTimeView.setVisibility(View.VISIBLE);
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} else {
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long lastSyncTime = getLastSyncTime(this);
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if (lastSyncTime!= 0) {
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lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time,
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DateFormat.format(getString(R.string.preferences_last_sync_time_format),
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lastSyncTime)));
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lastSyncTimeView.setVisibility(View.VISIBLE);
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} else {
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lastSyncTimeView.setVisibility(View.GONE);
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}
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}
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}
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// 刷新用户界面，包括加载账户偏好设置和同步按钮设置
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private void refreshUI() {
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loadAccountPreference();
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loadSyncButton();
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}
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// 显示选择账户的对话框
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private void showSelectAccountAlertDialog() {
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AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
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// 设置对话框的标题视图
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View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
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TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
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titleTextView.setText(getString(R.string.preferences_dialog_select_account_title));
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TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
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subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips));
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dialogBuilder.setCustomTitle(titleView);
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// 先不设置对话框的确定按钮
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dialogBuilder.setPositiveButton(null, null);
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// 获取谷歌账户列表
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Account[] accounts = getGoogleAccounts();
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String defAccount = getSyncAccountName(this);
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mOriAccounts = accounts;
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mHasAddedAccount = false;
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if (accounts.length > 0) {
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// 创建账户名称的字符序列数组用于显示在对话框中
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CharSequence[] items = new CharSequence[accounts.length];
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final CharSequence[] itemMapping = items;
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int checkedItem = -1;
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int index = 0;
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for (Account account : accounts) {
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if (TextUtils.equals(account.name, defAccount)) {
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checkedItem = index;
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}
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items[index++] = account.name;
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}
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// 设置对话框为单选列表模式，并设置点击监听器
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dialogBuilder.setSingleChoiceItems(items, checkedItem,
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new DialogInterface.OnClickListener() {
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public void onClick(DialogInterface dialog, int which) {
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setSyncAccount(itemMapping[which].toString());
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dialog.dismiss();
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refreshUI();
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}
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});
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}
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// 设置对话框的视图（包含添加账户的提示）
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View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null);
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dialogBuilder.setView(addAccountView);
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// 显示对话框
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final AlertDialog dialog = dialogBuilder.show();
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// 设置添加账户视图的点击监听器
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addAccountView.setOnClickListener(new View.OnClickListener() {
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public void onClick(View v) {
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mHasAddedAccount = true;
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Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");
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intent.putExtra(AUTHORITIES_FILTER_KEY, new String[]{
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"gmail-ls"
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});
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startActivityForResult(intent, -1);
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dialog.dismiss();
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}
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});
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}
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// 显示更改账户的确认对话框
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private void showChangeAccountConfirmAlertDialog() {
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AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
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// 设置对话框的标题视图
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View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
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TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
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titleTextView.setText(getString(R.string.preferences_dialog_change_account_title,
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getSyncAccountName(this)));
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TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
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subtitleTextView.setText(getString(R.string.preferences_dialog_change_account_warn_msg));
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dialogBuilder.setCustomTitle(titleView);
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// 设置对话框的菜单项
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CharSequence[] menuItemArray = new CharSequence[]{
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getString(R.string.preferences_menu_change_account),
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getString(R.string.preferences_menu_remove_account),
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getString(R.string.preferences_menu_cancel)
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};
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dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() {
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public void onClick(DialogInterface dialog, int which) {
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if (which == 0) {
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showSelectAccountAlertDialog();
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} else if (which == 1) {
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removeSyncAccount();
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refreshUI();
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}
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}
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});
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// 显示对话框
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dialogBuilder.show();
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}
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// 获取谷歌账户列表
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private Account[] getGoogleAccounts() {
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AccountManager accountManager = AccountManager.get(this);
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return accountManager.getAccountsByType("com.google");
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}
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// 设置同步账户
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private void setSyncAccount(String account) {
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if (!getSyncAccountName(this).equals(account)) {
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SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
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SharedPreferences.Editor editor = settings.edit();
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if (account!= null) {
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editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, account);
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} else {
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editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
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}
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editor.commit();
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// 清除最后同步时间
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setLastSyncTime(this, 0);
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// 清除本地与gtask相关的信息（在新线程中执行）
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new Thread(new Runnable() {
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public void run() {
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ContentValues values = new ContentValues();
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values.put(NoteColumns.GTASK_ID, "");
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values.put(NoteColumns.SYNC_ID, 0);
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getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null);
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}
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}).start();
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Toast.makeText(NotesPreferenceActivity.this,
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getString(R.string.preferences_toast_success_set_accout, account),
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Toast.LENGTH_SHORT).show();
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}
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}
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// 移除同步账户
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private void removeSyncAccount() {
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SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
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SharedPreferences.Editor editor = settings.edit();
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if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) {
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editor.remove(PREFERENCE_SYNC_ACCOUNT_NAME);
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}
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if (settings.contains(PREFERENCE_LAST_SYNC_TIME)) {
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editor.remove(PREFERENCE_LAST_SYNC_TIME);
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}
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editor.commit();
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// 清除本地与gtask相关的信息（在新线程中执行）
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new Thread(new Runnable() {
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public void run() {
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ContentValues values = new ContentValues();
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values.put(NoteColumns.GTASK_ID, "");
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values.put(NoteColumns.SYNC_ID, 0);
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getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null);
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}
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}).start();
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}
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// 获取同步账户名称
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public static String getSyncAccountName(Context context) {
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SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
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Context.MODE_PRIVATE);
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return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
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}
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// 设置最后同步时间
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public static void setLastSyncTime(Context context, long time) {
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SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
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Context.MODE_PRIVATE);
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SharedPreferences.Editor editor = settings.edit();
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editor.putLong(PREFERENCE_LAST_SYNC_TIME, time);
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editor.commit();
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}
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|
|
// 获取最后同步时间
|
|
|
public static long getLastSyncTime(Context context) {
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|
|
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
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|
|
Context.MODE_PRIVATE);
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|
|
return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0);
|
|
|
}
|
|
|
|
|
|
// 内部类，用于接收同步服务的广播并更新界面
|
|
|
private class GTaskReceiver extends BroadcastReceiver {
|
|
|
@Override
|
|
|
public void onReceive(Context context, Intent intent) {
|
|
|
refreshUI();
|
|
|
if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) {
|
|
|
TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
|
|
|
syncStatus.setText(intent
|
|
|
.getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG));
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// 处理选项菜单点击事件
|
|
|
public boolean onOptionsItemSelected(MenuItem item) {
|
|
|
switch (item.getItemId()) {
|
|
|
case android.R.id.home:
|
|
|
Intent intent = new Intent(this, NotesListActivity.class);
|
|
|
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
|
|
|
startActivity(intent);
|
|
|
return true;
|
|
|
default:
|
|
|
return false;
|
|
|
}
|
|
|
}
|
|
|
} |
