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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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/*
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此类功能为，在小米便签中实现对背景颜色和字体大小的数据储存，继承了
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PreferenceActivity主要功能为对系统信息和配置进行自动保存的Activity。
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*/
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public class NotesPreferenceActivity extends PreferenceActivity {
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public static final String PREFERENCE_NAME = "notes_preferences";//优先名
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public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name";//同步账号
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public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time";同步时间
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public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear";
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private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";//同步密码
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private static final String AUTHORITIES_FILTER_KEY = "authorities";//本地密码
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private PreferenceCategory mAccountCategory;//账户分组
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private GTaskReceiver mReceiver;//同步任务接收器
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private Account[] mOriAccounts;//账户
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private boolean mHasAddedAccount;账户的hash标记
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@Override
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/*
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函数功能：创建一个activity，在函数里要完成所有的正常静态设置。
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参数：Bundle icicle存放了activity当前的状态。
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*/
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protected void onCreate(Bundle icicle) {
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super.onCreate(icicle);//先执行父类的创建函数
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/* using the app icon for navigation */
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getActionBar().setDisplayHomeAsUpEnabled(true);//给左上角图标的左边加上一个返回的图标
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addPreferencesFromResource(R.xml.preferences);//添加xml来源并显示xml
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mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);//根据同步账户关键码来初始化分组
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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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//初始化同步组件
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mOriAccounts = null;//mOriAccounts赋值为null
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View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);//获取listview，ListView用于列出所有选择
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getListView().addHeaderView(header, null, true);//在listview组件上方添加其他组件
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}
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@Override
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/*
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函数功能：activity交互功能的实现，用于接受用户的输入
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*/
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protected void onResume() {
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super.onResume();//先执行父类的交互实现
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// need to set sync account automatically if user has added a new
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// account
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if (mHasAddedAccount) {//若用户新加了账户则自动设置同步账户
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Account[] accounts = getGoogleAccounts();//获取google同步账户
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if (mOriAccounts != null && accounts.length > mOriAccounts.length) {//若原账户不为空且当前账户有增加
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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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//更新账户
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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);//若是没有找到旧的账户，那么同步账号中就只添加新账户
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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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refreshUI();//刷新标签页面
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}
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@Override
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/*
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函数功能：销毁一个activity
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*/
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protected void onDestroy() {
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if (mReceiver != null) {//如果mReceiver不为空
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unregisterReceiver(mReceiver);//注销接收器
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}
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super.onDestroy();//执行父类的销毁动作
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}
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/*
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函数功能：重新设置账户信息
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*/
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private void loadAccountPreference() {
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mAccountCategory.removeAll();//销毁所有的分组
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Preference accountPref = new Preference(this);//建立首选项
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final String defaultAccount = getSyncAccountName(this);
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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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//设置首选项的大标题和小标题
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accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
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public boolean onPreferenceClick(Preference preference) {//建立监听器
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if (!GTaskSyncService.isSyncing()) {
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if (TextUtils.isEmpty(defaultAccount)) {//若是第一次建立账户显示选择账户提示对话框
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// the first time to set account
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showSelectAccountAlertDialog();
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} else {
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//若是已经建立则显示修改对话框并进行修改操作
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// if the account has already been set, we need to promp
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// user about the risk
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showChangeAccountConfirmAlertDialog();
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}
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} else {
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//若在没有同步的情况下，则在toast中显示不能修改
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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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//根据新建首选项编辑新的账户分组
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mAccountCategory.addPreference(accountPref);
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}
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/*
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函数功能：设置按键的状态和最后同步的时间
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*/
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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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//获取同步按钮控件和最终同步时间的窗口
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// set button state
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//设置按钮的状态
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if (GTaskSyncService.isSyncing()) {//若是在同步状态下
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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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//设置按钮显示的文本为“取消同步”以及监听器
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} else {//若是不同步则设置按钮显示的文本为“立即同步”以及对应监听器
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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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syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));//设置按键可用还是不可用
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// set last sync time
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//设置最终同步时间
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if (GTaskSyncService.isSyncing()) {//若是再同步情况下
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lastSyncTimeView.setText(GTaskSyncService.getProgressString());
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lastSyncTimeView.setVisibility(View.VISIBLE);
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//根据当前同步服务器设置时间显示框的文本以及可见性
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} else {//若是非同步情况
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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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//则根据最后同步数据的信息来编辑时间显示框的文本内容和可见性
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} else {//若时间为空直接设置为不可见状态
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lastSyncTimeView.setVisibility(View.GONE);
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}
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}
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}
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/*
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函数功能：刷新标签界面（调用上文设置账号和设置按键两个函数来实现）
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*/
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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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/*
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函数功能：显示账户选择的对话框并进行账户的设置
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*/
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private void showSelectAccountAlertDialog() {
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AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);//创建一个新的对话框
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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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//设置标题以及子标题的内容
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dialogBuilder.setCustomTitle(titleView);
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dialogBuilder.setPositiveButton(null, null);
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//设置对话框的自定义标题，建立一个YES的按钮
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Account[] accounts = getGoogleAccounts();
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String defAccount = getSyncAccountName(this);
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//获取同步账户信息
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mOriAccounts = accounts;
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mHasAddedAccount = false;
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if (accounts.length > 0) {//若账户不为空
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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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//在账户列表中查询到所需账户
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}
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items[index++] = account.name;
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}
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dialogBuilder.setSingleChoiceItems(items, checkedItem,//在对话框建立一个单选的复选框
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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();//取消对话框
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refreshUI();
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}
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//设置点击后执行的事件，包括检录新同步账户和刷新标签界面
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});
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//建立对话框网络版的监听器
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}
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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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//给新加账户对话框设置自定义样式
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final AlertDialog dialog = dialogBuilder.show();//显示对话框
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addAccountView.setOnClickListener(new View.OnClickListener() {
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public void onClick(View v) {
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mHasAddedAccount = true;//将新加账户的hash置true
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Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");//建立网络建立组件
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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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//跳回上一个选项
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dialog.dismiss();
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}
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});
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//建立新加账户对话框的监听器
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}
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/*
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函数功能：显示账户选择对话框和相关账户操作
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*/
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private void showChangeAccountConfirmAlertDialog() {
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AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);//创建一个新的对话框
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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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//根据同步修改的账户信息设置标题以及子标题的内容
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dialogBuilder.setCustomTitle(titleView);//设置对话框的自定义标题
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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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};//定义一些标记字符串
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dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() {//设置对话框要显示的一个list,用于显示几个命令时，即change，remove，cancel
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public void onClick(DialogInterface dialog, int which) {//按键功能由which来决定
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if (which == 0) {
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//进入账户选择对话框
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showSelectAccountAlertDialog();
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} else if (which == 1) {
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//删除账户且更新便签界面
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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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dialogBuilder.show();//显示对话框
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}
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/*
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函数功能：获取谷歌账户（通过账户管理器直接获取）
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*/
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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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/*
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函数功能：设置同步账户
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*/
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private void setSyncAccount(String account) {
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if (!getSyncAccountName(this).equals(account)) {//假如该账号不在同步账号列表中
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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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//编辑共享的首选项
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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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//将该帐号加入到首选项中
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editor.commit();//提交修改的数据
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// clean up last sync time
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setLastSyncTime(this, 0);//将最后同步时间请零
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// clean up local gtask related info
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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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//重置当地同步任务的信息
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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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//将toast的文本信息置为“设置账户成功”并显示出来
|
|
|
}
|
|
|
}
|
|
|
/*
|
|
|
函数功能：删除同步账户
|
|
|
*/
|
|
|
private void removeSyncAccount() {
|
|
|
SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
|
|
|
SharedPreferences.Editor editor = settings.edit();
|
|
|
//设置共享首选项
|
|
|
if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) {//若当前首选项中有账户就删除
|
|
|
editor.remove(PREFERENCE_SYNC_ACCOUNT_NAME);
|
|
|
}
|
|
|
if (settings.contains(PREFERENCE_LAST_SYNC_TIME)) {
|
|
|
editor.remove(PREFERENCE_LAST_SYNC_TIME);//删除当前首选项中有账户时间
|
|
|
}
|
|
|
editor.commit();//提交更新后的数据
|
|
|
|
|
|
// clean up local gtask related info
|
|
|
new Thread(new Runnable() {
|
|
|
public void run() {
|
|
|
ContentValues values = new ContentValues();
|
|
|
values.put(NoteColumns.GTASK_ID, "");
|
|
|
values.put(NoteColumns.SYNC_ID, 0);
|
|
|
getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null);
|
|
|
}
|
|
|
}).start();
|
|
|
//重置当地同步任务的信息
|
|
|
}
|
|
|
/*
|
|
|
函数功能：获取同步账户名称（通过共享的首选项里的信息直接获取）
|
|
|
*/
|
|
|
public static String getSyncAccountName(Context context) {
|
|
|
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
|
|
|
Context.MODE_PRIVATE);
|
|
|
return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
|
|
|
}
|
|
|
/*
|
|
|
函数功能：设置最终同步时间
|
|
|
*/
|
|
|
public static void setLastSyncTime(Context context, long time) {
|
|
|
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
|
|
|
Context.MODE_PRIVATE);
|
|
|
SharedPreferences.Editor editor = settings.edit();
|
|
|
//从共享首选项中找到相关账户并获取其编辑器
|
|
|
editor.putLong(PREFERENCE_LAST_SYNC_TIME, time);
|
|
|
editor.commit();
|
|
|
//编辑最终同步时间并提交更新
|
|
|
}
|
|
|
/*
|
|
|
函数功能：获取最终同步时间（通过共享的首选项里的信息直接获取）
|
|
|
*/
|
|
|
public static long getLastSyncTime(Context context) {
|
|
|
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
|
|
|
Context.MODE_PRIVATE);
|
|
|
return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0);
|
|
|
}
|
|
|
/*
|
|
|
函数功能：接受同步信息（继承BroadcastReceiver）
|
|
|
*/
|
|
|
private class GTaskReceiver extends BroadcastReceiver {
|
|
|
|
|
|
@Override
|
|
|
public void onReceive(Context context, Intent intent) {
|
|
|
refreshUI();
|
|
|
if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) {
|
|
|
//获取随广播而来的Internet中的同步服务的数据
|
|
|
TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
|
|
|
syncStatus.setText(intent
|
|
|
.getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG));
|
|
|
//通过获取的数据设置系统的状态
|
|
|
}
|
|
|
|
|
|
}
|
|
|
}
|
|
|
/*
|
|
|
函数功能：处理菜单的选项
|
|
|
参数：MenuItem菜单选项
|
|
|
*/
|
|
|
public boolean onOptionsItemSelected(MenuItem item) {
|
|
|
switch (item.getItemId()) {//根据选项的id选择，这里只有一个主页
|
|
|
case android.R.id.home:
|
|
|
Intent intent = new Intent(this, NotesListActivity.class);
|
|
|
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
|
|
|
startActivity(intent);
|
|
|
return true;
|
|
|
//在主页情况下创建连接组件intent，发出清空的信号并开始一个相应的activity
|
|
|
default:
|
|
|
return false;
|
|
|
}
|
|
|
}
|
|
|
}
|
