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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;////引入ui包
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import android.accounts.Account;//引入ui包//该类主要实现的是对背景颜色和字体大小的数据储存， 继承了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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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;//文本
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import android.content.DialogInterface;//对话
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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;//继承PreferenceActivity，主要功能为对系统配置进行自动保存以及实现用户同步的操作
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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;//按钮
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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;//引入R包
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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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public class NotesPreferenceActivity extends PreferenceActivity {//类：NotesPreferenceActivity，在小米便签中主要实现的是对背景颜色和字体大小的数据储存。
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继承了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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public static final String PREFERENCE_NAME = "notes_preferences";//NotesPreferenceActivity，在小米便签中主要实现的是对背景颜色和字体大小的数据储存。继承了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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public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name";//同步账户名
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public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time";//最后同步时间
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public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear";//设置颜色按键
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private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";//账户同步密码
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private static final String AUTHORITIES_FILTER_KEY = "authorities";//本地密码
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private PreferenceCategory mAccountCategory;
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private GTaskReceiver mReceiver;
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private Account[] mOriAccounts;
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private boolean mHasAddedAccount;
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@Override
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protected void onCreate(Bundle icicle) {//新建Activity
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super.onCreate(icicle);//执行父类创建函数
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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);//给左上角图标的左边加上一个返回的图标
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mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);//添加xml来源并显示 xml
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mReceiver = new GTaskReceiver();//根据同步账户关键码来初始化分组
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IntentFilter filter = new IntentFilter();//设置过滤项
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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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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() {//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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super.onResume();//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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// need to set sync account automatically if user has added a new
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// account
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if (mHasAddedAccount) {//代码块：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账户
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if (mOriAccounts != null && accounts.length > mOriAccounts.length) {
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for (Account accountNew : accounts) {//遍历账户
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boolean found = false;//更新账户
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for (Account accountOld : mOriAccounts) {//循环判断当前账户列表中的账户是否与新建账户名相同
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if (TextUtils.equals(accountOld.name, accountNew.name)) {//若没找到旧账户则只设置新账户为同步账户
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found = true;// 语句：更新账户
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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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refreshUI();
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}
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@Override
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protected void onDestroy() {//销毁Activity
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if (mReceiver != null) {//销毁接收器
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unregisterReceiver(mReceiver);//语句：注销接收器
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}
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super.onDestroy();//语句：执行销毁动作
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}
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private void loadAccountPreference() {//设置账户信息
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mAccountCategory.removeAll();//移除所有分组
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Preference accountPref = new Preference(this);//销毁所有的分组
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final String defaultAccount = getSyncAccountName(this);//建立首选项
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accountPref.setTitle(getString(R.string.preferences_account_title));//首选项的大小标题
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accountPref.setSummary(getString(R.string.preferences_account_summary));//类似title的副标题
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accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
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public boolean onPreferenceClick(Preference preference) {//设置首选项的大标题和小标题
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if (!GTaskSyncService.isSyncing()) {//不处于同步状态
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if (TextUtils.isEmpty(defaultAccount)) {
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// the first time to set account
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showSelectAccountAlertDialog();
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} else {//代码块：若是账户已经存在，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();//已有账户则显示确认对话框
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}
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} else {//代码块：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,//若正在同步则显示不能修改账户
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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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mAccountCategory.addPreference(accountPref);//语句：根据新建首选项编辑新的账户分组
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}
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private void loadSyncButton() {//设置同步按键和最近同步时间
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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);//获取同步按钮控件和最终同步时间的的窗口
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// set button state
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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) {//设置点击监听器
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GTaskSyncService.cancelSync(NotesPreferenceActivity.this);
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}
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});
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} else {//非同步状态下按键显示“立即同步”，设置相关监听器
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syncButton.setText(getString(R.string.preferences_button_sync_immediately));//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.setOnClickListener(new View.OnClickListener() {
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public void onClick(View v) {//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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GTaskSyncService.startSync(NotesPreferenceActivity.this);//点击行为
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}
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});
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}
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syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));//语句：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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设置按键可用还是不可用
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// set last sync time
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if (GTaskSyncService.isSyncing()) {//设置按键的可用性
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lastSyncTimeView.setText(GTaskSyncService.getProgressString());
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lastSyncTimeView.setVisibility(View.VISIBLE);
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} else {//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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long lastSyncTime = getLastSyncTime(this);
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if (lastSyncTime != 0) {//设置一些显示的内容
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lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time,//非同步时，若最近同步时间不为0则显示最近同步时间
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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 {//根据最后同步时间的信息来编辑时间显示框的文本内容和可见性
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lastSyncTimeView.setVisibility(View.GONE);//最近同步时间为空设置同步时间不可见
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}
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}
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}
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private void refreshUI() {// 函数:刷新标签界面
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loadAccountPreference();
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loadSyncButton();
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}
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private void showSelectAccountAlertDialog() {//函数：显示账户选择的对话框并进行账户的设置
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AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);//语句：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);//文本试图设置
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subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips));
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dialogBuilder.setCustomTitle(titleView);//代码块：设置标题以及子标题的内容
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dialogBuilder.setPositiveButton(null, null);
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Account[] accounts = getGoogleAccounts();//获得谷歌账户
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String defAccount = getSyncAccountName(this);
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mOriAccounts = accounts;//语句：获取同步账户信息
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mHasAddedAccount = false;
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if (accounts.length > 0) {//语句：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) {//通过循环检查账户列表
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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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dialogBuilder.setSingleChoiceItems(items, checkedItem,//语句：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());//点击则开始设置同步账户
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dialog.dismiss();//语句：取消对话框
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refreshUI();//刷新界面
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}
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});
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}
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View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null);//视图，添加新的账户
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dialogBuilder.setView(addAccountView);//语句：给新加账户对话框设置自定义样式
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final AlertDialog dialog = dialogBuilder.show();//语句：显示对话框
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addAccountView.setOnClickListener(new View.OnClickListener() {
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public void onClick(View v) {//设置监听器
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mHasAddedAccount = true;//功能描述：响应点击添加账户的请求
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函数实现：除了调用父类的onCreate，还有一些自己的个性化配置
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参数描述：
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@v 视图，包括很多设置参数
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Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");//语句：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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dialog.dismiss();
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}
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});
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}
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private void showChangeAccountConfirmAlertDialog() {//刷新标签界面
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AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);//语句：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));//语句：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);
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CharSequence[] menuItemArray = new CharSequence[] {//代码块：设置对话框的自定义标题
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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) {//语句：进入账户选择对话框
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showSelectAccountAlertDialog();//显示账户选择提示对话框
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} else if (which == 1) {//删除同步账户
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removeSyncAccount();//语句：删除账户并且跟新便签界面
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refreshUI();
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}
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}
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});
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dialogBuilder.show();//语句：显示对话框
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}
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private Account[] getGoogleAccounts() {//函数：获取谷歌账户，可通过账户管理器直接获取
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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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private void setSyncAccount(String account) {//函数：设置同步账户
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if (!getSyncAccountName(this).equals(account)) {//代码块：如果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();//编辑共享首选项
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if (account != null) {//语句：编辑共享的首选项
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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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// clean up last sync time
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setLastSyncTime(this, 0);// 语句：将最后同步时间清零
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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() {//新线程的创建
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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();//代码块：重置当地同步任务的信息
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Toast.makeText(NotesPreferenceActivity.this,//设置一个toast提示信息，提示用户成功设置同步
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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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private void removeSyncAccount() {//函数：删除同步账户
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SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);//SharedPreferences是以键值对的形式存储数据的，其使用非常简单，能够轻松的存放数据和读取数据
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SharedPreferences.Editor editor = settings.edit();//语句：设置共享首选项
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if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) {//代码块：假如当前首选项中有账户就删除
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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)) {//代码块：删除当前首选项中有账户时间
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|
|
editor.remove(PREFERENCE_LAST_SYNC_TIME);
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}
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|
editor.commit();
|
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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() {//新线程
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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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|
|
}).start();
|
|
|
}
|
|
|
|
|
|
public static String getSyncAccountName(Context context) {//函数：获取同步账户名称
|
|
|
通过共享的首选项里的信息直接获取
|
|
|
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,//获取同步账户名称
|
|
|
Context.MODE_PRIVATE);
|
|
|
return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
|
|
|
}
|
|
|
|
|
|
public static void setLastSyncTime(Context context, long time) {//设置最终同步的时间
|
|
|
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
|
|
|
Context.MODE_PRIVATE);
|
|
|
SharedPreferences.Editor editor = settings.edit();//语句：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();//语句：编辑最终同步时间并提交更新
|
|
|
}
|
|
|
|
|
|
public static long getLastSyncTime(Context context) {//函数：获取最终同步时间
|
|
|
通过共享的首选项里的信息直接获取
|
|
|
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,//通过共享，获取时间
|
|
|
Context.MODE_PRIVATE);
|
|
|
return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0);
|
|
|
}
|
|
|
|
|
|
private class GTaskReceiver extends BroadcastReceiver {//函数：接受同步信息
|
|
|
|
|
|
@Override
|
|
|
public void onReceive(Context context, Intent intent) //功能描述：响应接收广播的情况
|
|
|
函数实现：刷新界面，判断是否同步状态下
|
|
|
参数描述：
|
|
|
@intent携带了活动的数据，
|
|
|
@context是有关的内容
|
|
|
refreshUI();
|
|
|
if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) {// 代码块：获取随广播而来的Intent中的同步服务的数据
|
|
|
TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview);//通过获取的数据在设置系统的状态
|
|
|
syncStatus.setText(intent
|
|
|
.getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG));
|
|
|
}
|
|
|
|
|
|
}
|
|
|
}
|
|
|
|
|
|
public boolean onOptionsItemSelected(MenuItem item) {//函数：处理菜单的选项
|
|
|
switch (item.getItemId()) {//代码块：根据选项的id选择，这里只有一个主页
|
|
|
case android.R.id.home://返回主界面
|
|
|
Intent intent = new Intent(this, NotesListActivity.class);
|
|
|
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
|
|
|
startActivity(intent);//创建活动
|
|
|
return true;
|
|
|
default://代码块：在主页情况下在创建连接组件intent，发出清空的信号并开始一个相应的activity
|
|
|
return false;
|
|
|
}
|
|
|
}
|
|
|
}
|
