/* * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package net.micode.notes.ui; import android.accounts.Account; import android.accounts.AccountManager; import android.app.ActionBar; import android.app.AlertDialog; import android.content.BroadcastReceiver; import android.content.ContentValues; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.IntentFilter; import android.content.SharedPreferences; import android.os.Bundle; import android.preference.Preference; import android.preference.Preference.OnPreferenceClickListener; import android.preference.PreferenceActivity; import android.preference.PreferenceCategory; import android.text.TextUtils; import android.text.format.DateFormat; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; import net.micode.notes.R; import net.micode.notes.data.Notes; import net.micode.notes.data.Notes.NoteColumns; import net.micode.notes.gtask.remote.GTaskSyncService; public class NotesPreferenceActivity extends PreferenceActivity {//实现对背景颜色和字体大小的数据储存 public static final String PREFERENCE_NAME = "notes_preferences";//优先名 public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name";//同步账号 public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time";//同步时间 public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear";//背景颜色设置按键 private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";//账户同步密码 private static final String AUTHORITIES_FILTER_KEY = "authorities";//本地密码 private PreferenceCategory mAccountCategory;//账户分组 private GTaskReceiver mReceiver;//同步任务接收器 private Account[] mOriAccounts;//账户 private boolean mHasAddedAccount;//账户的hash标记 @Override protected void onCreate(Bundle icicle) {//创建一个activity，在函数里完成所有的正常静态设置 super.onCreate(icicle);//执行父类创建函数 /* using the app icon for navigation */ getActionBar().setDisplayHomeAsUpEnabled(true);//给左上角图标的左边加上一个返回的图标 addPreferencesFromResource(R.xml.preferences);//从资源里添加布局文件 mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);//根据同步账户密码进行账户分组 mReceiver = new GTaskReceiver();//设置同步任务接收器 IntentFilter filter = new IntentFilter();//设置过滤项 filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME);// registerReceiver(mReceiver, filter); mOriAccounts = null;//初始化同步组件 View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);//从xml获取Listview getListView().addHeaderView(header, null, true);//列出所有选择 } @Override//功能描述：重启活动 protected void onResume() { super.onResume();//activity交互功能的实现，用于接受用户的输入 // need to set sync account automatically if user has added a new // account if (mHasAddedAccount) {//若用户新加了账户则自动设置同步账户 Account[] accounts = getGoogleAccounts();//获取google同步账户 if (mOriAccounts != null && accounts.length > mOriAccounts.length) {//若原账户不为空且当前账户有增加 for (Account accountNew : accounts) {//遍历账户 boolean found = false;//更新账户 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 if (TextUtils.equals(accountOld.name, accountNew.name)) { found = true; break; }//若没找到旧账户则只设置新账户为同步账户 } if (!found) {//如果当前新建账户不存在 setSyncAccount(accountNew.name);//保存该账户 break; } } } } refreshUI();//刷新标签界面 } @Override//功能描述：销毁活动 protected void onDestroy() {//销毁Activity if (mReceiver != null) { unregisterReceiver(mReceiver);//取消广播器的监听 }//销毁接收器 super.onDestroy();//执行销毁动作 } private void loadAccountPreference() {//重新设置账户信息 mAccountCategory.removeAll();//销毁所有的分组 Preference accountPref = new Preference(this);//建立首选项 final String defaultAccount = getSyncAccountName(this);//默认账户为当前账户 accountPref.setTitle(getString(R.string.preferences_account_title)); accountPref.setSummary(getString(R.string.preferences_account_summary)); accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {//设置首选项的大标题和小标题 public boolean onPreferenceClick(Preference preference) {//建立监听器 if (!GTaskSyncService.isSyncing()) {//不在同步状态下，如果没有默认的账户，显示选择账户的对话框，否则显示需要改变账户的对话框 if (TextUtils.isEmpty(defaultAccount)) {//第一次设置账户 // the first time to set account showSelectAccountAlertDialog();//第一次建立账户，显示选择账户提示对话框 } else { // if the account has already been set, we need to promp // user about the risk showChangeAccountConfirmAlertDialog();//展示改变账户确认提醒对话框 } } else {//若在没有同步的情况下，则在toast中显示不能修改 Toast.makeText(NotesPreferenceActivity.this, R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT) .show();//正在同步，不能切换同步的账号 } return true; } }); mAccountCategory.addPreference(accountPref);//根据新建首选项编辑新的账户分组 } private void loadSyncButton() {//设置同步按键和最近同步时间 Button syncButton = (Button) findViewById(R.id.preference_sync_button);//配置资源，设置一个button 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 // set button state if (GTaskSyncService.isSyncing()) {//如果在同步状态下，则按钮设置为“取消同步” syncButton.setText(getString(R.string.preferences_button_sync_cancel)); syncButton.setOnClickListener(new View.OnClickListener() {//设置点击监听器 public void onClick(View v) {//设置取消同步的响应方法 GTaskSyncService.cancelSync(NotesPreferenceActivity.this); } }); } 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 syncButton.setText(getString(R.string.preferences_button_sync_immediately)); syncButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) {//点击行为 GTaskSyncService.startSync(NotesPreferenceActivity.this);//开始同步 } }); } syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));//如果没有账户，则不可选“立即同步”的按键 // set last sync time设置上次同步时间 if (GTaskSyncService.isSyncing()) {//如果正在同步则读取正在同步的进度，否则显示最后同步的时间 lastSyncTimeView.setText(GTaskSyncService.getProgressString()); lastSyncTimeView.setVisibility(View.VISIBLE); } else {//若是非同步情况 long lastSyncTime = getLastSyncTime(this); if (lastSyncTime != 0) {//若最近同步时间不为0则显示最近同步时间 lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time, DateFormat.format(getString(R.string.preferences_last_sync_time_format), lastSyncTime))); lastSyncTimeView.setVisibility(View.VISIBLE); } else {//若时间为空直接设置为不可见状态 lastSyncTimeView.setVisibility(View.GONE); } } }//根据当前同步服务器设置时间显示框的文本以及可见性 private void refreshUI() {//刷新标签界面 loadAccountPreference(); loadSyncButton();//加载“保存”按钮 } private void showSelectAccountAlertDialog() {//显示账户选择的对话框并进行账户的设置 AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);//创建一个新的对话框 View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null); TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title); titleTextView.setText(getString(R.string.preferences_dialog_select_account_title)); TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);//文本视图设置 subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips)); dialogBuilder.setCustomTitle(titleView);//设置标题以及子标题的内容 dialogBuilder.setPositiveButton(null, null);//不设置“确定”的按钮 Account[] accounts = getGoogleAccounts();//获取当前谷歌账户 String defAccount = getSyncAccountName(this);//获得同步账户 mOriAccounts = accounts; mHasAddedAccount = false;//获取同步账户信息 if (accounts.length > 0) {//如果有谷歌账户，则显示所有账户的名称，并设置为选项 CharSequence[] items = new CharSequence[accounts.length]; final CharSequence[] itemMapping = items; int checkedItem = -1; int index = 0; for (Account account : accounts) {//通过循环检查账户列表 if (TextUtils.equals(account.name, defAccount)) { checkedItem = index; }//在账户列表中查询到所需账户 items[index++] = account.name; } dialogBuilder.setSingleChoiceItems(items, checkedItem,//在对话框建立一个单选的复选框 new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) {//响应对话框的点击 setSyncAccount(itemMapping[which].toString());//点击则开始设置同步账户 dialog.dismiss();//取消对话框 refreshUI();//刷新界面 } }); }//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 View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null);//添加新的账户 dialogBuilder.setView(addAccountView);//给新加账户对话框设置自定义样式 final AlertDialog dialog = dialogBuilder.show();//显示对话框 addAccountView.setOnClickListener(new View.OnClickListener() {//设置监听器 public void onClick(View v) {//响应点击添加账户的请求 mHasAddedAccount = true;//将新加账户的hash置为true Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");//建立网络组件 intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] { "gmail-ls" }); startActivityForResult(intent, -1);//跳回上一个选项 dialog.dismiss(); } }); } private void showChangeAccountConfirmAlertDialog() {//刷新标签界面 AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);//创建一个新的对话框 View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null); TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title); titleTextView.setText(getString(R.string.preferences_dialog_change_account_title, getSyncAccountName(this))); TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle); subtitleTextView.setText(getString(R.string.preferences_dialog_change_account_warn_msg)); dialogBuilder.setCustomTitle(titleView);//根据同步修改的账户信息设置标题以及子标题的内容 CharSequence[] menuItemArray = new CharSequence[] { getString(R.string.preferences_menu_change_account), getString(R.string.preferences_menu_remove_account), getString(R.string.preferences_menu_cancel) };//设置对话框的自定义标题 dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() {//定义一些标记字符串 public void onClick(DialogInterface dialog, int which) {//响应对话框的点击 if (which == 0) {//如果是改变同步账户，则显示可选择的账户 showSelectAccountAlertDialog(); } else if (which == 1) { removeSyncAccount(); refreshUI(); }//删除同步账户 } }); dialogBuilder.show();//显示对话框 } private Account[] getGoogleAccounts() {//获取谷歌账户 AccountManager accountManager = AccountManager.get(this); return accountManager.getAccountsByType("com.google"); } private void setSyncAccount(String account) {//设置同步账户 if (!getSyncAccountName(this).equals(account)) {//如果该账号不在同步账号列表中 SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE); SharedPreferences.Editor editor = settings.edit();//编辑共享首选项 if (account != null) {//如果账户不为空 editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, account); } else { editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, ""); }//将该账号加入到首选项中 editor.commit();//提交修改的数据 // clean up last sync time setLastSyncTime(this, 0);//将最后同步时间清零 // clean up local gtask related info new Thread(new Runnable() {//新线程的创建 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); }//清除本地的gtask关联的信息 }).start();//重置当地同步任务的信息 Toast.makeText(NotesPreferenceActivity.this,//设置一个toast提示信息，提示用户成功设置同步 getString(R.string.preferences_toast_success_set_accout, account), Toast.LENGTH_SHORT).show();//将toast的文本信息置为“设置账户成功”并显示出来 } } private void removeSyncAccount() {//删除同步账户 SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);//存放数据和读取数据 SharedPreferences.Editor editor = settings.edit();//设置共享首选项 if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) { editor.remove(PREFERENCE_SYNC_ACCOUNT_NAME); }//若当前首选项中有账户就删除 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() {//新线程的创建 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); }//清除本地的gtask关联的信息，将一些参数设置为0或NULL }).start(); } public static String getSyncAccountName(Context context) { SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE); return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, ""); }//获取同步账户名称 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 }//设置最终同步的时间 public static long getLastSyncTime(Context context) {//获取最终同步时间 SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);//通过共享，获取时间 return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0); } private class GTaskReceiver extends BroadcastReceiver {//接受同步信息 @Override public void onReceive(Context context, Intent intent) {//响应接收广播的情况 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));////通过获取的数据在设置系统的状态 }//获取随广播而来的Intent中的同步服务的数据 } } public boolean onOptionsItemSelected(MenuItem item) {//处理菜单的选项 switch (item.getItemId()) {//根据选项的id选择 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://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; } } }