/* * 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; /* 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 PreferenceActivity主要功能为对系统信息和配置进行自动保存的Activity。 */ public class NotesPreferenceActivity extends PreferenceActivity { 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"; private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";//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 /* 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。 参数：Bundle icicle存放了activity当前的状态。 */ protected void onCreate(Bundle icicle) { super.onCreate(icicle);//先执行父类的创建函数 /* 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);//添加xml来源并显示xml mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);//根据同步账户关键码来初始化分组 mReceiver = new GTaskReceiver(); IntentFilter filter = new IntentFilter(); filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME); registerReceiver(mReceiver, filter); //初始化同步组件 mOriAccounts = null;//mOriAccounts赋值为null View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);//获取listview，ListView用于列出所有选择 getListView().addHeaderView(header, null, true);//在listview组件上方添加其他组件 } @Override /* 函数功能：activity交互功能的实现，用于接受用户的输入 */ protected void onResume() { super.onResume();//先执行父类的交互实现 // 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) { boolean found = false; for (Account accountOld : mOriAccounts) { if (TextUtils.equals(accountOld.name, accountNew.name)) { //更新账户 found = true; break; } } if (!found) { 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 break; } } } } refreshUI();//刷新标签页面 } @Override /* 函数功能：销毁一个activity */ protected void onDestroy() { if (mReceiver != null) {//如果mReceiver不为空 unregisterReceiver(mReceiver);//注销接收器 } super.onDestroy();//执行父类的销毁动作 } /* 函数功能：重新设置账户信息 */ private void loadAccountPreference() { mAccountCategory.removeAll();//销毁所有的分组 Preference accountPref = new Preference(this);//建立首选项 final String defaultAccount = getSyncAccountName(this); accountPref.setTitle(getString(R.string.preferences_account_title)); accountPref.setSummary(getString(R.string.preferences_account_summary)); //设置首选项的大标题和小标题 accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() { public boolean onPreferenceClick(Preference preference) {//建立监听器 if (!GTaskSyncService.isSyncing()) { if (TextUtils.isEmpty(defaultAccount)) {//若是第一次建立账户显示选择账户提示对话框 // the first time to set account showSelectAccountAlertDialog(); } else { //若是已经建立则显示修改对话框并进行修改操作 // if the account has already been set, we need to promp // user about the risk showChangeAccountConfirmAlertDialog(); } } 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(); } return true; } }); //根据新建首选项编辑新的账户分组 mAccountCategory.addPreference(accountPref); } /* 函数功能：设置按键的状态和最后同步的时间 */ private void loadSyncButton() { Button syncButton = (Button) findViewById(R.id.preference_sync_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窗口 // set button state //设置按钮的状态 if (GTaskSyncService.isSyncing()) {//若是在同步状态下 syncButton.setText(getString(R.string.preferences_button_sync_cancel)); syncButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { GTaskSyncService.cancelSync(NotesPreferenceActivity.this); } }); //设置按钮显示的文本为“取消同步”以及监听器 } 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) { GTaskSyncService.startSync(NotesPreferenceActivity.this); } }); } syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));//设置按键可用还是不可用 // set last sync time //设置最终同步时间 if (GTaskSyncService.isSyncing()) {//若是再同步情况下 lastSyncTimeView.setText(GTaskSyncService.getProgressString()); lastSyncTimeView.setVisibility(View.VISIBLE); //根据当前同步服务器设置时间显示框的文本以及可见性 } else {//若是非同步情况 long lastSyncTime = getLastSyncTime(this); if (lastSyncTime != 0) { lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time, DateFormat.format(getString(R.string.preferences_last_sync_time_format), lastSyncTime))); lastSyncTimeView.setVisibility(View.VISIBLE); //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 } else {//若时间为空直接设置为不可见状态 lastSyncTimeView.setVisibility(View.GONE); } } } /* 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） */ private void refreshUI() { loadAccountPreference(); loadSyncButton(); } /* 函数功能：显示账户选择的对话框并进行账户的设置 */ private void showSelectAccountAlertDialog() { 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); subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips)); //设置标题以及子标题的内容 dialogBuilder.setCustomTitle(titleView); dialogBuilder.setPositiveButton(null, null); //设置对话框的自定义标题，建立一个YES的按钮 Account[] accounts = getGoogleAccounts(); String defAccount = getSyncAccountName(this); //获取同步账户信息 mOriAccounts = accounts; mHasAddedAccount = false; if (accounts.length > 0) {//若账户不为空 CharSequence[] items = new CharSequence[accounts.length]; final CharSequence[] itemMapping = items; int checkedItem = -1; int index = 0; for (Account account : accounts) { 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) { setSyncAccount(itemMapping[which].toString()); dialog.dismiss();//取消对话框 refreshUI(); } //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 }); //建立对话框网络版的监听器 } View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null); 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() { public void onClick(View v) { mHasAddedAccount = true;//将新加账户的hash置true Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");//建立网络建立组件 intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] { "gmail-ls" }); startActivityForResult(intent, -1); //跳回上一个选项 dialog.dismiss(); } }); //建立新加账户对话框的监听器 } /* 函数功能：显示账户选择对话框和相关账户操作 */ private void showChangeAccountConfirmAlertDialog() { 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)); //根据同步修改的账户信息设置标题以及子标题的内容 dialogBuilder.setCustomTitle(titleView);//设置对话框的自定义标题 CharSequence[] menuItemArray = new CharSequence[] { getString(R.string.preferences_menu_change_account), getString(R.string.preferences_menu_remove_account), getString(R.string.preferences_menu_cancel) };//定义一些标记字符串 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 public void onClick(DialogInterface dialog, int which) {//按键功能由which来决定 if (which == 0) { //进入账户选择对话框 showSelectAccountAlertDialog(); } else if (which == 1) { //删除账户且更新便签界面 removeSyncAccount(); refreshUI(); } } }); dialogBuilder.show();//显示对话框 } /* 函数功能：获取谷歌账户（通过账户管理器直接获取） */ private Account[] getGoogleAccounts() { AccountManager accountManager = AccountManager.get(this); return accountManager.getAccountsByType("com.google"); } /* 函数功能：设置同步账户 */ private void setSyncAccount(String account) { if (!getSyncAccountName(this).equals(account)) {//假如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(); //编辑共享的首选项 if (account != null) { editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, account); } else { editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, ""); } //将该帐号加入到首选项中 editor.commit();//提交修改的数据 // clean up last sync time setLastSyncTime(this, 0);//将最后同步时间请零 // 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 Toast.makeText(NotesPreferenceActivity.this, 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 } } /* 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; } } }