/* * 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; /** * 笔记应用的设置活动，用于管理同步账户和偏好设置 * 继承自PreferenceActivity，提供Google任务同步功能配置 */ public class NotesPreferenceActivity extends PreferenceActivity { // 偏好设置文件名 public static final String PREFERENCE_NAME = "notes_preferences"; // 同步账户名称的键 public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name"; // 最后同步时间的键 public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time"; // 背景颜色设置的键 public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear"; // 同步账户分类的键 private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key"; // 账户权限过滤器键 private static final String AUTHORITIES_FILTER_KEY = "authorities"; private PreferenceCategory mAccountCategory; // 账户设置分类 private GTaskReceiver mReceiver; // 同步服务广播接收器 private Account[] mOriAccounts; // 原始账户列表 private boolean mHasAddedAccount; // 标记是否添加了新账户 /** * Activity创建时的初始化方法 */ @Override protected void onCreate(Bundle icicle) { super.onCreate(icicle); // 在ActionBar中显示返回按钮 getActionBar().setDisplayHomeAsUpEnabled(true); // 从XML资源加载偏好设置 addPreferencesFromResource(R.xml.preferences); // 查找账户设置分类 mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY); // 创建广播接收器监听同步状态变化 mReceiver = new GTaskReceiver(); IntentFilter filter = new IntentFilter(); filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME); registerReceiver(mReceiver, filter); mOriAccounts = null; // 加载设置页面的自定义头部布局 View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null); getListView().addHeaderView(header, null, true); } /** * Activity恢复时调用，处理账户变化 */ @Override protected void onResume() { super.onResume(); // 如果用户添加了新账户，自动设置同步账户 if (mHasAddedAccount) { Account[] accounts = getGoogleAccounts(); // 比较新旧账户列表，找到新添加的账户 if (mOriAccounts != null && accounts.length > mOriAccounts.length) { for (Account accountNew : accounts) { boolean found = false; for (Account accountOld : mOriAccounts) { if (TextUtils.equals(accountOld.name, accountNew.name)) { found = true; break; } } if (!found) { // 设置新账户为同步账户 setSyncAccount(accountNew.name); break; } } } } // 刷新界面显示 refreshUI(); } /** * Activity销毁时清理资源 */ @Override protected void onDestroy() { if (mReceiver != null) { unregisterReceiver(mReceiver); } super.onDestroy(); } /** * 加载账户设置项 */ private void loadAccountPreference() { mAccountCategory.removeAll(); // 清空现有设置项 Preference accountPref = new Preference(this); final String defaultAccount = getSyncAccountName(this); accountPref.setTitle(getString(R.string.preferences_account_title)); accountPref.setSummary(getString(R.string.preferences_account_summary)); accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() { public boolean onPreferenceClick(Preference preference) { // 检查是否正在同步，同步过程中不允许修改账户 if (!GTaskSyncService.isSyncing()) { if (TextUtils.isEmpty(defaultAccount)) { // 首次设置账户，显示选择账户对话框 showSelectAccountAlertDialog(); } else { // 已设置过账户，显示确认对话框 showChangeAccountConfirmAlertDialog(); } } else { Toast.makeText(NotesPreferenceActivity.this, R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT) .show(); } return true; } }); mAccountCategory.addPreference(accountPref); } /** * 加载同步按钮状态 */ private void loadSyncButton() { Button syncButton = (Button) findViewById(R.id.preference_sync_button); TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview); // 根据同步状态设置按钮文本和点击事件 if (GTaskSyncService.isSyncing()) { syncButton.setText(getString(R.string.preferences_button_sync_cancel)); syncButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { GTaskSyncService.cancelSync(NotesPreferenceActivity.this); } }); } else { syncButton.setText(getString(R.string.preferences_button_sync_immediately)); syncButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { GTaskSyncService.startSync(NotesPreferenceActivity.this); } }); } // 只有设置了同步账户才能启用同步按钮 syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this))); // 设置最后同步时间显示 if (GTaskSyncService.isSyncing()) { // 显示同步进度 lastSyncTimeView.setText(GTaskSyncService.getProgressString()); lastSyncTimeView.setVisibility(View.VISIBLE); } else { long lastSyncTime = getLastSyncTime(this); if (lastSyncTime != 0) { // 格式化显示最后同步时间 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 { // 从未同步过，隐藏时间显示 lastSyncTimeView.setVisibility(View.GONE); } } } /** * 刷新整个界面 */ private void refreshUI() { loadAccountPreference(); loadSyncButton(); } /** * 显示选择账户对话框 */ private void showSelectAccountAlertDialog() { AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this); // 设置自定义标题布局 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)); dialogBuilder.setCustomTitle(titleView); dialogBuilder.setPositiveButton(null, null); // 不显示确定按钮 Account[] accounts = getGoogleAccounts(); String defAccount = getSyncAccountName(this); mOriAccounts = accounts; // 保存当前账户列表 mHasAddedAccount = false; // 重置添加账户标记 if (accounts.length > 0) { // 创建账户选择列表 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; // 标记当前选中的账户 } items[index++] = account.name; } dialogBuilder.setSingleChoiceItems(items, checkedItem, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { // 用户选择账户后设置同步账户 setSyncAccount(itemMapping[which].toString()); dialog.dismiss(); refreshUI(); // 刷新界面 } }); } // 添加"添加账户"选项 View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null); dialogBuilder.setView(addAccountView); final AlertDialog dialog = dialogBuilder.show(); addAccountView.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { mHasAddedAccount = true; // 标记正在添加账户 // 启动系统添加账户界面 Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS"); intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] { "gmail-ls" // 限制只显示Gmail账户 }); startActivityForResult(intent, -1); dialog.dismiss(); } }); } /** * 显示更改账户确认对话框 */ private void showChangeAccountConfirmAlertDialog() { AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this); 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))); // 显示当前账户名 TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle); subtitleTextView.setText(getString(R.string.preferences_dialog_change_account_warn_msg)); dialogBuilder.setCustomTitle(titleView); // 提供三个操作选项：更改账户、移除账户、取消 CharSequence[] menuItemArray = new CharSequence[] { getString(R.string.preferences_menu_change_account), getString(R.string.preferences_menu_remove_account), getString(R.string.preferences_menu_cancel) }; dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { if (which == 0) { // 更改账户 showSelectAccountAlertDialog(); } else if (which == 1) { // 移除账户 removeSyncAccount(); refreshUI(); } // which == 2 取消操作，不做任何事 } }); dialogBuilder.show(); } /** * 获取设备上的Google账户列表 */ private Account[] getGoogleAccounts() { AccountManager accountManager = AccountManager.get(this); return accountManager.getAccountsByType("com.google"); // Google账户类型 } /** * 设置同步账户 */ private void setSyncAccount(String account) { // 只有当账户发生变化时才更新 if (!getSyncAccountName(this).equals(account)) { SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE); SharedPreferences.Editor editor = settings.edit(); if (account != null) { editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, account); } else { editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, ""); } editor.commit(); // 重置最后同步时间 setLastSyncTime(this, 0); // 在新线程中清理本地同步信息 new Thread(new Runnable() { public void run() { ContentValues values = new ContentValues(); values.put(NoteColumns.GTASK_ID, ""); // 清空任务ID values.put(NoteColumns.SYNC_ID, 0); // 重置同步ID getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null); } }).start(); Toast.makeText(NotesPreferenceActivity.this, getString(R.string.preferences_toast_success_set_accout, account), Toast.LENGTH_SHORT).show(); } } /** * 移除同步账户 */ private void removeSyncAccount() { SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE); SharedPreferences.Editor editor = settings.edit(); // 移除账户相关设置 if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) { editor.remove(PREFERENCE_SYNC_ACCOUNT_NAME); } if (settings.contains(PREFERENCE_LAST_SYNC_TIME)) { editor.remove(PREFERENCE_LAST_SYNC_TIME); } editor.commit(); // 在新线程中清理本地同步信息 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(); } /** * 静态方法：获取当前同步账户名称 */ public static String getSyncAccountName(Context context) { SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE); return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, ""); } /** * 静态方法：设置最后同步时间 */ public static void setLastSyncTime(Context context, long time) { SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE); SharedPreferences.Editor editor = settings.edit(); editor.putLong(PREFERENCE_LAST_SYNC_TIME, time); editor.commit(); } /** * 静态方法：获取最后同步时间 */ public static long getLastSyncTime(Context context) { SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE); return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0); } /** * 同步服务广播接收器，用于监听同步状态变化 */ private class GTaskReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { refreshUI(); // 收到广播后刷新界面 if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) { // 更新同步进度显示 TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview); syncStatus.setText(intent .getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG)); } } } /** * 选项菜单项选择处理 */ public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: // 点击返回按钮，返回到笔记列表 Intent intent = new Intent(this, NotesListActivity.class); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); startActivity(intent); return true; default: return false; } } }