diff --git a/NotesPreferenceActivity.java b/NotesPreferenceActivity.java new file mode 100644 index 0000000..546e6a9 --- /dev/null +++ b/NotesPreferenceActivity.java @@ -0,0 +1,266 @@ +/* + * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) + * + * 根据Apache License, Version 2.0（以下简称“许可证”）授权； + * 您可能不会使用此文件，除非遵守许可证。 + * 您可以在以下网址获得许可证的副本： + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * 除非适用法律要求或书面同意，否则按照许可证分发的软件 + * 按“原样”分发，不附带任何明示或暗示的保证或条件。 + * 请参阅控制权限和许可证下的限制的具体语言的许可证。 + */ + +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; + +// NotesPreferenceActivity 是一个用于设置便签应用偏好的 Activity。 +public class NotesPreferenceActivity extends PreferenceActivity { + // 偏好设置文件的名称。 + 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"; + // 设置背景颜色的键。 + public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear"; + // 同步账户的键。 + private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key"; + // 权限过滤键。 + private static final String AUTHORITIES_FILTER_KEY = "authorities"; + + private PreferenceCategory mAccountCategory; // 账户类别的 PreferenceCategory。 + private GTaskReceiver mReceiver; // 用于接收 GTask 同步状态的 BroadcastReceiver。 + private Account[] mOriAccounts; // 原始账户数组。 + private boolean mHasAddedAccount; // 是否添加了账户。 + + @Override + protected void onCreate(Bundle icicle) { + super.onCreate(icicle); + + // 使用应用图标作为导航。 + getActionBar().setDisplayHomeAsUpEnabled(true); + + // 从 XML 文件中添加偏好设置。 + addPreferencesFromResource(R.xml.preferences); + mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY); + mReceiver = new GTaskReceiver(); + IntentFilter filter = new IntentFilter(); + filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME); + registerReceiver(mReceiver, filter); + + mOriAccounts = null; + // 从布局文件中添加设置头部。 + View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null); + getListView().addHeaderView(header, null, true); + } + + @Override + protected void onResume() { + super.onResume(); + + // 自动设置同步账户，如果用户添加了新账户。 + if (mHasAddedAccount) { + Account[] accounts = getGoogleAccounts(); + 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) { + setSyncAccount(accountNew.name); + break; + } + } + } + } + + refreshUI(); + } + + @Override + protected void onDestroy() { + if (mReceiver != null) { + unregisterReceiver(mReceiver); + } + super.onDestroy(); + } + + // 加载账户偏好设置。 + private void loadAccountPreference() { + mAccountCategory.removeAll(); + + 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) { + if (!GTaskSyncService.isSyncing()) { + if (TextUtils.isEmpty(defaultAccount)) { + // 第一次设置账户。 + showSelectAccountAlertDialog(); + } else { + // 如果已经设置了账户，需要提示用户风险。 + 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。 + private void loadSyncButton() { + Button syncButton = (Button) findViewById(R.id.preference_sync_button); + TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview); + + // 设置按钮状态。 + 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); + } + }); + } + syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this))); + + // 设置最后同步时间。 + if (GTaskSyncService.isSyncing()) { + lastSyncTimeView.setText(GTaskSyncService.getProgressString()); + lastSyncTimeView.setVisibility(View.VISIBLE); + } else { + 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); + } else { + lastSyncTimeView.setVisibility(View.GONE); + } + } + } + + // 刷新 UI。 + private void refreshUI() { + loadAccountPreference(); + loadSyncButton(); + } + + // 显示选择账户的对话框。 + private void showSelectAccountAlertDialog() { + 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_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); + + Account[] accounts = getGoogleAccounts(); + String defAccount = getSyncAccountName(this); + + mOriAccounts = accounts; + mHasAddedAccount = false; + + if (accounts.length > 0) { + 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; + } + items[index++] = account.name; + } + dialogBuilder.setSingleChoiceItems(items, checkedItem, + new DialogInterface.OnClickListener() { + public void onClick(DialogInterface dialog, int which) { + setSyncAccount(itemMapping[which].toString()); + dialog.dismiss(); + refreshUI(); + } + }); + } + + 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; + Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS"); + intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] { + "gmail-ls" + }); + 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))); + TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle); + subtitleTextView.setText(getString(R.string \ No newline at end of file