/* * 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.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.appwidget.AppWidgetManager; import android.content.AsyncQueryHandler; import android.content.ContentResolver; import android.content.ContentValues; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.database.Cursor; import android.os.AsyncTask; import android.os.Bundle; import android.preference.PreferenceManager; import android.text.Editable; import android.text.TextUtils; import android.text.TextWatcher; import android.util.Log; import android.view.ActionMode; import android.view.ContextMenu; import android.view.ContextMenu.ContextMenuInfo; import android.view.Display; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.MenuItem.OnMenuItemClickListener; import android.view.MotionEvent; import android.view.View; import android.view.View.OnClickListener; import android.view.View.OnCreateContextMenuListener; import android.view.View.OnTouchListener; import android.view.inputmethod.InputMethodManager; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.AdapterView.OnItemLongClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.ListView; import android.widget.PopupMenu; 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; import net.micode.notes.model.WorkingNote; import net.micode.notes.tool.BackupUtils; import net.micode.notes.tool.DataUtils; import net.micode.notes.tool.ResourceParser; import net.micode.notes.ui.NotesListAdapter.AppWidgetAttribute; import net.micode.notes.ui.NotesListItem.NoteItemData; import net.micode.notes.widget.NoteWidgetProvider_2x; import net.micode.notes.widget.NoteWidgetProvider_4x; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.util.HashSet; /** * 笔记列表活动 - 应用的主界面 * * 【功能说明】 * 1. 显示所有笔记和文件夹的列表视图 * 2. 支持创建、编辑、删除笔记 * 3. 支持创建和管理文件夹（重命名/删除） * 4. 支持多选批量操作（删除/移动） * 5. 支持长按上下文菜单操作 * 6. 支持搜索和导出文本功能 * 7. 支持Google任务同步 * 8. 首次启动时显示使用说明便签 * 9. 支持通话记录便签显示 * 10. 支持桌面小部件更新 * * 【界面组成】 * - ListView: 显示笔记和文件夹列表 * - 底部按钮: 新建笔记 * - 标题栏: 显示当前文件夹名称 * - 多选模式: ActionMode + 下拉菜单 * * @author MiCode Open Source Community * @modified 2026-05-07 (Complete Chinese Annotation) */ public class NotesListActivity extends Activity implements OnClickListener, OnItemLongClickListener { // 异步查询令牌常量 private static final int FOLDER_NOTE_LIST_QUERY_TOKEN = 0; private static final int FOLDER_LIST_QUERY_TOKEN = 1; // 文件夹菜单项常量 private static final int MENU_FOLDER_DELETE = 0; private static final int MENU_FOLDER_VIEW = 1; private static final int MENU_FOLDER_CHANGE_NAME = 2; // SharedPreferences键名：是否已添加介绍便签 private static final String PREFERENCE_ADD_INTRODUCTION = "net.micode.notes.introduction"; /** * 列表编辑状态枚举 * NOTE_LIST: 根目录笔记列表 * SUB_FOLDER: 用户自定义文件夹内 * CALL_RECORD_FOLDER: 通话记录文件夹 */ private enum ListEditState { NOTE_LIST, SUB_FOLDER, CALL_RECORD_FOLDER } private ListEditState mState; private BackgroundQueryHandler mBackgroundQueryHandler; private NotesListAdapter mNotesListAdapter; private ListView mNotesListView; private Button mAddNewNote; private boolean mDispatch; private int mOriginY; private int mDispatchY; private TextView mTitleBar; private long mCurrentFolderId; private ContentResolver mContentResolver; private ModeCallback mModeCallBack; private static final String TAG = "NotesListActivity"; public static final int NOTES_LISTVIEW_SCROLL_RATE = 30; private NoteItemData mFocusNoteDataItem; // 数据库查询条件 private static final String NORMAL_SELECTION = NoteColumns.PARENT_ID + "=?"; private static final String ROOT_FOLDER_SELECTION = "(" + NoteColumns.TYPE + "<>" + Notes.TYPE_SYSTEM + " AND " + NoteColumns.PARENT_ID + "=?)" + " OR (" + NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER + " AND " + NoteColumns.NOTES_COUNT + ">0)"; // Activity请求码 private final static int REQUEST_CODE_OPEN_NODE = 102; private final static int REQUEST_CODE_NEW_NODE = 103; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.note_list); initResources(); setAppInfoFromRawRes(); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (resultCode == RESULT_OK && (requestCode == REQUEST_CODE_OPEN_NODE || requestCode == REQUEST_CODE_NEW_NODE)) { // 从编辑页面返回时刷新列表 mNotesListAdapter.changeCursor(null); } else { super.onActivityResult(requestCode, resultCode, data); } } /** * 首次启动时从raw资源加载使用说明并创建介绍便签 * 仅执行一次，通过SharedPreferences标记 */ private void setAppInfoFromRawRes() { SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this); if (!sp.getBoolean(PREFERENCE_ADD_INTRODUCTION, false)) { StringBuilder sb = new StringBuilder(); InputStream in = null; try { in = getResources().openRawResource(R.raw.introduction); if (in != null) { InputStreamReader isr = new InputStreamReader(in); BufferedReader br = new BufferedReader(isr); char [] buf = new char[1024]; int len = 0; while ((len = br.read(buf)) > 0) { sb.append(buf, 0, len); } } else { Log.e(TAG, "Read introduction file error"); return; } } catch (IOException e) { e.printStackTrace(); return; } finally { if(in != null) { try { in.close(); } catch (IOException e) { e.printStackTrace(); } } } WorkingNote note = WorkingNote.createEmptyNote(this, Notes.ID_ROOT_FOLDER, AppWidgetManager.INVALID_APPWIDGET_ID, Notes.TYPE_WIDGET_INVALIDE, ResourceParser.RED); note.setWorkingText(sb.toString()); if (note.saveNote()) { sp.edit().putBoolean(PREFERENCE_ADD_INTRODUCTION, true).commit(); } else { Log.e(TAG, "Save introduction note error"); return; } } } @Override protected void onStart() { super.onStart(); startAsyncNotesListQuery(); } /** * 初始化UI组件和资源 * 包括ListView、适配器、按钮等 */ private void initResources() { mContentResolver = this.getContentResolver(); mBackgroundQueryHandler = new BackgroundQueryHandler(this.getContentResolver()); mCurrentFolderId = Notes.ID_ROOT_FOLDER; mNotesListView = (ListView) findViewById(R.id.notes_list); mNotesListView.addFooterView(LayoutInflater.from(this).inflate(R.layout.note_list_footer, null), null, false); mNotesListView.setOnItemClickListener(new OnListItemClickListener()); mNotesListView.setOnItemLongClickListener(this); mNotesListAdapter = new NotesListAdapter(this); mNotesListView.setAdapter(mNotesListAdapter); mAddNewNote = (Button) findViewById(R.id.btn_new_note); mAddNewNote.setOnClickListener(this); mAddNewNote.setOnTouchListener(new NewNoteOnTouchListener()); mDispatch = false; mDispatchY = 0; mOriginY = 0; mTitleBar = (TextView) findViewById(R.id.tv_title_bar); mState = ListEditState.NOTE_LIST; mModeCallBack = new ModeCallback(); } /** * 多选模式回调类 * 实现ListView.MultiChoiceModeListener接口 * 处理批量选择和操作相关的逻辑 */ private class ModeCallback implements ListView.MultiChoiceModeListener, OnMenuItemClickListener { private DropdownMenu mDropDownMenu; private ActionMode mActionMode; private MenuItem mMoveMenu; public boolean onCreateActionMode(ActionMode mode, Menu menu) { getMenuInflater().inflate(R.menu.note_list_options, menu); menu.findItem(R.id.delete).setOnMenuItemClickListener(this); mMoveMenu = menu.findItem(R.id.move); // 通话记录文件夹或没有用户文件夹时隐藏移动选项 if (mFocusNoteDataItem != null && mFocusNoteDataItem.getParentId() == Notes.ID_CALL_RECORD_FOLDER || DataUtils.getUserFolderCount(mContentResolver) == 0) { mMoveMenu.setVisible(false); } else { mMoveMenu.setVisible(true); mMoveMenu.setOnMenuItemClickListener(this); } mActionMode = mode; mNotesListAdapter.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); mNotesListView.setLongClickable(false); mAddNewNote.setVisibility(View.GONE); View customView = LayoutInflater.from(NotesListActivity.this).inflate( R.layout.note_list_dropdown_menu, null); mode.setCustomView(customView); mDropDownMenu = new DropdownMenu(NotesListActivity.this, (Button) customView.findViewById(R.id.selection_menu), R.menu.note_list_dropdown); mDropDownMenu.setOnDropdownMenuItemClickListener(new PopupMenu.OnMenuItemClickListener(){ public boolean onMenuItemClick(MenuItem item) { mNotesListAdapter.selectAll(!mNotesListAdapter.isAllSelected()); updateMenu(); return true; } }); return true; } /** * 更新菜单显示，包括选中数量 */ private void updateMenu() { int selectedCount = mNotesListAdapter.getSelectedCount(); mDropDownMenu.setTitle(String.valueOf(selectedCount)); if (selectedCount == 0) { mMoveMenu.setVisible(false); } else { mMoveMenu.setVisible(true); } } public boolean onPrepareActionMode(ActionMode mode, Menu menu) { return false; } public boolean onActionItemClicked(ActionMode mode, MenuItem item) { return false; } public void onDestroyActionMode(ActionMode mode) { mNotesListAdapter.setChoiceMode(ListView.CHOICE_MODE_NONE); mNotesListView.setLongClickable(true); mAddNewNote.setVisibility(View.VISIBLE); } public void finishActionMode() { mActionMode.finish(); } public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) { mNotesListAdapter.setCheckedItem(position, checked); updateMenu(); } public boolean onMenuItemClick(MenuItem item) { if (item.getItemId() == R.id.delete) { AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this); builder.setTitle(getString(R.string.alert_title_delete)); builder.setIcon(android.R.drawable.ic_dialog_alert); builder.setMessage(getString(R.string.alert_message_delete_note)); builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { batchDelete(); } }); builder.setNegativeButton(android.R.string.cancel, null); builder.show(); } else if (item.getItemId() == R.id.move) { startQueryDestinationFolders(); } return false; } } /** * 开始查询目标文件夹列表（用于移动笔记） * 根据当前状态构建不同的查询条件 */ private void startQueryDestinationFolders() { String selection = NoteColumns.TYPE + "=? AND " + NoteColumns.ID + "<>? AND " + NoteColumns.ID + "<>?"; selection = (mState == ListEditState.NOTE_LIST) ? selection : "(" + selection + ") OR (" + NoteColumns.ID + "=?)"; String[] selectionArgs = (mState == ListEditState.NOTE_LIST) ? new String[] { String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_ROOT_FOLDER), String.valueOf(Notes.ID_TEMPARAY_FOLDER) } : new String[] { String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_ROOT_FOLDER), String.valueOf(Notes.ID_TEMPARAY_FOLDER), String.valueOf(mCurrentFolderId) }; mBackgroundQueryHandler.startQuery(FOLDER_LIST_QUERY_TOKEN, null, Notes.CONTENT_NOTE_URI, FoldersListAdapter.PROJECTION, selection, selectionArgs, null); } /** * 后台查询处理器 * 异步处理数据库查询操作，避免阻塞UI线程 */ private class BackgroundQueryHandler extends AsyncQueryHandler { public BackgroundQueryHandler(ContentResolver contentResolver) { super(contentResolver); } @Override protected void onQueryComplete(int token, Object cookie, Cursor cursor) { switch (token) { case FOLDER_NOTE_LIST_QUERY_TOKEN: mNotesListAdapter.changeCursor(cursor); break; case FOLDER_LIST_QUERY_TOKEN: if (cursor != null && cursor.getCount() > 0) { showFolderListDialog(cursor); } else { Log.e(TAG, "Query folder list failed"); } cursor.close(); break; default: break; } } } /** * 显示文件夹列表对话框（用于选择移动目标） * @param cursor 文件夹数据游标 */ private void showFolderListDialog(Cursor cursor) { final Cursor foldersCursor = cursor; final AlertDialog.Builder builder = new AlertDialog.Builder(this); View view = LayoutInflater.from(this).inflate(R.layout.folder_list_item, null); ListView foldersList = (ListView) view.findViewById(R.id.folders_list); FoldersListAdapter adapter = new FoldersListAdapter(this, foldersCursor); foldersList.setAdapter(adapter); foldersList.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView parent, View view, int position, long id) { if (mFocusNoteDataItem != null) { ContentValues values = new ContentValues(); values.put(NoteColumns.PARENT_ID, id); values.put(NoteColumns.LOCAL_MODIFIED, 1); mContentResolver.update(Notes.CONTENT_NOTE_URI, values, NoteColumns.ID + "=?", new String[] { String.valueOf(mFocusNoteDataItem.getId()) }); } mModeCallBack.finishActionMode(); } }); builder.setTitle("Move to folder"); builder.setView(view); builder.setNegativeButton(android.R.string.cancel, null); builder.show(); } /** * 开始异步查询笔记列表 * 根据当前文件夹ID和状态构建不同的查询条件 */ private void startAsyncNotesListQuery() { String selection = (mCurrentFolderId == Notes.ID_ROOT_FOLDER) ? ROOT_FOLDER_SELECTION : NORMAL_SELECTION; String[] selectionArgs = (mCurrentFolderId == Notes.ID_ROOT_FOLDER) ? new String[] { String.valueOf(Notes.ID_ROOT_FOLDER) } : new String[] { String.valueOf(mCurrentFolderId) }; mBackgroundQueryHandler.startQuery(FOLDER_NOTE_LIST_QUERY_TOKEN, null, Notes.CONTENT_NOTE_URI, NotesListAdapter.PROJECTION, selection, selectionArgs, NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC"); } /** * 列表项点击监听器 * 处理笔记和文件夹的点击事件 */ private final class OnListItemClickListener implements OnItemClickListener { public void onItemClick(AdapterView parent, View view, int position, long id) { // 忽略底部按钮的点击 if (position >= mNotesListAdapter.getCount()) { return; } NoteItemData item = (NoteItemData) mNotesListAdapter.getItem(position); if (item == null) return; Log.d(TAG, "Item clicked: type=" + item.getType() + ", id=" + item.getId() + ", snippet=" + item.getSnippet()); if (item.getType() == Notes.TYPE_NOTE) { openNode(item); } else if (item.getType() == Notes.TYPE_FOLDER) { Log.d(TAG, "Opening folder: " + item.getSnippet()); openFolder(item); } } } /** * 打开笔记编辑页面 * @param data 笔记项数据 */ private void openNode(NoteItemData data) { Intent intent = new Intent(this, NoteEditActivity.class); intent.setAction(Intent.ACTION_VIEW); intent.putExtra(Intent.EXTRA_UID, data.getId()); this.startActivityForResult(intent, REQUEST_CODE_OPEN_NODE); } /** * 进入文件夹 * @param data 文件夹数据 */ private void openFolder(NoteItemData data) { mCurrentFolderId = data.getId(); Log.d(TAG, "Entered folder ID: " + mCurrentFolderId); startAsyncNotesListQuery(); if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) { mState = ListEditState.CALL_RECORD_FOLDER; mAddNewNote.setVisibility(View.GONE); } else { mState = ListEditState.SUB_FOLDER; } if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) { mTitleBar.setText(R.string.call_record_folder_name); } else { mTitleBar.setText(data.getSnippet()); } mTitleBar.setVisibility(View.VISIBLE); } @Override public boolean onItemLongClick(AdapterView parent, View view, int position, long id) { if (position >= mNotesListAdapter.getCount()) { mNotesListView.setSelection(position); return false; } mFocusNoteDataItem = (NoteItemData) mNotesListAdapter.getItem(position); if (mFocusNoteDataItem == null) { Log.e(TAG, "Long click failed: mFocusNoteDataItem is null"); return false; } // 长按普通笔记：直接删除 if (mFocusNoteDataItem.getType() == Notes.TYPE_NOTE) { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle(getString(R.string.alert_title_delete)); builder.setMessage(getString(R.string.alert_message_delete_note)); builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { HashSet ids = new HashSet<>(); ids.add(mFocusNoteDataItem.getId()); DataUtils.batchDeleteNotes(mContentResolver, ids); mNotesListAdapter.changeCursor(null); startAsyncNotesListQuery(); } }); builder.setNegativeButton(android.R.string.cancel, null); builder.show(); return true; } // 长按文件夹：弹出菜单（重命名/删除） if (mFocusNoteDataItem.getType() == Notes.TYPE_FOLDER) { showCreateOrModifyFolderDialog(false); return true; } return false; } public void onClick(View v) { if (v.getId() == R.id.btn_new_note) { createNewNote(); } } /** * 创建新笔记 * 传递当前文件夹ID */ private void createNewNote() { Intent intent = new Intent(this, NoteEditActivity.class); intent.setAction(Intent.ACTION_INSERT_OR_EDIT); intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, mCurrentFolderId); this.startActivityForResult(intent, REQUEST_CODE_NEW_NODE); } /** * 批量删除选中的笔记 * 在同步模式下移动到回收站，否则直接删除 * 同时更新关联的桌面小部件 */ private void batchDelete() { new AsyncTask>() { protected HashSet doInBackground(Void... unused) { HashSet widgets = mNotesListAdapter.getSelectedWidget(); if (!isSyncMode()) { if (DataUtils.batchDeleteNotes(mContentResolver, mNotesListAdapter .getSelectedItemIds())) { } else { Log.e(TAG, "Delete notes error, should not happens"); } } else { if (!DataUtils.batchMoveToFolder(mContentResolver, mNotesListAdapter .getSelectedItemIds(), Notes.ID_TRASH_FOLER)) { Log.e(TAG, "Move notes to trash folder error, should not happens"); } } return widgets; } @Override protected void onPostExecute(HashSet widgets) { if (widgets != null) { for (AppWidgetAttribute widget : widgets) { if (widget.widgetId != AppWidgetManager.INVALID_APPWIDGET_ID && widget.widgetType != Notes.TYPE_WIDGET_INVALIDE) { updateWidget(widget.widgetId, widget.widgetType); } } } mModeCallBack.finishActionMode(); } }.execute(); } /** * 删除文件夹及其所有内容 * @param folderId 文件夹ID */ private void deleteFolder(long folderId) { if (folderId == Notes.ID_ROOT_FOLDER) { Log.e(TAG, "Wrong folder id, should not happen " + folderId); return; } HashSet ids = new HashSet<>(); ids.add(folderId); HashSet widgets = DataUtils.getFolderNoteWidget(mContentResolver, folderId); if (!isSyncMode()) { DataUtils.batchDeleteNotes(mContentResolver, ids); } else { DataUtils.batchMoveToFolder(mContentResolver, ids, Notes.ID_TRASH_FOLER); } if (widgets != null) { for (AppWidgetAttribute widget : widgets) { if (widget.widgetId != AppWidgetManager.INVALID_APPWIDGET_ID && widget.widgetType != Notes.TYPE_WIDGET_INVALIDE) { updateWidget(widget.widgetId, widget.widgetType); } } } } /** * 显示软键盘 */ private void showSoftInput() { InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); if (inputMethodManager != null) { inputMethodManager.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0); } } /** * 隐藏软键盘 * @param view 获取窗口令牌的视图 */ private void hideSoftInput(View view) { InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0); } /** * 显示创建或修改文件夹的对话框 * @param create true表示创建新文件夹，false表示修改现有文件夹 */ private void showCreateOrModifyFolderDialog(final boolean create) { final AlertDialog.Builder builder = new AlertDialog.Builder(this); View view = LayoutInflater.from(this).inflate(R.layout.dialog_edit_text, null); final EditText etName = (EditText) view.findViewById(R.id.et_foler_name); showSoftInput(); if (!create) { if (mFocusNoteDataItem != null) { etName.setText(mFocusNoteDataItem.getSnippet()); builder.setTitle(getString(R.string.menu_folder_change_name)); } else { Log.e(TAG, "The long click data item is null"); return; } } else { etName.setText(""); builder.setTitle(this.getString(R.string.menu_create_folder)); } builder.setPositiveButton(android.R.string.ok, null); builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { hideSoftInput(etName); } }); final Dialog dialog = builder.setView(view).show(); final Button positive = (Button)dialog.findViewById(android.R.id.button1); positive.setOnClickListener(new OnClickListener() { public void onClick(View v) { hideSoftInput(etName); String name = etName.getText().toString(); // 检查文件夹名称是否已存在 if (DataUtils.checkVisibleFolderName(mContentResolver, name)) { Toast.makeText(NotesListActivity.this, getString(R.string.folder_exist, name), Toast.LENGTH_LONG).show(); etName.setSelection(0, etName.length()); return; } if (!create) { // 修改文件夹名称 if (!TextUtils.isEmpty(name)) { ContentValues values = new ContentValues(); values.put(NoteColumns.SNIPPET, name); values.put(NoteColumns.TYPE, Notes.TYPE_FOLDER); values.put(NoteColumns.LOCAL_MODIFIED, 1); mContentResolver.update(Notes.CONTENT_NOTE_URI, values, NoteColumns.ID + "=?", new String[] { String.valueOf(mFocusNoteDataItem.getId()) }); } } else if (!TextUtils.isEmpty(name)) { // 创建新文件夹 ContentValues values = new ContentValues(); values.put(NoteColumns.SNIPPET, name); values.put(NoteColumns.TYPE, Notes.TYPE_FOLDER); mContentResolver.insert(Notes.CONTENT_NOTE_URI, values); } dialog.dismiss(); } }); if (TextUtils.isEmpty(etName.getText())) { positive.setEnabled(false); } // 监听文本变化，控制确定按钮的启用状态 etName.addTextChangedListener(new TextWatcher() { public void beforeTextChanged(CharSequence s, int start, int count, int after) {} public void onTextChanged(CharSequence s, int start, int before, int count) { if (TextUtils.isEmpty(etName.getText())) { positive.setEnabled(false); } else { positive.setEnabled(true); } } public void afterTextChanged(Editable s) {} }); } @Override public void onBackPressed() { // 在子文件夹或通话记录文件夹中按返回键，返回根目录 if (mState == ListEditState.SUB_FOLDER) { mCurrentFolderId = Notes.ID_ROOT_FOLDER; mState = ListEditState.NOTE_LIST; startAsyncNotesListQuery(); mTitleBar.setVisibility(View.GONE); mAddNewNote.setVisibility(View.VISIBLE); } else if (mState == ListEditState.CALL_RECORD_FOLDER) { mCurrentFolderId = Notes.ID_ROOT_FOLDER; mState = ListEditState.NOTE_LIST; startAsyncNotesListQuery(); mTitleBar.setVisibility(View.GONE); mAddNewNote.setVisibility(View.VISIBLE); } else { super.onBackPressed(); } } /** * 更新桌面小部件 * @param widgetId 小部件ID * @param widgetType 小部件类型 */ private void updateWidget(int widgetId, int widgetType) { Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); if (widgetType == Notes.TYPE_WIDGET_2X) { intent.setClass(this, NoteWidgetProvider_2x.class); } else if (widgetType == Notes.TYPE_WIDGET_4X) { intent.setClass(this, NoteWidgetProvider_4x.class); } else { Log.e(TAG, "Unspported widget type"); return; } intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] { widgetId }); sendBroadcast(intent); setResult(RESULT_OK, intent); } /** * 文件夹上下文菜单创建监听器 */ private final OnCreateContextMenuListener mFolderOnCreateContextMenuListener = new OnCreateContextMenuListener() { @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { menu.setHeaderTitle(R.string.menu_folder_option); menu.add(0, MENU_FOLDER_DELETE, 0, R.string.menu_folder_delete); menu.add(0, MENU_FOLDER_CHANGE_NAME, 0, R.string.menu_folder_change_name); } }; @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { if (mState == ListEditState.NOTE_LIST) { AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo; if (info.position >= mNotesListAdapter.getCount()) { return; } NoteItemData item = (NoteItemData) mNotesListAdapter.getItem(info.position); // 只为文件夹显示上下文菜单 if (item.getType() == Notes.TYPE_FOLDER) { menu.setHeaderTitle(R.string.menu_folder_option); menu.add(0, MENU_FOLDER_DELETE, 0, R.string.menu_folder_delete); menu.add(0, MENU_FOLDER_CHANGE_NAME, 0, R.string.menu_folder_change_name); } } } @Override public boolean onContextItemSelected(MenuItem item) { if (item.getItemId() == MENU_FOLDER_DELETE) { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle(getString(R.string.alert_title_delete)); builder.setIcon(android.R.drawable.ic_dialog_alert); builder.setMessage(getString(R.string.alert_message_delete_folder)); builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { deleteFolder(mFocusNoteDataItem.getId()); } }); builder.setNegativeButton(android.R.string.cancel, null); builder.show(); } else if (item.getItemId() == MENU_FOLDER_CHANGE_NAME) { showCreateOrModifyFolderDialog(false); } return true; } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.note_list, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { if (item.getItemId() == R.id.menu_new_folder) { showCreateOrModifyFolderDialog(true); } else if (item.getItemId() == R.id.menu_export_text) { exportNoteToText(); } else if (item.getItemId() == R.id.menu_sync) { if (GTaskSyncService.isSyncing()) { GTaskSyncService.cancelSync(this); } else { GTaskSyncService.startSync(this); } } else if (item.getItemId() == R.id.menu_setting) { Intent intent = new Intent(this, NotesPreferenceActivity.class); startActivity(intent); } else if (item.getItemId() == R.id.menu_search) { onSearchRequested(); } return true; } /** * 导出笔记为文本文件 * 异步执行导出操作，并根据结果显示相应的提示 */ private void exportNoteToText() { final BackupUtils backup = BackupUtils.getInstance(this); new AsyncTask() { @Override protected Integer doInBackground(Void... unused) { return backup.exportToText(); } @Override protected void onPostExecute(Integer result) { if (result == BackupUtils.STATE_SD_CARD_UNMOUONTED) { AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this); builder.setTitle(NotesListActivity.this .getString(R.string.failed_sdcard_export)); builder.setMessage(NotesListActivity.this .getString(R.string.error_sdcard_unmounted)); builder.setPositiveButton(android.R.string.ok, null); builder.show(); } else if (result == BackupUtils.SUCCESS) { AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this); builder.setTitle(NotesListActivity.this .getString(R.string.success_sdcard_export)); builder.setMessage(NotesListActivity.this.getString( R.string.success_sdcard_exported, backup.getExportedTextFile())); builder.setPositiveButton(android.R.string.ok, null); builder.show(); } else if (result == BackupUtils.EXPORT_FILE_UNEXIST) { AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this); builder.setTitle(NotesListActivity.this .getString(R.string.failed_sdcard_export)); builder.setMessage(NotesListActivity.this .getString(R.string.error_sdcard_export)); builder.setPositiveButton(android.R.string.ok, null); builder.show(); } } }.execute(); } /** * 判断当前是否为同步模式 * @return true表示已设置同步账号 */ private boolean isSyncMode() { return NotesPreferenceActivity.isSyncMode(this); } /** * 新建笔记按钮触摸监听器 * 处理滑动事件，防止误触 */ private class NewNoteOnTouchListener implements OnTouchListener { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: Display display = getWindowManager().getDefaultDisplay(); int screenHeight = display.getHeight(); int newNoteViewHeight = mAddNewNote.getHeight(); int start = screenHeight - newNoteViewHeight; int eventY = start + (int) event.getY(); eventY -= 38; if (mDispatchY == 0) { mDispatchY = (int) event.getY(); mOriginY = mDispatchY; } if (eventY > mOriginY + 50) { mDispatch = true; mOriginY = mDispatchY; } break; case MotionEvent.ACTION_MOVE: if (mDispatch) { mDispatchY = (int) event.getY(); } break; case MotionEvent.ACTION_UP: if (mDispatch) { mDispatch = false; if (mDispatchY - mOriginY > 50) { return true; } } mDispatchY = 0; mOriginY = 0; break; default: break; } return false; } } }