/* * 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.support.v7.app.AppCompatActivity; 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.HapticFeedbackConstants; 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.Button; import android.widget.EditText; import android.widget.ListView; 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.tool.onContentClickListener; import net.micode.notes.ui.NotesListAdapter.AppWidgetAttribute; 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; //实现类NotesListActivity，接口是OnClickListener, OnItemLongClickListener public class NotesListActivity extends AppCompatActivity implements OnClickListener { public static final int NOTES_LISTVIEW_SCROLL_RATE = 30; private static final int FOLDER_NOTE_LIST_QUERY_TOKEN = 0; private static final int FOLDER_LIST_QUERY_TOKEN = 1; 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; //便签使用说明 private static final String PREFERENCE_ADD_INTRODUCTION = "net.micode.notes.introduction"; //编辑列表 private static final String TAG = "NotesListActivity"; private static final String NORMAL_SELECTION = NoteColumns.PARENT_ID + "=?"; //The parent's id for note or folder private static final String ROOT_FOLDER_SELECTION = "(" + NoteColumns.TYPE + "<>" //根文件夹筛选 + Notes.TYPE_SYSTEM + " AND " + NoteColumns.PARENT_ID + "=?)" + " OR (" + NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER + " AND " + NoteColumns.NOTES_COUNT + ">0)"; private final static int REQUEST_CODE_OPEN_NODE = 102; private final static int REQUEST_CODE_NEW_NODE = 103; 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 NoteItemData mFocusNoteDataItem; private final OnCreateContextMenuListener mFolderOnCreateContextMenuListener = new OnCreateContextMenuListener() { public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { if (mFocusNoteDataItem != null) { menu.setHeaderTitle(mFocusNoteDataItem.getSnippet()); menu.add(Menu.NONE, MENU_FOLDER_VIEW, 0, R.string.menu_folder_view); menu.add(Menu.NONE, MENU_FOLDER_DELETE, 1, R.string.menu_folder_delete); menu.add(Menu.NONE, MENU_FOLDER_CHANGE_NAME, 2, R.string.menu_folder_change_name); } } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.note_list); initResources(); /**当用户使用的时候插入对APP的介绍 * Insert an introduction when user firstly use this application */ setAppInfoFromRawRes(); } //创建记事本列表事件运行结果 @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (resultCode == RESULT_OK && (requestCode == REQUEST_CODE_OPEN_NODE || requestCode == REQUEST_CODE_NEW_NODE)) { mNotesListAdapter.changeCursor(null);//请求记事本打开或者记事本创建了新的列表 } else { super.onActivityResult(requestCode, resultCode, data);//运行事件 } } //从res中的raw文件夹中导入资源，具体来说，载入一开始的便签内容 private void setAppInfoFromRawRes() { SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this); if (!sp.getBoolean(PREFERENCE_ADD_INTRODUCTION, false)) { //getBoolean：判断if不存在第一个参数，返回false的值。这里如果是第一次进入小米便签，则执行下面的语句 StringBuilder sb = new StringBuilder(); InputStream in = null; try { in = getResources().openRawResource(R.raw.introduction);//加载introduction模块 if (in != null) { InputStreamReader isr = new InputStreamReader(in);//读入数据 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) { // TODO Auto-generated catch block e.printStackTrace(); } } } //创建一个空的便签 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()) {//保存便签 sp.edit().putBoolean(PREFERENCE_ADD_INTRODUCTION, true).commit(); } else { Log.e(TAG, "Save introduction note error");//保存失败 return; } } } @Override protected void onStart() { super.onStart(); startAsyncNotesListQuery(); //事件开始 } @Override protected void onResume() { super.onResume(); if (mNotesListAdapter != null) { mNotesListAdapter.notifyDataSetChanged();//有时候我们需要修改已经生成的列表，添加或者修改数据，notifyDataSetChanged()可以在修改适配器绑定的数组后， // 不用重新刷新Activity，通知Activity更新ListView。今天的例子就是通过Handler AsyncTask两种方式来动态更新ListView。 mNotesListAdapter.slideHelper.closeAll(); //调用-结束部分 } } 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); /*内容区域添加点击和长按事件回调，给NotesListAdapter传入回调*/ mNotesListAdapter = new NotesListAdapter(this, new onContentClickListener() { @Override public void onLongClick(int position, NoteItemData noteItemData, View view, long id) { Log.i(TAG, "onLongClick: " + position); if (view instanceof NotesListItem) { mFocusNoteDataItem = ((NotesListItem) view).getItemData(); if (mFocusNoteDataItem.getType() == Notes.TYPE_NOTE && !mNotesListAdapter.isInChoiceMode()) { if (mNotesListView.startActionMode(mModeCallBack) != null) { mModeCallBack.onItemCheckedStateChanged(null, position, position, true); mNotesListView.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); } else { Log.e(TAG, "startActionMode fails"); } } else if (mFocusNoteDataItem.getType() == Notes.TYPE_FOLDER) { mNotesListView.setOnCreateContextMenuListener(mFolderOnCreateContextMenuListener); } } } @Override public void onClick(int position, NoteItemData noteItemData, View view, long id) { if (view instanceof NotesListItem) { NoteItemData item = ((NotesListItem) view).getItemData(); if (mNotesListAdapter.isInChoiceMode()) { if (item.getType() == Notes.TYPE_NOTE) { position = position - mNotesListView.getHeaderViewsCount(); mModeCallBack.onItemCheckedStateChanged(null, position, position, !mNotesListAdapter.isSelectedItem(position)); } return; } switch (mState) { case NOTE_LIST: if (item.getType() == Notes.TYPE_FOLDER || item.getType() == Notes.TYPE_SYSTEM) { openFolder(item); } else if (item.getType() == Notes.TYPE_NOTE) { openNode(item); } else { Log.e(TAG, "Wrong note type in NOTE_LIST"); } break; case SUB_FOLDER: case CALL_RECORD_FOLDER: if (item.getType() == Notes.TYPE_NOTE) { openNode(item); } else { Log.e(TAG, "Wrong note type in SUB_FOLDER"); } break; default: break; } } } }); 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(); } private void startAsyncNotesListQuery() { /*根据条件优先级就行数据库排序查询，直接影响列表的显示顺序，这个就是置顶的功能实现*/ //#FOLDER_NOTE_LIST_QUERY_TOKENcookie,你想传给onXXXComplete方法使用的一个对象。(没有的话传递null即可) //Uri uri（进行查询的通用资源标志符）: //projection 查询的列 //selection 限制条件 //selectionArgs 查询参数 //orderBy 排序条件 //筛选的条件，这里是传入selection里的参数 String selection = (mCurrentFolderId == Notes.ID_ROOT_FOLDER) ? ROOT_FOLDER_SELECTION : NORMAL_SELECTION; mBackgroundQueryHandler.startQuery(FOLDER_NOTE_LIST_QUERY_TOKEN, null, Notes.CONTENT_NOTE_URI, NoteItemData.PROJECTION, selection, new String[]{ String.valueOf(mCurrentFolderId) }, NoteColumns.TYPE + " DESC," + NoteColumns.TOP + " DESC," + NoteColumns.MODIFIED_DATE + " DESC"); } //为用户展现文件接口 private void showFolderListMenu(Cursor cursor) { AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this); builder.setTitle(R.string.menu_title_select_folder); final FoldersListAdapter adapter = new FoldersListAdapter(this, cursor); builder.setAdapter(adapter, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { DataUtils.batchMoveToFolder(mContentResolver, //复制本地文件 mNotesListAdapter.getSelectedItemIds(), adapter.getItemId(which)); Toast.makeText( NotesListActivity.this, getString(R.string.format_move_notes_to_folder, mNotesListAdapter.getSelectedCount(), adapter.getFolderName(NotesListActivity.this, which)), Toast.LENGTH_SHORT).show(); mModeCallBack.finishActionMode(); } }); builder.show(); } //创建新的便签 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); } private void batchDelete() { new AsyncTask>() { protected HashSet doInBackground(Void... unused) { HashSet widgets = mNotesListAdapter.getSelectedWidget(); if (!isSyncMode()) { // if not synced, delete notes directly if (DataUtils.batchDeleteNotes(mContentResolver, mNotesListAdapter .getSelectedItemIds())) { } else { Log.e(TAG, "Delete notes error, should not happens"); } } else { // in sync mode, we'll move the deleted note into the trash // folder 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 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()) { // if not synced, delete folder directly DataUtils.batchDeleteNotes(mContentResolver, ids); } else { // in sync mode, we'll move the deleted folder into the trash folder 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); } } } } /*获取note id然后更新数据库，标记完成*/ private void updateNoteComplete() { HashSet itemIds = mNotesListAdapter.getSelectedItemIds(); for (Long id : itemIds) { ContentValues values = new ContentValues(); values.put(NoteColumns.COMPLETE, true); values.put(NoteColumns.TYPE, Notes.TYPE_NOTE); values.put(NoteColumns.LOCAL_MODIFIED, 1); mContentResolver.update(Notes.CONTENT_NOTE_URI, values, NoteColumns.ID + "=?", new String[]{ String.valueOf(id) }); } /*完成后 退出选择模式*/ mModeCallBack.finishActionMode(); } //打开便签 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); } //打开文件 private void openFolder(NoteItemData data) { mCurrentFolderId = data.getId(); 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); } //为用户显示便签 public void onClick(View v) { switch (v.getId()) { case R.id.btn_new_note: createNewNote(); break; default: break; } } //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 private void hideSoftInput(View view) { InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0); } //展现便签内容 private void showCreateOrModifyFolderDialog(final boolean create) { final AlertDialog.Builder builder = new AlertDialog.Builder(this);//构建窗口 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());//改变标题名称 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(); 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) { 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)) { 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); } /** * When the name edit text is null, disable the positive button */ etName.addTextChangedListener(new TextWatcher() { public void beforeTextChanged(CharSequence s, int start, int count, int after) { // TODO Auto-generated method stub } 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) { // TODO Auto-generated method stub } }); } //后退键的设置 @Override public void onBackPressed() { switch (mState) { case SUB_FOLDER: mCurrentFolderId = Notes.ID_ROOT_FOLDER; mState = ListEditState.NOTE_LIST; startAsyncNotesListQuery(); mTitleBar.setVisibility(View.GONE); mNotesListAdapter.slideHelper.closeAll(); break; case CALL_RECORD_FOLDER: mCurrentFolderId = Notes.ID_ROOT_FOLDER; mState = ListEditState.NOTE_LIST; mAddNewNote.setVisibility(View.VISIBLE); mTitleBar.setVisibility(View.GONE); startAsyncNotesListQuery(); mNotesListAdapter.slideHelper.closeAll(); break; case NOTE_LIST: super.onBackPressed(); break; default: break; } } private void updateWidget(int appWidgetId, int appWidgetType) { Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); if (appWidgetType == Notes.TYPE_WIDGET_2X) { intent.setClass(this, NoteWidgetProvider_2x.class); } else if (appWidgetType == 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[]{ appWidgetId }); sendBroadcast(intent); setResult(RESULT_OK, intent); } @Override public void onContextMenuClosed(Menu menu) { if (mNotesListView != null) { mNotesListView.setOnCreateContextMenuListener(null); } super.onContextMenuClosed(menu); } @Override public boolean onContextItemSelected(MenuItem item) { if (mFocusNoteDataItem == null) { Log.e(TAG, "The long click data item is null"); return false; } switch (item.getItemId()) { case MENU_FOLDER_VIEW: openFolder(mFocusNoteDataItem); break; case 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(); break; case MENU_FOLDER_CHANGE_NAME: showCreateOrModifyFolderDialog(false); break; default: break; } return true; } @Override public boolean onPrepareOptionsMenu(Menu menu) { menu.clear(); if (mState == ListEditState.NOTE_LIST) { getMenuInflater().inflate(R.menu.note_list, menu); // set sync or sync_cancel menu.findItem(R.id.menu_sync).setTitle( GTaskSyncService.isSyncing() ? R.string.menu_sync_cancel : R.string.menu_sync); } else if (mState == ListEditState.SUB_FOLDER) { getMenuInflater().inflate(R.menu.sub_folder, menu); } else if (mState == ListEditState.CALL_RECORD_FOLDER) { getMenuInflater().inflate(R.menu.call_record_folder, menu); } else { Log.e(TAG, "Wrong state:" + mState); } return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.menu_new_folder: { showCreateOrModifyFolderDialog(true); break; } case R.id.menu_export_text: { exportNoteToText(); break; } case R.id.menu_sync: { if (isSyncMode()) { if (TextUtils.equals(item.getTitle(), getString(R.string.menu_sync))) { GTaskSyncService.startSync(this); } else { GTaskSyncService.cancelSync(this); } } else { startPreferenceActivity(); } break; } case R.id.menu_setting: { startPreferenceActivity(); break; } case R.id.menu_new_note: { createNewNote(); break; } case R.id.menu_search: onSearchRequested(); break; default: break; } return true; } @Override public boolean onSearchRequested() { startSearch(null, false, null /* appData */, false); return true; } private void exportNoteToText() { final BackupUtils backup = BackupUtils.getInstance(NotesListActivity.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.STATE_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.format_exported_file_location, backup .getExportedTextFileName(), backup.getExportedTextFileDir())); builder.setPositiveButton(android.R.string.ok, null); builder.show(); } else if (result == BackupUtils.STATE_SYSTEM_ERROR) { 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(); } private boolean isSyncMode() { return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0; } private void startPreferenceActivity() { Activity from = getParent() != null ? getParent() : this; Intent intent = new Intent(from, NotesPreferenceActivity.class); from.startActivityIfNeeded(intent, -1); } private void startQueryDestinationFolders() { String selection = NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>? AND " + NoteColumns.ID + "<>?"; selection = (mState == ListEditState.NOTE_LIST) ? selection : "(" + selection + ") OR (" + NoteColumns.ID + "=" + Notes.ID_ROOT_FOLDER + ")"; mBackgroundQueryHandler.startQuery(FOLDER_LIST_QUERY_TOKEN, null, Notes.CONTENT_NOTE_URI, FoldersListAdapter.PROJECTION, selection, new String[]{ String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_TRASH_FOLER), String.valueOf(mCurrentFolderId) }, NoteColumns.MODIFIED_DATE + " DESC"); } private enum ListEditState { NOTE_LIST, SUB_FOLDER, CALL_RECORD_FOLDER } private class ModeCallback implements ListView.MultiChoiceModeListener, OnMenuItemClickListener { private TextView mTextView; private ActionMode mActionMode; private MenuItem mMoveMenu; @Override public boolean onCreateActionMode(ActionMode mode, Menu menu) { getMenuInflater().inflate(R.menu.note_list_options, menu); menu.findItem(R.id.delete).setOnMenuItemClickListener(this); /*设置全选菜单点击事件*/ menu.findItem(R.id.selectAll).setOnMenuItemClickListener(this); /*设置标记完成菜单点击事件*/ menu.findItem(R.id.complete).setOnMenuItemClickListener(this); mMoveMenu = menu.findItem(R.id.move); if (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(true); mNotesListView.setLongClickable(false); mAddNewNote.setVisibility(View.GONE); View customView = LayoutInflater.from(NotesListActivity.this).inflate( R.layout.note_list_dropdown_menu, null); mode.setCustomView(customView); mTextView = customView.findViewById(R.id.selection_menu); return true; } private void updateMenu() { int selectedCount = mNotesListAdapter.getSelectedCount(); // Update dropdown menu String format = getResources().getString(R.string.menu_select_title, selectedCount); mTextView.setText(format); } @Override public boolean onPrepareActionMode(ActionMode mode, Menu menu) { return false; } @Override public boolean onActionItemClicked(ActionMode mode, MenuItem item) { return false; } @Override public void onDestroyActionMode(ActionMode mode) { Log.i(TAG, "onDestroyActionMode: "); mNotesListAdapter.setChoiceMode(false); mNotesListView.setLongClickable(true); /*修复返回键不退出选择模式*/ mNotesListAdapter.setChoiceMode(false); mNotesListAdapter.notifyDataSetChanged(); mAddNewNote.setVisibility(View.VISIBLE); } public void finishActionMode() { Log.i(TAG, "finishActionMode: "); mActionMode.finish(); } @Override public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) { mNotesListAdapter.setCheckedItem(position, checked); updateMenu(); } @Override public boolean onMenuItemClick(MenuItem item) { switch (item.getItemId()) { case R.id.delete: if (mNotesListAdapter.getSelectedCount() == 0) { Toast.makeText(NotesListActivity.this, getString(R.string.menu_select_none), Toast.LENGTH_SHORT).show(); return true; } 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_notes, mNotesListAdapter.getSelectedCount())); 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(); break; case R.id.move: if (mNotesListAdapter.getSelectedCount() == 0) { Toast.makeText(NotesListActivity.this, getString(R.string.menu_select_none), Toast.LENGTH_SHORT).show(); return true; } startQueryDestinationFolders(); break; /*全选的点击事件实现，调用mNotesListAdapter.selectAll*/ case R.id.selectAll: mNotesListAdapter.selectAll(!mNotesListAdapter.isAllSelected()); mNotesListAdapter.notifyDataSetChanged(); break; /*标记完成的点击事件实现*/ case R.id.complete: if (mNotesListAdapter.getSelectedCount() == 0) { Toast.makeText(NotesListActivity.this, getString(R.string.menu_select_none), Toast.LENGTH_SHORT).show(); return true; } updateNoteComplete(); break; default: return false; } return true; } } private class NewNoteOnTouchListener implements OnTouchListener { 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(); /** * Minus TitleBar's height */ if (mState == ListEditState.SUB_FOLDER) { eventY -= mTitleBar.getHeight(); start -= mTitleBar.getHeight(); } /** * HACKME:When click the transparent part of "New Note" button, dispatch * the event to the list view behind this button. The transparent part of * "New Note" button could be expressed by formula y=-0.12x+94（Unit:pixel） * and the line top of the button. The coordinate based on left of the "New * Note" button. The 94 represents maximum height of the transparent part. * Notice that, if the background of the button changes, the formula should * also change. This is very bad, just for the UI designer's strong requirement. */ if (event.getY() < (event.getX() * (-0.12) + 94)) { View view = mNotesListView.getChildAt(mNotesListView.getChildCount() - 1 - mNotesListView.getFooterViewsCount()); if (view != null && view.getBottom() > start && (view.getTop() < (start + 94))) { mOriginY = (int) event.getY(); mDispatchY = eventY; event.setLocation(event.getX(), mDispatchY); mDispatch = true; return mNotesListView.dispatchTouchEvent(event); } } break; } case MotionEvent.ACTION_MOVE: { if (mDispatch) { mDispatchY += (int) event.getY() - mOriginY; event.setLocation(event.getX(), mDispatchY); return mNotesListView.dispatchTouchEvent(event); } break; } default: { if (mDispatch) { event.setLocation(event.getX(), mDispatchY); mDispatch = false; return mNotesListView.dispatchTouchEvent(event); } break; } } return false; } } private final class BackgroundQueryHandler extends AsyncQueryHandler { public BackgroundQueryHandler(ContentResolver contentResolver) { super(contentResolver); } //查询的响应回调 //首先执行开始查询操作startQuary()，这个方法给我们封装好了，是在子线程执行的，在它内部自定查询完毕后会生成一个curssor对象，回调内部类里面的onQueryComplete方法， // 这个方法的三个参数分别是：1：请求码（可以想一下intent隐式启动的那个请求码的意思）2：执行startQuary()时候，第二参数。一般传入null，但是有时候会是某个对象（场景：AsyncQueryHandler与CursorAdapter结合使用的时候， // 这里就可以传入一个curssorAdapter对象，在回到方法里面就可以接收这个对象。回想message的obj字段）3：startQuary()方法查询数据库后所有返回的结果游标。接下来就很简单了，遍历cursor保存数据即可了。 @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) { showFolderListMenu(cursor); } else { Log.e(TAG, "Query folder failed"); } break; default: return; } } } // public boolean onItemLongClick(AdapterView parent, View view, int position, long id) { // if (view instanceof NotesListItem) { // mFocusNoteDataItem = ((NotesListItem) view).getItemData(); // if (mFocusNoteDataItem.getType() == Notes.TYPE_NOTE && !mNotesListAdapter.isInChoiceMode()) { // if (mNotesListView.startActionMode(mModeCallBack) != null) { // mModeCallBack.onItemCheckedStateChanged(null, position, id, true); // mNotesListView.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); // } else { // Log.e(TAG, "startActionMode fails"); // } // } else if (mFocusNoteDataItem.getType() == Notes.TYPE_FOLDER) { // mNotesListView.setOnCreateContextMenuListener(mFolderOnCreateContextMenuListener); // } // } // return false; // } }