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@ -1,19 +1,3 @@
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/*
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* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package net.micode.notes.ui;
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import android.app.Activity;
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@ -77,8 +61,12 @@ import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.util.HashSet;
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public class NotesListActivity extends Activity implements OnClickListener, OnItemLongClickListener {
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//主界面，一进入就是这个界面
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/**
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* @author k
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*
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*/
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public class NotesListActivity extends Activity implements OnClickListener, OnItemLongClickListener { //没有用特定的标签加注释。。。感觉没有什么用
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private static final int FOLDER_NOTE_LIST_QUERY_TOKEN = 0;
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private static final int FOLDER_LIST_QUERY_TOKEN = 1;
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@ -89,7 +77,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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private static final int MENU_FOLDER_CHANGE_NAME = 2;
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private static final String PREFERENCE_ADD_INTRODUCTION = "net.micode.notes.introduction";
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private static final String PREFERENCE_ADD_INTRODUCTION = "net.micode.notes.introduction"; //单行超过80个字符
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private enum ListEditState {
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NOTE_LIST, SUB_FOLDER, CALL_RECORD_FOLDER
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@ -136,8 +124,20 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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private final static int REQUEST_CODE_NEW_NODE = 103;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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/**
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* @method onCreate
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* @description
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* @date: 9:58 AM
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* @author: YangYizhe
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* @param [savedInstanceState]
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* @return void
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*/
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protected void onCreate(final Bundle savedInstanceState) { //需要是final类型 根据程序上下文环境，Java关键字final有“这是无法改变的”或者“终态的”含义，它可以修饰非抽象类、非抽象类成员方法和变量。你可能出于两种理解而需要阻止改变：设计或效率。
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// final类不能被继承，没有子类，final类中的方法默认是final的。
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//final方法不能被子类的方法覆盖，但可以被继承。
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//final成员变量表示常量，只能被赋值一次，赋值后值不再改变。
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//final不能用于修饰构造方法。
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super.onCreate(savedInstanceState); // 调用父类的onCreate函数
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setContentView(R.layout.note_list);
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initResources();
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@ -148,26 +148,32 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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}
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@Override
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// 返回一些子模块完成的数据交给主Activity处理
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protected void onActivityResult(int requestCode, int resultCode, Intent data) {
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// 结果值 和 要求值 符合要求
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if (resultCode == RESULT_OK
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&& (requestCode == REQUEST_CODE_OPEN_NODE || requestCode == REQUEST_CODE_NEW_NODE)) {
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mNotesListAdapter.changeCursor(null);
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} else {
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super.onActivityResult(requestCode, resultCode, data);
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// 调用 Activity 的onActivityResult（）
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}
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}
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private void setAppInfoFromRawRes() {
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// Android平台给我们提供了一个SharedPreferences类，它是一个轻量级的存储类，特别适合用于保存软件配置参数。
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SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
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if (!sp.getBoolean(PREFERENCE_ADD_INTRODUCTION, false)) {
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StringBuilder sb = new StringBuilder();
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InputStream in = null;
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try {
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in = getResources().openRawResource(R.raw.introduction);
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// 把资源文件放到应用程序的/raw/raw下，那么就可以在应用中使用getResources获取资源后,
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// 以openRawResource方法（不带后缀的资源文件名）打开这个文件。
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in = getResources().openRawResource(R.raw.introduction);
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if (in != null) {
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InputStreamReader isr = new InputStreamReader(in);
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BufferedReader br = new BufferedReader(isr);
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char [] buf = new char[1024];
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char [] buf = new char[1024]; // 自行定义的数值，使用者不知道有什么意义
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int len = 0;
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while ((len = br.read(buf)) > 0) {
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sb.append(buf, 0, len);
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@ -180,7 +186,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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e.printStackTrace();
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return;
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} finally {
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if(in != null) {
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if (in != null) {
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try {
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in.close();
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} catch (IOException e) {
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@ -190,11 +196,13 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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}
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}
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// 创建空的WorkingNote
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WorkingNote note = WorkingNote.createEmptyNote(this, Notes.ID_ROOT_FOLDER,
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AppWidgetManager.INVALID_APPWIDGET_ID, Notes.TYPE_WIDGET_INVALIDE,
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ResourceParser.RED);
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note.setWorkingText(sb.toString());
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if (note.saveNote()) {
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// 更新保存note的信息
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sp.edit().putBoolean(PREFERENCE_ADD_INTRODUCTION, true).commit();
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} else {
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Log.e(TAG, "Save introduction note error");
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@ -209,18 +217,21 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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startAsyncNotesListQuery();
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}
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// 初始化资源
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private void initResources() {
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mContentResolver = this.getContentResolver();
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mContentResolver = this.getContentResolver(); // 获取应用程序的数据，得到类似数据表的东西
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mBackgroundQueryHandler = new BackgroundQueryHandler(this.getContentResolver());
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mCurrentFolderId = Notes.ID_ROOT_FOLDER;
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mNotesListView = (ListView) findViewById(R.id.notes_list);
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// findViewById 是安卓编程的定位函数，主要是引用.R文件里的引用名
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mNotesListView = (ListView) findViewById(R.id.notes_list); // 绑定XML中的ListView，作为Item的容器
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mNotesListView.addFooterView(LayoutInflater.from(this).inflate(R.layout.note_list_footer, null),
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null, false);
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mNotesListView.setOnItemClickListener(new OnListItemClickListener());
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mNotesListView.setOnItemLongClickListener(this);
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mNotesListAdapter = new NotesListAdapter(this);
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mNotesListView.setAdapter(mNotesListAdapter);
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mAddNewNote = (Button) findViewById(R.id.btn_new_note);
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mAddNewNote = (Button) findViewById(R.id.btn_new_note);// 在activity中要获取该按钮
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mAddNewNote.setOnClickListener(this);
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mAddNewNote.setOnTouchListener(new NewNoteOnTouchListener());
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mDispatch = false;
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@ -231,6 +242,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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mModeCallBack = new ModeCallback();
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}
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// 继承自ListView.MultiChoiceModeListener 和 OnMenuItemClickListener
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private class ModeCallback implements ListView.MultiChoiceModeListener, OnMenuItemClickListener {
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private DropdownMenu mDropDownMenu;
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private ActionMode mActionMode;
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@ -259,7 +271,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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(Button) customView.findViewById(R.id.selection_menu),
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R.menu.note_list_dropdown);
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mDropDownMenu.setOnDropdownMenuItemClickListener(new PopupMenu.OnMenuItemClickListener(){
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public boolean onMenuItemClick(MenuItem item) {
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public boolean onMenuItemClick(final MenuItem item) {
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mNotesListAdapter.selectAll(!mNotesListAdapter.isAllSelected());
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updateMenu();
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return true;
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@ -269,11 +281,12 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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return true;
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}
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// 更新菜单
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private void updateMenu() {
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int selectedCount = mNotesListAdapter.getSelectedCount();
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// Update dropdown menu
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String format = getResources().getString(R.string.menu_select_title, selectedCount);
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mDropDownMenu.setTitle(format);
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mDropDownMenu.setTitle(format); // 更改标题
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MenuItem item = mDropDownMenu.findItem(R.id.action_select_all);
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if (item != null) {
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if (mNotesListAdapter.isAllSelected()) {
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@ -307,7 +320,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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}
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public void onItemCheckedStateChanged(ActionMode mode, int position, long id,
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boolean checked) {
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boolean checked) {
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mNotesListAdapter.setCheckedItem(position, checked);
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updateMenu();
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}
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@ -347,52 +360,58 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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private class NewNoteOnTouchListener implements OnTouchListener {
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public boolean onTouch(View v, MotionEvent event) {
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int action = event.getAction();
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if (action == MotionEvent.ACTION_DOWN) {
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Display display = getWindowManager().getDefaultDisplay();
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int screenHeight = display.getHeight();
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int newNoteViewHeight = mAddNewNote.getHeight();
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int start = screenHeight - newNoteViewHeight;
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int eventY = start + (int) event.getY();
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/**
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* Minus TitleBar's height
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*/
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if (mState == ListEditState.SUB_FOLDER) {
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eventY -= mTitleBar.getHeight();
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start -= mTitleBar.getHeight();
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switch (event.getAction()) {
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case MotionEvent.ACTION_DOWN: {
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Display display = getWindowManager().getDefaultDisplay();
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int screenHeight = display.getHeight();
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int newNoteViewHeight = mAddNewNote.getHeight();
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int start = screenHeight - newNoteViewHeight;
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int eventY = start + (int) event.getY();
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/**
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* Minus TitleBar's height
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*/
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if (mState == ListEditState.SUB_FOLDER) {
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eventY -= mTitleBar.getHeight();
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start -= mTitleBar.getHeight();
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}
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/**
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* HACKME:When click the transparent part of "New Note" button, dispatch
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* the event to the list view behind this button. The transparent part of
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* "New Note" button could be expressed by formula y=-0.12x+94锛圲nit:pixel锛<EFBFBD>
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* and the line top of the button. The coordinate based on left of the "New
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* Note" button. The 94 represents maximum height of the transparent part.
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* Notice that, if the background of the button changes, the formula should
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* also change. This is very bad, just for the UI designer's strong requirement.
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*/
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if (event.getY() < (event.getX() * (-0.12) + 94)) {
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View view = mNotesListView.getChildAt(mNotesListView.getChildCount() - 1
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- mNotesListView.getFooterViewsCount());
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if (view != null && view.getBottom() > start
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&& (view.getTop() < (start + 94))) {
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mOriginY = (int) event.getY();
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mDispatchY = eventY;
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event.setLocation(event.getX(), mDispatchY);
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mDispatch = true;
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return mNotesListView.dispatchTouchEvent(event);
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}
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}
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break;
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}
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/**
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* HACKME:When click the transparent part of "New Note" button, dispatch
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* the event to the list view behind this button. The transparent part of
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* "New Note" button could be expressed by formula y=-0.12x+94（Unit:pixel）
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* and the line top of the button. The coordinate based on left of the "New
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* Note" button. The 94 represents maximum height of the transparent part.
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* Notice that, if the background of the button changes, the formula should
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* also change. This is very bad, just for the UI designer's strong requirement.
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*/
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if (event.getY() < (event.getX() * (-0.12) + 94)) {
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View view = mNotesListView.getChildAt(mNotesListView.getChildCount() - 1
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- mNotesListView.getFooterViewsCount());
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if (view != null && view.getBottom() > start
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&& (view.getTop() < (start + 94))) {
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mOriginY = (int) event.getY();
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mDispatchY = eventY;
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case MotionEvent.ACTION_MOVE: {
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if (mDispatch) {
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mDispatchY += (int) event.getY() - mOriginY;
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event.setLocation(event.getX(), mDispatchY);
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mDispatch = true;
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return mNotesListView.dispatchTouchEvent(event);
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}
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break;
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}
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} else if (action == MotionEvent.ACTION_MOVE) {
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if (mDispatch) {
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mDispatchY += (int) event.getY() - mOriginY;
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event.setLocation(event.getX(), mDispatchY);
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return mNotesListView.dispatchTouchEvent(event);
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}
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} else {
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if (mDispatch) {
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event.setLocation(event.getX(), mDispatchY);
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mDispatch = false;
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return mNotesListView.dispatchTouchEvent(event);
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default: {
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if (mDispatch) {
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event.setLocation(event.getX(), mDispatchY);
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mDispatch = false;
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return mNotesListView.dispatchTouchEvent(event);
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}
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break;
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}
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}
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return false;
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@ -405,7 +424,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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: NORMAL_SELECTION;
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mBackgroundQueryHandler.startQuery(FOLDER_NOTE_LIST_QUERY_TOKEN, null,
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Notes.CONTENT_NOTE_URI, NoteItemData.PROJECTION, selection, new String[] {
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String.valueOf(mCurrentFolderId)
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String.valueOf(mCurrentFolderId)
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}, NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC");
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}
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@ -612,7 +631,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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values.put(NoteColumns.LOCAL_MODIFIED, 1);
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mContentResolver.update(Notes.CONTENT_NOTE_URI, values, NoteColumns.ID
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+ "=?", new String[] {
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String.valueOf(mFocusNoteDataItem.getId())
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String.valueOf(mFocusNoteDataItem.getId())
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});
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}
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} else if (!TextUtils.isEmpty(name)) {
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@ -652,30 +671,38 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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});
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}
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/* (non-Javadoc)
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* @see android.app.Activity#onBackPressed()
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* 按返回键时根据情况更改类中的数据
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*/
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@Override
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public void onBackPressed() {
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switch (mState) {
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case SUB_FOLDER:
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mCurrentFolderId = Notes.ID_ROOT_FOLDER;
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mState = ListEditState.NOTE_LIST;
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startAsyncNotesListQuery();
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mTitleBar.setVisibility(View.GONE);
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break;
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case CALL_RECORD_FOLDER:
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mCurrentFolderId = Notes.ID_ROOT_FOLDER;
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mState = ListEditState.NOTE_LIST;
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mAddNewNote.setVisibility(View.VISIBLE);
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mTitleBar.setVisibility(View.GONE);
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startAsyncNotesListQuery();
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break;
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case NOTE_LIST:
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super.onBackPressed();
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break;
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default:
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break;
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}
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public void onBackPressed() { switch (mState) {
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case SUB_FOLDER:
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mCurrentFolderId = Notes.ID_ROOT_FOLDER;
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mState = ListEditState.NOTE_LIST;
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startAsyncNotesListQuery();
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mTitleBar.setVisibility(View.GONE);
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break;
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case CALL_RECORD_FOLDER:
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mCurrentFolderId = Notes.ID_ROOT_FOLDER;
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mState = ListEditState.NOTE_LIST;
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mAddNewNote.setVisibility(View.VISIBLE);
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mTitleBar.setVisibility(View.GONE);
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startAsyncNotesListQuery();
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break;
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case NOTE_LIST:
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super.onBackPressed();
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break;
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default:
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break;
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}
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}
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/**
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* @param appWidgetId
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* @param appWidgetType
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* 根据不同类型的widget更新插件，通过intent传送数据
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*/
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private void updateWidget(int appWidgetId, int appWidgetType) {
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Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
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if (appWidgetType == Notes.TYPE_WIDGET_2X) {
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@ -688,13 +715,16 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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}
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intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] {
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appWidgetId
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appWidgetId
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});
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sendBroadcast(intent);
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setResult(RESULT_OK, intent);
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}
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/**
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* 声明监听器，建立菜单，包括名称，视图，删除操作，更改名称操作；
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*/
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private final OnCreateContextMenuListener mFolderOnCreateContextMenuListener = new OnCreateContextMenuListener() {
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public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
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if (mFocusNoteDataItem != null) {
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@ -714,6 +744,10 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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super.onContextMenuClosed(menu);
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}
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/* (non-Javadoc)
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* @see android.app.Activity#onContextItemSelected(android.view.MenuItem)
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* 针对menu中不同的选择进行不同的处理，里面详细注释
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*/
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@Override
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public boolean onContextItemSelected(MenuItem item) {
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if (mFocusNoteDataItem == null) {
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@ -722,10 +756,10 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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}
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switch (item.getItemId()) {
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case MENU_FOLDER_VIEW:
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openFolder(mFocusNoteDataItem);
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openFolder(mFocusNoteDataItem);//打开对应文件
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break;
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case MENU_FOLDER_DELETE:
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AlertDialog.Builder builder = new AlertDialog.Builder(this);
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AlertDialog.Builder builder = new AlertDialog.Builder(this);//设置确认是否删除的对话框
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builder.setTitle(getString(R.string.alert_title_delete));
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builder.setIcon(android.R.drawable.ic_dialog_alert);
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builder.setMessage(getString(R.string.alert_message_delete_folder));
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@ -736,7 +770,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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}
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});
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builder.setNegativeButton(android.R.string.cancel, null);
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builder.show();
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builder.show();//显示对话框
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break;
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case MENU_FOLDER_CHANGE_NAME:
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showCreateOrModifyFolderDialog(false);
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@ -793,12 +827,19 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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return true;
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}
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/* (non-Javadoc)
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* @see android.app.Activity#onSearchRequested()
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* 直接调用startSearch函数
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*/
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@Override
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public boolean onSearchRequested() {
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startSearch(null, false, null /* appData */, false);
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return true;
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}
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/**
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* 函数功能：实现将便签导出到文本功能
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*/
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private void exportNoteToText() {
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final BackupUtils backup = BackupUtils.getInstance(NotesListActivity.this);
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new AsyncTask<Void, Void, Integer>() {
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@ -841,16 +882,27 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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}.execute();
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}
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/**
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* @return
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* 功能：判断是否正在同步
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*/
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private boolean isSyncMode() {
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return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0;
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}
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/**
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* 功能：跳转到PreferenceActivity界面
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*/
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private void startPreferenceActivity() {
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Activity from = getParent() != null ? getParent() : this;
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Intent intent = new Intent(from, NotesPreferenceActivity.class);
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from.startActivityIfNeeded(intent, -1);
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}
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/**
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* @author k
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* 函数功能：实现对便签列表项的点击事件（短按）
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*/
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private class OnListItemClickListener implements OnItemClickListener {
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public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
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@ -892,10 +944,13 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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}
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/**
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* 查询目标文件
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*/
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private void startQueryDestinationFolders() {
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String selection = NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>? AND " + NoteColumns.ID + "<>?";
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selection = (mState == ListEditState.NOTE_LIST) ? selection:
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"(" + selection + ") OR (" + NoteColumns.ID + "=" + Notes.ID_ROOT_FOLDER + ")";
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"(" + selection + ") OR (" + NoteColumns.ID + "=" + Notes.ID_ROOT_FOLDER + ")";
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mBackgroundQueryHandler.startQuery(FOLDER_LIST_QUERY_TOKEN,
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null,
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@ -910,6 +965,12 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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NoteColumns.MODIFIED_DATE + " DESC");
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}
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/* (non-Javadoc)
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* @see android.widget.AdapterView.OnItemLongClickListener#onItemLongClick(android.widget.AdapterView, android.view.View, int, long)
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* 长按某一项时进行的操作
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* 如果长按的是便签，则通过ActionMode菜单实现；如果长按的是文件夹，则通过ContextMenu菜单实现；
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* 具体ActionMOde菜单和ContextMenu菜单的详细见精度笔记
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*/
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public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
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if (view instanceof NotesListItem) {
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mFocusNoteDataItem = ((NotesListItem) view).getItemData();
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@ -926,4 +987,4 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
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}
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return false;
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}
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}
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}
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