From ea6065294ff448b5d3156cd5ed3001f2f30b75fa Mon Sep 17 00:00:00 2001 From: pt3s6koz5 <2636355151@qq.com> Date: Mon, 22 Jan 2024 11:01:05 +0800 Subject: [PATCH] Update NotesListActivity.java --- .../micode/notes/ui/NotesListActivity.java | 352 +++++++++--------- 1 file changed, 181 insertions(+), 171 deletions(-) diff --git a/src/MiNotes-master/app/src/main/java/net/micode/notes/ui/NotesListActivity.java b/src/MiNotes-master/app/src/main/java/net/micode/notes/ui/NotesListActivity.java index 2fa42ce..1e6b10d 100644 --- a/src/MiNotes-master/app/src/main/java/net/micode/notes/ui/NotesListActivity.java +++ b/src/MiNotes-master/app/src/main/java/net/micode/notes/ui/NotesListActivity.java @@ -1,22 +1,5 @@ -/* - * 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.R.menu; + import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; @@ -60,6 +43,7 @@ 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; @@ -71,104 +55,118 @@ import net.micode.notes.tool.ResourceParser; 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; - -public class NotesListActivity extends Activity implements OnClickListener, OnItemLongClickListener { +//主界面，一进入就是这个界面 +/** + * @author k + * + */ +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 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; - - private static final String PREFERENCE_ADD_INTRODUCTION = "net.micode.notes.introduction"; - + + private static final String PREFERENCE_ADD_INTRODUCTION = "net.micode.notes.introduction"; //单行超过80个字符 + 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 Button mMenuSet; - + 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; - + 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)"; - + 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); + // 创建类 + 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。 + // final类不能被继承，没有子类，final类中的方法默认是final的。 + //final方法不能被子类的方法覆盖，但可以被继承。 + //final成员变量表示常量，只能被赋值一次，赋值后值不再改变。 + //final不能用于修饰构造方法。 + super.onCreate(savedInstanceState); // 调用父类的onCreate函数 setContentView(R.layout.note_list); initResources(); - + /** * Insert an introduction when user firstly use this application */ setAppInfoFromRawRes(); } - + @Override + // 返回一些子模块完成的数据交给主Activity处理 protected void onActivityResult(int requestCode, int resultCode, Intent data) { - if (resultCode == RESULT_OK + // 结果值 和 要求值 符合要求 + if (resultCode == RESULT_OK && (requestCode == REQUEST_CODE_OPEN_NODE || requestCode == REQUEST_CODE_NEW_NODE)) { mNotesListAdapter.changeCursor(null); } else { super.onActivityResult(requestCode, resultCode, data); + // 调用 Activity 的onActivityResult（） } } - + private void setAppInfoFromRawRes() { + // 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。 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); + // 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, + // 以openRawResource方法（不带后缀的资源文件名）打开这个文件。 + in = getResources().openRawResource(R.raw.introduction); if (in != null) { InputStreamReader isr = new InputStreamReader(in); BufferedReader br = new BufferedReader(isr); - char [] buf = new char[1024]; + char [] buf = new char[1024]; // 自行定义的数值，使用者不知道有什么意义 int len = 0; while ((len = br.read(buf)) > 0) { sb.append(buf, 0, len); @@ -181,7 +179,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt e.printStackTrace(); return; } finally { - if(in != null) { + if (in != null) { try { in.close(); } catch (IOException e) { @@ -190,12 +188,14 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } } } - + + // 创建空的WorkingNote 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()) { + // 更新保存note的信息 sp.edit().putBoolean(PREFERENCE_ADD_INTRODUCTION, true).commit(); } else { Log.e(TAG, "Save introduction note error"); @@ -203,28 +203,30 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } } } - + @Override protected void onStart() { super.onStart(); startAsyncNotesListQuery(); } - + + // 初始化资源 private void initResources() { - mContentResolver = this.getContentResolver(); + mContentResolver = this.getContentResolver(); // 获取应用程序的数据，得到类似数据表的东西 mBackgroundQueryHandler = new BackgroundQueryHandler(this.getContentResolver()); mCurrentFolderId = Notes.ID_ROOT_FOLDER; - mNotesListView = (ListView) findViewById(R.id.notes_list); + + // findViewById 是安卓编程的定位函数，主要是引用.R文件里的引用名 + mNotesListView = (ListView) findViewById(R.id.notes_list); // 绑定XML中的ListView，作为Item的容器 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 = (Button) findViewById(R.id.btn_new_note);// 在activity中要获取该按钮 mAddNewNote.setOnClickListener(this); mAddNewNote.setOnTouchListener(new NewNoteOnTouchListener()); - mMenuSet = (Button) findViewById(R.id.btn_set); mDispatch = false; mDispatchY = 0; mOriginY = 0; @@ -232,16 +234,15 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt mState = ListEditState.NOTE_LIST; mModeCallBack = new ModeCallback(); } - + + // 继承自ListView.MultiChoiceModeListener 和 OnMenuItemClickListener private class ModeCallback implements ListView.MultiChoiceModeListener, OnMenuItemClickListener { private DropdownMenu mDropDownMenu; private ActionMode mActionMode; - private Menu menu; private MenuItem mMoveMenu; - + public boolean onCreateActionMode(ActionMode mode, Menu menu) { getMenuInflater().inflate(R.menu.note_list_options, menu); - this.menu = menu; menu.findItem(R.id.delete).setOnMenuItemClickListener(this); mMoveMenu = menu.findItem(R.id.move); if (mFocusNoteDataItem.getParentId() == Notes.ID_CALL_RECORD_FOLDER @@ -255,8 +256,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt mNotesListAdapter.setChoiceMode(true); mNotesListView.setLongClickable(false); mAddNewNote.setVisibility(View.GONE); - mMenuSet.setVisibility(View.GONE); - + View customView = LayoutInflater.from(NotesListActivity.this).inflate( R.layout.note_list_dropdown_menu, null); mode.setCustomView(customView); @@ -264,21 +264,22 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt (Button) customView.findViewById(R.id.selection_menu), R.menu.note_list_dropdown); mDropDownMenu.setOnDropdownMenuItemClickListener(new PopupMenu.OnMenuItemClickListener(){ - public boolean onMenuItemClick(MenuItem item) { + public boolean onMenuItemClick(final MenuItem item) { mNotesListAdapter.selectAll(!mNotesListAdapter.isAllSelected()); updateMenu(); return true; } - + }); return true; } - + + // 更新菜单 private void updateMenu() { int selectedCount = mNotesListAdapter.getSelectedCount(); // Update dropdown menu String format = getResources().getString(R.string.menu_select_title, selectedCount); - mDropDownMenu.setTitle(format); + mDropDownMenu.setTitle(format); // 更改标题 MenuItem item = mDropDownMenu.findItem(R.id.action_select_all); if (item != null) { if (mNotesListAdapter.isAllSelected()) { @@ -290,63 +291,40 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } } } - + public boolean onPrepareActionMode(ActionMode mode, Menu menu) { // TODO Auto-generated method stub return false; } - + public boolean onActionItemClicked(ActionMode mode, MenuItem item) { // TODO Auto-generated method stub return false; } - + public void onDestroyActionMode(ActionMode mode) { mNotesListAdapter.setChoiceMode(false); - mNotesListView.clearChoices(); - mNotesListView.setItemChecked(0,true); - mNotesListView.setItemChecked(0,false); - mNotesListView.setLongClickable(true); - System.out.println("-----------------onDestroyActionMode------------------"); - mNotesListAdapter.notifyDataSetChanged(); -// closeOptionsMenu(); -// mNotesListView.invalidate(); mAddNewNote.setVisibility(View.VISIBLE); - mMenuSet.setVisibility(View.VISIBLE); - - - -// mNotesListView.setChoiceMode(ListView.CHOICE_MODE_NONE); - -// menu.clear(); -// menu.close(); } - - - + public void finishActionMode() { mActionMode.finish(); - mActionMode = null; - mNotesListAdapter.setChoiceMode(false); - mNotesListView.setLongClickable(true); } - - - + public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) { mNotesListAdapter.setCheckedItem(position, checked); updateMenu(); } - + public boolean onMenuItemClick(MenuItem item) { if (mNotesListAdapter.getSelectedCount() == 0) { Toast.makeText(NotesListActivity.this, getString(R.string.menu_select_none), Toast.LENGTH_SHORT).show(); return true; } - + switch (item.getItemId()) { case R.id.delete: AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this); @@ -373,10 +351,9 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt return true; } } - - + private class NewNoteOnTouchListener implements OnTouchListener { - + public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: { @@ -395,7 +372,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt /** * 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） + * "New Note" button could be expressed by formula y=-0.12x+94锛圲nit:pixel锛� * 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 @@ -434,9 +411,9 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } return false; } - + }; - + private void startAsyncNotesListQuery() { String selection = (mCurrentFolderId == Notes.ID_ROOT_FOLDER) ? ROOT_FOLDER_SELECTION : NORMAL_SELECTION; @@ -445,12 +422,12 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt String.valueOf(mCurrentFolderId) }, NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC"); } - + private final class BackgroundQueryHandler extends AsyncQueryHandler { public BackgroundQueryHandler(ContentResolver contentResolver) { super(contentResolver); } - + @Override protected void onQueryComplete(int token, Object cookie, Cursor cursor) { switch (token) { @@ -469,13 +446,13 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } } } - + 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, mNotesListAdapter.getSelectedItemIds(), adapter.getItemId(which)); @@ -490,14 +467,14 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt }); builder.show(); } - + 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) { @@ -519,7 +496,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } return widgets; } - + @Override protected void onPostExecute(HashSet widgets) { if (widgets != null) { @@ -534,13 +511,13 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } }.execute(); } - + 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, @@ -561,21 +538,20 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } } } - + 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); } - + 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); - mMenuSet.setVisibility(View.GONE); } else { mState = ListEditState.SUB_FOLDER; } @@ -586,7 +562,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } mTitleBar.setVisibility(View.VISIBLE); } - + public void onClick(View v) { switch (v.getId()) { case R.id.btn_new_note: @@ -596,19 +572,19 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt break; } } - + private void showSoftInput() { InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); if (inputMethodManager != null) { inputMethodManager.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0); } } - + private void hideSoftInput(View view) { InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0); } - + 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); @@ -626,14 +602,14 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt 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() { @@ -666,7 +642,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt dialog.dismiss(); } }); - + if (TextUtils.isEmpty(etName.getText())) { positive.setEnabled(false); } @@ -676,9 +652,9 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt 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); @@ -686,19 +662,20 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt positive.setEnabled(true); } } - + public void afterTextChanged(Editable s) { // TODO Auto-generated method stub - + } }); } - + + /* (non-Javadoc) + * @see android.app.Activity#onBackPressed() + * 按返回键时根据情况更改类中的数据 + */ @Override - public void onBackPressed() { - - System.out.println("-------onBackPressed---00000"); - switch (mState) { + public void onBackPressed() { switch (mState) { case SUB_FOLDER: mCurrentFolderId = Notes.ID_ROOT_FOLDER; mState = ListEditState.NOTE_LIST; @@ -709,19 +686,22 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt mCurrentFolderId = Notes.ID_ROOT_FOLDER; mState = ListEditState.NOTE_LIST; mAddNewNote.setVisibility(View.VISIBLE); - mMenuSet.setVisibility(View.VISIBLE); mTitleBar.setVisibility(View.GONE); startAsyncNotesListQuery(); break; case NOTE_LIST: - System.out.println("-------onBackPressed---"); super.onBackPressed(); break; default: break; } } - + + /** + * @param appWidgetId + * @param appWidgetType + * 根据不同类型的widget更新插件，通过intent传送数据 + */ private void updateWidget(int appWidgetId, int appWidgetType) { Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); if (appWidgetType == Notes.TYPE_WIDGET_2X) { @@ -732,15 +712,18 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt Log.e(TAG, "Unspported widget type"); return; } - + intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] { appWidgetId }); - + sendBroadcast(intent); setResult(RESULT_OK, intent); } - + + /** + * 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； + */ private final OnCreateContextMenuListener mFolderOnCreateContextMenuListener = new OnCreateContextMenuListener() { public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { if (mFocusNoteDataItem != null) { @@ -751,7 +734,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } } }; - + @Override public void onContextMenuClosed(Menu menu) { if (mNotesListView != null) { @@ -759,7 +742,11 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } super.onContextMenuClosed(menu); } - + + /* (non-Javadoc) + * @see android.app.Activity#onContextItemSelected(android.view.MenuItem) + * 针对menu中不同的选择进行不同的处理，里面详细注释 + */ @Override public boolean onContextItemSelected(MenuItem item) { if (mFocusNoteDataItem == null) { @@ -768,10 +755,10 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } switch (item.getItemId()) { case MENU_FOLDER_VIEW: - openFolder(mFocusNoteDataItem); + openFolder(mFocusNoteDataItem);//打开对应文件 break; case MENU_FOLDER_DELETE: - AlertDialog.Builder builder = new AlertDialog.Builder(this); + AlertDialog.Builder builder = new AlertDialog.Builder(this);//设置确认是否删除的对话框 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)); @@ -782,7 +769,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } }); builder.setNegativeButton(android.R.string.cancel, null); - builder.show(); + builder.show();//显示对话框 break; case MENU_FOLDER_CHANGE_NAME: showCreateOrModifyFolderDialog(false); @@ -790,10 +777,10 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt default: break; } - + return true; } - + @Override public boolean onPrepareOptionsMenu(Menu menu) { menu.clear(); @@ -811,7 +798,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } return true; } - + @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { @@ -851,22 +838,29 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } return true; } - + + /* (non-Javadoc) + * @see android.app.Activity#onSearchRequested() + * 直接调用startSearch函数 + */ @Override public boolean onSearchRequested() { startSearch(null, false, null /* appData */, false); return true; } - + + /** + * 函数功能：实现将便签导出到文本功能 + */ 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) { @@ -896,22 +890,33 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt builder.show(); } } - + }.execute(); } - + + /** + * @return + * 功能：判断是否正在同步 + */ private boolean isSyncMode() { return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0; } - + + /** + * 功能：跳转到PreferenceActivity界面 + */ private void startPreferenceActivity() { Activity from = getParent() != null ? getParent() : this; Intent intent = new Intent(from, NotesPreferenceActivity.class); from.startActivityIfNeeded(intent, -1); } - + + /** + * @author k + * 函数功能：实现对便签列表项的点击事件（短按） + */ private class OnListItemClickListener implements OnItemClickListener { - + public void onItemClick(AdapterView parent, View view, int position, long id) { if (view instanceof NotesListItem) { NoteItemData item = ((NotesListItem) view).getItemData(); @@ -923,7 +928,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } return; } - + switch (mState) { case NOTE_LIST: if (item.getType() == Notes.TYPE_FOLDER @@ -948,14 +953,17 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } } } - + } - + + /** + * 查询目标文件 + */ 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, @@ -968,7 +976,13 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt }, NoteColumns.MODIFIED_DATE + " DESC"); } - + + /* (non-Javadoc) + * @see android.widget.AdapterView.OnItemLongClickListener#onItemLongClick(android.widget.AdapterView, android.view.View, int, long) + * 长按某一项时进行的操作 + * 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； + * 具体ActionMOde菜单和ContextMenu菜单的详细见精度笔记 + */ public boolean onItemLongClick(AdapterView parent, View view, int position, long id) { if (view instanceof NotesListItem) { mFocusNoteDataItem = ((NotesListItem) view).getItemData(); @@ -985,8 +999,4 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } return false; } - - public void OnOpenMenu(View view) { - openOptionsMenu(); - } -} +} \ No newline at end of file