diff --git a/doc/小米便签泛读报告.docx b/doc/小米便签泛读报告.docx index 2f01857..d18d5df 100644 Binary files a/doc/小米便签泛读报告.docx and b/doc/小米便签泛读报告.docx differ diff --git a/src/Notes/app/src/main/java/net/micode/notes/ui/NotesListActivity.java b/src/Notes/app/src/main/java/net/micode/notes/ui/NotesListActivity.java index edd9d4c..83d6548 100644 --- a/src/Notes/app/src/main/java/net/micode/notes/ui/NotesListActivity.java +++ b/src/Notes/app/src/main/java/net/micode/notes/ui/NotesListActivity.java @@ -1,19 +1,3 @@ -/* - * 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; @@ -77,8 +61,12 @@ 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; @@ -89,7 +77,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt 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 @@ -136,8 +124,13 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt 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(); @@ -148,26 +141,32 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } @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) { + // 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); @@ -180,7 +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) { @@ -190,11 +189,13 @@ 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"); @@ -209,18 +210,21 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt 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()); mDispatch = false; @@ -231,6 +235,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt mModeCallBack = new ModeCallback(); } + // 继承自ListView.MultiChoiceModeListener 和 OnMenuItemClickListener private class ModeCallback implements ListView.MultiChoiceModeListener, OnMenuItemClickListener { private DropdownMenu mDropDownMenu; private ActionMode mActionMode; @@ -259,7 +264,7 @@ 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; @@ -269,11 +274,12 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt 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()) { @@ -307,7 +313,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } public void onItemCheckedStateChanged(ActionMode mode, int position, long id, - boolean checked) { + boolean checked) { mNotesListAdapter.setCheckedItem(position, checked); updateMenu(); } @@ -347,52 +353,58 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt private class NewNoteOnTouchListener implements OnTouchListener { public boolean onTouch(View v, MotionEvent event) { - int action = event.getAction(); - if (action == 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(); + 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 + * 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; } - /** - * 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; + case MotionEvent.ACTION_MOVE: { + if (mDispatch) { + mDispatchY += (int) event.getY() - mOriginY; event.setLocation(event.getX(), mDispatchY); - mDispatch = true; return mNotesListView.dispatchTouchEvent(event); } + break; } - } else if (action == MotionEvent.ACTION_MOVE) { - if (mDispatch) { - mDispatchY += (int) event.getY() - mOriginY; - event.setLocation(event.getX(), mDispatchY); - return mNotesListView.dispatchTouchEvent(event); - } - } else { - if (mDispatch) { - event.setLocation(event.getX(), mDispatchY); - mDispatch = false; - return mNotesListView.dispatchTouchEvent(event); + default: { + if (mDispatch) { + event.setLocation(event.getX(), mDispatchY); + mDispatch = false; + return mNotesListView.dispatchTouchEvent(event); + } + break; } } return false; @@ -405,7 +417,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt : NORMAL_SELECTION; mBackgroundQueryHandler.startQuery(FOLDER_NOTE_LIST_QUERY_TOKEN, null, Notes.CONTENT_NOTE_URI, NoteItemData.PROJECTION, selection, new String[] { - String.valueOf(mCurrentFolderId) + String.valueOf(mCurrentFolderId) }, NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC"); } @@ -612,7 +624,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt values.put(NoteColumns.LOCAL_MODIFIED, 1); mContentResolver.update(Notes.CONTENT_NOTE_URI, values, NoteColumns.ID + "=?", new String[] { - String.valueOf(mFocusNoteDataItem.getId()) + String.valueOf(mFocusNoteDataItem.getId()) }); } } else if (!TextUtils.isEmpty(name)) { @@ -652,30 +664,38 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt }); } + /* (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() { - switch (mState) { - case SUB_FOLDER: - mCurrentFolderId = Notes.ID_ROOT_FOLDER; - mState = ListEditState.NOTE_LIST; - startAsyncNotesListQuery(); - mTitleBar.setVisibility(View.GONE); - break; - case CALL_RECORD_FOLDER: - mCurrentFolderId = Notes.ID_ROOT_FOLDER; - mState = ListEditState.NOTE_LIST; - mAddNewNote.setVisibility(View.VISIBLE); - mTitleBar.setVisibility(View.GONE); - startAsyncNotesListQuery(); - break; - case NOTE_LIST: - super.onBackPressed(); - break; - default: - break; - } + public void onBackPressed() { switch (mState) { + case SUB_FOLDER: + mCurrentFolderId = Notes.ID_ROOT_FOLDER; + mState = ListEditState.NOTE_LIST; + startAsyncNotesListQuery(); + mTitleBar.setVisibility(View.GONE); + break; + case CALL_RECORD_FOLDER: + mCurrentFolderId = Notes.ID_ROOT_FOLDER; + mState = ListEditState.NOTE_LIST; + mAddNewNote.setVisibility(View.VISIBLE); + mTitleBar.setVisibility(View.GONE); + startAsyncNotesListQuery(); + break; + case NOTE_LIST: + 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) { @@ -688,13 +708,16 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] { - appWidgetId + 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) { @@ -714,6 +737,10 @@ 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) { @@ -722,10 +749,10 @@ 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)); @@ -736,7 +763,7 @@ 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); @@ -793,12 +820,19 @@ 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() { @@ -841,16 +875,27 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt }.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) { @@ -892,10 +937,13 @@ 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 + ")"; + "(" + selection + ") OR (" + NoteColumns.ID + "=" + Notes.ID_ROOT_FOLDER + ")"; mBackgroundQueryHandler.startQuery(FOLDER_LIST_QUERY_TOKEN, null, @@ -910,6 +958,12 @@ 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(); @@ -926,4 +980,4 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt } return false; } -} +} \ No newline at end of file diff --git a/src/Notes/app/src/main/java/net/micode/notes/ui/NotesListAdapter.java b/src/Notes/app/src/main/java/net/micode/notes/ui/NotesListAdapter.java index 51c9cb9..b165769 100644 --- a/src/Notes/app/src/main/java/net/micode/notes/ui/NotesListAdapter.java +++ b/src/Notes/app/src/main/java/net/micode/notes/ui/NotesListAdapter.java @@ -1,19 +1,3 @@ -/* - * 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.content.Context; @@ -23,6 +7,7 @@ import android.view.View; import android.view.ViewGroup; import android.widget.CursorAdapter; + import net.micode.notes.data.Notes; import java.util.Collection; @@ -31,55 +16,94 @@ import java.util.HashSet; import java.util.Iterator; +/* + * 功能：直译为便签表连接器，继承了CursorAdapter，它为cursor和ListView提供了连接的桥梁。 + * 所以NotesListAdapter实现的是鼠标和编辑便签链接的桥梁 + */ public class NotesListAdapter extends CursorAdapter { private static final String TAG = "NotesListAdapter"; private Context mContext; private HashMap mSelectedIndex; - private int mNotesCount; - private boolean mChoiceMode; + private int mNotesCount; //便签数 + private boolean mChoiceMode; //选择模式标记 + /* + * 桌面widget的属性，包括编号和类型 + */ public static class AppWidgetAttribute { public int widgetId; public int widgetType; }; + /* + * 函数功能：初始化便签链接器 + * 函数实现：根据传进来的内容设置相关变量 + */ public NotesListAdapter(Context context) { - super(context, null); - mSelectedIndex = new HashMap(); + super(context, null); //父类对象置空 + mSelectedIndex = new HashMap(); //新建选项下标的hash表 mContext = context; mNotesCount = 0; } @Override + /* + * 函数功能：新建一个视图来存储光标所指向的数据 + * 函数实现：使用兄弟类NotesListItem新建一个项目选项 + */ public View newView(Context context, Cursor cursor, ViewGroup parent) { return new NotesListItem(context); } + /* + * 函数功能：将已经存在的视图和鼠标指向的数据进行捆绑 + * 函数实现：如下注释 + */ @Override public void bindView(View view, Context context, Cursor cursor) { if (view instanceof NotesListItem) { + //若view是NotesListItem的一个实例 NoteItemData itemData = new NoteItemData(context, cursor); ((NotesListItem) view).bind(context, itemData, mChoiceMode, isSelectedItem(cursor.getPosition())); + //则新建一个项目选项并且用bind跟将view和鼠标，内容，便签数据捆绑在一起 } } + /* + * 函数功能：设置勾选框 + * 函数实现：如下注释 + */ public void setCheckedItem(final int position, final boolean checked) { mSelectedIndex.put(position, checked); + //根据定位和是否勾选设置下标 notifyDataSetChanged(); + //在修改后刷新activity } + /* + * 函数功能：判断单选按钮是否勾选 + */ public boolean isInChoiceMode() { return mChoiceMode; } + /* + * 函数功能：设置单项选项框 + * 函数实现：重置下标并且根据参数mode设置选项 + */ public void setChoiceMode(boolean mode) { mSelectedIndex.clear(); mChoiceMode = mode; } + /* + * 函数功能：选择全部选项 + * 函数实现：如下注释 + */ public void selectAll(boolean checked) { Cursor cursor = getCursor(); + //获取光标位置 for (int i = 0; i < getCount(); i++) { if (cursor.moveToPosition(i)) { if (NoteItemData.getNoteType(cursor) == Notes.TYPE_NOTE) { @@ -87,30 +111,47 @@ public class NotesListAdapter extends CursorAdapter { } } } + //遍历所有光标可用的位置在判断为便签类型之后勾选单项框 } + /* + * 函数功能：建立选择项的下标列表 + * 函数实现：如下注释 + */ public HashSet getSelectedItemIds() { HashSet itemSet = new HashSet(); + //建立hash表 for (Integer position : mSelectedIndex.keySet()) { + //遍历所有的关键 if (mSelectedIndex.get(position) == true) { + //若光标位置可用 Long id = getItemId(position); if (id == Notes.ID_ROOT_FOLDER) { + //原文件不需要添加 Log.d(TAG, "Wrong item id, should not happen"); } else { itemSet.add(id); } + //则将id该下标假如选项集合中 + } } return itemSet; } + /* + * 函数功能：建立桌面Widget的选项表 + * 函数实现：如下注释 + */ public HashSet getSelectedWidget() { HashSet itemSet = new HashSet(); for (Integer position : mSelectedIndex.keySet()) { if (mSelectedIndex.get(position) == true) { Cursor c = (Cursor) getItem(position); + //以上4句和getSelectedItemIds一样，不再重复 if (c != null) { + //光标位置可用的话就建立新的Widget属性并编辑下标和类型，最后添加到选项集中 AppWidgetAttribute widget = new AppWidgetAttribute(); NoteItemData item = new NoteItemData(mContext, c); widget.widgetId = item.getWidgetId(); @@ -128,26 +169,42 @@ public class NotesListAdapter extends CursorAdapter { return itemSet; } + /* + * 函数功能：获取选项个数 + * 函数实现：如下注释 + */ public int getSelectedCount() { Collection values = mSelectedIndex.values(); + //首先获取选项下标的值 if (null == values) { return 0; } Iterator iter = values.iterator(); + //初始化叠加器 int count = 0; while (iter.hasNext()) { if (true == iter.next()) { + //若value值为真计数+1 count++; } } return count; } + /* + * 函数功能：判断是否全部选中 + * 函数实现：如下注释 + */ public boolean isAllSelected() { int checkedCount = getSelectedCount(); return (checkedCount != 0 && checkedCount == mNotesCount); + //获取选项数看是否等于便签的个数 } + /* + * 函数功能：判断是否为选项表 + * 函数实现：通过传递的下标来确定 + */ public boolean isSelectedItem(final int position) { if (null == mSelectedIndex.get(position)) { return false; @@ -156,29 +213,45 @@ public class NotesListAdapter extends CursorAdapter { } @Override + /* + * 函数功能：在activity内容发生局部变动的时候回调该函数计算便签的数量 + * 函数实现：如下注释 + */ protected void onContentChanged() { super.onContentChanged(); + //执行基类函数 calcNotesCount(); } @Override + /* + * 函数功能：在activity光标发生局部变动的时候回调该函数计算便签的数量 + */ public void changeCursor(Cursor cursor) { super.changeCursor(cursor); + //执行基类函数 calcNotesCount(); } + /* + * 函数功能：计算便签数量 + * + */ private void calcNotesCount() { mNotesCount = 0; for (int i = 0; i < getCount(); i++) { + //获取总数同时遍历 Cursor c = (Cursor) getItem(i); if (c != null) { if (NoteItemData.getNoteType(c) == Notes.TYPE_NOTE) { mNotesCount++; + //若该位置不为空并且文本类型为便签就+1 } } else { Log.e(TAG, "Invalid cursor"); return; } + //否则报错 } } -} +} \ No newline at end of file diff --git a/src/Notes/app/src/main/java/net/micode/notes/ui/NotesListItem.java b/src/Notes/app/src/main/java/net/micode/notes/ui/NotesListItem.java index 1221e80..fa8b3d2 100644 --- a/src/Notes/app/src/main/java/net/micode/notes/ui/NotesListItem.java +++ b/src/Notes/app/src/main/java/net/micode/notes/ui/NotesListItem.java @@ -1,19 +1,3 @@ -/* - * 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.content.Context; @@ -30,37 +14,43 @@ import net.micode.notes.tool.DataUtils; import net.micode.notes.tool.ResourceParser.NoteItemBgResources; +//创建便签列表项目选项 public class NotesListItem extends LinearLayout { - private ImageView mAlert; - private TextView mTitle; - private TextView mTime; - private TextView mCallName; - private NoteItemData mItemData; - private CheckBox mCheckBox; + private ImageView mAlert;//闹钟图片 + private TextView mTitle; //标题 + private TextView mTime; //时间 + private TextView mCallName; // + private NoteItemData mItemData; //标签数据 + private CheckBox mCheckBox; //打钩框 + /*初始化基本信息*/ public NotesListItem(Context context) { - super(context); - inflate(context, R.layout.note_item, this); + super(context); //super()它的主要作用是调整调用父类构造函数的顺序 + inflate(context, R.layout.note_item, this);//Inflate可用于将一个xml中定义的布局控件找出来,这里的xml是r。layout + //findViewById用于从contentView中查找指定ID的View，转换出来的形式根据需要而定; mAlert = (ImageView) findViewById(R.id.iv_alert_icon); mTitle = (TextView) findViewById(R.id.tv_title); mTime = (TextView) findViewById(R.id.tv_time); mCallName = (TextView) findViewById(R.id.tv_name); mCheckBox = (CheckBox) findViewById(android.R.id.checkbox); } - + ///根据data的属性对各个控件的属性的控制，主要是可见性Visibility，内容setText，格式setTextAppearance public void bind(Context context, NoteItemData data, boolean choiceMode, boolean checked) { if (choiceMode && data.getType() == Notes.TYPE_NOTE) { - mCheckBox.setVisibility(View.VISIBLE); - mCheckBox.setChecked(checked); + mCheckBox.setVisibility(View.VISIBLE); ///设置可见行为可见 + mCheckBox.setChecked(checked); ///格子打钩 } else { mCheckBox.setVisibility(View.GONE); } mItemData = data; + ///设置控件属性，一共三种情况，由data的id和父id是否与保存到文件夹的id一致来决定 if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) { mCallName.setVisibility(View.GONE); mAlert.setVisibility(View.VISIBLE); + //设置该textview的style mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem); + //settext为设置内容 mTitle.setText(context.getString(R.string.call_record_folder_name) + context.getString(R.string.format_folder_files_count, data.getNotesCount())); mAlert.setImageResource(R.drawable.call_record); @@ -69,8 +59,9 @@ public class NotesListItem extends LinearLayout { mCallName.setText(data.getCallName()); mTitle.setTextAppearance(context,R.style.TextAppearanceSecondaryItem); mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet())); + ///关于闹钟的设置 if (data.hasAlert()) { - mAlert.setImageResource(R.drawable.clock); + mAlert.setImageResource(R.drawable.clock);//图片来源的设置 mAlert.setVisibility(View.VISIBLE); } else { mAlert.setVisibility(View.GONE); @@ -78,45 +69,48 @@ public class NotesListItem extends LinearLayout { } else { mCallName.setVisibility(View.GONE); mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem); - + ///设置title格式 if (data.getType() == Notes.TYPE_FOLDER) { mTitle.setText(data.getSnippet() + context.getString(R.string.format_folder_files_count, - data.getNotesCount())); + data.getNotesCount())); mAlert.setVisibility(View.GONE); } else { mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet())); if (data.hasAlert()) { - mAlert.setImageResource(R.drawable.clock); + mAlert.setImageResource(R.drawable.clock);///设置图片来源 mAlert.setVisibility(View.VISIBLE); } else { mAlert.setVisibility(View.GONE); } } } - mTime.setText(DateUtils.getRelativeTimeSpanString(data.getModifiedDate())); + ///设置内容，获取相关时间，从data里编辑的日期中获取 + mTime. setText(DateUtils.getRelativeTimeSpanString(data.getModifiedDate())); setBackground(data); } - + //根据data的文件属性来设置背景 private void setBackground(NoteItemData data) { int id = data.getBgColorId(); + //，若是note型文件，则4种情况，对于4种不同情况的背景来源 if (data.getType() == Notes.TYPE_NOTE) { + //单个数据并且只有一个子文件夹 if (data.isSingle() || data.isOneFollowingFolder()) { setBackgroundResource(NoteItemBgResources.getNoteBgSingleRes(id)); - } else if (data.isLast()) { + } else if (data.isLast()) {//是最后一个数据 setBackgroundResource(NoteItemBgResources.getNoteBgLastRes(id)); - } else if (data.isFirst() || data.isMultiFollowingFolder()) { + } else if (data.isFirst() || data.isMultiFollowingFolder()) {//是一个数据并有多个子文件夹 setBackgroundResource(NoteItemBgResources.getNoteBgFirstRes(id)); } else { setBackgroundResource(NoteItemBgResources.getNoteBgNormalRes(id)); } } else { + //若不是note直接调用文件夹的背景来源 setBackgroundResource(NoteItemBgResources.getFolderBgRes()); } } - public NoteItemData getItemData() { return mItemData; } -} +} \ No newline at end of file diff --git a/src/Notes/app/src/main/java/net/micode/notes/ui/NotesPreferenceActivity.java b/src/Notes/app/src/main/java/net/micode/notes/ui/NotesPreferenceActivity.java index 07c5f7e..6f8a89f 100644 --- a/src/Notes/app/src/main/java/net/micode/notes/ui/NotesPreferenceActivity.java +++ b/src/Notes/app/src/main/java/net/micode/notes/ui/NotesPreferenceActivity.java @@ -1,19 +1,3 @@ -/* - * 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.accounts.Account; @@ -47,66 +31,92 @@ import net.micode.notes.data.Notes; import net.micode.notes.data.Notes.NoteColumns; import net.micode.notes.gtask.remote.GTaskSyncService; - +/* + *该类功能：NotesPreferenceActivity，在小米便签中主要实现的是对背景颜色和字体大小的数据储存。 + * 继承了PreferenceActivity主要功能为对系统信息和配置进行自动保存的Activity + */ public class NotesPreferenceActivity extends PreferenceActivity { public static final String PREFERENCE_NAME = "notes_preferences"; - + //优先名 public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name"; - + //同步账号 public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time"; - + //同步时间 public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear"; private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key"; - + //同步密码 private static final String AUTHORITIES_FILTER_KEY = "authorities"; - + //本地密码 private PreferenceCategory mAccountCategory; - + //账户分组 private GTaskReceiver mReceiver; - + //同步任务接收器 private Account[] mOriAccounts; - + //账户 private boolean mHasAddedAccount; + //账户的hash标记 @Override + /* + *函数功能：创建一个activity，在函数里要完成所有的正常静态设置 + *参数：Bundle icicle：存放了 activity 当前的状态 + *函数实现：如下注释 + */ protected void onCreate(Bundle icicle) { + //先执行父类的创建函数 super.onCreate(icicle); /* using the app icon for navigation */ getActionBar().setDisplayHomeAsUpEnabled(true); + //给左上角图标的左边加上一个返回的图标 addPreferencesFromResource(R.xml.preferences); + //添加xml来源并显示 xml mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY); + //根据同步账户关键码来初始化分组 mReceiver = new GTaskReceiver(); IntentFilter filter = new IntentFilter(); filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME); registerReceiver(mReceiver, filter); + //初始化同步组件 mOriAccounts = null; View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null); + //获取listvivew，ListView的作用:用于列出所有选择 getListView().addHeaderView(header, null, true); + //在listview组件上方添加其他组件 } @Override + /* + * 函数功能：activity交互功能的实现，用于接受用户的输入 + * 函数实现：如下注释 + */ protected void onResume() { + //先执行父类 的交互实现 super.onResume(); // need to set sync account automatically if user has added a new // account if (mHasAddedAccount) { + //若用户新加了账户则自动设置同步账户 Account[] accounts = getGoogleAccounts(); + //获取google同步账户 if (mOriAccounts != null && accounts.length > mOriAccounts.length) { + //若原账户不为空且当前账户有增加 for (Account accountNew : accounts) { boolean found = false; for (Account accountOld : mOriAccounts) { if (TextUtils.equals(accountOld.name, accountNew.name)) { + //更新账户 found = true; break; } } if (!found) { setSyncAccount(accountNew.name); + //若是没有找到旧的账户，那么同步账号中就只添加新账户 break; } } @@ -114,58 +124,83 @@ public class NotesPreferenceActivity extends PreferenceActivity { } refreshUI(); + //刷新标签界面 } @Override + /* + * 函数功能：销毁一个activity + * 函数实现：如下注释 + */ protected void onDestroy() { if (mReceiver != null) { unregisterReceiver(mReceiver); + //注销接收器 } super.onDestroy(); + //执行父类的销毁动作 } + /* + * 函数功能：重新设置账户信息 + * 函数实现：如下注释 + */ private void loadAccountPreference() { mAccountCategory.removeAll(); - + //销毁所有的分组 Preference accountPref = new Preference(this); + //建立首选项 final String defaultAccount = getSyncAccountName(this); accountPref.setTitle(getString(R.string.preferences_account_title)); accountPref.setSummary(getString(R.string.preferences_account_summary)); + //设置首选项的大标题和小标题 accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() { public boolean onPreferenceClick(Preference preference) { + //建立监听器 if (!GTaskSyncService.isSyncing()) { if (TextUtils.isEmpty(defaultAccount)) { // the first time to set account + //若是第一次建立账户显示选择账户提示对话框 showSelectAccountAlertDialog(); } else { // if the account has already been set, we need to promp // user about the risk + //若是已经建立则显示修改对话框并进行修改操作 showChangeAccountConfirmAlertDialog(); } } else { + //若在没有同步的情况下，则在toast中显示不能修改 Toast.makeText(NotesPreferenceActivity.this, - R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT) + R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT) .show(); } return true; } }); + //根据新建首选项编辑新的账户分组 mAccountCategory.addPreference(accountPref); } + /* + *函数功能：设置按键的状态和最后同步的时间 + *函数实现：如下注释 + */ private void loadSyncButton() { Button syncButton = (Button) findViewById(R.id.preference_sync_button); TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview); - + //获取同步按钮控件和最终同步时间的的窗口 // set button state + //设置按钮的状态 if (GTaskSyncService.isSyncing()) { + //若是在同步状态下 syncButton.setText(getString(R.string.preferences_button_sync_cancel)); syncButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { GTaskSyncService.cancelSync(NotesPreferenceActivity.this); } }); + //设置按钮显示的文本为“取消同步”以及监听器 } else { syncButton.setText(getString(R.string.preferences_button_sync_immediately)); syncButton.setOnClickListener(new View.OnClickListener() { @@ -173,50 +208,67 @@ public class NotesPreferenceActivity extends PreferenceActivity { GTaskSyncService.startSync(NotesPreferenceActivity.this); } }); + //若是不同步则设置按钮显示的文本为“立即同步”以及对应监听器 } syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this))); + //设置按键可用还是不可用 // set last sync time + // 设置最终同步时间 if (GTaskSyncService.isSyncing()) { + //若是在同步的情况下 lastSyncTimeView.setText(GTaskSyncService.getProgressString()); lastSyncTimeView.setVisibility(View.VISIBLE); + // 根据当前同步服务器设置时间显示框的文本以及可见性 } else { + //若是非同步情况 long lastSyncTime = getLastSyncTime(this); if (lastSyncTime != 0) { lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time, DateFormat.format(getString(R.string.preferences_last_sync_time_format), lastSyncTime))); lastSyncTimeView.setVisibility(View.VISIBLE); + //则根据最后同步时间的信息来编辑时间显示框的文本内容和可见性 } else { + //若时间为空直接设置为不可见状态 lastSyncTimeView.setVisibility(View.GONE); } } } - + /* + *函数功能：刷新标签界面 + *函数实现：调用上文设置账号和设置按键两个函数来实现 + */ private void refreshUI() { loadAccountPreference(); loadSyncButton(); } + /* + * 函数功能：显示账户选择的对话框并进行账户的设置 + * 函数实现：如下注释 + */ private void showSelectAccountAlertDialog() { AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this); + //创建一个新的对话框 View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null); TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title); titleTextView.setText(getString(R.string.preferences_dialog_select_account_title)); TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle); subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips)); - + //设置标题以及子标题的内容 dialogBuilder.setCustomTitle(titleView); dialogBuilder.setPositiveButton(null, null); - + //设置对话框的自定义标题，建立一个YES的按钮 Account[] accounts = getGoogleAccounts(); String defAccount = getSyncAccountName(this); - + //获取同步账户信息 mOriAccounts = accounts; mHasAddedAccount = false; if (accounts.length > 0) { + //若账户不为空 CharSequence[] items = new CharSequence[accounts.length]; final CharSequence[] itemMapping = items; int checkedItem = -1; @@ -224,83 +276,119 @@ public class NotesPreferenceActivity extends PreferenceActivity { for (Account account : accounts) { if (TextUtils.equals(account.name, defAccount)) { checkedItem = index; + //在账户列表中查询到所需账户 } items[index++] = account.name; } dialogBuilder.setSingleChoiceItems(items, checkedItem, + //在对话框建立一个单选的复选框 new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { setSyncAccount(itemMapping[which].toString()); dialog.dismiss(); + //取消对话框 refreshUI(); } + //设置点击后执行的事件，包括检录新同步账户和刷新标签界面 }); + //建立对话框网络版的监听器 } View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null); dialogBuilder.setView(addAccountView); + //给新加账户对话框设置自定义样式 final AlertDialog dialog = dialogBuilder.show(); + //显示对话框 addAccountView.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { mHasAddedAccount = true; + //将新加账户的hash置true Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS"); + //建立网络建立组件 intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] { - "gmail-ls" + "gmail-ls" }); startActivityForResult(intent, -1); + //跳回上一个选项 dialog.dismiss(); } }); + //建立新加账户对话框的监听器 } + /* + * 函数功能：显示账户选择对话框和相关账户操作 + * 函数实现：如下注释 + */ private void showChangeAccountConfirmAlertDialog() { AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this); - + //创建一个新的对话框 View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null); TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title); titleTextView.setText(getString(R.string.preferences_dialog_change_account_title, getSyncAccountName(this))); TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle); subtitleTextView.setText(getString(R.string.preferences_dialog_change_account_warn_msg)); + //根据同步修改的账户信息设置标题以及子标题的内容 dialogBuilder.setCustomTitle(titleView); - + //设置对话框的自定义标题 CharSequence[] menuItemArray = new CharSequence[] { getString(R.string.preferences_menu_change_account), getString(R.string.preferences_menu_remove_account), getString(R.string.preferences_menu_cancel) }; + //定义一些标记字符串 dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() { + //设置对话框要显示的一个list，用于显示几个命令时,即change，remove，cancel public void onClick(DialogInterface dialog, int which) { + //按键功能，由which来决定 if (which == 0) { + //进入账户选择对话框 showSelectAccountAlertDialog(); } else if (which == 1) { + //删除账户并且跟新便签界面 removeSyncAccount(); refreshUI(); } } }); dialogBuilder.show(); + //显示对话框 } + /* + *函数功能：获取谷歌账户 + *函数实现：通过账户管理器直接获取 + */ private Account[] getGoogleAccounts() { AccountManager accountManager = AccountManager.get(this); return accountManager.getAccountsByType("com.google"); } + /* + * 函数功能：设置同步账户 + * 函数实现：如下注释： + */ private void setSyncAccount(String account) { if (!getSyncAccountName(this).equals(account)) { + //假如该账号不在同步账号列表中 SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE); SharedPreferences.Editor editor = settings.edit(); + //编辑共享的首选项 if (account != null) { editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, account); } else { editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, ""); } + //将该账号加入到首选项中 + editor.commit(); + //提交修改的数据 + - // clean up last sync time setLastSyncTime(this, 0); + //将最后同步时间清零 // clean up local gtask related info new Thread(new Runnable() { @@ -311,23 +399,33 @@ public class NotesPreferenceActivity extends PreferenceActivity { getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null); } }).start(); + //重置当地同步任务的信息 Toast.makeText(NotesPreferenceActivity.this, getString(R.string.preferences_toast_success_set_accout, account), Toast.LENGTH_SHORT).show(); + //将toast的文本信息置为“设置账户成功”并显示出来 } } - + /* + * 函数功能：删除同步账户 + * 函数实现：如下注释： + */ private void removeSyncAccount() { SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE); SharedPreferences.Editor editor = settings.edit(); + //设置共享首选项 + if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) { editor.remove(PREFERENCE_SYNC_ACCOUNT_NAME); + //假如当前首选项中有账户就删除 } if (settings.contains(PREFERENCE_LAST_SYNC_TIME)) { editor.remove(PREFERENCE_LAST_SYNC_TIME); + //删除当前首选项中有账户时间 } editor.commit(); + //提交更新后的数据 // clean up local gtask related info new Thread(new Runnable() { @@ -338,51 +436,79 @@ public class NotesPreferenceActivity extends PreferenceActivity { getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null); } }).start(); + //重置当地同步任务的信息 } + /* + * 函数功能：获取同步账户名称 + * 函数实现：通过共享的首选项里的信息直接获取 + */ public static String getSyncAccountName(Context context) { SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE); return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, ""); } + /* + * 函数功能：设置最终同步的时间 + * 函数实现：如下注释 + */ public static void setLastSyncTime(Context context, long time) { SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE); SharedPreferences.Editor editor = settings.edit(); + // 从共享首选项中找到相关账户并获取其编辑器 editor.putLong(PREFERENCE_LAST_SYNC_TIME, time); editor.commit(); + //编辑最终同步时间并提交更新 } - + /* + * 函数功能：获取最终同步时间 + * 函数实现：通过共享的首选项里的信息直接获取 + */ public static long getLastSyncTime(Context context) { SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE); return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0); } + /* + * 函数功能：接受同步信息 + * 函数实现：继承BroadcastReceiver + */ private class GTaskReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { refreshUI(); if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) { + //获取随广播而来的Intent中的同步服务的数据 TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview); syncStatus.setText(intent .getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG)); + //通过获取的数据在设置系统的状态 } } } + /* + * 函数功能：处理菜单的选项 + * 函数实现：如下注释 + * 参数:MenuItem菜单选项 + */ public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { + //根据选项的id选择，这里只有一个主页 case android.R.id.home: Intent intent = new Intent(this, NotesListActivity.class); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); startActivity(intent); return true; + //在主页情况下在创建连接组件intent，发出清空的信号并开始一个相应的activity default: return false; } } } + \ No newline at end of file