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wukunwei 2 years ago
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许超雨/model/Note.java
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/*
* 单个便签项
* 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.model;//包名
import android.content.ContentProviderOperation;//批量的更新、插入、删除数据
import android.content.ContentProviderResult;//操作结果
import android.content.ContentUris;//添加或者修改uri后面的ID
import android.content.ContentValues;//存储基本数据类型的数据
import android.content.Context;// 获取调用内容
import android.content.OperationApplicationException;//操作数据容错
import android.net.Uri;//Uri相关操作，标识唯一的资源
import android.os.RemoteException;//异常处理
import android.util.Log;//输出日志，比如说出错、警告等
import net.micode.notes.data.Notes;//小米便签一些属性的操作
import net.micode.notes.data.Notes.CallNote;//调用操作
import net.micode.notes.data.Notes.DataColumns;//数据栏
import net.micode.notes.data.Notes.NoteColumns;//笔记栏
import net.micode.notes.data.Notes.TextNote;//操作区
import java.util.ArrayList;//导入Java,util,ArrayList
public class Note {//定义note类，处理单个便签
private ContentValues mNoteDiffValues;//声明一个ContentValues私有变量ContentValues，用来存储note与上次修改后的改动
private NoteData mNoteData;//声明一个私有变量NoteData，用来记录单个便签的基本信息
private static final String TAG = "Note";//设置软件标签
/**
* Create a new note id for adding a new note to databases
*/
public static synchronized long getNewNoteId(Context context, long folderId) {
//Create a new note in the database
/*
* 作用：为新便签在数据库里边创建一个新的ID
* 实现：创建一个内容集合，存入创建便签的时间，最后修改的时间，再根据当前便签所处的上下文和文件夹的ID，从内容解析器中得到的路径uri里面
* 获取新的便签的ID。最后判断ID是否合法，然后返回
* 参数：@context：便签所处的上下文
* @folderId：所处的便签文件夹ID
* @return：新创建便签的ID
*/
ContentValues values = new ContentValues();
long createdTime = System.currentTimeMillis();
values.put(NoteColumns.CREATED_DATE, createdTime);
values.put(NoteColumns.MODIFIED_DATE, createdTime);
values.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
values.put(NoteColumns.LOCAL_MODIFIED, 1);
values.put(NoteColumns.PARENT_ID, folderId);
Uri uri = context.getContentResolver().insert(Notes.CONTENT_NOTE_URI, values);
long noteId = 0;
try {
noteId = Long.valueOf(uri.getPathSegments().get(1));
} catch (NumberFormatException e) {
Log.e(TAG, "Get note id error :" + e.toString());
noteId = 0;
}
if (noteId == -1) {
throw new IllegalStateException("Wrong note id:" + noteId);
}
return noteId;
}
public Note() {//定义两个变量用来存储便签的数据，一个是存储便签属性、一个是存储便签内容
mNoteDiffValues = new ContentValues();
mNoteData = new NoteData();
}
public void setNoteValue(String key, String value) {
/*
* 作用：设置便签的属性
* 实现：通过传入key，指定修改便签的属性；传入value，指定修改的值，通过属性管理器mNoteDiffValues写入。最后，改变最后修改时间
* 参数：@key：要修改的属性
* @value：要修改的值
*/
mNoteDiffValues.put(key, value);
mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
}
public void setTextData(String key, String value) {//设置数据库表格的标签文本内容的数据
mNoteData.setTextData(key, value);
}
public void setTextDataId(long id) {//设置文本数据的ID
mNoteData.setTextDataId(id);
}
public long getTextDataId() {//获取文本数据的ID
return mNoteData.mTextDataId;
}
public void setCallDataId(long id) {//设置电话号码数据的ID
mNoteData.setCallDataId(id);
}
public void setCallData(String key, String value) {//设置电话号码的数据
mNoteData.setCallData(key, value);
}
public boolean isLocalModified() {//判断便签是否进行了本地修改
return mNoteDiffValues.size() > 0 || mNoteData.isLocalModified();
}
public boolean syncNote(Context context, long noteId) {//判断对修改过的便签是否进行同步
if (noteId <= 0) {
throw new IllegalArgumentException("Wrong note id:" + noteId);
}
if (!isLocalModified()) {
return true;
}
/**
* In theory, once data changed, the note should be updated on {@link NoteColumns#LOCAL_MODIFIED} and
* {@link NoteColumns#MODIFIED_DATE}. For data safety, though update note fails, we also update the
* note data info
*/
if (context.getContentResolver().update(
ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), mNoteDiffValues, null,
null) == 0) {
Log.e(TAG, "Update note error, should not happen");
// Do not return, fall through
}
mNoteDiffValues.clear();
if (mNoteData.isLocalModified()
&& (mNoteData.pushIntoContentResolver(context, noteId) == null)) {
return false;
}
return true;
}
private class NoteData {//定义一个基本的便签内容的数据类，主要包含文本数据和电话号码数据
private long mTextDataId;//文本数据id
private ContentValues mTextDataValues;//文本数据内容
private long mCallDataId;//电话号码数据ID
private ContentValues mCallDataValues;//电话号码数据内容
private static final String TAG = "NoteData";//默认构造函数
public NoteData() {//NoteData的构造函数，初始化四个变量
mTextDataValues = new ContentValues();
mCallDataValues = new ContentValues();
mTextDataId = 0;
mCallDataId = 0;
}
boolean isLocalModified() {//判断是否本地修改
return mTextDataValues.size() > 0 || mCallDataValues.size() > 0;
}
void setTextDataId(long id) {//设置文本数据的ID
if(id <= 0) {
throw new IllegalArgumentException("Text data id should larger than 0");
}
mTextDataId = id;
}
void setCallDataId(long id) {//设置电话号码对应的id
if (id <= 0) {
throw new IllegalArgumentException("Call data id should larger than 0");
}
mCallDataId = id;
}
void setCallData(String key, String value) {//设置电话号码数据内容，并且保存修改时间
mCallDataValues.put(key, value);
mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
}
void setTextData(String key, String value) {//设置文本数据
mTextDataValues.put(key, value);
mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
}
Uri pushIntoContentResolver(Context context, long noteId) {//使用uri将数据添加到数据库
/**
* Check for safety
*/
if (noteId <= 0) {//判断数据是否合法
throw new IllegalArgumentException("Wrong note id:" + noteId);
}
ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
ContentProviderOperation.Builder builder = null;
if(mTextDataValues.size() > 0) {//把文本数据存入DataColumns
mTextDataValues.put(DataColumns.NOTE_ID, noteId);
if (mTextDataId == 0) {//文本数据ID为零，意味着这个id是新建默认的id
mTextDataValues.put(DataColumns.MIME_TYPE, TextNote.CONTENT_ITEM_TYPE);
Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
mTextDataValues);
try {
setTextDataId(Long.valueOf(uri.getPathSegments().get(1)));
} catch (NumberFormatException e) {
Log.e(TAG, "Insert new text data fail with noteId" + noteId);
mTextDataValues.clear();
return null;
}
} else {
builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
Notes.CONTENT_DATA_URI, mTextDataId));
builder.withValues(mTextDataValues);
operationList.add(builder.build());
}
mTextDataValues.clear();
}
if(mCallDataValues.size() > 0) {//电话号码同步
mCallDataValues.put(DataColumns.NOTE_ID, noteId);
if (mCallDataId == 0) {//将电话号码的id设定为uri提供的id
mCallDataValues.put(DataColumns.MIME_TYPE, CallNote.CONTENT_ITEM_TYPE);
Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
mCallDataValues);
try {
setCallDataId(Long.valueOf(uri.getPathSegments().get(1)));
} catch (NumberFormatException e) {
Log.e(TAG, "Insert new call data fail with noteId" + noteId);
mCallDataValues.clear();
return null;
}
} else {//当电话号码不为新建时，更新电话号码ID
builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
Notes.CONTENT_DATA_URI, mCallDataId));
builder.withValues(mCallDataValues);
operationList.add(builder.build());
}
mCallDataValues.clear();
}
if (operationList.size() > 0) {//存储过程中如果遇到异常，通过如下进行处理
try {//抛出远程异常，并写回日志
ContentProviderResult[] results = context.getContentResolver().applyBatch(
Notes.AUTHORITY, operationList);
return (results == null || results.length == 0 || results[0] == null) ? null
: ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId);
} catch (RemoteException e) {//捕捉操作异常并写回日志
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
return null;
} catch (OperationApplicationException e) {
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));//异常日志
return null;
}
}
return null;
}
}
}

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许超雨/model/WorkingNote.java
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/*当前活动便签项
* 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.model;//在model包中
import android.appwidget.AppWidgetManager;//需要调用的其他类
import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.text.TextUtils;
import android.util.Log;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.CallNote;
import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.DataConstants;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.data.Notes.TextNote;
import net.micode.notes.tool.ResourceParser.NoteBgResources;
public class WorkingNote {/*声明WorkingNote类,创建小米便签的主要类，
包括创建空便签，保存便签，加载小米便签内容，和设置小米便签的一些小部件之类的操作*/
// Note for the working note
private Note mNote;
// Note Id
private long mNoteId;
// Note content
private String mContent;
// Note mode
private int mMode;
private long mAlertDate;
private long mModifiedDate;
private int mBgColorId;
private int mWidgetId;
private int mWidgetType;
private long mFolderId;
private Context mContext;
private static final String TAG = "WorkingNote";
private boolean mIsDeleted;
private NoteSettingChangedListener mNoteSettingStatusListener;
public static final String[] DATA_PROJECTION = new String[] {/*声明NOTE_PROJECTION字符串数组，
用于存储数据信息。*/
DataColumns.ID,
DataColumns.CONTENT,
DataColumns.MIME_TYPE,
DataColumns.DATA1,
DataColumns.DATA2,
DataColumns.DATA3,
DataColumns.DATA4,
};
public static final String[] NOTE_PROJECTION = new String[] {//保存便签属性信息的string数组
NoteColumns.PARENT_ID,
NoteColumns.ALERTED_DATE,
NoteColumns.BG_COLOR_ID,
NoteColumns.WIDGET_ID,
NoteColumns.WIDGET_TYPE,
NoteColumns.MODIFIED_DATE
};
private static final int DATA_ID_COLUMN = 0;//以下定义的是上述两个列表中各元素的索引
private static final int DATA_CONTENT_COLUMN = 1;
private static final int DATA_MIME_TYPE_COLUMN = 2;
private static final int DATA_MODE_COLUMN = 3;
private static final int NOTE_PARENT_ID_COLUMN = 0;
private static final int NOTE_ALERTED_DATE_COLUMN = 1;
private static final int NOTE_BG_COLOR_ID_COLUMN = 2;
private static final int NOTE_WIDGET_ID_COLUMN = 3;
private static final int NOTE_WIDGET_TYPE_COLUMN = 4;
private static final int NOTE_MODIFIED_DATE_COLUMN = 5;
// New note construct
private WorkingNote(Context context, long folderId) {//初始化WorkingNote类的内部数据变量
mContext = context;
mAlertDate = 0;
mModifiedDate = System.currentTimeMillis();//获取系统当前时间的方法，返回当前时间
mFolderId = folderId;
mNote = new Note();//加载一个已存在的便签
mNoteId = 0;
mIsDeleted = false;
mMode = 0;
mWidgetType = Notes.TYPE_WIDGET_INVALIDE;//默认是不可见
}
// Existing note construct
private WorkingNote(Context context, long noteId, long folderId) {//载入便签
mContext = context;
mNoteId = noteId;
mFolderId = folderId;
mIsDeleted = false;
mNote = new Note();
loadNote();
}
private void loadNote() {//加载已有的便签
Cursor cursor = mContext.getContentResolver().query(
ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mNoteId), NOTE_PROJECTION, null,
null, null);
if (cursor != null) {
if (cursor.moveToFirst()) {
mFolderId = cursor.getLong(NOTE_PARENT_ID_COLUMN);
mBgColorId = cursor.getInt(NOTE_BG_COLOR_ID_COLUMN);
mWidgetId = cursor.getInt(NOTE_WIDGET_ID_COLUMN);
mWidgetType = cursor.getInt(NOTE_WIDGET_TYPE_COLUMN);
mAlertDate = cursor.getLong(NOTE_ALERTED_DATE_COLUMN);
mModifiedDate = cursor.getLong(NOTE_MODIFIED_DATE_COLUMN);
}
cursor.close();
} else {
Log.e(TAG, "No note with id:" + mNoteId);
throw new IllegalArgumentException("Unable to find note with id " + mNoteId);
}
loadNoteData();
}
private void loadNoteData() {//加载便签数据
Cursor cursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI, DATA_PROJECTION,
DataColumns.NOTE_ID + "=?", new String[] {
String.valueOf(mNoteId)
}, null);
if (cursor != null) {
if (cursor.moveToFirst()) {
do {
String type = cursor.getString(DATA_MIME_TYPE_COLUMN);
if (DataConstants.NOTE.equals(type)) {
mContent = cursor.getString(DATA_CONTENT_COLUMN);
mMode = cursor.getInt(DATA_MODE_COLUMN);
mNote.setTextDataId(cursor.getLong(DATA_ID_COLUMN));
} else if (DataConstants.CALL_NOTE.equals(type)) {
mNote.setCallDataId(cursor.getLong(DATA_ID_COLUMN));
} else {
Log.d(TAG, "Wrong note type with type:" + type);
}
} while (cursor.moveToNext());
}
cursor.close();
} else {
Log.e(TAG, "No data with id:" + mNoteId);
throw new IllegalArgumentException("Unable to find note's data with id " + mNoteId);
}
}
public static WorkingNote createEmptyNote(Context context, long folderId, int widgetId,
int widgetType, int defaultBgColorId) {//创建一个空便签
WorkingNote note = new WorkingNote(context, folderId);
note.setBgColorId(defaultBgColorId);
note.setWidgetId(widgetId);
note.setWidgetType(widgetType);
return note;
}
public static WorkingNote load(Context context, long id) {//加载已经创建的便签
return new WorkingNote(context, id, 0);
}
public synchronized boolean saveNote() {//保存便签，成功保存返回true，否则返回false
if (isWorthSaving()) {
if (!existInDatabase()) {
if ((mNoteId = Note.getNewNoteId(mContext, mFolderId)) == 0) {
Log.e(TAG, "Create new note fail with id:" + mNoteId);
return false;
}
}
mNote.syncNote(mContext, mNoteId);
/**
* Update widget content if there exist any widget of this note
*/
if (mWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID
&& mWidgetType != Notes.TYPE_WIDGET_INVALIDE
&& mNoteSettingStatusListener != null) {
mNoteSettingStatusListener.onWidgetChanged();
}
return true;
} else {
return false;
}
}
public boolean existInDatabase() {//查看该note是否已经存放到数据库中
return mNoteId > 0;
}
private boolean isWorthSaving() {//判断是否需要保存
if (mIsDeleted || (!existInDatabase() && TextUtils.isEmpty(mContent))
|| (existInDatabase() && !mNote.isLocalModified())) {
return false;
} else {
return true;
}
}
public void setOnSettingStatusChangedListener(NoteSettingChangedListener l) {//设置状态改变的监听器
mNoteSettingStatusListener = l;
}
public void setAlertDate(long date, boolean set) {//设置提醒日期
if (date != mAlertDate) {
mAlertDate = date;
mNote.setNoteValue(NoteColumns.ALERTED_DATE, String.valueOf(mAlertDate));
}
if (mNoteSettingStatusListener != null) {
mNoteSettingStatusListener.onClockAlertChanged(date, set);
}
}
public void markDeleted(boolean mark) {//设置删除标志
mIsDeleted = mark;
if (mWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID
&& mWidgetType != Notes.TYPE_WIDGET_INVALIDE && mNoteSettingStatusListener != null) {
mNoteSettingStatusListener.onWidgetChanged();
}
}
public void setBgColorId(int id) {//设定背景颜色
if (id != mBgColorId) {
mBgColorId = id;
if (mNoteSettingStatusListener != null) {
mNoteSettingStatusListener.onBackgroundColorChanged();
}
mNote.setNoteValue(NoteColumns.BG_COLOR_ID, String.valueOf(id));
}
}
public void setCheckListMode(int mode) {//设置检查列表模式
if (mMode != mode) {
if (mNoteSettingStatusListener != null) {
mNoteSettingStatusListener.onCheckListModeChanged(mMode, mode);
}
mMode = mode;
mNote.setTextData(TextNote.MODE, String.valueOf(mMode));
}
}
public void setWidgetType(int type) {//设置窗口类型
if (type != mWidgetType) {
mWidgetType = type;
mNote.setNoteValue(NoteColumns.WIDGET_TYPE, String.valueOf(mWidgetType));
}
}
public void setWidgetId(int id) {//设置窗口编号
if (id != mWidgetId) {
mWidgetId = id;
mNote.setNoteValue(NoteColumns.WIDGET_ID, String.valueOf(mWidgetId));
}
}
public void setWorkingText(String text) {//写入文本内容
if (!TextUtils.equals(mContent, text)) {
mContent = text;
mNote.setTextData(DataColumns.CONTENT, mContent);
}
}
public void convertToCallNote(String phoneNumber, long callDate) {//转换成电话提醒的便签
mNote.setCallData(CallNote.CALL_DATE, String.valueOf(callDate));
mNote.setCallData(CallNote.PHONE_NUMBER, phoneNumber);
mNote.setNoteValue(NoteColumns.PARENT_ID, String.valueOf(Notes.ID_CALL_RECORD_FOLDER));
}
public boolean hasClockAlert() {//检测是否有时钟提醒，mAlertDate > 0返回真，否则返回假
return (mAlertDate > 0 ? true : false);
}
public String getContent() {//获取便签内容
return mContent;
}
public long getAlertDate() {//获取提醒时间
return mAlertDate;
}
public long getModifiedDate() {//获取修改时间
return mModifiedDate;
}
public int getBgColorResId() {//获取背景颜色来源id
return NoteBgResources.getNoteBgResource(mBgColorId);
}
public int getBgColorId() {//获取背景颜色id
return mBgColorId;
}
public int getTitleBgResId() {//获取标题背景颜色资源的id
return NoteBgResources.getNoteTitleBgResource(mBgColorId);
}
public int getCheckListMode() {//获取清单模式
return mMode;
}
public long getNoteId() {//获取便签id
return mNoteId;
}
public long getFolderId() {//获取文件夹id
return mFolderId;
}
public int getWidgetId() {//获取窗口id
return mWidgetId;
}
public int getWidgetType() {//监听检测便签设置变化的接口
return mWidgetType;
}
public interface NoteSettingChangedListener {//监听便签设置是否改变
/**
* Called when the background color of current note has just changed
*/
void onBackgroundColorChanged();//背景颜色改变
/**
* Called when user set clock
*/
void onClockAlertChanged(long date, boolean set);//提醒时间按钮，可进行时间的更改和提醒的开关
/**
* Call when user create note from widget
*/
void onWidgetChanged();//窗口改变
/**
* Call when switch between check list mode and normal mode
* @param oldMode is previous mode before change
* @param newMode is new mode
*/
void onCheckListModeChanged(int oldMode, int newMode);//便签检查列表模式改变
}
}

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许超雨/ui/NotesListAdapter.java
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/*
* 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;//引入tools包
import android.content.Context;//导入各种类
import android.database.Cursor;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CursorAdapter;
import net.micode.notes.data.Notes;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
public class NotesListAdapter extends CursorAdapter {//继承自CursorAdapter，它为cursor和ListView提供了连接的桥梁。因此，该类为cursor和便签编辑提供了沟通渠道
private static final String TAG = "NotesListAdapter";
private Context mContext;
private HashMap<Integer, Boolean> mSelectedIndex;
private int mNotesCount;
private boolean mChoiceMode;
public static class AppWidgetAttribute {//表示桌面widget的属性，包括编号和类型
public int widgetId;
public int widgetType;
};
public NotesListAdapter(Context context) {//初始化便签链接
super(context, null);
mSelectedIndex = new HashMap<Integer, Boolean>();
mContext = context;
mNotesCount = 0;
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {//利用NotesListLtem类创建新布局
return new NotesListItem(context);
}
@Override
public void bindView(View view, Context context, Cursor cursor) {//将光标指向的数据与创建的视图捆绑起来
if (view instanceof NotesListItem) {
NoteItemData itemData = new NoteItemData(context, cursor);
((NotesListItem) view).bind(context, itemData, mChoiceMode,
isSelectedItem(cursor.getPosition()));
}
}
public void setCheckedItem(final int position, final boolean checked) {//设置勾选框
mSelectedIndex.put(position, checked);
notifyDataSetChanged();
}
public boolean isInChoiceMode() {//判断是否被勾选
return mChoiceMode;
}
public void setChoiceMode(boolean mode) {//重置勾选框
mSelectedIndex.clear();
mChoiceMode = mode;
}
public void selectAll(boolean checked) {//设置全部勾选
Cursor cursor = getCursor();
for (int i = 0; i < getCount(); i++) {
if (cursor.moveToPosition(i)) {
if (NoteItemData.getNoteType(cursor) == Notes.TYPE_NOTE) {
setCheckedItem(i, checked);
}
}
}
}
public HashSet<Long> getSelectedItemIds() {// 获取已经被勾选的项目的id号加入到散列表itemSet中
HashSet<Long> itemSet = new HashSet<Long>();
for (Integer position : mSelectedIndex.keySet()) {
if (mSelectedIndex.get(position) == true) {
Long id = getItemId(position);
if (id == Notes.ID_ROOT_FOLDER) {
Log.d(TAG, "Wrong item id, should not happen");
} else {
itemSet.add(id);
}
}
}
return itemSet;
}
public HashSet<AppWidgetAttribute> getSelectedWidget() {//获取桌面组件选项表
HashSet<AppWidgetAttribute> itemSet = new HashSet<AppWidgetAttribute>();
for (Integer position : mSelectedIndex.keySet()) {//遍历被选中的列表
if (mSelectedIndex.get(position) == true) {
Cursor c = (Cursor) getItem(position);
if (c != null) {
AppWidgetAttribute widget = new AppWidgetAttribute();
NoteItemData item = new NoteItemData(mContext, c);
widget.widgetId = item.getWidgetId();
widget.widgetType = item.getWidgetType();
itemSet.add(widget);
/**
* Don't close cursor here, only the adapter could close it
*/
} else {
Log.e(TAG, "Invalid cursor");//设置标签，非法的cursor
return null;
}
}
}
return itemSet;
}
public int getSelectedCount() {//获取选项个数
Collection<Boolean> values = mSelectedIndex.values();//获取选项下标的值
if (null == values) {
return 0;
}
Iterator<Boolean> iter = values.iterator();//初始化叠加器
int count = 0;
while (iter.hasNext()) {
if (true == iter.next()) {
count++;
}
}
return count;
}
public boolean isAllSelected() {//判断是否全选
int checkedCount = getSelectedCount();
return (checkedCount != 0 && checkedCount == mNotesCount);
}
public boolean isSelectedItem(final int position) {//判断是否为选项表
if (null == mSelectedIndex.get(position)) {
return false;
}
return mSelectedIndex.get(position);
}
@Override
protected void onContentChanged() {//在activity发生变化时，重新计算便签数量
super.onContentChanged();
calcNotesCount();
}
@Override
public void changeCursor(Cursor cursor) {//光标变动时重新计算便签数量
super.changeCursor(cursor);
calcNotesCount();
}
private void calcNotesCount() {//计算当前界面便签的数量
mNotesCount = 0;
for (int i = 0; i < getCount(); i++) {//遍历所有数据
Cursor c = (Cursor) getItem(i);
if (c != null) {//判断语句，如果光标不是null，那么便得到信息，便签数目加1
if (NoteItemData.getNoteType(c) == Notes.TYPE_NOTE) {//若选项的数据类型为便签类型，那么计数+1
mNotesCount++;
}
} else {//设置为无效的光标
Log.e(TAG, "Invalid cursor");
return;
}
}
}
}
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