diff --git a/src/ui/NoteEditText.java b/src/ui/NoteEditText.java new file mode 100644 index 0000000..f18e72c --- /dev/null +++ b/src/ui/NoteEditText.java @@ -0,0 +1,214 @@ +/* + * 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; +import android.graphics.Rect; +import android.text.Layout; +import android.text.Selection; +import android.text.Spanned; +import android.text.TextUtils; +import android.text.style.URLSpan; +import android.util.AttributeSet; +import android.util.Log; +import android.view.ContextMenu; +import android.view.KeyEvent; +import android.view.MenuItem; +import android.view.MenuItem.OnMenuItemClickListener; +import android.view.MotionEvent; +import android.widget.EditText; + +import net.micode.notes.R; + +import java.util.HashMap; +import java.util.Map; + +public class NoteEditText extends EditText {//继承EditText，设置便签设置文本框 + private static final String TAG = "NoteEditText";//类的名称，可以用来输出日志文件 + private int mIndex;//建立一个字符和整数的表，存放电话号码、网址、邮箱 + private int mSelectionStartBeforeDelete;//声明整型变量，获取删除文本前的位置 + + private static final String SCHEME_TEL = "tel:" ;//声明字符串常量，标志电话、网址、邮件 + private static final String SCHEME_HTTP = "http:" ;//文本中网页内容 + private static final String SCHEME_EMAIL = "mailto:" ;//文本中邮件内容 + + private static final Map sSchemaActionResMap = new HashMap();//设置映射，将文本内容（电话、网址、邮件）做链接处理 + static { + sSchemaActionResMap.put(SCHEME_TEL, R.string.note_link_tel); + sSchemaActionResMap.put(SCHEME_HTTP, R.string.note_link_web); + sSchemaActionResMap.put(SCHEME_EMAIL, R.string.note_link_email); + }//在NoteEditActivity进行文本的操作，删除，进入，编辑 + + /** + * Call by the {@link NoteEditActivity} to delete or add edit text + */ + public interface OnTextViewChangeListener {//接口OnTextViewChangeListener，会被NoteEditActivity大量调用，其中定义了在编辑文本中delete、点击enter、text改变时的方法 + /** + * Delete current edit text when {@link KeyEvent#KEYCODE_DEL} happens + * and the text is null + */ + void onEditTextDelete(int index, String text);//当delete键按下时删除当前编辑的文字块 + + /** + * Add edit text after current edit text when {@link KeyEvent#KEYCODE_ENTER} + * happen + */ + void onEditTextEnter(int index, String text);//当触发输入文本KeyEvent时增添文本 + + /** + * Hide or show item option when text change + */ + void onTextChange(int index, boolean hasText);//文字更改时隐藏或显示项目选项 + } + + private OnTextViewChangeListener mOnTextViewChangeListener;//新建私有变量：文本改变的监听器 + + public NoteEditText(Context context) {//根据context设置文本 + super(context, null);//用super引用父类变量 + mIndex = 0;//设置当前光标 + } + + public void setIndex(int index) { + mIndex = index; + }//初始化文本修改标记,更新光标指向的索引值 + + public void setOnTextViewChangeListener(OnTextViewChangeListener listener) { + mOnTextViewChangeListener = listener; + }//设置文本视图变化监听器 + + public NoteEditText(Context context, AttributeSet attrs) {//自定义空控件属性，用于维护便签动态变化，这个函数功能为初始化便签 + super(context, attrs, android.R.attr.editTextStyle); + } + +// public NoteEditText(Context context, AttributeSet attrs, int defStyle) { + super(context, attrs, defStyle);\ + // TODO Auto-generated constructor stub + }//自定义控件，用于维护便签动态变化的属性。初始化便签 + + @Override + public boolean onTouchEvent(MotionEvent event) {//view里的函数，处理手机屏幕的所有事件。参数event为手机屏幕触摸事件封装类的对象，其中封装了该事件的所有信息，例如触摸的位置、触摸的类型以及触摸的时间等。该对象会在用户触摸手机屏幕时被创建。 + switch (event.getAction()) {//重写屏幕触发事件 + case MotionEvent.ACTION_DOWN://更新坐标 + + int x = (int) event.getX();//更新x值为当前触摸处的x值 + int y = (int) event.getY();//更新y值为当前触摸处的y值 + x -= getTotalPaddingLeft();//减去左边控件的距离 + y -= getTotalPaddingTop();//减去上方控件的距离 + x += getScrollX(); + y += getScrollY();//加上滚轮滚过的距离 + + Layout layout = getLayout();//用布局控件layout根据x,y的新值设置新的位置 + int line = layout.getLineForVertical(y);//获取纵向行数 + int off = layout.getOffsetForHorizontal(line, x);//获取横向偏移量 + Selection.setSelection(getText(), off);//更新光标位置 + break; + } + + return super.onTouchEvent(event);//调用父类，当屏幕有Touch事件时，此方法就会被调用。 + } + + @Override + public boolean onKeyDown(int keyCode, KeyEvent event) {//处理用户按下一个键盘按键时会触发 的事件 + switch (keyCode) {//根据按键的KeyCode来处理 + case KeyEvent.KEYCODE_ENTER://按下回车时,如果mOnTextViewChangeListener存在则返回false + if (mOnTextViewChangeListener != null) { + return false; + } + break; + case KeyEvent.KEYCODE_DEL://删除按键 + mSelectionStartBeforeDelete = getSelectionStart();//获取删除文本开始位置 + break; + default://其他情况,返回父类的onKeyDown值 + break; + } + return super.onKeyDown(keyCode, event);//继续执行父类的其他点击事件 + } + + @Override + public boolean onKeyUp(int keyCode, KeyEvent event) {//处理用户松开一个键盘按键时会触发的事件 + switch(keyCode) {//根据按键的 Unicode 编码值来处理，有删除和进入2种操作 + case KeyEvent.KEYCODE_DEL://若触发修改且文档不为空，则调用前面代码的onEditTextDelete函数进行文本删除 + if (mOnTextViewChangeListener != null) { + if (0 == mSelectionStartBeforeDelete && mIndex != 0) { + mOnTextViewChangeListener.onEditTextDelete(mIndex, getText().toString()); + return true;//利用上文OnTextViewChangeListener对KEYCODE_DEL按键情况的删除函数进行删除 + } + } else { + Log.d(TAG, "OnTextViewChangeListener was not seted");//其他情况报错，文档的改动监听器并没有建立 + } + break; + case KeyEvent.KEYCODE_ENTER://若文档改动监听器已建立，则获取当前位置和文本，并根据获取的信息调用onEditTextEnter函数进行文本增添 + if (mOnTextViewChangeListener != null) { + int selectionStart = getSelectionStart(); + String text = getText().subSequence(selectionStart, length()).toString();//获取选择区域后面的文本信息 + setText(getText().subSequence(0, selectionStart));//实现文本换行的功能 + mOnTextViewChangeListener.onEditTextEnter(mIndex + 1, text);//将选择区域内的文字移到下一行 + } else { + Log.d(TAG, "OnTextViewChangeListener was not seted");//其他情况报错，监听器OnTextViewChangeListener并没有建立。 + } + break; + default: + break; + } + return super.onKeyUp(keyCode, event);//继续执行父类的其他按键弹起的事件 + } + + @Override + protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {//这个函数规定了编辑文本焦点改变时的系统响应 + if (mOnTextViewChangeListener != null) {//若监听器已建立 + if (!focused && TextUtils.isEmpty(getText())) {//获取到焦点并且文本不为空 + mOnTextViewChangeListener.onTextChange(mIndex, false);//置false隐藏事件选项 + } else { + mOnTextViewChangeListener.onTextChange(mIndex, true);//置true显示事件选项 + } + } + super.onFocusChanged(focused, direction, previouslyFocusedRect);//执行父类的其他焦点变化的事件 + } + + @Override + protected void onCreateContextMenu(ContextMenu menu) {//生成上下文菜单 + if (getText() instanceof Spanned) {//若有文本存在 + int selStart = getSelectionStart(); + int selEnd = getSelectionEnd();////获取文本开始结尾位置 + + int min = Math.min(selStart, selEnd); +// int max = Math.max(selStart, selEnd);//获取开始到结尾的最大、最小值 + final URLSpan[] urls = ((Spanned) getText()).getSpans(min, max, URLSpan.class);//设置url的信息的范围值 + if (urls.length == 1) { + int defaultResId = 0;// 默认的资源ID值为0 + for(String schema: sSchemaActionResMap.keySet()) {//获取计划表中所有的key值 + if(urls[0].getURL().indexOf(schema) >= 0) { + defaultResId = sSchemaActionResMap.get(schema); + break; + }//若url可以添加则在添加后将defaultResId置为key所映射的值 + } + if (defaultResId == 0) { + defaultResId = R.string.note_link_other; + }//defaultResId == 0则说明url并没有添加任何东西，所以置为连接其他SchemaActionResMap的值 + menu.add(0, 0, 0, defaultResId).setOnMenuItemClickListener(//建立菜单 + new OnMenuItemClickListener() {//新建按键监听器 + public boolean onMenuItemClick(MenuItem item) {//如果点击菜单执行操作 + // goto a new intent + urls[0].onClick(NoteEditText.this);//根据相应的文本设置菜单的按键 + return true; + } + }); + } + } + super.onCreateContextMenu(menu);//创建文本菜单 + } +} diff --git a/src/ui/NoteItemData.java b/src/ui/NoteItemData.java new file mode 100644 index 0000000..3473ca0 --- /dev/null +++ b/src/ui/NoteItemData.java @@ -0,0 +1,223 @@ +/* + * 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; +import android.database.Cursor; +import android.text.TextUtils; + +import net.micode.notes.data.Contact; +import net.micode.notes.data.Notes; +import net.micode.notes.data.Notes.NoteColumns; +import net.micode.notes.tool.DataUtils; + + +public class NoteItemData {//便签数据的记录，包括各种常量，参数 + static final String [] PROJECTION = new String [] {//将便签id，提醒时间，背景颜色id，创建时间，关联桌面挂件，修改时间，便签数量，父文件夹id，文件夹id（便签的一段内容），便签的种类，桌面挂件的id，桌面挂件的类型的名称放在一个PROJECTION的字符串数组里 + NoteColumns.ID,//每个便签的序号ID + NoteColumns.ALERTED_DATE,//提醒日期 + NoteColumns.BG_COLOR_ID,//背景颜色的序号id + NoteColumns.CREATED_DATE,//创建日期 + NoteColumns.HAS_ATTACHMENT,//是否含有附件 + NoteColumns.MODIFIED_DATE,//修改日期 + NoteColumns.NOTES_COUNT,//便签数量 + NoteColumns.PARENT_ID, + NoteColumns.SNIPPET,//文件夹名称或者文本注释内容 + NoteColumns.TYPE,//note的种类 + NoteColumns.WIDGET_ID,//挂件id + NoteColumns.WIDGET_TYPE,//挂件的类型 + }; + + private static final int ID_COLUMN = 0; + private static final int ALERTED_DATE_COLUMN = 1; + private static final int BG_COLOR_ID_COLUMN = 2; + private static final int CREATED_DATE_COLUMN = 3; + private static final int HAS_ATTACHMENT_COLUMN = 4; + private static final int MODIFIED_DATE_COLUMN = 5; + private static final int NOTES_COUNT_COLUMN = 6; + private static final int PARENT_ID_COLUMN = 7; + private static final int SNIPPET_COLUMN = 8; + private static final int TYPE_COLUMN = 9; + private static final int WIDGET_ID_COLUMN = 10; + private static final int WIDGET_TYPE_COLUMN = 11; + + private long mId;//PROJECT的字符串名称对应的值 + private long mAlertDate; + private int mBgColorId; + private long mCreatedDate; + private boolean mHasAttachment; + private long mModifiedDate; + private int mNotesCount; + private long mParentId;//对方ID + private String mSnippet; + private int mType; + private int mWidgetId;//宽度 + private int mWidgetType;//宽度形式 + private String mName; + private String mPhoneNumber; + + private boolean mIsLastItem;//判断是否为最后一项 + private boolean mIsFirstItem; + private boolean mIsOnlyOneItem;//判断文件夹下是否只有一个便签 + private boolean mIsOneNoteFollowingFolder; + private boolean mIsMultiNotesFollowingFolder;//判断文件夹下是否有多个便签 + + public NoteItemData(Context context, Cursor cursor) {//初始化NoteItemData,利用光标和context获取的内容 + mId = cursor.getLong(ID_COLUMN);//获取指定数据，并以type类型传回 + mAlertDate = cursor.getLong(ALERTED_DATE_COLUMN); + mBgColorId = cursor.getInt(BG_COLOR_ID_COLUMN); + mCreatedDate = cursor.getLong(CREATED_DATE_COLUMN); + mHasAttachment = (cursor.getInt(HAS_ATTACHMENT_COLUMN) > 0) ? true : false;//判断行列 + mModifiedDate = cursor.getLong(MODIFIED_DATE_COLUMN); + mNotesCount = cursor.getInt(NOTES_COUNT_COLUMN); + mParentId = cursor.getLong(PARENT_ID_COLUMN); + mSnippet = cursor.getString(SNIPPET_COLUMN);//获得字符串 + mSnippet = mSnippet.replace(NoteEditActivity.TAG_CHECKED, "").replace(//把每项前的方框符号和✔符号去掉 + NoteEditActivity.TAG_UNCHECKED, ""); + mType = cursor.getInt(TYPE_COLUMN); + mWidgetId = cursor.getInt(WIDGET_ID_COLUMN); + mWidgetType = cursor.getInt(WIDGET_TYPE_COLUMN); + + mPhoneNumber = "";//初始化电话号码的信息 + if (mParentId == Notes.ID_CALL_RECORD_FOLDER) {//如果父文件的id是call_record_folder + mPhoneNumber = DataUtils.getCallNumberByNoteId(context.getContentResolver(), mId);//使用DataUtils类中定义的函数获取电话号码信息 + if (!TextUtils.isEmpty(mPhoneNumber)) {//若mphonenumber里有符合字符串，则用contart功能连接 + mName = Contact.getContact(context, mPhoneNumber);//通过phonenumber，调用getContact，利用键值对获取对应的name + if (mName == null) { + mName = mPhoneNumber;//若未保存名字，以号码命名 + } + } + } + + if (mName == null) { + mName = ""; + }//若没有对name复制成功，则把name设置为空值 + checkPostion(cursor);//检查光标位置 + } + + private void checkPostion(Cursor cursor) {//根据光标位置设置标记 + mIsLastItem = cursor.isLast() ? true : false;//分别为各种描述状态的变量进行赋值 + mIsFirstItem = cursor.isFirst() ? true : false; + mIsOnlyOneItem = (cursor.getCount() == 1); + mIsMultiNotesFollowingFolder = false; + mIsOneNoteFollowingFolder = false;//初始化“多重子文件”“单一子文件”2个标记 + + if (mType == Notes.TYPE_NOTE && !mIsFirstItem) {//如果对象的类型为便签且不为第一个项 + int position = cursor.getPosition();//获得光标位置 + if (cursor.moveToPrevious()) {//如果光标移动 + if (cursor.getInt(TYPE_COLUMN) == Notes.TYPE_FOLDER//若光标满足SYSTEM或FOLDER格式 + || cursor.getInt(TYPE_COLUMN) == Notes.TYPE_SYSTEM) { + if (cursor.getCount() > (position + 1)) {//若光标位置大于当前位置，置多便签子文件夹标记为真 + mIsMultiNotesFollowingFolder = true;//设置为多重便签 + } else { + mIsOneNoteFollowingFolder = true; + } + } + if (!cursor.moveToNext()) {//若光标不能重新向下走则报错 + throw new IllegalStateException("cursor move to previous but can't move back"); + } + } + } + } + + public boolean isOneFollowingFolder() { + return mIsOneNoteFollowingFolder; + }//判断是否只有一个便签 + + public boolean isMultiFollowingFolder() { + return mIsMultiNotesFollowingFolder; + }//若数据父id为保存至文件夹模式的id且满足电话号码单元不为空，则isCallRecord为true + + public boolean isLast() { + return mIsLastItem; + }//判断是否为最后一个项 + + public String getCallName() { + return mName; + }//获得便签的姓名 + + public boolean isFirst() { + return mIsFirstItem; + }//判断是否是第一个项 + + public boolean isSingle() { + return mIsOnlyOneItem; + }//判断是否只有一个项 + + public long getId() { + return mId; + }//获得对应的ID值 + + public long getAlertDate() { + return mAlertDate; + }//获取设置的提醒时间 + + public long getCreatedDate() { + return mCreatedDate; + }//获取创建时间 + + public boolean hasAttachment() { + return mHasAttachment; + }//判断是否关联桌面挂件 + + public long getModifiedDate() { + return mModifiedDate; + }//获得修改后时间 + + public int getBgColorId() { + return mBgColorId; + }//获取背景颜色 + + public long getParentId() { + return mParentId; + }//获取父进程id + + public int getNotesCount() { + return mNotesCount; + }//获取便签数量 + + public long getFolderId () { + return mParentId; + }//获取文件夹id + + public int getType() { + return mType; + }//获得项的类型 + + public int getWidgetType() { + return mWidgetType; + }//获取挂件类型 + + public int getWidgetId() { + return mWidgetId; + }//获取挂件id + + public String getSnippet(){ + return mSnippet; + }//获取便签的外观片段 + public boolean hasAlert() { + return (mAlertDate > 0); + }//判读此便签是否有提醒功能 + + public boolean isCallRecord() { + return (mParentId == Notes.ID_CALL_RECORD_FOLDER && !TextUtils.isEmpty(mPhoneNumber)); + }//如果父类id保存至文件夹模式并且电话号码单元不为空 + + public static int getNoteType(Cursor cursor) { + return cursor.getInt(TYPE_COLUMN); + }//获取便签类型 +} diff --git a/src/ui/NotesListActivity.java b/src/ui/NotesListActivity.java new file mode 100644 index 0000000..39f7772 --- /dev/null +++ b/src/ui/NotesListActivity.java @@ -0,0 +1,954 @@ +/* + * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package net.micode.notes.ui; + +import android.app.Activity; +import android.app.AlertDialog; +import android.app.Dialog; +import android.appwidget.AppWidgetManager; +import android.content.AsyncQueryHandler; +import android.content.ContentResolver; +import android.content.ContentValues; +import android.content.Context; +import android.content.DialogInterface; +import android.content.Intent; +import android.content.SharedPreferences; +import android.database.Cursor; +import android.os.AsyncTask; +import android.os.Bundle; +import android.preference.PreferenceManager; +import android.text.Editable; +import android.text.TextUtils; +import android.text.TextWatcher; +import android.util.Log; +import android.view.ActionMode; +import android.view.ContextMenu; +import android.view.ContextMenu.ContextMenuInfo; +import android.view.Display; +import android.view.HapticFeedbackConstants; +import android.view.LayoutInflater; +import android.view.Menu; +import android.view.MenuItem; +import android.view.MenuItem.OnMenuItemClickListener; +import android.view.MotionEvent; +import android.view.View; +import android.view.View.OnClickListener; +import android.view.View.OnCreateContextMenuListener; +import android.view.View.OnTouchListener; +import android.view.inputmethod.InputMethodManager; +import android.widget.AdapterView; +import android.widget.AdapterView.OnItemClickListener; +import android.widget.AdapterView.OnItemLongClickListener; +import android.widget.Button; +import android.widget.EditText; +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; +import net.micode.notes.gtask.remote.GTaskSyncService; +import net.micode.notes.model.WorkingNote; +import net.micode.notes.tool.BackupUtils; +import net.micode.notes.tool.DataUtils; +import net.micode.notes.tool.ResourceParser; +import net.micode.notes.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 {//在类的声明中，通过关键字extends来创建一个类的子类。一个类通过关键字implements声明自己使用一个或者多个接口。 + private static final int FOLDER_NOTE_LIST_QUERY_TOKEN = 0;//声明并赋值一些不可更改的私有属性 + + private static final int FOLDER_LIST_QUERY_TOKEN = 1;//查询记号 + + private static final int MENU_FOLDER_DELETE = 0;//删除菜单文件 + + private static final int MENU_FOLDER_VIEW = 1;//菜单中的查看文件夹对应值 + + private static final int MENU_FOLDER_CHANGE_NAME = 2;//修改菜单文件名称功能 + + private static final String PREFERENCE_ADD_INTRODUCTION = "net.micode.notes.introduction";//第一次使用小米便签时的介绍语句 + + private enum ListEditState {//列表编辑状态类 + NOTE_LIST, SUB_FOLDER, CALL_RECORD_FOLDER + }; + + private ListEditState mState; + + private BackgroundQueryHandler mBackgroundQueryHandler;//后台疑问处理功能 + + private NotesListAdapter mNotesListAdapter;//便签列表配适器 + + private ListView mNotesListView;//主界面的视图 + + private Button mAddNewNote;//最下方添加便签的按钮 + + private boolean mDispatch;//是否调度的判断变量 + + private int mOriginY;//首次触摸时屏幕上的垂直距离（y值） + + private int mDispatchY;//重新调度时的触摸的在屏幕上的垂直距离 + + private TextView mTitleBar;//子文件夹下标头 + + private long mCurrentFolderId;//当前文件夹的ID + + private ContentResolver mContentResolver;//提供内容分析 + + private ModeCallback mModeCallBack;//返回调用方法 + + private static final String TAG = "NotesListActivity";//名称（可用于日志文件调试） + + public static final int NOTES_LISTVIEW_SCROLL_RATE = 30;//列表滚动速度 + + private NoteItemData mFocusNoteDataItem;//光标指向的物件的数据内容 + + private static final String NORMAL_SELECTION = NoteColumns.PARENT_ID + "=?";//用于表明处于非父文件夹的其他文件夹下 + + private static final String ROOT_FOLDER_SELECTION = "(" + NoteColumns.TYPE + "<>"//用于表明处于父文件夹下（主列表） + + 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;//打开某个便签时，创建活动的请求码 + private final static int REQUEST_CODE_NEW_NODE = 103;//打开某个便签时，创建活动的请求码 + + @Override//功能为Activity生命周期开始时调用的函数，用来保存读取状态，设置界面 + protected void onCreate(Bundle savedInstanceState) {//创建类 + super.onCreate(savedInstanceState);//引用父类对象 + setContentView(R.layout.note_list);//设置内容的视图 + initResources();//初始化类的资源 + + /** + * Insert an introduction when user firstly use this application + */ + setAppInfoFromRawRes();//当用户第一次访问APP时提供相关信息 + } + + @Override// 代表执行这个方法时，重写并调用了父类的方法 + protected void onActivityResult(int requestCode, int resultCode, Intent data) {//返回一些子模块完成的数据交给主Activity处理 + if (resultCode == RESULT_OK//当被销毁的活动是打开便签或者新建便签且结果码匹配时,把从编辑界面的光标数据删除 + && (requestCode == REQUEST_CODE_OPEN_NODE || requestCode == REQUEST_CODE_NEW_NODE)) { + mNotesListAdapter.changeCursor(null); + } else {//如果条件不满足，则将数据返回给父类，即调用父类的onActivityResult()。 + super.onActivityResult(requestCode, resultCode, data);//调用父类Activity的onActivityResult方法 将数据返回给父类处理 + } + } + + private void setAppInfoFromRawRes() {//利用原始资源文件设置APP的相关信息 + SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);//保存配置参数 + if (!sp.getBoolean(PREFERENCE_ADD_INTRODUCTION, false)) {//判断偏好，增加说明 + StringBuilder sb = new StringBuilder();//读取原生资源信息 + InputStream in = null;//输入流初始设置为空 + try {//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);//加载Welcome to use MIUI notes + if (in != null) {//如果信息不为空 + InputStreamReader isr = new InputStreamReader(in);//使用指定的字符集读取字节并将它们解码为字符 + BufferedReader br = new BufferedReader(isr);//分配缓冲区读取空间 + char [] buf = new char[1024]; + int len = 0; + while ((len = br.read(buf)) > 0) {//不断在buf中读取数据放入sb里 + sb.append(buf, 0, len);//使用append函数在指定元素的结尾插入内容 + } + } else { + Log.e(TAG, "Read introduction file error");//报错，读取文件错误 + return; + } + } catch (IOException e) {//IO出错，打印异常信息 + e.printStackTrace();//在命令行打印异常信息在程序中出错的位置及原因 + return; + } finally {//必然执行部分 + if(in != null) { + try { + in.close(); + } catch (IOException e) { + // TODO Auto-generated catch block + e.printStackTrace();//输出栈轨迹 + } + } + } + + WorkingNote note = WorkingNote.createEmptyNote(this, Notes.ID_ROOT_FOLDER,//创建新便签 + AppWidgetManager.INVALID_APPWIDGET_ID, Notes.TYPE_WIDGET_INVALIDE, + ResourceParser.RED); + note.setWorkingText(sb.toString());//设置文本数据 + if (note.saveNote()) {//若存储条件成立，保存该便签 + sp.edit().putBoolean(PREFERENCE_ADD_INTRODUCTION, true).commit();//更新保存note的信息 + } else { + Log.e(TAG, "Save introduction note error"); + return; + }//若便签保存不成功，则把错误信息打印到日志里 + } + } + + @Override + protected void onStart() {//代表activity生命周期开始 + super.onStart();//调用父类，启动活动 + startAsyncNotesListQuery();//同步列表中的便签信息 + } + + private void initResources() {//初始化资源 + mContentResolver = this.getContentResolver();//获取应用程序的数据 + mBackgroundQueryHandler = new BackgroundQueryHandler(this.getContentResolver());//动态创建后台请求处理器的实例 + mCurrentFolderId = Notes.ID_ROOT_FOLDER;//设置当前文件夹ID是根目录ID + mNotesListView = (ListView) findViewById(R.id.notes_list);//根据R文件中的id值查询到相应的View,然后返回 + mNotesListView.addFooterView(LayoutInflater.from(this).inflate(R.layout.note_list_footer, null), + null, false); + mNotesListView.setOnItemClickListener(new OnListItemClickListener());//设置项目点击监听 + mNotesListView.setOnItemLongClickListener(this);//设置长按监听器 + mNotesListAdapter = new NotesListAdapter(this);//创建便签视图配置器 + mNotesListView.setAdapter(mNotesListAdapter); + mAddNewNote = (Button) findViewById(R.id.btn_new_note);//在activity中要获取该按钮 + mAddNewNote.setOnClickListener(this);//点击监听 + mAddNewNote.setOnTouchListener(new NewNoteOnTouchListener());//屏幕监听 + mDispatch = false;//用于新建便签模块 + mDispatchY = 0;//初始y值设置为0 + mOriginY = 0;//加载文件夹下的标头资源 + mTitleBar = (TextView) findViewById(R.id.tv_title_bar);//加载文件夹下的标头资源 + mState = ListEditState.NOTE_LIST;//设置状态为主界面 + mModeCallBack = new ModeCallback();//对便签的方法调用，包括删除和移动 + } + + private class ModeCallback implements ListView.MultiChoiceModeListener, OnMenuItemClickListener {//implements声明自己使用一个或多个接口 + private DropdownMenu mDropDownMenu;//下拉菜单 + private ActionMode mActionMode;//动作方式 + private MenuItem mMoveMenu;//移动菜单 + + public boolean onCreateActionMode(ActionMode mode, Menu menu) {//根据菜单和动作创建新动作 + getMenuInflater().inflate(R.menu.note_list_options, menu);//配置menu的布局 + menu.findItem(R.id.delete).setOnMenuItemClickListener(this);//为便签删除模块设定监听器 + mMoveMenu = menu.findItem(R.id.move);//获取菜单项目 + if (mFocusNoteDataItem.getParentId() == Notes.ID_CALL_RECORD_FOLDER//若父类id在文件夹中保存或者用户文件数量为零，设置移动菜单为不可见，否者设为可见 + || DataUtils.getUserFolderCount(mContentResolver) == 0) { + mMoveMenu.setVisible(false); + } else { + mMoveMenu.setVisible(true); + mMoveMenu.setOnMenuItemClickListener(this);//长按某一标签时，执行这个移动到文件夹按键变得可见 + } + mActionMode = mode; + mNotesListAdapter.setChoiceMode(true);//进入选择模式 + mNotesListView.setLongClickable(false);//关闭长按列表项发生事件功能 + mAddNewNote.setVisibility(View.GONE);//隐藏了新增便签按钮 + + View customView = LayoutInflater.from(NotesListActivity.this).inflate(//设置用户可视化界面 + R.layout.note_list_dropdown_menu, null);//加载下拉菜单的布局 + mode.setCustomView(customView); + mDropDownMenu = new DropdownMenu(NotesListActivity.this,//创建下拉菜单的实例对象 + (Button) customView.findViewById(R.id.selection_menu), + R.menu.note_list_dropdown);//为view添加dropDownMenu + mDropDownMenu.setOnDropdownMenuItemClickListener(new PopupMenu.OnMenuItemClickListener(){ + public boolean onMenuItemClick(MenuItem item) {//点击菜单时，设置为全选并更新菜单 + mNotesListAdapter.selectAll(!mNotesListAdapter.isAllSelected());//对应下拉菜单里的全选按键 + updateMenu();//更新菜单 + return true; + } + + }); + return true; + } + + private void updateMenu() {//用于用户在进行了勾选之后，更新列表 + int selectedCount = mNotesListAdapter.getSelectedCount();//获取被勾选的条目数量 + // Update dropdown menu + String format = getResources().getString(R.string.menu_select_title, selectedCount);//从原始资源中读取信息更改下拉菜单内容 + mDropDownMenu.setTitle(format);//更改标题 + MenuItem item = mDropDownMenu.findItem(R.id.action_select_all);//全选操作 + if (item != null) {//当全选成功，则将“全选”菜单项改为“取消全选”菜单，否则仍保持“全选”菜单项 + if (mNotesListAdapter.isAllSelected()) {//如果便签列表适配器处于全选状态，设置为已勾选，并提供取消全选操作；否则设置为未勾选，提供全选操作 + item.setChecked(true);//取消全选 + item.setTitle(R.string.menu_deselect_all); + } else { + item.setChecked(false); + item.setTitle(R.string.menu_select_all); + } + } + } + + public boolean onPrepareActionMode(ActionMode mode, Menu menu) {//准备活动模式 + // TODO Auto-generated method stub + return false; + } + + public boolean onActionItemClicked(ActionMode mode, MenuItem item) {//菜单动作触发标记 + // TODO Auto-generated method stub + return false; + } + + public void onDestroyActionMode(ActionMode mode) {//销毁动作模式，设置便签可见 + mNotesListAdapter.setChoiceMode(false);//设置笔记列表适配器选择方式 + mNotesListView.setLongClickable(true);//长按操作 + mAddNewNote.setVisibility(View.VISIBLE);//设置新建的笔记为可见 + } + + public void finishActionMode() { + mActionMode.finish(); + }//动作模式结束,菜单勾选状态改变 + + public void onItemCheckedStateChanged(ActionMode mode, int position, long id,//勾选状态改变时，更改勾选标志，更新菜单 + boolean checked) {//点击菜单选项触发操作 + mNotesListAdapter.setCheckedItem(position, checked);//改变勾选的状态 + updateMenu();//更新菜单 + } + + public boolean onMenuItemClick(MenuItem item) {//判断菜单是否被点击 + if (mNotesListAdapter.getSelectedCount() == 0) {// 当勾选数为零时（即未点击），创建文本并显示 + Toast.makeText(NotesListActivity.this, getString(R.string.menu_select_none), + Toast.LENGTH_SHORT).show(); + return true; + } + + switch (item.getItemId()) {//根据id号判断是删除还是移动 + case R.id.delete://删除菜单项 + AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);//警告对话框 + builder.setTitle(getString(R.string.alert_title_delete));//设置“删除选中的便签”的title + builder.setIcon(android.R.drawable.ic_dialog_alert);//设置提醒删除的图片 + builder.setMessage(getString(R.string.alert_message_delete_notes, + mNotesListAdapter.getSelectedCount()));//设置警告对话框的图标 + builder.setPositiveButton(android.R.string.ok,//设置否定按钮 + new DialogInterface.OnClickListener() { + public void onClick(DialogInterface dialog, + int which) { + batchDelete();//执行批量删除操作 + } + }); + builder.setNegativeButton(android.R.string.cancel, null);//取消按键的视图 + builder.show(); + break; + case R.id.move://移动便签到文件夹 + startQueryDestinationFolders();//开始查询目标文件 + break; + default: + return false; + } + return true; + } + } + + private class NewNoteOnTouchListener implements OnTouchListener {//触摸便签监听器 + + public boolean onTouch(View v, MotionEvent event) {//触摸处理函数 + switch (event.getAction()) {//事件调用获取行为函数，根据不同动作，对应不同操作 + case MotionEvent.ACTION_DOWN: {//若是创建新便签，通过计算调整界面大小 + Display display = getWindowManager().getDefaultDisplay(); + int screenHeight = display.getHeight();//获取屏幕高度 + int newNoteViewHeight = mAddNewNote.getHeight();//获取新增便签的高度 + int start = screenHeight - newNoteViewHeight; + int eventY = start + (int) event.getY(); + /** + * Minus TitleBar's height + */ + if (mState == ListEditState.SUB_FOLDER) { + eventY -= mTitleBar.getHeight(); + start -= mTitleBar.getHeight(); + } + /** + * HACKME:When click the transparent part of "New Note" button, dispatch + * the event to the list view behind this button. The transparent part of + * "New Note" button could be expressed by formula y=-0.12x+94（Unit:pixel） + * and the line top of the button. The coordinate based on left of the "New + * Note" button. The 94 represents maximum height of the transparent part. + * Notice that, if the background of the button changes, the formula should + * also change. This is very bad, just for the UI designer's strong requirement. + */ + if (event.getY() < (event.getX() * (-0.12) + 94)) { + View view = mNotesListView.getChildAt(mNotesListView.getChildCount() - 1 + - mNotesListView.getFooterViewsCount()); + if (view != null && view.getBottom() > start + && (view.getTop() < (start + 94))) { + mOriginY = (int) event.getY(); + mDispatchY = eventY; + event.setLocation(event.getX(), mDispatchY); + mDispatch = true; + return mNotesListView.dispatchTouchEvent(event); + } + } + break; + } + case MotionEvent.ACTION_MOVE: { + if (mDispatch) { + mDispatchY += (int) event.getY() - mOriginY; + event.setLocation(event.getX(), mDispatchY); + return mNotesListView.dispatchTouchEvent(event); + } + break; + } + default: { + if (mDispatch) { + event.setLocation(event.getX(), mDispatchY); + mDispatch = false; + return mNotesListView.dispatchTouchEvent(event); + } + break; + } + } + return false; + } + + }; + + private void startAsyncNotesListQuery() { + String selection = (mCurrentFolderId == Notes.ID_ROOT_FOLDER) ? ROOT_FOLDER_SELECTION + : NORMAL_SELECTION; + mBackgroundQueryHandler.startQuery(FOLDER_NOTE_LIST_QUERY_TOKEN, null, + Notes.CONTENT_NOTE_URI, NoteItemData.PROJECTION, selection, new String[] { + String.valueOf(mCurrentFolderId) + }, NoteColumns.TYPE + " DESC," + NoteColumns.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) { + case FOLDER_NOTE_LIST_QUERY_TOKEN: + mNotesListAdapter.changeCursor(cursor); + break; + case FOLDER_LIST_QUERY_TOKEN: + if (cursor != null && cursor.getCount() > 0) { + showFolderListMenu(cursor); + } else { + Log.e(TAG, "Query folder failed"); + } + break; + default: + return; + } + } + } + + 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)); + Toast.makeText( + NotesListActivity.this, + getString(R.string.format_move_notes_to_folder, + mNotesListAdapter.getSelectedCount(), + adapter.getFolderName(NotesListActivity.this, which)), + Toast.LENGTH_SHORT).show(); + mModeCallBack.finishActionMode(); + } + }); + builder.show(); + } + + private void createNewNote() { + Intent intent = new Intent(this, NoteEditActivity.class); + intent.setAction(Intent.ACTION_INSERT_OR_EDIT); + intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, mCurrentFolderId); + this.startActivityForResult(intent, REQUEST_CODE_NEW_NODE); + } + + private void batchDelete() { + new AsyncTask>() { + protected HashSet doInBackground(Void... unused) { + HashSet widgets = mNotesListAdapter.getSelectedWidget(); + if (!isSyncMode()) { + // if not synced, delete notes directly + if (DataUtils.batchDeleteNotes(mContentResolver, mNotesListAdapter + .getSelectedItemIds())) { + } else { + Log.e(TAG, "Delete notes error, should not happens"); + } + } else { + // in sync mode, we'll move the deleted note into the trash + // folder + if (!DataUtils.batchMoveToFolder(mContentResolver, mNotesListAdapter + .getSelectedItemIds(), Notes.ID_TRASH_FOLER)) { + Log.e(TAG, "Move notes to trash folder error, should not happens"); + } + } + return widgets; + } + + @Override + protected void onPostExecute(HashSet widgets) { + if (widgets != null) { + for (AppWidgetAttribute widget : widgets) { + if (widget.widgetId != AppWidgetManager.INVALID_APPWIDGET_ID + && widget.widgetType != Notes.TYPE_WIDGET_INVALIDE) { + updateWidget(widget.widgetId, widget.widgetType); + } + } + } + mModeCallBack.finishActionMode(); + } + }.execute(); + } + + private void deleteFolder(long folderId) { + if (folderId == Notes.ID_ROOT_FOLDER) { + Log.e(TAG, "Wrong folder id, should not happen " + folderId); + return; + } + + HashSet ids = new HashSet(); + ids.add(folderId); + HashSet widgets = DataUtils.getFolderNoteWidget(mContentResolver, + folderId); + if (!isSyncMode()) { + // if not synced, delete folder directly + DataUtils.batchDeleteNotes(mContentResolver, ids); + } else { + // in sync mode, we'll move the deleted folder into the trash folder + DataUtils.batchMoveToFolder(mContentResolver, ids, Notes.ID_TRASH_FOLER); + } + if (widgets != null) { + for (AppWidgetAttribute widget : widgets) { + if (widget.widgetId != AppWidgetManager.INVALID_APPWIDGET_ID + && widget.widgetType != Notes.TYPE_WIDGET_INVALIDE) { + updateWidget(widget.widgetId, widget.widgetType); + } + } + } + } + + 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); + } else { + mState = ListEditState.SUB_FOLDER; + } + if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) { + mTitleBar.setText(R.string.call_record_folder_name); + } else { + mTitleBar.setText(data.getSnippet()); + } + mTitleBar.setVisibility(View.VISIBLE); + } + + public void onClick(View v) { + switch (v.getId()) { + case R.id.btn_new_note: + createNewNote(); + break; + default: + 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); + final EditText etName = (EditText) view.findViewById(R.id.et_foler_name); + showSoftInput(); + if (!create) { + if (mFocusNoteDataItem != null) { + etName.setText(mFocusNoteDataItem.getSnippet()); + builder.setTitle(getString(R.string.menu_folder_change_name)); + } else { + Log.e(TAG, "The long click data item is null"); + return; + } + } else { + etName.setText(""); + builder.setTitle(this.getString(R.string.menu_create_folder)); + } + + builder.setPositiveButton(android.R.string.ok, null); + builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() { + public void onClick(DialogInterface dialog, int which) { + hideSoftInput(etName); + } + }); + + final Dialog dialog = builder.setView(view).show(); + final Button positive = (Button)dialog.findViewById(android.R.id.button1); + positive.setOnClickListener(new OnClickListener() { + public void onClick(View v) { + hideSoftInput(etName); + String name = etName.getText().toString(); + if (DataUtils.checkVisibleFolderName(mContentResolver, name)) { + Toast.makeText(NotesListActivity.this, getString(R.string.folder_exist, name), + Toast.LENGTH_LONG).show(); + etName.setSelection(0, etName.length()); + return; + } + if (!create) { + if (!TextUtils.isEmpty(name)) { + ContentValues values = new ContentValues(); + values.put(NoteColumns.SNIPPET, name); + values.put(NoteColumns.TYPE, Notes.TYPE_FOLDER); + values.put(NoteColumns.LOCAL_MODIFIED, 1); + mContentResolver.update(Notes.CONTENT_NOTE_URI, values, NoteColumns.ID + + "=?", new String[] { + String.valueOf(mFocusNoteDataItem.getId()) + }); + } + } else if (!TextUtils.isEmpty(name)) { + ContentValues values = new ContentValues(); + values.put(NoteColumns.SNIPPET, name); + values.put(NoteColumns.TYPE, Notes.TYPE_FOLDER); + mContentResolver.insert(Notes.CONTENT_NOTE_URI, values); + } + dialog.dismiss(); + } + }); + + if (TextUtils.isEmpty(etName.getText())) { + positive.setEnabled(false); + } + /** + * When the name edit text is null, disable the positive button + */ + etName.addTextChangedListener(new TextWatcher() { + public void beforeTextChanged(CharSequence s, int start, int count, int after) { + // TODO Auto-generated method stub + + } + + public void onTextChanged(CharSequence s, int start, int before, int count) { + if (TextUtils.isEmpty(etName.getText())) { + positive.setEnabled(false); + } else { + positive.setEnabled(true); + } + } + + public void afterTextChanged(Editable s) { + // TODO Auto-generated method stub + + } + }); + } + + @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; + } + } + + private void updateWidget(int appWidgetId, int appWidgetType) { + Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); + if (appWidgetType == Notes.TYPE_WIDGET_2X) { + intent.setClass(this, NoteWidgetProvider_2x.class); + } else if (appWidgetType == Notes.TYPE_WIDGET_4X) { + intent.setClass(this, NoteWidgetProvider_4x.class); + } else { + Log.e(TAG, "Unspported widget type"); + return; + } + + intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] { + appWidgetId + }); + + sendBroadcast(intent); + setResult(RESULT_OK, intent); + } + + private final OnCreateContextMenuListener mFolderOnCreateContextMenuListener = new OnCreateContextMenuListener() { + public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { + if (mFocusNoteDataItem != null) { + menu.setHeaderTitle(mFocusNoteDataItem.getSnippet()); + menu.add(0, MENU_FOLDER_VIEW, 0, R.string.menu_folder_view); + menu.add(0, MENU_FOLDER_DELETE, 0, R.string.menu_folder_delete); + menu.add(0, MENU_FOLDER_CHANGE_NAME, 0, R.string.menu_folder_change_name); + } + } + }; + + @Override + public void onContextMenuClosed(Menu menu) { + if (mNotesListView != null) { + mNotesListView.setOnCreateContextMenuListener(null); + } + super.onContextMenuClosed(menu); + } + + @Override + public boolean onContextItemSelected(MenuItem item) { + if (mFocusNoteDataItem == null) { + Log.e(TAG, "The long click data item is null"); + return false; + } + switch (item.getItemId()) { + case MENU_FOLDER_VIEW: + openFolder(mFocusNoteDataItem); + break; + case MENU_FOLDER_DELETE: + AlertDialog.Builder builder = new AlertDialog.Builder(this); + builder.setTitle(getString(R.string.alert_title_delete)); + builder.setIcon(android.R.drawable.ic_dialog_alert); + builder.setMessage(getString(R.string.alert_message_delete_folder)); + builder.setPositiveButton(android.R.string.ok, + new DialogInterface.OnClickListener() { + public void onClick(DialogInterface dialog, int which) { + deleteFolder(mFocusNoteDataItem.getId()); + } + }); + builder.setNegativeButton(android.R.string.cancel, null); + builder.show(); + break; + case MENU_FOLDER_CHANGE_NAME: + showCreateOrModifyFolderDialog(false); + break; + default: + break; + } + + return true; + } + + @Override + public boolean onPrepareOptionsMenu(Menu menu) { + menu.clear(); + if (mState == ListEditState.NOTE_LIST) { + getMenuInflater().inflate(R.menu.note_list, menu); + // set sync or sync_cancel + menu.findItem(R.id.menu_sync).setTitle( + GTaskSyncService.isSyncing() ? R.string.menu_sync_cancel : R.string.menu_sync); + } else if (mState == ListEditState.SUB_FOLDER) { + getMenuInflater().inflate(R.menu.sub_folder, menu); + } else if (mState == ListEditState.CALL_RECORD_FOLDER) { + getMenuInflater().inflate(R.menu.call_record_folder, menu); + } else { + Log.e(TAG, "Wrong state:" + mState); + } + return true; + } + + @Override + public boolean onOptionsItemSelected(MenuItem item) { + switch (item.getItemId()) { + case R.id.menu_new_folder: { + showCreateOrModifyFolderDialog(true); + break; + } + case R.id.menu_export_text: { + exportNoteToText(); + break; + } + case R.id.menu_sync: { + if (isSyncMode()) { + if (TextUtils.equals(item.getTitle(), getString(R.string.menu_sync))) { + GTaskSyncService.startSync(this); + } else { + GTaskSyncService.cancelSync(this); + } + } else { + startPreferenceActivity(); + } + break; + } + case R.id.menu_setting: { + startPreferenceActivity(); + break; + } + case R.id.menu_new_note: { + createNewNote(); + break; + } + case R.id.menu_search: + onSearchRequested(); + break; + default: + break; + } + return true; + } + + @Override + public boolean onSearchRequested() { + startSearch(null, false, null /* appData */, false); + return true; + } + + private void exportNoteToText() { + final BackupUtils backup = BackupUtils.getInstance(NotesListActivity.this); + new AsyncTask() { + + @Override + protected Integer doInBackground(Void... unused) { + return backup.exportToText(); + } + + @Override + protected void onPostExecute(Integer result) { + if (result == BackupUtils.STATE_SD_CARD_UNMOUONTED) { + AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this); + builder.setTitle(NotesListActivity.this + .getString(R.string.failed_sdcard_export)); + builder.setMessage(NotesListActivity.this + .getString(R.string.error_sdcard_unmounted)); + builder.setPositiveButton(android.R.string.ok, null); + builder.show(); + } else if (result == BackupUtils.STATE_SUCCESS) { + AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this); + builder.setTitle(NotesListActivity.this + .getString(R.string.success_sdcard_export)); + builder.setMessage(NotesListActivity.this.getString( + R.string.format_exported_file_location, backup + .getExportedTextFileName(), backup.getExportedTextFileDir())); + builder.setPositiveButton(android.R.string.ok, null); + builder.show(); + } else if (result == BackupUtils.STATE_SYSTEM_ERROR) { + AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this); + builder.setTitle(NotesListActivity.this + .getString(R.string.failed_sdcard_export)); + builder.setMessage(NotesListActivity.this + .getString(R.string.error_sdcard_export)); + builder.setPositiveButton(android.R.string.ok, null); + builder.show(); + } + } + + }.execute(); + } + + private boolean isSyncMode() { + return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0; + } + + private void startPreferenceActivity() { + Activity from = getParent() != null ? getParent() : this; + Intent intent = new Intent(from, NotesPreferenceActivity.class); + from.startActivityIfNeeded(intent, -1); + } + + private class OnListItemClickListener implements OnItemClickListener { + + public void onItemClick(AdapterView parent, View view, int position, long id) { + if (view instanceof NotesListItem) { + NoteItemData item = ((NotesListItem) view).getItemData(); + if (mNotesListAdapter.isInChoiceMode()) { + if (item.getType() == Notes.TYPE_NOTE) { + position = position - mNotesListView.getHeaderViewsCount(); + mModeCallBack.onItemCheckedStateChanged(null, position, id, + !mNotesListAdapter.isSelectedItem(position)); + } + return; + } + + switch (mState) { + case NOTE_LIST: + if (item.getType() == Notes.TYPE_FOLDER + || item.getType() == Notes.TYPE_SYSTEM) { + openFolder(item); + } else if (item.getType() == Notes.TYPE_NOTE) { + openNode(item); + } else { + Log.e(TAG, "Wrong note type in NOTE_LIST"); + } + break; + case SUB_FOLDER: + case CALL_RECORD_FOLDER: + if (item.getType() == Notes.TYPE_NOTE) { + openNode(item); + } else { + Log.e(TAG, "Wrong note type in SUB_FOLDER"); + } + break; + default: + break; + } + } + } + + } + + private void startQueryDestinationFolders() { + String selection = NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>? AND " + NoteColumns.ID + "<>?"; + selection = (mState == ListEditState.NOTE_LIST) ? selection: + "(" + selection + ") OR (" + NoteColumns.ID + "=" + Notes.ID_ROOT_FOLDER + ")"; + + mBackgroundQueryHandler.startQuery(FOLDER_LIST_QUERY_TOKEN, + null, + Notes.CONTENT_NOTE_URI, + FoldersListAdapter.PROJECTION, + selection, + new String[] { + String.valueOf(Notes.TYPE_FOLDER), + String.valueOf(Notes.ID_TRASH_FOLER), + String.valueOf(mCurrentFolderId) + }, + NoteColumns.MODIFIED_DATE + " DESC"); + } + + public boolean onItemLongClick(AdapterView parent, View view, int position, long id) { + if (view instanceof NotesListItem) { + mFocusNoteDataItem = ((NotesListItem) view).getItemData(); + if (mFocusNoteDataItem.getType() == Notes.TYPE_NOTE && !mNotesListAdapter.isInChoiceMode()) { + if (mNotesListView.startActionMode(mModeCallBack) != null) { + mModeCallBack.onItemCheckedStateChanged(null, position, id, true); + mNotesListView.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); + } else { + Log.e(TAG, "startActionMode fails"); + } + } else if (mFocusNoteDataItem.getType() == Notes.TYPE_FOLDER) { + mNotesListView.setOnCreateContextMenuListener(mFolderOnCreateContextMenuListener); + } + } + return false; + } +} diff --git a/src/ui/NotesListItem.java b/src/ui/NotesListItem.java new file mode 100644 index 0000000..3231942 --- /dev/null +++ b/src/ui/NotesListItem.java @@ -0,0 +1,122 @@ +/* + * 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; +import android.text.format.DateUtils; +import android.view.View; +import android.widget.CheckBox; +import android.widget.ImageView; +import android.widget.LinearLayout; +import android.widget.TextView; + +import net.micode.notes.R; +import net.micode.notes.data.Notes; +import net.micode.notes.tool.DataUtils; +import net.micode.notes.tool.ResourceParser.NoteItemBgResources; + + +public class NotesListItem extends LinearLayout {//构建便签列表的各个项目的详细具体信息 + private ImageView mAlert;//闹钟图片 + private TextView mTitle;//文本标题 + private TextView mTime;//时间 + private TextView mCallName;//名称 + private NoteItemData mItemData;//标签数据 + private CheckBox mCheckBox;//勾选框 + + public NotesListItem(Context context) {//初始化基本信息 + super(context);//调整调用父类构造函数的顺序 + inflate(context, R.layout.note_item, this);//将xml定义的一个布局找出来 + mAlert = (ImageView) findViewById(R.id.iv_alert_icon);//从contentView中查找指定ID的View + mTitle = (TextView) findViewById(R.id.tv_title);//获取题目 + mTime = (TextView) findViewById(R.id.tv_time);//获取创建或修改时间 + mCallName = (TextView) findViewById(R.id.tv_name);//获取联系人姓名 + mCheckBox = (CheckBox) findViewById(android.R.id.checkbox);//获取复选框 + } + + public void bind(Context context, NoteItemData data, boolean choiceMode, boolean checked) {//根据data的属性对各个控件的属性的控制 + if (choiceMode && data.getType() == Notes.TYPE_NOTE) {//如果当前处于选择模式下且数据类型为便签 + mCheckBox.setVisibility(View.VISIBLE);//设置View可见 + mCheckBox.setChecked(checked);//设置勾选 + } else { + mCheckBox.setVisibility(View.GONE);//设置复选框不可见 + } + + mItemData = data;//把数据传给标签 + if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {//设置控件属性，通过判断保存到文件夹的ID、当前ID以及父ID之间关系决定 + mCallName.setVisibility(View.GONE);//设置联系人名字不可见 + mAlert.setVisibility(View.VISIBLE);//设置闹钟图标可见 + mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);//设置外观风格 + mTitle.setText(context.getString(R.string.call_record_folder_name)//设置标题内容为文件夹名字、文件数和便签数 + + context.getString(R.string.format_folder_files_count, data.getNotesCount())); + mAlert.setImageResource(R.drawable.call_record);//设置图片来源 + } else if (data.getParentId() == Notes.ID_CALL_RECORD_FOLDER) {//关于闹钟的设置 + mCallName.setVisibility(View.VISIBLE);//设置联系人姓名可见 + mCallName.setText(data.getCallName());//设置联系人姓名的文本内容 + mTitle.setTextAppearance(context,R.style.TextAppearanceSecondaryItem);//设置title文本风格 + mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet()));//设置title的文本内容为便签内容的前面片段 + if (data.hasAlert()) {//如果时间提醒存在，设置图片来源，将时间提醒图标定为可见 + mAlert.setImageResource(R.drawable.clock);//图片来源的设置 + mAlert.setVisibility(View.VISIBLE);//将提醒图标设置为可见 + } else {//否则将提醒图标设置为不可见 + mAlert.setVisibility(View.GONE); + } + } else {//如果父类和当前id均与保存在文件夹中的id不同 + mCallName.setVisibility(View.GONE);//设置联系人姓名不可见 + mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);//设置title的文本格式 + + if (data.getType() == Notes.TYPE_FOLDER) {//设置Type格式 + mTitle.setText(data.getSnippet()//设置便签标题内容为便签的前面部分的内容+文件数+便签数 + + context.getString(R.string.format_folder_files_count, + data.getNotesCount()));//设置内容，从data编辑的日期中获取时间 + mAlert.setVisibility(View.GONE);//设置时间提醒图标为不可见 + } else {//如果不是文件夹类型,设置便签的title为便签内容的前面片段 + mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet())); + if (data.hasAlert()) {//若当前便签存在提醒闹钟时间，则显示相应的图片 + mAlert.setImageResource(R.drawable.clock);//将提醒图标设置为闹钟样式 + mAlert.setVisibility(View.VISIBLE);//设置提醒闹钟可见 + } else {//否则设置提醒图标不可见 + mAlert.setVisibility(View.GONE); + } + } + } + mTime.setText(DateUtils.getRelativeTimeSpanString(data.getModifiedDate()));//将时间设置为编辑便签的时间 + + setBackground(data);//从data里编辑的日期中获取内容和相关时间 + } + + private void setBackground(NoteItemData data) {//根据data的文件属性来设置背景 + int id = data.getBgColorId();//获取id，用此id用来获取背景颜色 + if (data.getType() == Notes.TYPE_NOTE) {//根据data的属性来是否为Note属性，分为4种情况 + if (data.isSingle() || data.isOneFollowingFolder()) {//单个数据或只有一个子文件夹 + setBackgroundResource(NoteItemBgResources.getNoteBgSingleRes(id));//设置背景来源为id的单个数据 + } else if (data.isLast()) {//若当前便签为最后一个,设置背景来源为id的最后一个数据 + setBackgroundResource(NoteItemBgResources.getNoteBgLastRes(id)); + } else if (data.isFirst() || data.isMultiFollowingFolder()) {//若是第一个数据或者有很多个子文件夹, 设置背景来源为id的第一个数据 + setBackgroundResource(NoteItemBgResources.getNoteBgFirstRes(id)); + } else { + setBackgroundResource(NoteItemBgResources.getNoteBgNormalRes(id));//将便签设置为普通类型便签的背景 + } + } else {//则将背景设置为文件夹的背景 + setBackgroundResource(NoteItemBgResources.getFolderBgRes()); + } + } + + public NoteItemData getItemData() { + return mItemData; + }//返回当前便签的数据信息 +} diff --git a/src/ui/NotesPreferenceActivity.java b/src/ui/NotesPreferenceActivity.java new file mode 100644 index 0000000..b87168e --- /dev/null +++ b/src/ui/NotesPreferenceActivity.java @@ -0,0 +1,389 @@ +/* + * 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; +import android.accounts.AccountManager; +import android.app.ActionBar; +import android.app.AlertDialog; +import android.content.BroadcastReceiver; +import android.content.ContentValues; +import android.content.Context; +import android.content.DialogInterface; +import android.content.Intent; +import android.content.IntentFilter; +import android.content.SharedPreferences; +import android.os.Bundle; +import android.preference.Preference; +import android.preference.Preference.OnPreferenceClickListener; +import android.preference.PreferenceActivity; +import android.preference.PreferenceCategory; +import android.text.TextUtils; +import android.text.format.DateFormat; +import android.view.LayoutInflater; +import android.view.Menu; +import android.view.MenuItem; +import android.view.View; +import android.widget.Button; +import android.widget.TextView; +import android.widget.Toast; + +import net.micode.notes.R; +import net.micode.notes.data.Notes; +import net.micode.notes.data.Notes.NoteColumns; +import net.micode.notes.gtask.remote.GTaskSyncService; + + +public class NotesPreferenceActivity extends PreferenceActivity {//实现对背景颜色和字体大小的数据储存 + 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";//背景颜色设置按键 + + private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";//账户同步密码 + + 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 + protected void onCreate(Bundle icicle) {//创建一个activity，在函数里完成所有的正常静态设置 + super.onCreate(icicle);//执行父类创建函数 + + /* 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);//从资源里添加布局文件 + mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);//根据同步账户密码进行账户分组 + mReceiver = new GTaskReceiver();//设置同步任务接收器 + IntentFilter filter = new IntentFilter();//设置过滤项 + filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME);// + registerReceiver(mReceiver, filter); + + mOriAccounts = null;//初始化同步组件 + View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);//从xml获取Listview + getListView().addHeaderView(header, null, true);//列出所有选择 + } + + @Override//功能描述：重启活动 + protected void onResume() { + super.onResume();//activity交互功能的实现，用于接受用户的输入 + + // 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) {//遍历账户 + boolean found = false;//更新账户 + for (Account accountOld : mOriAccounts) {//循环判断当前账户列表中的账户是否与新建账户名相同 + if (TextUtils.equals(accountOld.name, accountNew.name)) { + found = true; + break; + }//若没找到旧账户则只设置新账户为同步账户 + } + if (!found) {//如果当前新建账户不存在 + setSyncAccount(accountNew.name);//保存该账户 + break; + } + } + } + } + + refreshUI();//刷新标签界面 + } + + @Override//功能描述：销毁活动 + protected void onDestroy() {//销毁Activity + if (mReceiver != null) { + unregisterReceiver(mReceiver);//取消广播器的监听 + }//销毁接收器 + super.onDestroy();//执行销毁动作 + } + + private void loadAccountPreference() {//重新设置账户信息 + mAccountCategory.removeAll();//销毁所有的分组 + + Preference accountPref = new Preference(this);//建立首选项 + final String defaultAccount = getSyncAccountName(this);//默认账户为当前账户 + accountPref.setTitle(getString(R.string.preferences_account_title)); + accountPref.setSummary(getString(R.string.preferences_account_summary)); + accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {//设置首选项的大标题和小标题 + public boolean onPreferenceClick(Preference preference) {//建立监听器 + if (!GTaskSyncService.isSyncing()) {//不在同步状态下，如果没有默认的账户，显示选择账户的对话框，否则显示需要改变账户的对话框 + if (TextUtils.isEmpty(defaultAccount)) {//第一次设置账户 + // the first time to set account + showSelectAccountAlertDialog();//第一次建立账户，显示选择账户提示对话框 + } else { + // if the account has already been set, we need to promp + // user about the risk + showChangeAccountConfirmAlertDialog();//展示改变账户确认提醒对话框 + } + } 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) + .show();//正在同步，不能切换同步的账号 + } + return true; + } + }); + + mAccountCategory.addPreference(accountPref);//根据新建首选项编辑新的账户分组 + } + + private void loadSyncButton() {//设置同步按键和最近同步时间 + Button syncButton = (Button) findViewById(R.id.preference_sync_button);//配置资源，设置一个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 + if (GTaskSyncService.isSyncing()) {//如果在同步状态下，则按钮设置为“取消同步” + syncButton.setText(getString(R.string.preferences_button_sync_cancel)); + syncButton.setOnClickListener(new View.OnClickListener() {//设置点击监听器 + public void onClick(View v) {//设置取消同步的响应方法 + GTaskSyncService.cancelSync(NotesPreferenceActivity.this); + } + }); + } else {//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.setText(getString(R.string.preferences_button_sync_immediately)); + syncButton.setOnClickListener(new View.OnClickListener() { + public void onClick(View v) {//点击行为 + GTaskSyncService.startSync(NotesPreferenceActivity.this);//开始同步 + } + }); + } + syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));//如果没有账户，则不可选“立即同步”的按键 + + // set last sync time设置上次同步时间 + if (GTaskSyncService.isSyncing()) {//如果正在同步则读取正在同步的进度，否则显示最后同步的时间 + lastSyncTimeView.setText(GTaskSyncService.getProgressString()); + lastSyncTimeView.setVisibility(View.VISIBLE); + } else {//若是非同步情况 + long lastSyncTime = getLastSyncTime(this); + if (lastSyncTime != 0) {//若最近同步时间不为0则显示最近同步时间 + lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time, + DateFormat.format(getString(R.string.preferences_last_sync_time_format), + lastSyncTime))); + lastSyncTimeView.setVisibility(View.VISIBLE); + } else {//若时间为空直接设置为不可见状态 + lastSyncTimeView.setVisibility(View.GONE); + } + } + }//根据当前同步服务器设置时间显示框的文本以及可见性 + + private void refreshUI() {//刷新标签界面 + loadAccountPreference(); + loadSyncButton();//加载“保存”按钮 + } + + private void showSelectAccountAlertDialog() {//显示账户选择的对话框并进行账户的设置 + 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);//文本视图设置 + subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips)); + + dialogBuilder.setCustomTitle(titleView);//设置标题以及子标题的内容 + dialogBuilder.setPositiveButton(null, null);//不设置“确定”的按钮 + + Account[] accounts = getGoogleAccounts();//获取当前谷歌账户 + String defAccount = getSyncAccountName(this);//获得同步账户 + + mOriAccounts = accounts; + mHasAddedAccount = false;//获取同步账户信息 + + if (accounts.length > 0) {//如果有谷歌账户，则显示所有账户的名称，并设置为选项 + CharSequence[] items = new CharSequence[accounts.length]; + final CharSequence[] itemMapping = items; + int checkedItem = -1; + int index = 0; + for (Account account : accounts) {//通过循环检查账户列表 + 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) {//响应对话框的点击 + setSyncAccount(itemMapping[which].toString());//点击则开始设置同步账户 + dialog.dismiss();//取消对话框 + refreshUI();//刷新界面 + } + }); + }//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 + + View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null);//添加新的账户 + 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() {//设置监听器 + public void onClick(View v) {//响应点击添加账户的请求 + mHasAddedAccount = true;//将新加账户的hash置为true + Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");//建立网络组件 + intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] { + "gmail-ls" + }); + startActivityForResult(intent, -1);//跳回上一个选项 + dialog.dismiss(); + } + }); + } + + private void showChangeAccountConfirmAlertDialog() {//刷新标签界面 + 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)); + dialogBuilder.setCustomTitle(titleView);//根据同步修改的账户信息设置标题以及子标题的内容 + + CharSequence[] menuItemArray = new CharSequence[] { + getString(R.string.preferences_menu_change_account), + getString(R.string.preferences_menu_remove_account), + getString(R.string.preferences_menu_cancel) + };//设置对话框的自定义标题 + dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() {//定义一些标记字符串 + public void onClick(DialogInterface dialog, int which) {//响应对话框的点击 + if (which == 0) {//如果是改变同步账户，则显示可选择的账户 + showSelectAccountAlertDialog(); + } else if (which == 1) { + removeSyncAccount(); + refreshUI(); + }//删除同步账户 + } + }); + dialogBuilder.show();//显示对话框 + } + + private Account[] getGoogleAccounts() {//获取谷歌账户 + AccountManager accountManager = AccountManager.get(this); + return accountManager.getAccountsByType("com.google"); + } + + private void setSyncAccount(String account) {//设置同步账户 + if (!getSyncAccountName(this).equals(account)) {//如果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();//编辑共享首选项 + if (account != null) {//如果账户不为空 + 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() {//新线程的创建 + public void run() { + ContentValues values = new ContentValues(); + values.put(NoteColumns.GTASK_ID, ""); + values.put(NoteColumns.SYNC_ID, 0); + getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null); + }//清除本地的gtask关联的信息 + }).start();//重置当地同步任务的信息 + + Toast.makeText(NotesPreferenceActivity.this,//设置一个toast提示信息，提示用户成功设置同步 + 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 + } + } + + private void removeSyncAccount() {//删除同步账户 + SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);//存放数据和读取数据 + 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); + }//若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() {//新线程的创建 + public void run() { + ContentValues values = new ContentValues(); + values.put(NoteColumns.GTASK_ID, ""); + values.put(NoteColumns.SYNC_ID, 0); + getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null); + }//清除本地的gtask关联的信息，将一些参数设置为0或NULL + }).start(); + } + + public static String getSyncAccountName(Context context) { + SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, + Context.MODE_PRIVATE); + return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, ""); + }//获取同步账户名称 + + 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 + }//设置最终同步的时间 + + public static long getLastSyncTime(Context context) {//获取最终同步时间 + SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, + Context.MODE_PRIVATE);//通过共享，获取时间 + return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0); + } + + private class GTaskReceiver extends BroadcastReceiver {//接受同步信息 + + @Override + public void onReceive(Context context, Intent intent) {//响应接收广播的情况 + refreshUI(); + if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) { + 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 + }//获取随广播而来的Intent中的同步服务的数据 + + } + } + + public boolean onOptionsItemSelected(MenuItem item) {//处理菜单的选项 + switch (item.getItemId()) {//根据选项的id选择 + case android.R.id.home://返回主界面 + Intent intent = new Intent(this, NotesListActivity.class); + intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); + startActivity(intent);//创建活动 + return true; + default://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 + return false; + } + } +}