ADD

src/tool/DataUtils.java

@@ -0,0 +1,300 @@
+/*
+ * 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.tool;
+
+import android.content.ContentProviderOperation;
+import android.content.ContentProviderResult;
+import android.content.ContentResolver;
+import android.content.ContentUris;
+import android.content.ContentValues;
+import android.content.OperationApplicationException;
+import android.database.Cursor;
+import android.os.RemoteException;
+import android.util.Log;
+
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.CallNote;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.ui.NotesListAdapter.AppWidgetAttribute;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+
+
+package net.micode.notes.tool;
+ 
+public class DataUtils {
+    public static final String TAG = "DataUtils";
+    public static boolean batchDeleteNotes(ContentResolver resolver, HashSet<Long> ids) {   //直接删除笔记
+        if (ids == null) {
+            Log.d(TAG, "the ids is null");
+            return true;
+        }
+        if (ids.size() == 0) {
+            Log.d(TAG, "no id is in the hashset");
+            return true;
+        }
+ 
+        ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();  //提供一个任务列表
+        for (long id : ids) {
+            if(id == Notes.ID_ROOT_FOLDER) {
+                Log.e(TAG, "Don't delete system folder root");
+                continue;
+            }  //如果发现是根文件夹，则不删除
+            ContentProviderOperation.Builder builder = ContentProviderOperation
+                    .newDelete(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));  //用newDelete实现删除功能
+            operationList.add(builder.build());   //
+        }
+        try {
+            ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);//主机名（或叫Authority）用于唯一标识这个ContentProvider，外部调用者可以根据这个标识来找到它。
+            //数据库事务，数据库事务是由一组数据库操作序列组成，事务作为一个整体被执行
+            if (results == null || results.length == 0 || results[0] == null) {
+                Log.d(TAG, "delete notes failed, ids:" + ids.toString());
+                return false;
+            }
+            return true;
+        } catch (RemoteException e) {
+            Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
+        } catch (OperationApplicationException e) {
+            Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
+        }
+        return false;
+    }
+ 
+    public static void moveNoteToFoler(ContentResolver resolver, long id, long srcFolderId, long desFolderId) {
+        ContentValues values = new ContentValues();
+        values.put(NoteColumns.PARENT_ID, desFolderId);
+        values.put(NoteColumns.ORIGIN_PARENT_ID, srcFolderId);
+        values.put(NoteColumns.LOCAL_MODIFIED, 1);
+        resolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id), values, null, null);  //对需要移动的便签进行数据更新，然后用update实现
+    }
+ 
+    public static boolean batchMoveToFolder(ContentResolver resolver, HashSet<Long> ids,
+            long folderId) {
+        if (ids == null) {
+            Log.d(TAG, "the ids is null");
+            return true;
+        }
+ 
+        ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
+        for (long id : ids) {
+            ContentProviderOperation.Builder builder = ContentProviderOperation
+                    .newUpdate(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));  //通过withAppendedId方法，为该Uri加上ID
+            builder.withValue(NoteColumns.PARENT_ID, folderId);
+            builder.withValue(NoteColumns.LOCAL_MODIFIED, 1);
+            operationList.add(builder.build());
+        }//将ids里包含的每一列的数据逐次加入到operationList中，等待最后的批量处理
+ 
+        try {
+            ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);  //applyBatch一次性处理一个操作列表
+            if (results == null || results.length == 0 || results[0] == null) {
+                Log.d(TAG, "delete notes failed, ids:" + ids.toString());
+                return false;
+            }
+            return true;
+        } catch (RemoteException e) {
+            Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
+        } catch (OperationApplicationException e) {
+            Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
+        }
+        return false;
+    }
+ 
+    /**
+     * Get the all folder count except system folders {@link Notes#TYPE_SYSTEM}}
+     */
+    public static int getUserFolderCount(ContentResolver resolver) {
+        Cursor cursor =resolver.query(Notes.CONTENT_NOTE_URI,
+                new String[] { "COUNT(*)" },
+                NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>?",
+                new String[] { String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_TRASH_FOLER)},
+                null);  //筛选条件：源文件不为trash folder
+ 
+        int count = 0;
+        if(cursor != null) {
+            if(cursor.moveToFirst()) {
+                try {
+                    count = cursor.getInt(0);  
+                } catch (IndexOutOfBoundsException e) {
+                    Log.e(TAG, "get folder count failed:" + e.toString());
+                } finally {
+                    cursor.close();
+                }
+            }
+        }
+        return count;
+    } 
+ 
+    public static boolean visibleInNoteDatabase(ContentResolver resolver, long noteId, int type) {
+        Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), //通过withAppendedId方法，为该Uri加上ID
+                null,
+                NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER,
+                new String [] {String.valueOf(type)},   
+                null); //查询条件：type符合，且不属于垃圾文件夹
+ 
+        boolean exist = false;
+        if (cursor != null) {
+            if (cursor.getCount() > 0) {//用getcount函数判断cursor是否为空
+                exist = true;
+            }
+            cursor.close();
+        }
+        return exist;
+    }
+ 
+    public static boolean existInNoteDatabase(ContentResolver resolver, long noteId) {
+        Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
+                null, null, null, null);
+ 
+        boolean exist = false;
+        if (cursor != null) {
+            if (cursor.getCount() > 0) {
+                exist = true;
+            }
+            cursor.close();
+        }
+        return exist;
+    }
+ 
+    public static boolean existInDataDatabase(ContentResolver resolver, long dataId) {
+        Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId),
+                null, null, null, null);
+ 
+        boolean exist = false;
+        if (cursor != null) {
+            if (cursor.getCount() > 0) {
+                exist = true;
+            }
+            cursor.close();
+        }
+        return exist;
+    }
+ 
+    public static boolean checkVisibleFolderName(ContentResolver resolver, String name) {
+        Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI, null,
+                NoteColumns.TYPE + "=" + Notes.TYPE_FOLDER +
+                " AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER +
+                " AND " + NoteColumns.SNIPPET + "=?",
+                new String[] { name }, null);
+        //通过名字查询文件是否存在
+        boolean exist = false;
+        if(cursor != null) {
+            if(cursor.getCount() > 0) {
+                exist = true;
+            }
+            cursor.close();
+        }
+        return exist;
+    }
+ 
+    public static HashSet<AppWidgetAttribute> getFolderNoteWidget(ContentResolver resolver, long folderId) {
+        Cursor c = resolver.query(Notes.CONTENT_NOTE_URI,
+                new String[] { NoteColumns.WIDGET_ID, NoteColumns.WIDGET_TYPE },
+                NoteColumns.PARENT_ID + "=?",
+                new String[] { String.valueOf(folderId) },
+                null); //查询条件：父ID是传入的folderId;
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
+        HashSet<AppWidgetAttribute> set = null;
+        if (c != null) {
+            if (c.moveToFirst()) {
+                set = new HashSet<AppWidgetAttribute>();
+                do {
+                    try {
+                        AppWidgetAttribute widget = new AppWidgetAttribute();
+                        widget.widgetId = c.getInt(0);  //0对应的NoteColumns.WIDGET_ID
+                        widget.widgetType = c.getInt(1);  //1对应的NoteColumns.WIDGET_TYPE
+                        set.add(widget);
+                    } catch (IndexOutOfBoundsException e) {
+                        Log.e(TAG, e.toString());
+                    }
+                } while (c.moveToNext()); //查询下一条
+            }
+            c.close();
+        }
+        return set;
+    }
+ 
+    public static String getCallNumberByNoteId(ContentResolver resolver, long noteId) {
+        Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
+                new String [] { CallNote.PHONE_NUMBER },
+                CallNote.NOTE_ID + "=? AND " + CallNote.MIME_TYPE + "=?",
+                new String [] { String.valueOf(noteId), CallNote.CONTENT_ITEM_TYPE },
+                null);
+ 
+        if (cursor != null && cursor.moveToFirst()) {
+            try {
+                return cursor.getString(0);
+            } catch (IndexOutOfBoundsException e) {
+                Log.e(TAG, "Get call number fails " + e.toString());
+            } finally {
+                cursor.close();
+            }
+        }
+        return "";
+    }
+ 
+    public static long getNoteIdByPhoneNumberAndCallDate(ContentResolver resolver, String phoneNumber, long callDate) {
+        Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
+                new String [] { CallNote.NOTE_ID },
+                CallNote.CALL_DATE + "=? AND " + CallNote.MIME_TYPE + "=? AND PHONE_NUMBERS_EQUAL("
+                + CallNote.PHONE_NUMBER + ",?)",
+                new String [] { String.valueOf(callDate), CallNote.CONTENT_ITEM_TYPE, phoneNumber },
+                null);
+        //通过数据库操作，查询条件是（callDate和phoneNumber匹配传入参数的值）
+ 
+        if (cursor != null) {
+            if (cursor.moveToFirst()) {
+                try {
+                    return cursor.getLong(0); //0对应的CallNote.NOTE_ID
+                } catch (IndexOutOfBoundsException e) {
+                    Log.e(TAG, "Get call note id fails " + e.toString());
+                }
+            }
+            cursor.close();
+        }
+        return 0;
+    }
+ 
+    public static String getSnippetById(ContentResolver resolver, long noteId) {
+        Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI,
+                new String [] { NoteColumns.SNIPPET },
+                NoteColumns.ID + "=?",
+                new String [] { String.valueOf(noteId)},
+                null);//查询条件：noteId
+ 
+        if (cursor != null) {
+            String snippet = "";
+            if (cursor.moveToFirst()) {
+                snippet = cursor.getString(0);
+            }
+            cursor.close();
+            return snippet;
+        }
+        throw new IllegalArgumentException("Note is not found with id: " + noteId);
+    }
+    public static String getFormattedSnippet(String snippet) {  //对字符串进行格式处理，将字符串两头的空格去掉，同时将换行符去掉
+        if (snippet != null) {
+            snippet = snippet.trim();
+            int index = snippet.indexOf('\n');
+            if (index != -1) {
+                snippet = snippet.substring(0, index);
+            }
+        }
+        return snippet;
+    }
+    
+}

src/tool/GTaskStringUtils.java

@@ -0,0 +1,115 @@
+/*
+ * 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.
+ */
+
+//定义了静态字符串，提供jsonObject中相应字符串
+package net.micode.notes.tool;
+ 
+//这个类定义了jsonObject提供Key
+public class GTaskStringUtils { 
+ 
+    public final static String GTASK_JSON_ACTION_ID = "action_id";
+ 
+    public final static String GTASK_JSON_ACTION_LIST = "action_list";
+ 
+    public final static String GTASK_JSON_ACTION_TYPE = "action_type";
+ 
+    public final static String GTASK_JSON_ACTION_TYPE_CREATE = "create";
+ 
+    public final static String GTASK_JSON_ACTION_TYPE_GETALL = "get_all";
+ 
+    public final static String GTASK_JSON_ACTION_TYPE_MOVE = "move";
+ 
+    public final static String GTASK_JSON_ACTION_TYPE_UPDATE = "update";
+ 
+    public final static String GTASK_JSON_CREATOR_ID = "creator_id";
+ 
+    public final static String GTASK_JSON_CHILD_ENTITY = "child_entity";
+ 
+    public final static String GTASK_JSON_CLIENT_VERSION = "client_version";
+ 
+    public final static String GTASK_JSON_COMPLETED = "completed";
+ 
+    public final static String GTASK_JSON_CURRENT_LIST_ID = "current_list_id";
+ 
+    public final static String GTASK_JSON_DEFAULT_LIST_ID = "default_list_id";
+ 
+    public final static String GTASK_JSON_DELETED = "deleted";
+ 
+    public final static String GTASK_JSON_DEST_LIST = "dest_list";
+ 
+    public final static String GTASK_JSON_DEST_PARENT = "dest_parent";
+ 
+    public final static String GTASK_JSON_DEST_PARENT_TYPE = "dest_parent_type";
+ 
+    public final static String GTASK_JSON_ENTITY_DELTA = "entity_delta";
+ 
+    public final static String GTASK_JSON_ENTITY_TYPE = "entity_type";
+ 
+    public final static String GTASK_JSON_GET_DELETED = "get_deleted";
+ 
+    public final static String GTASK_JSON_ID = "id";
+ 
+    public final static String GTASK_JSON_INDEX = "index";
+ 
+    public final static String GTASK_JSON_LAST_MODIFIED = "last_modified";
+ 
+    public final static String GTASK_JSON_LATEST_SYNC_POINT = "latest_sync_point";
+ 
+    public final static String GTASK_JSON_LIST_ID = "list_id";
+ 
+    public final static String GTASK_JSON_LISTS = "lists";
+ 
+    public final static String GTASK_JSON_NAME = "name";
+ 
+    public final static String GTASK_JSON_NEW_ID = "new_id";
+ 
+    public final static String GTASK_JSON_NOTES = "notes";
+ 
+    public final static String GTASK_JSON_PARENT_ID = "parent_id";
+ 
+    public final static String GTASK_JSON_PRIOR_SIBLING_ID = "prior_sibling_id";
+ 
+    public final static String GTASK_JSON_RESULTS = "results";
+ 
+    public final static String GTASK_JSON_SOURCE_LIST = "source_list";
+ 
+    public final static String GTASK_JSON_TASKS = "tasks";
+ 
+    public final static String GTASK_JSON_TYPE = "type";
+ 
+    public final static String GTASK_JSON_TYPE_GROUP = "GROUP";
+ 
+    public final static String GTASK_JSON_TYPE_TASK = "TASK";
+ 
+    public final static String GTASK_JSON_USER = "user";
+ 
+    public final static String MIUI_FOLDER_PREFFIX = "[MIUI_Notes]";
+ 
+    public final static String FOLDER_DEFAULT = "Default";
+ 
+    public final static String FOLDER_CALL_NOTE = "Call_Note";
+ 
+    public final static String FOLDER_META = "METADATA";
+ 
+    public final static String META_HEAD_GTASK_ID = "meta_gid";
+ 
+    public final static String META_HEAD_NOTE = "meta_note";
+ 
+    public final static String META_HEAD_DATA = "meta_data";
+ 
+    public final static String META_NOTE_NAME = "[META INFO] DON'T UPDATE AND DELETE";
+ 
+}

src/tool/ResourceParser.java

@@ -0,0 +1,292 @@
+/*
+ * 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.tool;
+
+import android.content.Context;
+import android.preference.PreferenceManager;
+
+import net.micode.notes.R;
+import net.micode.notes.ui.NotesPreferenceActivity;
+
+/**
+ * ResourceParser类是一个工具类，用于解析应用程序中使用的资源。
+ */
+public class ResourceParser {
+
+    /**
+     * 定义背景颜色的常量
+     */
+    public static final int YELLOW           = 0;
+    public static final int BLUE             = 1;
+    public static final int WHITE            = 2;
+    public static final int GREEN            = 3;
+    public static final int RED              = 4;
+
+    /**
+     * 默认背景颜色
+     */
+    public static final int BG_DEFAULT_COLOR = YELLOW;
+
+    /**
+     * 定义文本大小的常量
+     */
+    public static final int TEXT_SMALL       = 0;
+    public static final int TEXT_MEDIUM      = 1;
+    public static final int TEXT_LARGE       = 2;
+    public static final int TEXT_SUPER       = 3;
+
+    /**
+     * 默认文本大小
+     */
+    public static final int BG_DEFAULT_FONT_SIZE = TEXT_MEDIUM;
+
+    /**
+     * NoteBgResources类包含与笔记编辑背景相关的资源。
+     */
+    public static class NoteBgResources {
+        /**
+         * 笔记编辑背景资源数组
+         */
+        private final static int [] BG_EDIT_RESOURCES = new int [] {
+            R.drawable.edit_yellow,
+            R.drawable.edit_blue,
+            R.drawable.edit_white,
+            R.drawable.edit_green,
+            R.drawable.edit_red
+        };
+
+        /**
+         * 笔记编辑标题背景资源数组
+         */
+        private final static int [] BG_EDIT_TITLE_RESOURCES = new int [] {
+            R.drawable.edit_title_yellow,
+            R.drawable.edit_title_blue,
+            R.drawable.edit_title_white,
+            R.drawable.edit_title_green,
+            R.drawable.edit_title_red
+        };
+
+        /**
+         * 获取笔记编辑背景资源
+         * @param id 资源id
+         * @return 笔记编辑背景资源
+         */
+        public static int getNoteBgResource(int id) {
+            return BG_EDIT_RESOURCES[id];
+        }
+
+        /**
+         * 获取笔记编辑标题背景资源
+         * @param id 资源id
+         * @return 笔记编辑标题背景资源
+         */
+        public static int getNoteTitleBgResource(int id) {
+            return BG_EDIT_TITLE_RESOURCES[id];
+        }
+    }
+
+    /**
+     * 获取默认背景id
+     * @param context 上下文对象
+     * @return 默认背景id
+     */
+    public static int getDefaultBgId(Context context) {
+        if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean(
+                NotesPreferenceActivity.PREFERENCE_SET_BG_COLOR_KEY, false)) {
+            return (int) (Math.random() * NoteBgResources.BG_EDIT_RESOURCES.length);
+        } else {
+            return BG_DEFAULT_COLOR;
+        }
+    }
+
+    /**
+     * NoteItemBgResources类包含与笔记列表项背景相关的资源。
+     */
+    public static class NoteItemBgResources {
+        /**
+         * 第一项背景资源数组
+         */
+        private final static int [] BG_FIRST_RESOURCES = new int [] {
+            R.drawable.list_yellow_up,
+            R.drawable.list_blue_up,
+            R.drawable.list_white_up,
+            R.drawable.list_green_up,
+            R.drawable.list_red_up
+        };
+
+        /**
+         * 普通项背景资源数组
+         */
+        private final static int [] BG_NORMAL_RESOURCES = new int [] {
+            R.drawable.list_yellow_middle,
+            R.drawable.list_blue_middle,
+            R.drawable.list_white_middle,
+            R.drawable.list_green_middle,
+            R.drawable.list_red_middle
+        };
+
+        /**
+         * 最后一项背景资源数组
+         */
+        private final static int [] BG_LAST_RESOURCES = new int [] {
+            R.drawable.list_yellow_down,
+            R.drawable.list_blue_down,
+            R.drawable.list_white_down,
+            R.drawable.list_green_down,
+            R.drawable.list_red_down,
+        };
+
+        /**
+         * 单项背景资源数组
+         */
+        private final static int [] BG_SINGLE_RESOURCES = new int [] {
+            R.drawable.list_yellow_single,
+            R.drawable.list_blue_single,
+            R.drawable.list_white_single,
+            R.drawable.list_green_single,
+            R.drawable.list_red_single
+        };
+
+        /**
+         * 获取第一项背景资源
+         * @param id 资源id
+         * @return 第一项背景资源
+         */
+        public static int getNoteBgFirstRes(int id) {
+            return BG_FIRST_RESOURCES[id];
+        }
+
+        /**
+         * 获取最后一项背景资源
+         * @param id 资源id
+         * @return 最后一项背景资源
+         */
+        public static int getNoteBgLastRes(int id) {
+            return BG_LAST_RESOURCES[id];
+        }
+
+        /**
+         * 获取单项背景资源
+         * @param id 资源id
+         * @return 单项背景资源
+         */
+        public static int getNoteBgSingleRes(int id) {
+            return BG_SINGLE_RESOURCES[id];
+        }
+
+        /**
+         * 获取普通项背景资源
+         * @param id 资源id
+         * @return 普通项背景资源
+         */
+        public static int getNoteBgNormalRes(int id) {
+            return BG_NORMAL_RESOURCES[id];
+        }
+
+        /**
+         * 获取文件夹背景资源
+         * @return 文件夹背景资源
+         */
+        public static int getFolderBgRes() {
+            return R.drawable.list_folder;
+        }
+    }
+
+    /**
+     * WidgetBgResources类包含与小部件背景相关的资源。
+     */
+    public static class WidgetBgResources {
+        /**
+         * 2x小部件背景资源数组
+         */
+        private final static int [] BG_2X_RESOURCES = new int [] {
+            R.drawable.widget_2x_yellow,
+            R.drawable.widget_2x_blue,
+            R.drawable.widget_2x_white,
+            R.drawable.widget_2x_green,
+            R.drawable.widget_2x_red,
+        };
+
+        /**
+         * 获取2x小部件背景资源
+         * @param id 资源id
+         * @return 2x小部件背景资源
+         */
+        public static int getWidget2xBgResource(int id) {
+            return BG_2X_RESOURCES[id];
+        }
+
+        /**
+         * 4x小部件背景资源数组
+         */
+        private final static int [] BG_4X_RESOURCES = new int [] {
+            R.drawable.widget_4x_yellow,
+            R.drawable.widget_4x_blue,
+            R.drawable.widget_4x_white,
+            R.drawable.widget_4x_green,
+            R.drawable.widget_4x_red
+        };
+
+        /**
+         * 获取4x小部件背景资源
+         * @param id 资源id
+         * @return 4x小部件背景资源
+         */
+        public static int getWidget4xBgResource(int id) {
+            return BG_4X_RESOURCES[id];
+        }
+    }
+
+    /**
+     * TextAppearanceResources类包含与文本外观相关的资源。
+     */
+    public static class TextAppearanceResources {
+        /**
+         * 文本外观资源数组
+         */
+        private final static int [] TEXTAPPEARANCE_RESOURCES = new int [] {
+            R.style.TextAppearanceNormal,
+            R.style.TextAppearanceMedium,
+            R.style.TextAppearanceLarge,
+            R.style.TextAppearanceSuper
+        };
+
+        /**
+         * 获取文本外观资源
+         * @param id 资源id
+         * @return 文本外观资源
+         */
+        public static int getTexAppearanceResource(int id) {
+            /**
+             * HACKME: 修复存储在共享首选项中的资源id的错误。
+             * id可能大于资源数组的长度，在这种情况下，返回BG_DEFAULT_FONT_SIZE。
+             */
+            if (id >= TEXTAPPEARANCE_RESOURCES.length) {
+                return BG_DEFAULT_FONT_SIZE;
+            }
+            return TEXTAPPEARANCE_RESOURCES[id];
+        }
+
+        /**
+         * 获取资源的大小
+         * @return 资源的大小
+         */
+        public static int getResourcesSize() {
+            return TEXTAPPEARANCE_RESOURCES.length;
+        }
+    }
+}