增加Content Provider；完善了Markdown内容

README.md

@@ -3,9 +3,11 @@
 [![Commitizen friendly](https://img.shields.io/badge/commitizen-friendly-brightgreen.svg)](http://commitizen.github.io/cz-cli/)
 
 ## 阅读3.0
-书源规则 https://celeter.github.io
-
-[![aVElJs.th.jpg](https://s1.ax1x.com/2020/07/28/aVElJs.th.jpg)](https://imgchr.com/i/aVElJs) [![aVEQij.th.jpg](https://s1.ax1x.com/2020/07/28/aVEQij.th.jpg)](https://imgchr.com/i/aVEQij) [![aVEudg.th.jpg](https://s1.ax1x.com/2020/07/28/aVEudg.th.jpg)](https://imgchr.com/i/aVEudg) [![aVEneS.th.jpg](https://s1.ax1x.com/2020/07/28/aVEneS.th.jpg)](https://imgchr.com/i/aVEneS) [![aVEKoQ.th.jpg](https://s1.ax1x.com/2020/07/28/aVEKoQ.th.jpg)](https://imgchr.com/i/aVEKoQ) [![aVE1Wn.th.jpg](https://s1.ax1x.com/2020/07/28/aVE1Wn.th.jpg)](https://imgchr.com/i/aVE1Wn)
+书源规则 https://celeter.github.io  
+### 阅读API
+阅读3.0 提供了2种方式的API：`Web方式`和`Content Provider方式`。您可以在[这里](api.md)根据需要自行调用。 
 
 ## 免责声明
+[![aVElJs.th.jpg](https://s1.ax1x.com/2020/07/28/aVElJs.th.jpg)](https://imgchr.com/i/aVElJs) [![aVEQij.th.jpg](https://s1.ax1x.com/2020/07/28/aVEQij.th.jpg)](https://imgchr.com/i/aVEQij) [![aVEudg.th.jpg](https://s1.ax1x.com/2020/07/28/aVEudg.th.jpg)](https://imgchr.com/i/aVEudg) [![aVEneS.th.jpg](https://s1.ax1x.com/2020/07/28/aVEneS.th.jpg)](https://imgchr.com/i/aVEneS) [![aVEKoQ.th.jpg](https://s1.ax1x.com/2020/07/28/aVEKoQ.th.jpg)](https://imgchr.com/i/aVEKoQ) [![aVE1Wn.th.jpg](https://s1.ax1x.com/2020/07/28/aVE1Wn.th.jpg)](https://imgchr.com/i/aVE1Wn)
+
 https://gedoor.github.io/MyBookshelf/disclaimer.html

api.md

@@ -0,0 +1,88 @@
+#阅读API
+## 对于Web的配置
+您需要先在设置中启用"Web 服务"。  
+## 使用
+### Web
+待补充
+### Content Provider
+#### 插入单个书源
+```
+URL = content://io.legado.app.api.ReaderProvider/source/insert
+Method = insert
+```
+
+创建`Key="json"`的`ContentValues`，内容为`JSON`字符串，  
+格式参考[这个文件](https://github.com/gedoor/legado/blob/master/app/src/main/java/io/legado/app/data/entities/BookSource.kt)
+
+#### 插入多个书源
+```
+URL = content://io.legado.app.api.ReaderProvider/sources/insert
+Method = insert
+```
+
+创建`Key="json"`的`ContentValues`，内容为`JSON`字符串，  
+格式参考[这个文件](https://github.com/gedoor/legado/blob/master/app/src/main/java/io/legado/app/data/entities/BookSource.kt)，**为数组格式**。
+
+#### 获取书源
+```
+URL = content://io.legado.app.api.ReaderProvider/source/query?url=xxx
+Method = query
+```
+
+获取指定URL对应的书源信息。  
+用`Cursor.getString(0)`取出返回结果。
+
+#### 获取所有书源
+```
+URL = content://io.legado.app.api.ReaderProvider/sources/query
+Method = query
+```
+
+获取APP内的所有书源。  
+用`Cursor.getString(0)`取出返回结果。
+
+#### 删除多个书源
+```
+URL = content://io.legado.app.api.ReaderProvider/sources/delete
+Method = delete
+```
+
+创建`Key="json"`的`ContentValues`，内容为`JSON`字符串，  
+格式参考[这个文件](https://github.com/gedoor/legado/blob/master/app/src/main/java/io/legado/app/data/entities/BookSource.kt)，**为数组格式**。
+
+#### 插入书籍
+```
+URL = content://io.legado.app.api.ReaderProvider/book/insert
+Method = insert
+```
+
+创建`Key="json"`的`ContentValues`，内容为`JSON`字符串，  
+格式参考[这个文件](https://github.com/gedoor/legado/blob/master/app/src/main/java/io/legado/app/data/entities/Book.kt)。
+
+#### 获取所有书籍
+```
+URL = content://io.legado.app.api.ReaderProvider/books/query
+Method = query
+```
+
+获取APP内的所有书籍。  
+用`Cursor.getString(0)`取出返回结果。
+
+#### 获取书籍章节列表
+```
+URL = content://io.legado.app.api.ReaderProvider/book/chapter/query?url=xxx
+Method = query
+```
+
+获取指定图书的章节列表。   
+用`Cursor.getString(0)`取出返回结果。
+
+#### 获取书籍内容
+
+```
+URL = content://io.legado.app.api.ReaderProvider/book/content/query?url=xxx&index=1
+Method = query
+```
+
+获取指定图书的第`index`章节的文本内容。     
+用`Cursor.getString(0)`取出返回结果。

app/src/androidTest/java/io/legado/app/ExampleInstrumentedTest.kt

@@ -1,5 +1,7 @@
 package io.legado.app
 
+import android.net.Uri
+import android.util.Log
 import androidx.test.InstrumentationRegistry
 import androidx.test.runner.AndroidJUnit4
 
@@ -16,9 +18,12 @@ import org.junit.Assert.*
 @RunWith(AndroidJUnit4::class)
 class ExampleInstrumentedTest {
     @Test
-    fun useAppContext() {
+    fun testContentProvider() {
         // Context of the app under test.
         val appContext = InstrumentationRegistry.getTargetContext()
-        assertEquals("cn.legado.book", appContext.packageName)
-    }
+        Log.d("test",
+            appContext.contentResolver.query(Uri.parse("content://io.legado.app.api.ReaderProvider/sources/query"),null,null,null,null)
+                !!.getString(0)
+        )
+          }
 }

app/src/main/AndroidManifest.xml

@@ -25,164 +25,163 @@
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:networkSecurityConfig="@xml/network_security_config"
-        android:supportsRtl="true"
         android:requestLegacyExternalStorage="true"
+        android:supportsRtl="true"
         android:theme="@style/AppTheme.Light"
         tools:ignore="AllowBackup,GoogleAppIndexingWarning,UnusedAttribute">
-        <!--主入口-->
+        <provider
+            android:name=".api.ReaderProvider"
+            android:authorities="io.legado.app.api.ReaderProvider"
+            android:enabled="true"
+            android:exported="true" />
+        <!-- 主入口 -->
         <activity android:name=".ui.welcome.WelcomeActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+
             <meta-data
                 android:name="android.app.shortcuts"
-                android:resource="@xml/shortcuts"
-                android:launchMode="singleTask" />
-        </activity>
-        <!--图标1-->
+                android:launchMode="singleTask"
+                android:resource="@xml/shortcuts" />
+        </activity> <!-- 图标1 -->
         <activity
             android:name=".ui.welcome.Launcher1"
-            android:icon="@mipmap/launcher1"
-            android:enabled="false">
+            android:enabled="false"
+            android:icon="@mipmap/launcher1">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+
             <meta-data
                 android:name="android.app.shortcuts"
-                android:resource="@xml/shortcuts"
-                android:launchMode="singleTask" />
-        </activity>
-        <!--图标2-->
+                android:launchMode="singleTask"
+                android:resource="@xml/shortcuts" />
+        </activity> <!-- 图标2 -->
         <activity
             android:name=".ui.welcome.Launcher2"
-            android:icon="@mipmap/launcher2"
-            android:enabled="false">
+            android:enabled="false"
+            android:icon="@mipmap/launcher2">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+
             <meta-data
                 android:name="android.app.shortcuts"
-                android:resource="@xml/shortcuts"
-                android:launchMode="singleTask" />
-        </activity>
-        <!--图标3-->
+                android:launchMode="singleTask"
+                android:resource="@xml/shortcuts" />
+        </activity> <!-- 图标3 -->
         <activity
             android:name=".ui.welcome.Launcher3"
-            android:icon="@mipmap/launcher3"
-            android:enabled="false">
+            android:enabled="false"
+            android:icon="@mipmap/launcher3">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+
             <meta-data
                 android:name="android.app.shortcuts"
-                android:resource="@xml/shortcuts"
-                android:launchMode="singleTask" />
-        </activity>
-        <!--图标4-->
+                android:launchMode="singleTask"
+                android:resource="@xml/shortcuts" />
+        </activity> <!-- 图标4 -->
         <activity
             android:name=".ui.welcome.Launcher4"
-            android:icon="@mipmap/launcher4"
-            android:enabled="false">
+            android:enabled="false"
+            android:icon="@mipmap/launcher4">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+
             <meta-data
                 android:name="android.app.shortcuts"
-                android:resource="@xml/shortcuts"
-                android:launchMode="singleTask" />
-        </activity>
-        <!--图标5-->
+                android:launchMode="singleTask"
+                android:resource="@xml/shortcuts" />
+        </activity> <!-- 图标5 -->
         <activity
             android:name=".ui.welcome.Launcher5"
-            android:icon="@mipmap/launcher5"
-            android:enabled="false">
+            android:enabled="false"
+            android:icon="@mipmap/launcher5">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+
             <meta-data
                 android:name="android.app.shortcuts"
-                android:resource="@xml/shortcuts"
-                android:launchMode="singleTask" />
-        </activity>
-        <!--图标6-->
+                android:launchMode="singleTask"
+                android:resource="@xml/shortcuts" />
+        </activity> <!-- 图标6 -->
         <activity
             android:name=".ui.welcome.Launcher6"
-            android:icon="@mipmap/launcher6"
-            android:enabled="false">
+            android:enabled="false"
+            android:icon="@mipmap/launcher6">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+
             <meta-data
                 android:name="android.app.shortcuts"
-                android:resource="@xml/shortcuts"
-                android:launchMode="singleTask" />
-        </activity>
-        <!--主界面-->
+                android:launchMode="singleTask"
+                android:resource="@xml/shortcuts" />
+        </activity> <!-- 主界面 -->
         <activity
             android:name=".ui.main.MainActivity"
-            android:launchMode="singleTask"
-            android:alwaysRetainTaskState="true" />
-        <!--阅读界面-->
+            android:alwaysRetainTaskState="true"
+            android:launchMode="singleTask" /> <!-- 阅读界面 -->
         <activity
             android:name=".ui.book.read.ReadBookActivity"
             android:configChanges="locale|keyboardHidden|orientation|screenSize|smallestScreenSize|screenLayout"
-            android:launchMode="singleTask" />
-        <!--书籍详情页-->
+            android:launchMode="singleTask" /> <!-- 书籍详情页 -->
         <activity
             android:name=".ui.book.info.BookInfoActivity"
-            android:launchMode="singleTop" />
-        <!--书籍信息编辑-->
+            android:launchMode="singleTop" /> <!-- 书籍信息编辑 -->
         <activity
-            android:name="io.legado.app.ui.book.info.edit.BookInfoEditActivity"
-            android:launchMode="singleTask" />
-        <!--音频播放界面-->
+            android:name=".ui.book.info.edit.BookInfoEditActivity"
+            android:launchMode="singleTask" /> <!-- 音频播放界面 -->
         <activity
             android:name=".ui.audio.AudioPlayActivity"
-            android:launchMode="singleTask" />
-        <!--授权界面-->
+            android:launchMode="singleTask" /> <!-- 授权界面 -->
         <activity
             android:name=".help.permission.PermissionActivity"
-            android:theme="@style/Activity.Permission" />
-        <!--二维码扫描-->
+            android:theme="@style/Activity.Permission" /> <!-- 二维码扫描 -->
         <activity
             android:name=".ui.qrcode.QrCodeActivity"
-            android:launchMode="singleTask" />
-        <!--书源编辑-->
+            android:launchMode="singleTask" /> <!-- 书源编辑 -->
         <activity
             android:name=".ui.book.source.edit.BookSourceEditActivity"
             android:configChanges="locale|keyboardHidden|orientation|screenSize|smallestScreenSize|screenLayout"
             android:launchMode="singleTask"
-            android:windowSoftInputMode="adjustResize|stateHidden" />
-        <!--订阅源编辑-->
+            android:windowSoftInputMode="adjustResize|stateHidden" /> <!-- 订阅源编辑 -->
         <activity
             android:name=".ui.rss.source.edit.RssSourceEditActivity"
             android:configChanges="locale|keyboardHidden|orientation|screenSize|smallestScreenSize|screenLayout"
             android:launchMode="singleTask"
-            android:windowSoftInputMode="adjustResize|stateHidden" />
-        <!--配置界面-->
+            android:windowSoftInputMode="adjustResize|stateHidden" /> <!-- 配置界面 -->
         <activity
             android:name=".ui.config.ConfigActivity"
-            android:launchMode="singleTask" />
-        <!--搜索界面-->
+            android:launchMode="singleTask" /> <!-- 搜索界面 -->
         <activity
-            android:name="io.legado.app.ui.book.search.SearchActivity"
-            android:launchMode="singleTask" />
-        <!--关于界面-->
+            android:name=".ui.book.search.SearchActivity"
+            android:launchMode="singleTask" /> <!-- 关于界面 -->
         <activity
             android:name=".ui.about.AboutActivity"
-            android:launchMode="singleTask" />
-        <!--捐赠界面-->
+            android:launchMode="singleTask" /> <!-- 捐赠界面 -->
         <activity
             android:name=".ui.about.DonateActivity"
-            android:launchMode="singleTask" />
-        <!--书源管理-->
+            android:launchMode="singleTask" /> <!-- 书源管理 -->
         <activity
             android:name=".ui.book.source.manage.BookSourceActivity"
             android:launchMode="singleTop">
@@ -196,8 +195,7 @@
                     android:host="booksource"
                     android:scheme="yuedu" />
             </intent-filter>
-        </activity>
-        <!--订阅源管理-->
+        </activity> <!-- 订阅源管理 -->
         <activity
             android:name=".ui.rss.source.manage.RssSourceActivity"
             android:launchMode="singleTop">
@@ -211,8 +209,7 @@
                     android:host="rsssource"
                     android:scheme="yuedu" />
             </intent-filter>
-        </activity>
-        <!--替换规则界面-->
+        </activity> <!-- 替换规则界面 -->
         <activity
             android:name=".ui.replacerule.ReplaceRuleActivity"
             android:launchMode="singleTop">
@@ -226,67 +223,59 @@
                     android:host="replace"
                     android:scheme="yuedu" />
             </intent-filter>
-        </activity>
-        <!--书籍管理-->
+        </activity> <!-- 书籍管理 -->
         <activity
             android:name=".ui.book.arrange.ArrangeBookActivity"
-            android:launchMode="singleTop" />
-        <!--书源调试-->
+            android:launchMode="singleTop" /> <!-- 书源调试 -->
         <activity
             android:name=".ui.book.source.debug.BookSourceDebugActivity"
-            android:launchMode="singleTop" />
-        <!--目录-->
+            android:launchMode="singleTop" /> <!-- 目录 -->
         <activity
-            android:name="io.legado.app.ui.book.chapterlist.ChapterListActivity"
-            android:screenOrientation="behind"
-            android:launchMode="singleTop" />
-        <!--RSS条目-->
+            android:name=".ui.book.chapterlist.ChapterListActivity"
+            android:launchMode="singleTop"
+            android:screenOrientation="behind" /> <!-- RSS条目 -->
         <activity
             android:name=".ui.rss.article.RssSortActivity"
-            android:launchMode="singleTop" />
-        <!--RSS阅读-->
+            android:launchMode="singleTop" /> <!-- RSS阅读 -->
         <activity
             android:name=".ui.rss.read.ReadRssActivity"
             android:configChanges="orientation|screenSize"
             android:hardwareAccelerated="true"
-            android:launchMode="singleTop" />
-        <!--导入书籍-->
+            android:launchMode="singleTop" /> <!-- 导入书籍 -->
         <activity
-            android:name="io.legado.app.ui.book.local.ImportBookActivity"
-            android:launchMode="singleTop" />
-        <!--发现界面-->
+            android:name=".ui.book.local.ImportBookActivity"
+            android:launchMode="singleTop" /> <!-- 发现界面 -->
         <activity
-            android:name="io.legado.app.ui.book.explore.ExploreShowActivity"
-            android:launchMode="singleTop" />
-        <!--订阅源调试-->
+            android:name=".ui.book.explore.ExploreShowActivity"
+            android:launchMode="singleTop" /> <!-- 订阅源调试 -->
         <activity
             android:name=".ui.rss.source.debug.RssSourceDebugActivity"
-            android:launchMode="singleTop" />
-        <!--Rss收藏-->
+            android:launchMode="singleTop" /> <!-- Rss收藏 -->
         <activity
             android:name=".ui.rss.favorites.RssFavoritesActivity"
-            android:launchMode="singleTop" />
-        <!--下载界面-->
+            android:launchMode="singleTop" /> <!-- 下载界面 -->
         <activity
-            android:name="io.legado.app.ui.book.download.DownloadActivity"
-            android:launchMode="singleTop" />
-        <!--书源登录-->
+            android:name=".ui.book.download.DownloadActivity"
+            android:launchMode="singleTop" /> <!-- 书源登录 -->
         <activity
             android:name=".ui.login.SourceLogin"
             android:configChanges="orientation|screenSize"
-            android:hardwareAccelerated="true" />
-        <!--文字处理-->
+            android:hardwareAccelerated="true" /> <!-- 文字处理 -->
         <activity
             android:name=".receiver.SharedReceiverActivity"
             android:label="@string/receiving_shared_label">
             <intent-filter>
                 <action android:name="android.intent.action.PROCESS_TEXT" />
+
                 <category android:name="android.intent.category.DEFAULT" />
+
                 <data android:mimeType="text/plain" />
             </intent-filter>
             <intent-filter>
                 <action android:name="android.intent.action.SEND" />
+
                 <category android:name="android.intent.category.DEFAULT" />
+
                 <data android:mimeType="text/plain" />
             </intent-filter>
         </activity>

app/src/main/java/io/legado/app/api/ReaderProvider.java

@@ -0,0 +1,358 @@
+/*
+ * Copyright (C) 2020 w568w
+ */
+
+package io.legado.app.api;
+
+import android.content.ContentProvider;
+import android.content.ContentResolver;
+import android.content.ContentValues;
+import android.content.UriMatcher;
+import android.database.CharArrayBuffer;
+import android.database.ContentObserver;
+import android.database.Cursor;
+import android.database.DataSetObserver;
+import android.net.Uri;
+import android.os.Bundle;
+
+import com.google.gson.Gson;
+
+import org.jetbrains.annotations.NotNull;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Map;
+
+import io.legado.app.web.controller.BookshelfController;
+import io.legado.app.web.controller.SourceController;
+import io.legado.app.web.utils.ReturnData;
+
+/**
+ * Export book data to other app.
+ */
+public class ReaderProvider extends ContentProvider {
+    private enum RequestCode {
+        saveSource, saveSources, saveBook, deleteSources, getSource, getSources, getBookshelf, getChapterList, getBookContent
+    }
+
+    public static final String POST_BODY_KEY = "json";
+    public static final String AUTHORITY = "io.legado.app.api.ReaderProvider";
+    private static UriMatcher sMatcher = new UriMatcher(UriMatcher.NO_MATCH);
+    private SourceController mSourceController;
+    private BookshelfController mBookshelfController;
+
+    static {
+        sMatcher.addURI(AUTHORITY, "source/insert", RequestCode.saveSource.ordinal());
+        sMatcher.addURI(AUTHORITY, "sources/insert", RequestCode.saveSources.ordinal());
+        sMatcher.addURI(AUTHORITY, "book/insert", RequestCode.saveBook.ordinal());
+        sMatcher.addURI(AUTHORITY, "sources/delete", RequestCode.deleteSources.ordinal());
+        sMatcher.addURI(AUTHORITY, "source/query", RequestCode.getSource.ordinal());
+        sMatcher.addURI(AUTHORITY, "sources/query", RequestCode.getSources.ordinal());
+        sMatcher.addURI(AUTHORITY, "books/query", RequestCode.getBookshelf.ordinal());
+        sMatcher.addURI(AUTHORITY, "book/chapter/query", RequestCode.getChapterList.ordinal());
+        sMatcher.addURI(AUTHORITY, "book/content/query", RequestCode.getBookContent.ordinal());
+    }
+
+    public ReaderProvider() {
+    }
+
+    @Override
+    public int delete(@NotNull Uri uri, String selection, String[] selectionArgs) {
+        if (sMatcher.match(uri) < 0)
+            return -1;
+        switch (RequestCode.values()[sMatcher.match(uri)]) {
+            case deleteSources:
+                mSourceController.deleteSources(selection);
+                break;
+            default:
+                throw new IllegalStateException("Unexpected value: " + RequestCode.values()[sMatcher.match(uri)].name());
+        }
+        return 0;
+    }
+
+    @Override
+    public String getType(@NotNull Uri uri) {
+        throw new UnsupportedOperationException("Not yet implemented");
+    }
+
+    @Override
+    public Uri insert(@NotNull Uri uri, ContentValues values) {
+        if (sMatcher.match(uri) < 0)
+            return null;
+        switch (RequestCode.values()[sMatcher.match(uri)]) {
+            case saveSource:
+                mSourceController.saveSource(values.getAsString(POST_BODY_KEY));
+                break;
+            case saveBook:
+                mBookshelfController.saveBook(values.getAsString(POST_BODY_KEY));
+            case saveSources:
+                mSourceController.saveSources(values.getAsString(POST_BODY_KEY));
+            default:
+                throw new IllegalStateException("Unexpected value: " + RequestCode.values()[sMatcher.match(uri)].name());
+        }
+        return null;
+    }
+
+    @Override
+    public boolean onCreate() {
+        mSourceController = new SourceController();
+        mBookshelfController = new BookshelfController();
+        return false;
+    }
+
+    @Override
+    public Cursor query(Uri uri, String[] projection, String selection,
+                        String[] selectionArgs, String sortOrder) {
+
+        Map<String, ArrayList<String>> map = new HashMap<>();
+
+        ArrayList<String> list = new ArrayList<>();
+        list.add(uri.getQueryParameter("url"));
+        map.put("url", list);
+
+        list = new ArrayList<>();
+        list.add(uri.getQueryParameter("index"));
+        map.put("index", list);
+
+        if (sMatcher.match(uri) < 0)
+            return null;
+        switch (RequestCode.values()[sMatcher.match(uri)]) {
+            case getSource:
+                return new SimpleCursor(mSourceController.getSource(map));
+            case getSources:
+                return new SimpleCursor(mSourceController.getSources());
+            case getBookshelf:
+                return new SimpleCursor(mBookshelfController.getBookshelf());
+            case getBookContent:
+                return new SimpleCursor(mBookshelfController.getBookContent(map));
+            case getChapterList:
+                return new SimpleCursor(mBookshelfController.getChapterList(map));
+            default:
+                throw new IllegalStateException("Unexpected value: " + RequestCode.values()[sMatcher.match(uri)].name());
+        }
+    }
+
+    @Override
+    public int update(@NotNull Uri uri, ContentValues values, String selection,
+                      String[] selectionArgs) {
+        throw new UnsupportedOperationException("Not yet implemented");
+    }
+
+    /**
+     * Simple inner class to deliver json callback data.
+     *
+     * Only getString() makes sense.
+     */
+    private static class SimpleCursor implements Cursor {
+        private String mData;
+
+        public SimpleCursor(ReturnData data) {
+            this.mData = new Gson().toJson(data);
+        }
+
+        @Override
+        public int getCount() {
+            return 1;
+        }
+
+        @Override
+        public int getPosition() {
+            return 0;
+        }
+
+        @Override
+        public boolean move(int i) {
+            return true;
+        }
+
+        @Override
+        public boolean moveToPosition(int i) {
+            return true;
+        }
+
+        @Override
+        public boolean moveToFirst() {
+            return true;
+        }
+
+        @Override
+        public boolean moveToLast() {
+            return true;
+        }
+
+        @Override
+        public boolean moveToNext() {
+            return true;
+        }
+
+        @Override
+        public boolean moveToPrevious() {
+            return true;
+        }
+
+        @Override
+        public boolean isFirst() {
+            return true;
+        }
+
+        @Override
+        public boolean isLast() {
+            return true;
+        }
+
+        @Override
+        public boolean isBeforeFirst() {
+            return false;
+        }
+
+        @Override
+        public boolean isAfterLast() {
+            return false;
+        }
+
+        @Override
+        public int getColumnIndex(String s) {
+            return 0;
+        }
+
+        @Override
+        public int getColumnIndexOrThrow(String s) throws IllegalArgumentException {
+            throw new UnsupportedOperationException("Not yet implemented");
+        }
+
+        @Override
+        public String getColumnName(int i) {
+            return null;
+        }
+
+        @Override
+        public String[] getColumnNames() {
+            return new String[0];
+        }
+
+        @Override
+        public int getColumnCount() {
+            return 0;
+        }
+
+        @Override
+        public byte[] getBlob(int i) {
+            return new byte[0];
+        }
+
+        @Override
+        public String getString(int i) {
+            return mData;
+        }
+
+        @Override
+        public void copyStringToBuffer(int i, CharArrayBuffer charArrayBuffer) {
+
+        }
+
+        @Override
+        public short getShort(int i) {
+            return 0;
+        }
+
+        @Override
+        public int getInt(int i) {
+            return 0;
+        }
+
+        @Override
+        public long getLong(int i) {
+            return 0;
+        }
+
+        @Override
+        public float getFloat(int i) {
+            return 0;
+        }
+
+        @Override
+        public double getDouble(int i) {
+            return 0;
+        }
+
+        @Override
+        public int getType(int i) {
+            return 0;
+        }
+
+        @Override
+        public boolean isNull(int i) {
+            return false;
+        }
+
+        @Override
+        public void deactivate() {
+
+        }
+
+        @Override
+        public boolean requery() {
+            return false;
+        }
+
+        @Override
+        public void close() {
+
+        }
+
+        @Override
+        public boolean isClosed() {
+            return false;
+        }
+
+        @Override
+        public void registerContentObserver(ContentObserver contentObserver) {
+
+        }
+
+        @Override
+        public void unregisterContentObserver(ContentObserver contentObserver) {
+
+        }
+
+        @Override
+        public void registerDataSetObserver(DataSetObserver dataSetObserver) {
+
+        }
+
+        @Override
+        public void unregisterDataSetObserver(DataSetObserver dataSetObserver) {
+
+        }
+
+        @Override
+        public void setNotificationUri(ContentResolver contentResolver, Uri uri) {
+
+        }
+
+        @Override
+        public Uri getNotificationUri() {
+            return null;
+        }
+
+        @Override
+        public boolean getWantsAllOnMoveCalls() {
+            return false;
+        }
+
+        @Override
+        public void setExtras(Bundle bundle) {
+
+        }
+
+        @Override
+        public Bundle getExtras() {
+            return null;
+        }
+
+        @Override
+        public Bundle respond(Bundle bundle) {
+            return null;
+        }
+    }
+}