task

.idea/misc.xml

         <entry key="..\:/Work/XKL/XKL/XklLocal/app/src/main/res/layout/item_empty.xml" value="0.4979166666666667" />
         <entry key="..\:/Work/XKL/XKL/XklLocal/app/src/main/res/layout/item_historical_route.xml" value="0.4859375" />
         <entry key="..\:/Work/XKL/XKL/XklLocal/app/src/main/res/layout/item_spell_single_word.xml" value="0.23632218844984804" />
+        <entry key="..\:/Work/XKL/XKL/XklLocal/app/src/main/res/layout/item_task_image.xml" value="0.23353596757852077" />
         <entry key="..\:/Work/XKL/XKL/XklLocal/app/src/main/res/layout/main_item_course_progress.xml" value="0.25" />
         <entry key="..\:/Work/XKL/XKL/XklLocal/app/src/main/res/layout/main_item_coursepack.xml" value="0.43500866551126516" />
         <entry key="..\:/Work/XKL/XKL/XklLocal/app/src/main/res/layout/merge_recyclerview_smart_refresh_layout.xml" value="0.34427083333333336" />

app/build.gradle

     implementation customDependencies.grpc_android
     implementation customDependencies.grpc_protobuf
     implementation customDependencies.grpc_stub
+    //XPopup
+    implementation customDependencies.XPopup
 
 }

app/src/main/java/com/xkl/cdl/adapter/AdapterImageTask.kt

+package com.xkl.cdl.adapter
+
+import android.view.ViewGroup
+import android.widget.ImageView
+import com.suliang.common.base.adapter.BaseAdapterViewHolder
+import com.suliang.common.base.adapter.BaseRVAdapterVM
+import com.suliang.common.extension.click
+import com.suliang.common.util.image.ImageLoader
+import com.xkl.cdl.R
+import com.xkl.cdl.module.learn.LearnCTaskViewModel
+import java.io.File
+
+/**
+ * author suliang
+ * create 2022/5/23 14:44
+ * Describe:
+ */
+class AdapterImageTask(viewModel : LearnCTaskViewModel) : BaseRVAdapterVM<File, LearnCTaskViewModel>(viewModel) {
+    
+    override fun coverViewHolder(parent : ViewGroup, viewType : Int) : BaseAdapterViewHolder {
+        return BaseAdapterViewHolder(inflateBinding(parent, R.layout.item_task_image))
+    }
+    
+    override fun onBindVH(holder : BaseAdapterViewHolder, position : Int) {
+        ImageLoader.loadImage(holder.binding.root as ImageView,getItem(position))
+        holder.binding.root.click {
+            if (onItemClickIsInitialized()){
+                onItemClick.invoke(it,position,getItem(position))
+            }
+        }
+    }
+}

app/src/main/java/com/xkl/cdl/data/bean/CompositionTaskBean.java

-package com.xkl.cdl.data.bean;
-
-import java.io.Serializable;
-
-/**
- * author suliang
- * create 2021/4/6 18:25
- * Describe:  作文课外练习实体
- */
-public class CompositionTaskBean  {
-    private long taskId;                 //数据id
-    private int stage;          //阶段
-    private int type;         //类型
-    private String title;         //标题
-    private String introduce;       //介绍
-    private String photo;       //图片
-
-    public long getTaskId() {
-        return taskId;
-    }
-
-    public void setTaskId(long taskId) {
-        this.taskId = taskId;
-    }
-
-    public int getStage() {
-        return stage;
-    }
-
-    public void setStage(int stage) {
-        this.stage = stage;
-    }
-
-    public int getType() {
-        return type;
-    }
-
-    public void setType(int type) {
-        this.type = type;
-    }
-
-    public String getTitle() {
-        return title;
-    }
-
-    public void setTitle(String title) {
-        this.title = title;
-    }
-
-    public String getIntroduce() {
-        return introduce;
-    }
-
-    public void setIntroduce(String introduce) {
-        this.introduce = introduce;
-    }
-
-    public String getPhoto() {
-        return photo;
-    }
-
-    public void setPhoto(String photo) {
-        this.photo = photo;
-    }
-}

app/src/main/java/com/xkl/cdl/data/bean/CompositionTaskBean.kt

+package com.xkl.cdl.data.bean
+
+/**
+ * author suliang
+ * create 2021/4/6 18:25
+ * Describe:  作文课外练习实体
+ */
+data class CompositionTaskBean(val taskId : Long, //数据id
+                               val stage : Long, //阶段
+                               val type : Long, //类型
+                               val title : String, //标题
+                               var introduce : String?,  //介绍
+                               var photo : String?,
+                               val position : Int)

app/src/main/java/com/xkl/cdl/data/manager/CourseManager.kt

 package com.xkl.cdl.data.manager
 
 import appApi.AppApi
+import com.suliang.common.util.AppGlobals
 import com.suliang.common.util.file.FileUtil
 import com.xkl.cdl.data.AppConstants
 import com.xkl.cdl.data.bean.course.CoursePack
 import com.xkl.cdl.data.bean.course.ExamBean
 import com.xkl.cdl.data.bean.course.Lesson
-import java.io.File
+import java.io.*
 import java.math.BigDecimal
 import java.math.RoundingMode
 import java.text.DecimalFormat
+import java.util.zip.ZipFile
+import java.util.zip.ZipInputStream
 
 /**
  * author suliang
     
     /***
      * 检查课程包下课程的db数据文件是否存在，不存在，则复制过去
+     * 作文是.zip结尾的文件，需要解压，将文件放入对应的目录
      */
     fun checkCourseDb() {
         subjectWithCoursePackMap.forEach { entry ->
             entry.value.forEach { coursePack ->
                 coursePack.childrenCourses.forEach {
-                    val file = File(FileUtil.getSaveDirPath("db"),
-                                    "${entry.key}/${coursePack.coursePackId}/${it.courseId}/course.db")
-                    //不存在，复制，存在则不操作
-                    if (!file.exists()) {
-                        FileUtil.copyAsset(it.dbPathName, file)
+                    
+                    //如果是作文，作文需要检查数据库，同时需要检查其下的图片、视频和关键帧
+                    if (it.subjectId == AppConstants.SUBJECT_CHINESE && it.coursePackType == AppConstants.COURSEPACK_TYPE_CHINESE_COMPOSITION){
+                        val assetFileName = it.dbPathName.substringBeforeLast(".") + ".zip"
+                        val inputStream = AppGlobals.application.resources.assets.open(assetFileName)
+                        
+                        
+                        val zipInputStream = ZipInputStream(inputStream)
+                        var count =  0
+                        val buffer = ByteArray(5120)
+                        var nextEntry = zipInputStream.nextEntry
+                        while (nextEntry != null){
+                           when{
+                                nextEntry.name.endsWith(".mp4.png") -> File(FilePathManager.getMp4PngRootPath(),"${entry.key}/${coursePack.coursePackId}/${it.courseId}/${nextEntry.name.substringAfterLast("/")}")
+                                nextEntry.name.endsWith(".mp4") -> File(FilePathManager.getMp4RootPath(),"${entry.key}/${coursePack.coursePackId}/${it.courseId}/${nextEntry.name.substringAfterLast("/")}")
+                                nextEntry.name.endsWith(".png") -> File(FilePathManager.getPngRootPath(),"${entry.key}/${coursePack.coursePackId}/${it.courseId}/${nextEntry.name.substringAfterLast("/")}")
+                                nextEntry.name.endsWith(".db") -> File(FilePathManager.getDbRootPath(),"${entry.key}/${coursePack.coursePackId}/${it.courseId}/course.db")
+                                else -> null
+                            }?.let { file ->
+                                    //文件不存在 ,复制当前文件进入该文件
+                                if (!file.exists()){
+                                    file.parentFile?.let { parentFile ->
+                                        if (!parentFile.exists()) parentFile.mkdirs()
+                                    }
+                                    val outputStream = BufferedOutputStream(FileOutputStream(file))
+                                    while ((zipInputStream.read(buffer).also { count = it }) != -1 ){
+                                        outputStream.write(buffer,0,count)
+                                    }
+                                    outputStream.close()
+                                }
+                            }
+                            nextEntry = zipInputStream.nextEntry
+                        }
+                        
+                    }else{      //其他的项目只需要复制和检查数据库
+                        val file = File(FilePathManager.getDbRootPath(), "${entry.key}/${coursePack.coursePackId}/${it.courseId}/course.db")
+                        //不存在，复制，存在则不操作
+                        if (!file.exists()) {
+                            FileUtil.copyAsset(it.dbPathName, file)
+                        }
                     }
                 }
             }

app/src/main/java/com/xkl/cdl/data/manager/FilePathManager.kt

          */
         @JvmStatic
         fun getCoursePackDbPath(): File{
-            return File(FileUtil.getSaveDirPath("db"), "course-pack.db")
+            return File(getDbRootPath(), "course-pack.db")
         }
         /** 获取课程数据地址 */
         @JvmStatic
         fun getCourseDbPath(base:DbControlBase): File{
-            return File(FileUtil.getSaveDirPath("db"), "${base.subjectId}/${base.coursePackId}/${base.courseId}/course.db")
+            return File(getDbRootPath(), "${base.subjectId}/${base.coursePackId}/${base.courseId}/course.db")
         }
         /** 获取课程数据地址 */
         @JvmStatic
         fun getCourseDbPath(subjectId:Int,coursePackId:Long,courseId:Long): File{
-            return File(FileUtil.getSaveDirPath("db"), "subjectId/coursePackId/courseId/course.db")
+            return File(getDbRootPath(), "subjectId/coursePackId/courseId/course.db")
+        }
+        
+        /** db文件保存的文件夹 */
+        fun getDbRootPath(): String{
+            return FileUtil.getSaveDirPath("db")
+        }
+        /**作文mp4.png保存的文件夹*/
+        fun getMp4PngRootPath():String{
+            return FileUtil.getSaveDirPath("mp4png")
+        }
+        /**作文课外练习png保存的文件夹*/
+        fun getPngRootPath():String{
+            return FileUtil.getSaveDirPath("png")
+        }
+        /**作文课外练习png保存的文件*/
+        fun getPngFile(subjectId : Int,coursePackId : Long,courseId : Long, pngName:String):File{
+            return File(getPngRootPath(),"$subjectId/$coursePackId/$courseId/$pngName")
+        }
+        
+        /**作文视频MP4保存的文件夹*/
+        fun getMp4RootPath():String{
+            return FileUtil.getSaveDirPath("mp4")
         }
 
     }

app/src/main/java/com/xkl/cdl/data/manager/db/DBCourseManager.kt

                 val p = when (base.courseType) {
                     AppConstants.COURSE_TYPE_CHINESE_COMPOSITION -> COMPOSITION
                     AppConstants.COURSE_TYPE_ENGLISH_SPOKEN -> SPOKEN
-                    AppConstants.COURSE_TYPE_CHINESE_LITERACY,AppConstants.COURSE_TYPE_CHINESE_PINYIN -> LITERACY_PINYING
+                    AppConstants.COURSE_TYPE_CHINESE_LITERACY, AppConstants.COURSE_TYPE_CHINESE_PINYIN -> LITERACY_PINYING
                     else -> NORMAL
                 }
-                mDataBase = SQLiteDatabase.openDatabase(FilePathManager.getCourseDbPath(currentBase).path,
-                                                        p,
-                                                        null,
+                mDataBase = SQLiteDatabase.openDatabase(FilePathManager.getCourseDbPath(currentBase).path, p, null,
                                                         SQLiteDatabase.OPEN_READONLY)
             }
             if (mDataBase == null) {
                 val lessonId = it.getLong(it.getColumnIndex("lesson_id"))
                 val lessonName : String = when (base.courseType) {
                     AppConstants.COURSE_TYPE_CHINESE_COMPOSITION, AppConstants.COURSE_TYPE_CHINESE_LITERACY, AppConstants.COURSE_TYPE_CHINESE_PINYIN -> it.getString(
-                        it.getColumnIndex("lesson_title"))
+                            it.getColumnIndex("lesson_title"))
                     else -> it.getString(it.getColumnIndex("lesson"))
                 }
                 val wordIds : MutableList<Long> = when (base.courseType) {
                 // 注：针对口语对话课时，如果没有学习完，是不会设置进度点的。 todo 分课程类型设置进度点
                 val learnIsOver = wordIds.size - 1 == learnIndex
                 
-                val lesson = Lesson(base.subjectId,
-                                    base.coursePackId,
-                                    base.coursePackType,
-                                    base.courseId,
-                                    base.courseType,
-                                    chapterId,
-                                    chapterName,
-                                    lessonId,
-                                    lessonName).apply {
+                val lesson = Lesson(base.subjectId, base.coursePackId, base.coursePackType, base.courseId, base.courseType,
+                                    chapterId, chapterName, lessonId, lessonName).apply {
                     lessonPositionInList = positionIndex
                     this.wordIds = wordIds  //内容
                     totalNumber = this.wordIds.size     //总数
                 mutableList.add(lesson)
                 positionIndex += 1
                 // TODO: 2022/5/9 对课时数量进行限制，课时太多，开发人员不好进行测试
-                val needBreak = when(base.coursePackType){
+                val needBreak = when (base.coursePackType) {
                     AppConstants.COURSEPACK_TYPE_CHINESE_COMPOSITION -> positionIndex == 11     //保留十个课时
                     AppConstants.COURSEPACK_TYPE_ENGLISH_SPOKEN -> positionIndex == 7  //保留六个课时
                     else -> positionIndex == 3      //保留三个课时
                 }
-                if (needBreak){
+                if (needBreak) {
                     break
                 }
             }
         }
         val sql = when (base.courseType) {
             //作文知识点测试
-            AppConstants.COURSE_TYPE_CHINESE_COMPOSITION -> "SELECT * FROM exam WHERE chapter_id = ${lesson!!.chapterId} AND exam_id in (${Joiner.on(",").join(lesson.wordIds)}) ORDER BY random()"
+            AppConstants.COURSE_TYPE_CHINESE_COMPOSITION -> "SELECT * FROM exam WHERE chapter_id = ${lesson!!.chapterId} AND exam_id in (${
+                Joiner.on(",").join(lesson.wordIds)
+            }) ORDER BY random()"
             
             AppConstants.COURSE_TYPE_ENGLISH_DISCERN, AppConstants.COURSE_TYPE_ENGLISH_VOICE,
             AppConstants.COURSE_TYPE_ENGLISH_SOUNDMARK, AppConstants.COURSE_TYPE_CHINESE_LITERACY,
         mDataBase?.rawQuery(sql, null)?.run {
             when (base.courseType) {
                 //作文知识点测试
-                AppConstants.COURSE_TYPE_CHINESE_COMPOSITION ->  while (moveToNext()) {
+                AppConstants.COURSE_TYPE_CHINESE_COMPOSITION -> while (moveToNext()) {
                     result.add(ExamBean().apply {
                         id = getLong(3)
                         word_id = getLong(2)
                     })
                 }
                 
-                AppConstants.COURSE_TYPE_ENGLISH_DISCERN, AppConstants.COURSE_TYPE_ENGLISH_VOICE,
-                AppConstants.COURSE_TYPE_CHINESE_LITERACY,
-                AppConstants.COURSE_TYPE_CHINESE_PINYIN    -> while (moveToNext()) {
-                        result.add(ExamBean().apply {
-                            id = getLong(0)
-                            word_id = getLong(1)
-                            word = getString(2)
-                            correct = getString(3)
-                            error1 = getString(4)
-                            error2 = getString(5)
-                            error3 = getString(6)
-                            type = AppConstants.TEST_QUEST_TYPE_CHOICE        // 为1
-                            chapterId = getLong(8)
-                            lessonId = getLong(9)
-                        })
-                    }
-                AppConstants.COURSE_TYPE_ENGLISH_SOUNDMARK ->  while (moveToNext()) {
+                AppConstants.COURSE_TYPE_ENGLISH_DISCERN, AppConstants.COURSE_TYPE_ENGLISH_VOICE, AppConstants.COURSE_TYPE_CHINESE_LITERACY, AppConstants.COURSE_TYPE_CHINESE_PINYIN -> while (moveToNext()) {
+                    result.add(ExamBean().apply {
+                        id = getLong(0)
+                        word_id = getLong(1)
+                        word = getString(2)
+                        correct = getString(3)
+                        error1 = getString(4)
+                        error2 = getString(5)
+                        error3 = getString(6)
+                        type = AppConstants.TEST_QUEST_TYPE_CHOICE        // 为1
+                        chapterId = getLong(8)
+                        lessonId = getLong(9)
+                    })
+                }
+                AppConstants.COURSE_TYPE_ENGLISH_SOUNDMARK -> while (moveToNext()) {
                     result.add(ExamBean().apply {
                         id = getLong(0)
                         word_id = getLong(1)
                 //不为空，写入本身，如果为空，用另外的发音方式写入
                 val parentPath = FileUtil.getSaveDirPath(AppConfig.VOICE)
                 val audio_us_file_path = audio_us?.let {
-                    val audioFileNameUS =
-                        "${base.subjectId}_${base.coursePackId}_${base.courseId}_${wordId}_${AppConstants.SOUND_TYPE_US}"
+                    val audioFileNameUS = "${base.subjectId}_${base.coursePackId}_${base.courseId}_${wordId}_${AppConstants.SOUND_TYPE_US}"
                     val file = File(parentPath, audioFileNameUS)
                     FileUtil.writeBytesToFile(file, it)
                     file.path
                 } ?: audio_uk?.let {
-                    val audioFileNameUS =
-                        "${base.subjectId}_${base.coursePackId}_${base.courseId}_${wordId}_${AppConstants.SOUND_TYPE_US}"
+                    val audioFileNameUS = "${base.subjectId}_${base.coursePackId}_${base.courseId}_${wordId}_${AppConstants.SOUND_TYPE_US}"
                     val file = File(parentPath, audioFileNameUS)
                     FileUtil.writeBytesToFile(file, it)
                     file.path
                 }
                 //不为空，写入本身，如果为空，用另外的发音方式写入
                 val audio_uk_file_path = audio_uk?.let {
-                    val audioFileNameUk =
-                        "${base.subjectId}_${base.coursePackId}_${base.courseId}_${wordId}_${AppConstants.SOUND_TYPE_UK}"
+                    val audioFileNameUk = "${base.subjectId}_${base.coursePackId}_${base.courseId}_${wordId}_${AppConstants.SOUND_TYPE_UK}"
                     val file = File(parentPath, audioFileNameUk)
                     FileUtil.writeBytesToFile(file, it)
                     file.path
                 } ?: audio_us?.let {
-                    val audioFileNameUk =
-                        "${base.subjectId}_${base.coursePackId}_${base.courseId}_${wordId}_${AppConstants.SOUND_TYPE_UK}"
+                    val audioFileNameUk = "${base.subjectId}_${base.coursePackId}_${base.courseId}_${wordId}_${AppConstants.SOUND_TYPE_UK}"
                     val file = File(parentPath, audioFileNameUk)
                     FileUtil.writeBytesToFile(file, it)
                     file.path
                     while (it.moveToNext()) {
                         //写入文件
                         audio_cn_file_path = it.getBlobOrNull(0)?.let {
-                            val audioFileNameCN =
-                                "${base.subjectId}_${base.coursePackId}_${base.courseId}_${wordId}_${AppConstants.SOUND_TYPE_CN}"
+                            val audioFileNameCN = "${base.subjectId}_${base.coursePackId}_${base.courseId}_${wordId}_${AppConstants.SOUND_TYPE_CN}"
                             val file = File(FileUtil.getSaveDirPath(AppConfig.VOICE), audioFileNameCN)
                             FileUtil.writeBytesToFile(file, it)
                             file.path
         open(dbcb)
         //从lesson已学位置开始获取数据
         val needLearnIds = lesson.wordIds.subList(lesson.learnedIndex + 1, lesson.wordIds.size)
-        val sql =
-            "SELECT * FROM chapter WHERE chapter_id = ${lesson.chapterId} and lesson_id = ${lesson.lessonId} AND word_id in (${
-                Joiner.on(",").join(needLearnIds)
-            }) " + "ORDER by word_sort ASC"
+        val sql = "SELECT * FROM chapter WHERE chapter_id = ${lesson.chapterId} and lesson_id = ${lesson.lessonId} AND word_id in (${
+            Joiner.on(",").join(needLearnIds)
+        }) " + "ORDER by word_sort ASC"
         mDataBase?.rawQuery(sql, null)?.run {
             while (moveToNext()) {
                 //单词id
                 val word_id = getLong(getColumnIndex("word_id"))
                 //学习单词实体
-                result.add(LearnWord(dbcb.subjectId,
-                                     dbcb.coursePackId,
-                                     dbcb.courseId,
-                                     dbcb.coursePackType,
-                                     dbcb.courseType,
-                                     lesson.chapterId,
-                                     lesson.lessonId,
-                                     word_id,
-                                     true,
-                                     lesson.lessonType).apply {
+                result.add(LearnWord(dbcb.subjectId, dbcb.coursePackId, dbcb.courseId, dbcb.coursePackType, dbcb.courseType,
+                                     lesson.chapterId, lesson.lessonId, word_id, true, lesson.lessonType).apply {
                     word = getString(getColumnIndex("word"))
                     basic_explanation = getString(getColumnIndex("basic_explaination"))
                     extend_explanation = getString(getColumnIndex("all_explaination"))
                 else -> wordIds.append(value).append(",")
             }
         }
-        val sql =
-            "SELECT * FROM knowledge WHERE chapter_id = ${lesson.chapterId}  AND knowledge_id in ($wordIds) ORDER by CASE $sortSqlBuilder END"
+        val sql = "SELECT * FROM knowledge WHERE chapter_id = ${lesson.chapterId}  AND knowledge_id in ($wordIds) ORDER by CASE $sortSqlBuilder END"
         
         mDataBase?.rawQuery(sql, null)?.run {
             while (moveToNext()) {
                 //学习单词实体
-                result.add(LearnWord(dbcb.subjectId,
-                                     dbcb.coursePackId,
-                                     dbcb.courseId,
-                                     dbcb.coursePackType,
-                                     dbcb.courseType,
-                                     lesson.chapterId,
-                                     lesson.lessonId,
-                                     getLong(getColumnIndex("knowledge_id")),
-                                     true,
+                result.add(LearnWord(dbcb.subjectId, dbcb.coursePackId, dbcb.courseId, dbcb.coursePackType, dbcb.courseType,
+                                     lesson.chapterId, lesson.lessonId, getLong(getColumnIndex("knowledge_id")), true,
                                      lesson.lessonType).apply {
                     word = getString(getColumnIndex("title"))
                     basic_explanation = getString(getColumnIndex("explaination"))
      * @return List<LearnWord>
      */
     @SuppressLint("Range")
-    fun queryLearnWord(dbcb : DbControlBase, chapterId:Long, lessonId:Long, wordIds:String, isNeedOriginSort:Boolean = false):List<LearnWord>{
+    fun queryLearnWord(dbcb : DbControlBase,
+                       chapterId : Long,
+                       lessonId : Long,
+                       wordIds : String,
+                       isNeedOriginSort : Boolean = false) : List<LearnWord> {
         val result = mutableListOf<LearnWord>()
         open(dbcb)
-        val sql = when{
+        val sql = when {
             !isNeedOriginSort -> "SELECT * FROM chapter WHERE chapter_id = $chapterId and lesson_id = $lessonId AND word_id in ($wordIds) ORDER by word_sort ASC"
             else -> {
                 val sortSqlBuilder = StringBuilder()        //排序value
         mDataBase?.rawQuery(sql, null)?.run {
             while (moveToNext()) {
                 //学习单词实体
-                result.add(LearnWord(dbcb.subjectId,
-                                     dbcb.coursePackId,
-                                     dbcb.courseId,
-                                     dbcb.coursePackType,
-                                     dbcb.courseType,
-                                     chapterId,
-                                     lessonId,
-                                     getLong(getColumnIndex("word_id")),
-                                     true,
+                result.add(LearnWord(dbcb.subjectId, dbcb.coursePackId, dbcb.courseId, dbcb.coursePackType, dbcb.courseType,
+                                     chapterId, lessonId, getLong(getColumnIndex("word_id")), true,
                                      AppConstants.LESSON_TYPE_WORD).apply {
                     word = getString(getColumnIndex("word"))
                     basic_explanation = getString(getColumnIndex("basic_explaination"))
                     phrase = getString(getColumnIndex("phrase"))
                     example = getString(getColumnIndex("example"))
                     reference = getString(getColumnIndex("reference"))
-                
+                    
                     when (dbcb.courseType) {
                         AppConstants.COURSE_TYPE_CHINESE_LITERACY -> {
                             literacyIspolyphone = getInt(getColumnIndex("polyphone")) > 0
     fun queryCompositionReading(dbcb : DbControlBase, entity : Lesson) : List<CompositionReadingBean> {
         
         val result = mutableListOf<CompositionReadingBean>()
-        val sql = "SELECT * FROM reading WHERE reading_id in (${Joiner.on(",").join(entity.wordIds)}) AND chapter_id = 5272 ORDER by CASE " + entity.wordIds.let {
+        val sql = "SELECT * FROM reading WHERE reading_id in (${
+            Joiner.on(",")
+                    .join(entity.wordIds)
+        }) AND chapter_id = ${entity.chapterId} ORDER by CASE " + entity.wordIds.let {
             val sortedCase = StringBuilder()
-            it.forEachIndexed{ index,id ->
+            it.forEachIndexed { index, id ->
                 sortedCase.append(" WHEN reading_id = $id THEN $index")
             }
             sortedCase
         } + " END"
         open(dbcb)
-        mDataBase?.rawQuery(sql,null)?.run {
-            while (moveToNext()){
-                result.add(CompositionReadingBean(
-                        getLong(2),
-                        getString(3),
-                        getString(4),
-                        getString(7),
-                        getString(6)).apply {
-                            collectId = 0
+        mDataBase?.rawQuery(sql, null)?.run {
+            while (moveToNext()) {
+                result.add(CompositionReadingBean(getLong(2), getString(3), getString(4), getString(7), getString(6)).apply {
+                    collectId = 0
                 })
             }
             close()
      * @param entity Lesson
      * @return List<CompositionTaskBean>
      */
-    fun queryCompositonTask(dbcb : DbControlBase,entity : Lesson) : List<CompositionTaskBean>{
+    fun queryCompositionTask(dbcb : DbControlBase, entity : Lesson) : List<CompositionTaskBean> {
         val result = mutableListOf<CompositionTaskBean>()
-        
-        
+        val sql = "SELECT * FROM task WHERE task_id in (${
+            Joiner.on(",")
+                    .join(entity.wordIds)
+        }) AND chapter_id = ${entity.chapterId} ORDER by CASE " + entity.wordIds.let {
+            val sortedCase = StringBuilder()
+            it.forEachIndexed { index, id ->
+                sortedCase.append(" WHEN task_id = $id THEN $index")
+            }
+            sortedCase
+        } + " END"
+        open(dbcb)
+        mDataBase?.rawQuery(sql, null)?.run {
+            var position = 0
+            while (moveToNext()) {
+                result.add(CompositionTaskBean(getLong(2),
+                                               getLong(4),
+                                               getLong(3),
+                                               getString(6),
+                                               getString(7),
+                                               getString(8),
+                                               position))
+                position++
+                result.add(CompositionTaskBean(getLong(2),
+                                               getLong(4),
+                                               getLong(3),
+                                               getString(6),
+                                               getString(7),
+                                               getString(8),
+                                               position))
+                position++
+            }
+            close()
+        }
         return result
     }
     

app/src/main/java/com/xkl/cdl/data/repository/DataRepository.kt

 package com.xkl.cdl.data.repository
 
-import androidx.lifecycle.MutableLiveData
 import com.suliang.common.util.file.FileUtil
 import com.xkl.cdl.data.bean.course.CourseDetail
 import com.xkl.cdl.data.bean.course.Lesson

app/src/main/java/com/xkl/cdl/module/learn/LearnCTaskActivity.kt

 package com.xkl.cdl.module.learn
 
+import android.media.Image
 import android.os.Bundle
+import android.text.TextUtils
+import android.widget.ImageView
+import androidx.databinding.DataBindingUtil
 import androidx.lifecycle.ViewModelProvider
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.StaggeredGridLayoutManager
+import com.google.android.material.bottomsheet.BottomSheetDialog
+import com.lxj.xpopup.XPopup
+import com.lxj.xpopup.core.ImageViewerPopupView
+import com.lxj.xpopup.interfaces.OnSrcViewUpdateListener
+import com.lxj.xpopup.util.SmartGlideImageLoader
 import com.suliang.common.base.activity.BaseActivityVM
+import com.suliang.common.extension.click
+import com.xkl.cdl.R
+import com.xkl.cdl.adapter.AdapterBottomDialogSwitch
+import com.xkl.cdl.adapter.AdapterImageTask
+import com.xkl.cdl.data.bean.CompositionReadingBean
+import com.xkl.cdl.data.bean.CompositionTaskBean
+import com.xkl.cdl.data.manager.FilePathManager
 import com.xkl.cdl.databinding.ActivityLearnCtaskBinding
+import com.xkl.cdl.databinding.DialogBottomAutoPlaySelectBinding
 
 /**
 * author suliang
     }
     
     override fun initActivity(savedInstanceState : Bundle?) {
-    
+        binding.titleBar.textViewTitle.run { 
+            ellipsize = TextUtils.TruncateAt.MIDDLE
+            text = vm.lesson.lessonName
+        }
+        binding.titleBar.onBackClick = {  
+            finish()
+        }
+        binding.titleBar.onRightClick = {
+            showChangeTaskDialog()
+        }
+        //初始化图片显示recyclerView
+        binding.recyclerView.apply { 
+            layoutManager = StaggeredGridLayoutManager(3,StaggeredGridLayoutManager.VERTICAL)
+            adapter = AdapterImageTask(vm).apply { 
+                onItemClick = { v, position, item ->
+                    XPopup.Builder(this@LearnCTaskActivity)
+                            .asImageViewer(v as ImageView, position,
+                                           (binding.recyclerView.adapter as AdapterImageTask).getData() as List<*>, object : OnSrcViewUpdateListener{
+                                override fun onSrcViewUpdate(popupView : ImageViewerPopupView, position : Int) {
+                                    popupView.updateSrcView(binding.recyclerView.getChildAt(position) as ImageView)
+                                }
+                            }, SmartGlideImageLoader())
+                            .show()
+                }
+            }
+        }
+        
     }
     
     override fun loadData() {
+        vm.queryData()
+        //当前练习
+        vm.currentTask.observe(this){
+            binding.run { 
+                topicValue.text = it.title
+                requireValue.text = it.introduce
+                sourceValue.text = "学考乐"
+            }
+            it.photo?.run { 
+                val fileList = split(",").map {
+                    FilePathManager.getPngFile(vm.lesson.subjectId,vm.lesson.coursePackId,vm.lesson.courseId,it.substringAfterLast ("/"))
+                }.toMutableList()
+                (binding.recyclerView.adapter as AdapterImageTask).setData(fileList)   
+            }
+        }
+    }
+    
+    private var changeTaskDialog: BottomSheetDialog? = null
     
+    /** 切换item的dialog */
+    private fun showChangeTaskDialog() {
+        if (!vm.isCanSwitch) return
+        
+        if (changeTaskDialog == null) {
+            changeTaskDialog = BottomSheetDialog(this, R.style.dialog_style).apply {
+                val autoPlayBinding = DataBindingUtil.inflate<DialogBottomAutoPlaySelectBinding>(layoutInflater,
+                                                                                                 R.layout.dialog_bottom_auto_play_select,
+                                                                                                 null, false)
+                setContentView(autoPlayBinding.root)
+                autoPlayBinding.tvTitle.text = "请选择课外练习查看详情"
+                autoPlayBinding.ivCancel.click { v -> dismiss() }
+                autoPlayBinding.rvRepeat.run {
+                    layoutManager = LinearLayoutManager(this@LearnCTaskActivity, LinearLayoutManager.VERTICAL, false)
+                    adapter = AdapterBottomDialogSwitch<CompositionTaskBean>().apply {
+                        onItemClick = { _, position, _ ->
+                            dismiss()
+                            vm.currentTask.value = vm.mTaskList[position]
+                        }
+                        setData(vm.mTaskList.toMutableList())
+                    }
+                }
+                //显示时，定位到当前item的位置
+                setOnShowListener{
+                    (autoPlayBinding.rvRepeat.adapter as AdapterBottomDialogSwitch<*>).selectItemIndex = vm.currentTask.value!!.position
+                    autoPlayBinding.rvRepeat.scrollToPosition( vm.currentTask.value!!.position)
+                }
+            }
+        }
+        changeTaskDialog?.show()
     }
     
 

app/src/main/java/com/xkl/cdl/module/learn/LearnCTaskViewModel.kt

 package com.xkl.cdl.module.learn
 
+import androidx.lifecycle.MutableLiveData
+import com.suliang.common.base.activity.ToastEvent
 import com.suliang.common.base.viewmodel.BaseViewModel
+import com.suliang.common.extension.diskIo2Main
 import com.xkl.cdl.data.DataTransferHolder
+import com.xkl.cdl.data.bean.CompositionTaskBean
 import com.xkl.cdl.data.bean.course.Lesson
+import com.xkl.cdl.data.manager.db.DBCourseManager
+import com.xkl.cdl.data.manager.db.DbControlBase
+import io.reactivex.rxjava3.core.Observable
 
 class LearnCTaskViewModel : BaseViewModel() {
     
     val lesson = DataTransferHolder.instance.getData<Lesson>()
+    val dbControlBase = DbControlBase(lesson.subjectId, lesson.coursePackId, lesson.coursePackType, lesson.courseId,
+                                      lesson.courseType)
     
-    fun queryData(){
+    //是否有切换的练习
+    var isCanSwitch = false
     
+    //数据列表
+    lateinit var mTaskList : List<CompositionTaskBean>
+    
+    //当前显示task
+    val currentTask = MutableLiveData<CompositionTaskBean>()
+    
+    /**
+     * 查询数据
+     */
+    fun queryData() {
+        Observable.create<List<CompositionTaskBean>> {
+            it.onNext(DBCourseManager.queryCompositionTask(dbControlBase, lesson))
+            it.onComplete()
+        }.compose(diskIo2Main()).subscribe({
+                                               isCanSwitch = it.size > 1
+                                               mTaskList = it
+                                               currentTask.value = mTaskList[0]
+                                           }, {
+                                               it.printStackTrace()
+                                               showToast(ToastEvent(content = "课外练习数据获取异常，请联系管理人员进行处理"))
+                                           })
     }
     
 }

app/src/main/res/layout/item_task_image.xml

+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <data>
+
+    </data>
+
+    <com.google.android.material.imageview.ShapeableImageView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:scaleType="fitXY"
+        app:shapeAppearance="@style/roundedCornerStyle" />
+</layout>

build.gradle

             grpc_protobuf: "io.grpc:grpc-protobuf:1.27.0",
             grpc_stub: "io.grpc:grpc-stub:1.27.0",
             //liveEventBus  https://github.com/JeremyLiao/LiveEventBus
-            liveEventBus : "io.github.jeremyliao:live-event-bus-x:1.8.0"
+            liveEventBus : "io.github.jeremyliao:live-event-bus-x:1.8.0",
+            //BigImageViewPager
+//            BigImageViewPager : "com.github.SherlockGougou:BigImageViewPager:androidx-7.0.0",
+            //XPopup  https://github.com/li-xiaojun/XPopup
+            XPopup : "com.github.li-xiaojun:XPopup:2.8.0"
     ]
 
 

lib/common/src/main/java/com/suliang/common/util/image/MyGlideApp.kt

 import com.bumptech.glide.module.LibraryGlideModule
 import com.bumptech.glide.request.RequestOptions
 import com.suliang.common.util.file.FileUtil
+import com.bumptech.glide.load.model.GlideUrl
+import java.io.InputStream
+
 
 /**
  * author suliang
 //            setDefaultRequestOptions(apply)
         }
     }
+    
+    override fun registerComponents(context : Context, glide : Glide, registry : Registry) {
+        super.registerComponents(context, glide, registry)
+        // 替换底层网络框架为okhttp3，这步很重要！如果不添加会无法正常显示原图的加载百分比，或者卡在1%
+        // 如果你的app中已经存在了自定义的GlideModule，你只需要把这一行代码，添加到对应的重载方法中即可。
+//        registry.replace(GlideUrl::class.java, InputStream::class.java, Factory(ProgressManager.getOkHttpClient()))
+    }
 
 }