diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 7214c31..922d70a 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -39,7 +39,7 @@
         <activity android:name=".PhilosophyActivity"/>
 <!--        <activity android:name=".BookShelfActivity"/>-->
         <activity android:name=".ScienceActivity"/>
-        <activity android:name=".author_introductionActivity"/>
+        <activity android:name=".Author_introductionActivity"/>
         <!--        <activity android:name=".MainActivity"-->
 <!--            android:exported="true"-->
 <!--            android:label="@string/app_name"-->
@@ -52,8 +52,7 @@
 <!--        </activity>-->
         <activity android:name=".BookIntroActivity"/>
          <activity android:name=".MainActivity"
-             android:configChanges="orientation|keyboard|keyboardHidden|navigation"
-             android:windowSoftInputMode="adjustPan|stateVisible"/>
+             android:configChanges="orientation|keyboard|keyboardHidden|navigation" />
         <activity android:name=".RegisterActivity" />
         <activity android:name=".BookShelfActivity"/>
         <activity android:name=".Activity.Perception_informationActivity"/>
@@ -74,7 +73,6 @@
             android:label="Jianshu">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
diff --git a/app/src/main/java/com/zjgsu/jianshu/Activity/Author_introductionActivity.kt b/app/src/main/java/com/zjgsu/jianshu/Activity/Author_introductionActivity.kt
new file mode 100644
index 0000000..9d2536f
--- /dev/null
+++ b/app/src/main/java/com/zjgsu/jianshu/Activity/Author_introductionActivity.kt
@@ -0,0 +1,87 @@
+package com.zjgsu.jianshu
+
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import android.util.Log
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.content.ContextCompat
+import androidx.recyclerview.widget.StaggeredGridLayoutManager
+import cn.bmob.v3.Bmob
+import cn.bmob.v3.BmobQuery
+import cn.bmob.v3.exception.BmobException
+import cn.bmob.v3.listener.FindListener
+import com.bumptech.glide.Glide
+import com.zjgsu.jianshu.Bmob.Author_bmob
+import com.zjgsu.jianshu.Bmob.Book_info_bmob
+import kotlinx.android.synthetic.main.activity_anthor_introduction.*
+import kotlinx.android.synthetic.main.activity_book_info.*
+
+class Author_introductionActivity : AppCompatActivity() {
+    private var authorworkList = ArrayList<AuthorWork>()
+    private lateinit var userId:String
+    private lateinit var adapter: Book_authorAdapter
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_anthor_introduction)
+        Bmob.initialize(this, "8f9f1d1ea520b0ce4f84a6fa83a5f754")//连接bmob
+        userId = getSharedPreferences("userinf", Context.MODE_PRIVATE).getString("user_id", "").toString()
+        adapter = Book_authorAdapter(authorworkList,userId)
+        val layoutManager =
+            StaggeredGridLayoutManager(1, StaggeredGridLayoutManager.HORIZONTAL)//第一个参数是列数
+        authorwork_recyclerView.layoutManager = layoutManager
+        authorwork_recyclerView.adapter = adapter
+        inits()
+        author_back.setOnClickListener {
+            val bookName=intent.getStringExtra("book_name")
+            val intent = Intent(this, BookInformationActivity::class.java)
+            intent.putExtra("Book_name", bookName)
+            startActivity(intent)
+            finish()
+        }
+    }
+    private fun inits() {
+        val author_name=intent.getStringExtra("author_name")
+        book_authorname1.text = author_name
+        val authorQuery = BmobQuery<Author_bmob>()
+        authorQuery.addWhereEqualTo("author_name",author_name)
+        authorQuery.findObjects(object : FindListener<Author_bmob>() {
+            override fun done(list: List<Author_bmob>, e: BmobException?) {
+                if (e == null) {
+                    val author=list[0]
+                    author_intro.text=author.author_introduce
+                    loadAuthorPic(author.picture.url)
+                    val authorworkQuery=BmobQuery<Book_info_bmob>()
+                    authorworkQuery.addWhereEqualTo("authorid",author.objectId)
+                    authorworkQuery.findObjects(object :FindListener<Book_info_bmob>(){
+                        override fun done(books:List<Book_info_bmob>,e:BmobException?){
+                            if(e==null){
+                                authorworkList.clear()
+                                books?.let {
+                                    authorworkList.addAll(it.map { b ->
+                                        // 使用安全调用和Elvis操作符提供默认值或进行错误处理
+                                        val url = b.picture?.url ?: "default_url_or_handling_case"
+                                        AuthorWork(b.name,author_name.toString(), url)
+                                    })
+                                }
+                                adapter.notifyDataSetChanged()
+                            }
+                            else{
+                            }
+                        }
+                    })
+                } else {
+                    Log.d("error", "error")
+                }
+//                expand_text_view.text=author_selfintro
+            }
+        })
+    }
+    private fun loadAuthorPic(coverUrl: String) {
+        Glide.with(this) // 传入 Context
+            .load(coverUrl) // 加载图片的 URL
+            .placeholder(R.drawable.pre_load) // 设置占位图
+            .error(R.drawable.fail_load) // 设置加载失败时显示的图片
+            .into(author_img) // 将图片加载到指定的 ImageView 中
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/zjgsu/jianshu/Activity/BookInformationActivity.kt b/app/src/main/java/com/zjgsu/jianshu/Activity/BookInformationActivity.kt
index 37ddf9b..aca380e 100644
--- a/app/src/main/java/com/zjgsu/jianshu/Activity/BookInformationActivity.kt
+++ b/app/src/main/java/com/zjgsu/jianshu/Activity/BookInformationActivity.kt
@@ -28,6 +28,7 @@ class BookInformationActivity : AppCompatActivity() {
     private lateinit var bookName: String
     private lateinit var authorName: String
     private lateinit var userId:String
+    private lateinit var picurl:String
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_book_info)
@@ -70,6 +71,7 @@ class BookInformationActivity : AppCompatActivity() {
                 if (e == null && books != null && books.isNotEmpty()) {
                     val book = books[0]
                     loadBookCover(book.picture.url)
+                    picurl=book.picture.url
                     if (book.buxing + book.tuijian + book.buxing != 0) {
                         var tuijian_res: Double = 0.0
                         tuijian_res = (book.tuijian) * 100.0 / (book.buxing + book.tuijian + book.yiban)
@@ -108,11 +110,12 @@ class BookInformationActivity : AppCompatActivity() {
 
     private fun setClickListeners() {
         book_authorname.setOnClickListener {
-            val intent = Intent(this, author_introductionActivity::class.java)
+            val intent = Intent(this, Author_introductionActivity::class.java)
             intent.putExtra("author_name", authorName)
+            intent.putExtra("book_name",bookName)
             startActivity(intent)
         }
-
+        //TODO:不一定回到MainActivity::class，后面还要在跳转前保存上一个页面
         bookinfo_return.setOnClickListener {
             val intent = Intent(this, MainActivity::class.java)
             startActivity(intent)
@@ -142,6 +145,7 @@ class BookInformationActivity : AppCompatActivity() {
                     val bookshelfRecord = BookShelf()
                     bookshelfRecord.setb_name(bookName)
                     bookshelfRecord.setuserid(userId)
+                    bookshelfRecord.setpicurl(picurl)
                     bookshelfRecord.save(object : SaveListener<String>() {
                         override fun done(objectId: String?, saveException: BmobException?) {
                             if (saveException == null) {
diff --git a/app/src/main/java/com/zjgsu/jianshu/Activity/BookShelfActivity.kt b/app/src/main/java/com/zjgsu/jianshu/Activity/BookShelfActivity.kt
index b1c0228..79aeab9 100644
--- a/app/src/main/java/com/zjgsu/jianshu/Activity/BookShelfActivity.kt
+++ b/app/src/main/java/com/zjgsu/jianshu/Activity/BookShelfActivity.kt
@@ -33,11 +33,13 @@ import android.widget.TextView
 import androidx.recyclerview.widget.RecyclerView
 import android.view.MotionEvent
 import android.view.View.OnTouchListener
+import android.widget.Button
+import androidx.appcompat.app.AlertDialog
+import cn.bmob.v3.listener.UpdateListener
 import kotlinx.android.synthetic.main.layout_bottom_navigation.*
 
 class BookShelfActivity : AppCompatActivity() {
-    val Booklist = ArrayList<Book_Shelf>()
-    val Booklist2 = ArrayList<Book_Shelf>()
+    val booklist = ArrayList<Book_Shelf>()
     lateinit var adapter:BookshelfAdapter
     lateinit var userId:String
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -45,95 +47,34 @@ class BookShelfActivity : AppCompatActivity() {
         setContentView(R.layout.activity_bookshelf)
         Bmob.initialize(this, "8f9f1d1ea520b0ce4f84a6fa83a5f754")//连接bmob
         userId = getSharedPreferences("userinf", Context.MODE_PRIVATE).getString("user_id", "").toString()
-        inits()
+        loadBookshelf()
         val layoutManager=GridLayoutManager(this,3)
-        recyclerView2.layoutManager=layoutManager
-        adapter=BookshelfAdapter(this,Booklist)
-        recyclerView2.adapter=adapter
-        adapter.setRecyclerViewOnItemClickListener(object : BookshelfAdapter.RecyclerViewOnItemClickListener {
-            override fun onItemClickListener(view: View?, position: Int) {
-                                Log.d("zyzh","12311")
-                adapter.setSelectItem(position)
-            }
-
-            override fun onItemLongClickListener(view: View?, position: Int): Boolean {
-                Log.d("zy11","123121")
-                adapter.setShowBox()
-                adapter.setSelectItem(position)
-                adapter.notifyDataSetChanged()
-                return true
-            }
-        })
-
-        swipeRefresh2.setOnRefreshListener {
-            refreshBookShelf(adapter)
+        bookshelf_recyclerView.layoutManager=layoutManager
+        adapter=BookshelfAdapter(this,booklist)
+        bookshelf_recyclerView.adapter=adapter
+        bookshelf_swipeRefresh.setOnRefreshListener {
+            loadBookshelf()
         }
         setupBottomNavigation()
+        select()
     }
-    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
-        menuInflater.inflate(R.menu.nav_bookshelf,menu)
-        return true
-    }
-
-    override fun onOptionsItemSelected(item: MenuItem): Boolean {
-        when(item.getItemId()) {
-            R.id.addBook-> {
-                val intent = Intent(this, MainActivity::class.java)
-                startActivity(intent)
-                finish()
-            }
-           R.id.editor->{
-               adapter.initMap()
-               adapter.setShowBox()
-               adapter.notifyDataSetChanged()
-//               bookshelf_checkBox.visibility=View.VISIBLE
-           }
-        }
-        return super.onContextItemSelected(item);
-    }
-    private fun inits() {
+    private fun loadBookshelf(){
+        booklist.clear()
         val bmobQuery = BmobQuery<BookShelf>()
         bmobQuery.addWhereEqualTo("userid", userId)
         bmobQuery.findObjects(object : FindListener<BookShelf>() {
-            override fun done(list: List<BookShelf>, e: BmobException?) {
+            override fun done(books: List<BookShelf>?, e: BmobException?) {
+                bookshelf_swipeRefresh.isRefreshing = false
                 if (e == null) {
-                    for (i in list) {
-                        Booklist.add(Book_Shelf(i.b_name))
-                        val adapter =BookshelfAdapter(this@BookShelfActivity,Booklist)
-                        recyclerView2.adapter = adapter
+                    booklist.clear()
+                    books?.let {
+                        booklist.addAll(it.map { b ->
+                            val url = b.picurl?: "default_url_or_handling_case"
+                            Book_Shelf(b.b_name,url)
+                        })
                     }
-                    Booklist.add(Book_Shelf("添加"))
-                    Booklist2.add(Book_Shelf("添加"))
-                    val adapter =BookshelfAdapter(this@BookShelfActivity,Booklist)
-                    recyclerView2.adapter = adapter
-                }
-            }
-        })
-    }
-    private fun refreshBookShelf(adapter: BookshelfAdapter) {
-        thread {
-            Thread.sleep(2000)
-            runOnUiThread {
-                initbookshelf()
-                adapter.notifyDataSetChanged()
-                swipeRefresh2.isRefreshing = false
-                Toast.makeText(this, "刷新成功！", Toast.LENGTH_SHORT).show()
-            }
-        }
-    }
-    private fun initbookshelf(){
-        Booklist.clear()
-        val bmobQuery = BmobQuery<BookShelf>()
-        bmobQuery.addWhereEqualTo("userid", userId)
-        bmobQuery.findObjects(object : FindListener<BookShelf>() {
-            override fun done(list: List<BookShelf>, e: BmobException?) {
-                if (e == null) {
-                    for (i in list) {
-                        Booklist.add(Book_Shelf(i.b_name))
-                    }
-                    Booklist.add(Book_Shelf("添加"))
-                    val adapter =BookshelfAdapter(this@BookShelfActivity,Booklist)
-                    recyclerView2.adapter = adapter
+                    booklist.add(Book_Shelf("添加", ""))
+                    adapter.notifyDataSetChanged()
                 }else {
                     Log.d("error", "error")
                 }
@@ -155,4 +96,90 @@ class BookShelfActivity : AppCompatActivity() {
             NavigationHelper.navigateTo(this, MyActivity::class.java)
         }
     }
+
+    private fun select(){
+        bookshelf_select.setOnClickListener{
+            default_title.visibility=View.GONE
+            selected_title.visibility = View.VISIBLE
+            bookshelf_layout_bottom_navigation.visibility=View.GONE
+            selected_bottom_navigation.visibility=View.VISIBLE
+            adapter.toggleSelectMode()
+        }
+        bookshelf_cancel.setOnClickListener {
+            default_title.visibility=View.VISIBLE
+            selected_title.visibility = View.GONE
+            bookshelf_layout_bottom_navigation.visibility=View.VISIBLE
+            selected_bottom_navigation.visibility=View.GONE
+            adapter.toggleSelectMode()
+        }
+        adapter.onSelectionChanged = { selectedCount ->
+            select_books.text = if (selectedCount > 0) "已选择 $selectedCount 本书籍" else "选择书籍"
+        }
+    }
+    fun onRemoveFromBookshelfClicked(view: View) {
+        //TODO：目前是用消息弹窗的方式，其他方法：若没有选中书籍时，可以设置移除按钮不可选中
+        if (adapter.selectedItems.isEmpty()) {
+            // 如果没有选中图书,弹出提示并返回
+            Toast.makeText(this, "请先选择要移除的图书", Toast.LENGTH_SHORT).show()
+            return
+        }
+        adapter.selectedItems.toList().also { positionList ->
+            // 创建并显示删除确认对话框
+            val builder = AlertDialog.Builder(this)
+            val dialogView = layoutInflater.inflate(R.layout.delete_dialog, null)
+            builder.setView(dialogView)
+
+            val dialog = builder.create()
+            dialogView.findViewById<TextView>(R.id.dialog_message)?.text = "是否将《${booklist[positionList.first()].bkname}》移出书架?"
+            dialogView.findViewById<Button>(R.id.dialog_cancel)?.setOnClickListener {
+                dialog.dismiss()
+            }
+            dialogView.findViewById<Button>(R.id.dialog_remove)?.setOnClickListener {
+                // 从 BookShelf 表中删除图书的逻辑
+                positionList.sorted().reversed().forEach { position ->
+                    val bmobQuery = BmobQuery<BookShelf>()
+                    bmobQuery.addWhereEqualTo("userid", userId)
+                    bmobQuery.addWhereEqualTo("b_name", booklist[position].bkname)
+                    bmobQuery.findObjects(object : FindListener<BookShelf>() {
+                        override fun done(books: List<BookShelf>?, e: BmobException?) {
+                            if (e == null) {
+                                books?.firstOrNull()?.also { book ->
+                                    book.delete(object : UpdateListener() {
+                                        override fun done(e: BmobException?) {
+                                            if (e == null) {
+                                                // 删除成功
+                                                booklist.removeAt(position)
+                                                adapter.selectedItems.remove(position)
+                                                adapter.selectedItems.forEach { selectedPosition ->
+                                                    if (selectedPosition > position) {
+                                                        adapter.selectedItems.remove(selectedPosition)
+                                                        adapter.selectedItems.add(selectedPosition - 1)
+                                                    }
+                                                }
+                                                Toast.makeText(
+                                                    this@BookShelfActivity,
+                                                    "移除成功",
+                                                    Toast.LENGTH_SHORT
+                                                ).show()
+                                                adapter.notifyDataSetChanged()
+                                                adapter.onSelectionChanged?.invoke(adapter.selectedItems.size)
+                                            } else {
+                                                // 删除失败
+                                            }
+                                            dialog.dismiss()
+                                        }
+                                    })
+                                }
+                            } else {
+                                // 查询失败
+                                dialog.dismiss()
+                            }
+                        }
+                    })
+                }
+            }
+
+            dialog.show()
+        }
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/zjgsu/jianshu/Activity/LoginActivity.kt b/app/src/main/java/com/zjgsu/jianshu/Activity/LoginActivity.kt
index bfdc113..0ffbf4b 100644
--- a/app/src/main/java/com/zjgsu/jianshu/Activity/LoginActivity.kt
+++ b/app/src/main/java/com/zjgsu/jianshu/Activity/LoginActivity.kt
@@ -39,7 +39,6 @@ class LoginActivity : AppCompatActivity() {
     private fun handleLogin() {
         val userAccount = et_blackOutName.text.toString()
         val userPassword = et_UserPassword.text.toString()
-
         if (userAccount.isEmpty() || userPassword.isEmpty()) {
             Toast.makeText(this, "账号或密码不能为空白", Toast.LENGTH_SHORT).show()
             return
diff --git a/app/src/main/java/com/zjgsu/jianshu/Activity/MainActivity.kt b/app/src/main/java/com/zjgsu/jianshu/Activity/MainActivity.kt
index d9f4578..a480ab3 100644
--- a/app/src/main/java/com/zjgsu/jianshu/Activity/MainActivity.kt
+++ b/app/src/main/java/com/zjgsu/jianshu/Activity/MainActivity.kt
@@ -179,7 +179,6 @@ class MainActivity : AppCompatActivity() {
                             )
                             goodbookList.add(bookRank)
                         }
-
                         listOfBookRankList.add(goodbookList)
                         billboardAdapter.notifyDataSetChanged()  // 确保在这里更新适配器
                     }
diff --git a/app/src/main/java/com/zjgsu/jianshu/Activity/PerceptionActivity.kt b/app/src/main/java/com/zjgsu/jianshu/Activity/PerceptionActivity.kt
index 2255d89..ce4b6fc 100644
--- a/app/src/main/java/com/zjgsu/jianshu/Activity/PerceptionActivity.kt
+++ b/app/src/main/java/com/zjgsu/jianshu/Activity/PerceptionActivity.kt
@@ -19,12 +19,10 @@ import kotlin.concurrent.thread
 
 class PerceptionActivity : AppCompatActivity() {
     private val PerceptionList = ArrayList<Perception>()
-    lateinit var userId:String
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_perception)
         Bmob.initialize(this, "8f9f1d1ea520b0ce4f84a6fa83a5f754")//连接bmob
-        userId = getSharedPreferences("userinf", Context.MODE_PRIVATE).getString("user_id", "").toString()
         inits()
         val layoutManager=LinearLayoutManager(this)
         perception_recyclerView.layoutManager = layoutManager
@@ -36,15 +34,9 @@ class PerceptionActivity : AppCompatActivity() {
         }
 
         Log.d("myLog",perception_recyclerView.adapter.toString())
-
-        fab.setOnClickListener {
-            Toast.makeText(this,"新建随笔",Toast.LENGTH_SHORT).show()
-        }
         fab.setOnClickListener {
             val intent=Intent(this,sendPerceptionActivity::class.java)
-            intent.putExtra("userid", userId)
             startActivity(intent)
-            finish()
         }
         setupBottomNavigation()
     }
diff --git a/app/src/main/java/com/zjgsu/jianshu/Activity/author_introductionActivity.kt b/app/src/main/java/com/zjgsu/jianshu/Activity/author_introductionActivity.kt
deleted file mode 100644
index 31f26bd..0000000
--- a/app/src/main/java/com/zjgsu/jianshu/Activity/author_introductionActivity.kt
+++ /dev/null
@@ -1,101 +0,0 @@
-package com.zjgsu.jianshu
-
-import android.content.Intent
-import android.graphics.Bitmap
-import android.graphics.BitmapFactory
-import android.os.Bundle
-import android.util.Log
-import android.widget.Toast
-import androidx.appcompat.app.AppCompatActivity
-import androidx.core.content.ContextCompat
-import androidx.recyclerview.widget.StaggeredGridLayoutManager
-import cn.bmob.v3.Bmob
-import cn.bmob.v3.BmobQuery
-import cn.bmob.v3.exception.BmobException
-import cn.bmob.v3.listener.FindListener
-import com.zjgsu.jianshu.Bmob.Book_info_bmob
-import kotlinx.android.synthetic.main.activity_anthor_introduction.*
-import kotlinx.android.synthetic.main.activity_main.*
-import kotlinx.android.synthetic.main.book_author_item.*
-import kotlinx.android.synthetic.main.expandable.*
-import java.io.InputStream
-import java.net.HttpURLConnection
-import java.net.URL
-
-class author_introductionActivity : AppCompatActivity() {
-    private var bookList = ArrayList<BookAuthor>()
-    private var author_selfintro:String=""
-    private val url_list = mutableListOf<String>()
-    private var flag: Int =0
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_anthor_introduction)
-        Bmob.initialize(this, "8f9f1d1ea520b0ce4f84a6fa83a5f754")//连接bmob
-        book_authorname1.text = intent.getStringExtra("author_name")
-        inits()
-        val layoutManager =
-            StaggeredGridLayoutManager(1, StaggeredGridLayoutManager.HORIZONTAL)//第一个参数是列数
-        recyclerView1.layoutManager = layoutManager
-        var adapter = Book_authorAdapter(bookList)
-        recyclerView1.adapter = adapter
-        expand_collapse.setOnClickListener{
-            val myDialog:MyDialog= MyDialog(this)
-            myDialog.setTitle("作者介绍")
-            myDialog.setMessage(author_selfintro)
-            myDialog.setCancel("cancel",MyDialog.IOnCancelListener {
-                fun onCancel(dialog:MyDialog) {
-                    Toast.makeText(this,"取消",Toast.LENGTH_SHORT).show()
-                }
-            })
-            myDialog.setConfirm("confirm",MyDialog.IOnConfirmListener {
-                fun OnConfirm(dialog:MyDialog){
-                    Toast.makeText(this,"确认",Toast.LENGTH_SHORT).show()
-                }
-            })
-            myDialog.show()
-        }
-    }
-    private fun inits() {
-        val bmobQuery = BmobQuery<Book_info_bmob>()
-        bmobQuery.addWhereEqualTo("author_name",book_authorname1.text.toString())
-        bmobQuery.findObjects(object : FindListener<Book_info_bmob>() {
-            override fun done(list: List<Book_info_bmob>, e: BmobException?) {
-                if (e == null) {
-                    for (i in list) {
-                        if(flag==0){
-                            author_selfintro=i.author_introduce
-                            flag=1
-                            url_list.add(i!!.picture.url)
-                            //加载authorPic
-                            object : Thread() {
-                                override fun run() {
-                                    try {
-                                        //作者
-                                        val url = URL(i!!.authorpic.url)
-                                        Log.d("myLog", url.toString())
-                                        val connection: HttpURLConnection =
-                                            url.openConnection() as HttpURLConnection
-                                        connection.setRequestMethod("GET")
-                                        connection.setConnectTimeout(5000)
-                                        val `in`: InputStream = connection.getInputStream()
-                                        val bitmap: Bitmap =
-                                            BitmapFactory.decodeStream(`in`)
-                                        author_img.setImageBitmap(bitmap)
-                                    } catch (e: Exception) {
-                                        e.printStackTrace()
-                                    }
-                                }
-                            }.start()
-                        }
-                        bookList.add(BookAuthor(i.name, i.author_name))
-                        val adapter = Book_authorAdapter(bookList)
-                        recyclerView1.adapter = adapter
-                    }
-                } else {
-                    Log.d("error", "error")
-                }
-                expand_text_view.text=author_selfintro
-            }
-        })
-    }
-}
\ No newline at end of file
diff --git a/app/src/main/java/com/zjgsu/jianshu/Activity/sendPerceptionActivity.kt b/app/src/main/java/com/zjgsu/jianshu/Activity/sendPerceptionActivity.kt
index 5dd3926..eb10b40 100644
--- a/app/src/main/java/com/zjgsu/jianshu/Activity/sendPerceptionActivity.kt
+++ b/app/src/main/java/com/zjgsu/jianshu/Activity/sendPerceptionActivity.kt
@@ -13,34 +13,35 @@ import cn.bmob.v3.Bmob
 import cn.bmob.v3.BmobQuery
 import cn.bmob.v3.exception.BmobException
 import cn.bmob.v3.listener.FindListener
+import cn.bmob.v3.listener.QueryListener
 import cn.bmob.v3.listener.SaveListener
+import com.bumptech.glide.Glide
 import com.zjgsu.jianshu.*
 import com.zjgsu.jianshu.Bmob.Book_info_bmob
 import com.zjgsu.jianshu.Bmob.Perception_bmob
 import com.zjgsu.jianshu.Bmob.User_bmob
+import kotlinx.android.synthetic.main.activity_book_info.*
 import kotlinx.android.synthetic.main.activity_sendperception.*
 import java.io.InputStream
 import java.net.HttpURLConnection
 import java.net.URL
 
 class sendPerceptionActivity:AppCompatActivity() {
-    private var bookList = ArrayList<BookAuthor>()
-    lateinit var myuserid:String
+    private var bookList = ArrayList<Book_Shelf>()
     lateinit var userId:String
+    private lateinit var adapter: send_perceptionAdapter
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_sendperception)
-        supportActionBar?.hide()
         Bmob.initialize(this, "8f9f1d1ea520b0ce4f84a6fa83a5f754")//连接bmob
         userId = getSharedPreferences("userinf", Context.MODE_PRIVATE).getString("user_id", "").toString()
-        myuserid=intent.getStringExtra("userid").toString()
-        inits()
+        adapter = send_perceptionAdapter(bookList)
         val layoutManager =
             StaggeredGridLayoutManager(1, StaggeredGridLayoutManager.HORIZONTAL)//第一个参数是列数
         send_recyclerview.layoutManager = layoutManager
-        var adapter = send_perceptionAdapter(bookList)
         send_recyclerview.adapter = adapter
-        delete.setOnClickListener {
+        inits()
+        send_return.setOnClickListener {
             val intent= Intent(this,PerceptionActivity::class.java)
             startActivity(intent)
             finish()
@@ -52,7 +53,7 @@ class sendPerceptionActivity:AppCompatActivity() {
             else {
                 val perception = Perception_bmob()
                 perception.perception = mycontent.text.toString()
-                perception.userid = myuserid
+                perception.userid = userId
                 perception.b_name = selectedBook
                 perception.save(object : SaveListener<String>() {
                     override fun done(objectId: String?, e: BmobException?) {
@@ -80,43 +81,35 @@ class sendPerceptionActivity:AppCompatActivity() {
     private fun inits(){
         val bmobQuery = BmobQuery<Book_info_bmob>()
         bmobQuery.findObjects(object : FindListener<Book_info_bmob>() {
-            override fun done(list: List<Book_info_bmob>, e: BmobException?) {
+            override fun done(lists: List<Book_info_bmob>, e: BmobException?) {
                 if (e == null) {
-                    for (i in list) {
-                        bookList.add(BookAuthor(i.name, i.author_name))
-                        val adapter = send_perceptionAdapter(bookList)
-                        send_recyclerview.adapter = adapter
+                    bookList.clear()
+                    lists?.let {
+                        bookList.addAll(it.map { b ->
+                            // 使用安全调用和Elvis操作符提供默认值或进行错误处理
+                            val url = b.picture?.url ?: "default_url_or_handling_case"
+                            Book_Shelf(b.name,url)
+                        })
                     }
+                    adapter.notifyDataSetChanged()
                 } else {
                     Log.d("error", "error")
                 }
             }
         })
-        val query=BmobQuery<User_bmob>()
-        query.findObjects(object:FindListener<User_bmob>(){
-            override fun done(list:List<User_bmob>,e:BmobException?){
-                if(e==null){
-                    for(i in list){
-                        if(i.objectId.equals(userId)) {
-                            object : Thread() {
-                                override fun run() {
-                                    try {
-                                        val url = URL(i!!.face.url)
-                                        val connection: HttpURLConnection =
-                                            url.openConnection() as HttpURLConnection
-                                        connection.setRequestMethod("GET")
-                                        connection.setConnectTimeout(5000)
-                                        val `in`: InputStream = connection.getInputStream()
-                                        val bitmap: Bitmap =
-                                            BitmapFactory.decodeStream(`in`)
-                                       touxiang.setImageBitmap(bitmap)
-                                    } catch (e: Exception) {
-                                        e.printStackTrace()
-                                    }
-                                }
-                            }.start()
-                        }
+        val queryUser = BmobQuery<User_bmob>()
+        queryUser.getObject(userId, object : QueryListener<User_bmob>() {
+            override fun done(user: User_bmob?, e: BmobException?) {
+                if (e == null) {
+                    user?.let {
+                        Glide.with(this@sendPerceptionActivity) // 传入 Context
+                            .load(it.face.url) // 加载图片的 URL
+                            .placeholder(R.drawable.pre_load) // 设置占位图
+                            .error(R.drawable.fail_load) // 设置加载失败时显示的图片
+                            .into(send_avatar) // 将图片加载到指定的 ImageView 中
                     }
+                } else {
+                    Log.e("QueryUser", e.toString())
                 }
             }
         })
diff --git a/app/src/main/java/com/zjgsu/jianshu/Adapter/Book_authorAdapter.kt b/app/src/main/java/com/zjgsu/jianshu/Adapter/Book_authorAdapter.kt
index 7f533a9..2092d4a 100644
--- a/app/src/main/java/com/zjgsu/jianshu/Adapter/Book_authorAdapter.kt
+++ b/app/src/main/java/com/zjgsu/jianshu/Adapter/Book_authorAdapter.kt
@@ -15,6 +15,7 @@ import cn.bmob.v3.BmobQuery
 import cn.bmob.v3.exception.BmobException
 import cn.bmob.v3.listener.FindListener
 import cn.bmob.v3.listener.SaveListener
+import com.bumptech.glide.Glide
 import com.zjgsu.jianshu.Bmob.BookShelf
 import com.zjgsu.jianshu.Bmob.Book_bmob
 import kotlinx.android.synthetic.main.activity_main.view.*
@@ -23,10 +24,9 @@ import java.io.InputStream
 import java.net.HttpURLConnection
 import java.net.URL
 
-class Book_authorAdapter(val bookList:List<BookAuthor>):RecyclerView.Adapter<Book_authorAdapter.ViewHolder>() {
-    lateinit var userId:String
+class Book_authorAdapter(val authorworkList:List<AuthorWork>,val userId: String):RecyclerView.Adapter<Book_authorAdapter.ViewHolder>() {
     inner class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
-        val bookList_Image: ImageView = view.findViewById(R.id.book_Image1)
+        val workimg: ImageView = view.findViewById(R.id.authorwork_img)
         val addButton:Button=view.findViewById(R.id.addButton)
     }
 
@@ -35,83 +35,48 @@ class Book_authorAdapter(val bookList:List<BookAuthor>):RecyclerView.Adapter<Boo
         return ViewHolder(view)
     }
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        val book = bookList[position]
-        val query = BmobQuery<Book_bmob>()
-        query.addWhereEqualTo("name",book.name)
-        query.findObjects(object : FindListener<Book_bmob>() {
-            override fun done(p0: MutableList<Book_bmob>?, p1: BmobException?) {
-                if (p1 == null) {
-                    if (p0 != null && p0.size > 0) {
-                        for (p in p0) {
-                            object : Thread() {
-                                override fun run() {
-                                    try {
-                                        val url = URL(p!!.picture.url)
-                                        val connection: HttpURLConnection =
-                                            url.openConnection() as HttpURLConnection
-                                        connection.setRequestMethod("GET")
-                                        connection.setConnectTimeout(5000)
-                                        val `in`: InputStream = connection.getInputStream()
-                                        val bitmap: Bitmap =
-                                            BitmapFactory.decodeStream(`in`)
-                                        holder.bookList_Image.setImageBitmap(bitmap)
-                                    } catch (e: Exception) {
-                                        e.printStackTrace()
-                                    }
-                                }
-                            }.start()
-                        }
-                    }
-                }
-            }
-        })
+        val authorwork = authorworkList[position]
+        Glide.with(holder.itemView.context)
+            .load(authorwork.bookurl) // 确保你的Book对象有正确的图片URL
+            .placeholder(R.drawable.pre_load) // 可以设置一个占位图
+            .error(R.drawable.fail_load) // 设置加载失败的图
+            .into(holder.workimg)
         val query1=BmobQuery<BookShelf>()
         query1.addWhereEqualTo("userid", userId)
-        query1.addWhereEqualTo("b_name",book.name)
+        query1.addWhereEqualTo("b_name",authorwork.book_name)
         query1.findObjects(object :FindListener<BookShelf>() {
             override fun done(p0: MutableList<BookShelf>?, p1: BmobException?) {
                 if (p1 == null) {
                     if (p0 != null && p0.size > 0) {
+                        holder.addButton.isEnabled = false
                         holder.addButton.setText("已添加")
-                    }
-                }
-            }
-        })
-        holder.bookList_Image.setOnClickListener {
-            val intent= Intent(holder.itemView.context,BookInformationActivity::class.java)
-            intent.putExtra("Book_name",book.name)
-            ContextCompat.startActivity(holder.itemView.context, intent, null)
-        }
-        holder.addButton.setOnClickListener{
-//            val intent = Intent(holder.itemView.context,BookShelfActivity::class.java)
-//            intent.putExtra("Book_name",book.name)
-//            ContextCompat.startActivity(holder.itemView.context,intent,null)
-            val query= BmobQuery<BookShelf>()
-            query.addWhereEqualTo("userid", userId)
-            query.addWhereEqualTo("b_name",book.name)
-            query.findObjects(object :FindListener<BookShelf>(){
-                override fun done(p0: MutableList<BookShelf>?, p1: BmobException?) {
-                    if(p1==null){
-                        if(p0!=null&&p0.size>0){
-//                           Toast.makeText(author_introductionActivity, "11", Toast.LENGTH_SHORT)
-                        }
-                        else{
-                            val bookshelf_record=BookShelf()
-                            bookshelf_record.setb_name(book.name)
+                    }else{
+                        holder.addButton.isEnabled = true
+                        holder.addButton.setOnClickListener {
+                            val bookshelf_record = BookShelf()
+                            bookshelf_record.setb_name(authorwork.book_name)
                             bookshelf_record.setuserid(userId)
+                            bookshelf_record.setpicurl(authorwork.bookurl)
                             bookshelf_record.save(object : SaveListener<String>() {
                                 override fun done(objectId: String?, e: BmobException?) {
                                     if (e == null) {
-                                     holder.addButton.text="已添加"
+                                        holder.addButton.isEnabled = false
+                                        holder.addButton.text = "已添加"
                                     } else {
+                                        // 添加失败的处理
                                     }
                                 }
                             })
                         }
                     }
                 }
-            })
+            }
+        })
+        holder.workimg.setOnClickListener {
+            val intent= Intent(holder.itemView.context,BookInformationActivity::class.java)
+            intent.putExtra("Book_name",authorwork.book_name)
+            ContextCompat.startActivity(holder.itemView.context, intent, null)
         }
     }
-    override fun getItemCount() =bookList.size
+    override fun getItemCount() =authorworkList.size
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/zjgsu/jianshu/Adapter/BookshelfAdapter.kt b/app/src/main/java/com/zjgsu/jianshu/Adapter/BookshelfAdapter.kt
index 48de42a..1c16898 100644
--- a/app/src/main/java/com/zjgsu/jianshu/Adapter/BookshelfAdapter.kt
+++ b/app/src/main/java/com/zjgsu/jianshu/Adapter/BookshelfAdapter.kt
@@ -2,10 +2,6 @@ package com.zjgsu.jianshu
 
 import android.content.Context
 import android.content.Intent
-import android.graphics.Bitmap
-import android.graphics.BitmapFactory
-import android.opengl.Visibility
-import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -14,201 +10,80 @@ import android.widget.ImageView
 import android.widget.TextView
 import androidx.core.content.ContextCompat
 import androidx.recyclerview.widget.RecyclerView
-import cn.bmob.v3.BmobQuery
-import cn.bmob.v3.exception.BmobException
-import cn.bmob.v3.listener.FindListener
-import java.io.InputStream
-import java.net.HttpURLConnection
-import java.net.URL
-import android.widget.AdapterView.OnItemLongClickListener
-import android.widget.AdapterView.VISIBLE
-import android.widget.Toast
-import android.view.View.OnLongClickListener
+import com.bumptech.glide.Glide
 
-import android.widget.CompoundButton
+//TODO:选中书本的时候书本封面变灰
+class BookshelfAdapter(val context: Context, val bookshelf: ArrayList<Book_Shelf>) : RecyclerView.Adapter<BookshelfAdapter.ViewHolder>() {
+    private var isSelectMode: Boolean = false
+    val selectedItems = mutableSetOf<Int>()     //当前选中的书本position列表
+    var onSelectionChanged: ((Int) -> Unit)? = null
 
-import android.view.animation.Animation
-import com.zjgsu.jianshu.Bmob.Book_bmob
-
-
-class BookshelfAdapter(val context: Context, val bookshelf: ArrayList<Book_Shelf>) : RecyclerView.Adapter<BookshelfAdapter.ViewHolder>(),
-    View.OnLongClickListener, View.OnClickListener {
     inner class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
-        val book_img: ImageView = view.findViewById(R.id.bookshelf_bkimg)
-        val book_name: TextView = view.findViewById(R.id.bookshelf_bkname)
-//        val mCheckBox: CheckBox = view.findViewById(R.id.bookshelf_checkBox)
-    }
-    private var onItemClickListener: RecyclerViewOnItemClickListener? = null
-    private var isshowBox: Boolean = false
-    private val map: MutableMap<Int, Boolean?> = HashMap()
-    private var flag: Boolean = false
-    fun initMap() {
-        for (i in bookshelf.indices) {
-            map[i] = false
-        }
-        Log.d("initmap", "no")
-    }
-
-    fun setSelectItem(position: Int) {
-        //对当前状态取反
-        if (map[position]!!) {
-            map[position] = false
-        } else {
-            map[position] = true
-        }
-        notifyItemChanged(position)
-    }
-
-    fun setShowBox() {
-        //取反
-        isshowBox = !isshowBox
-    }
-
-    fun getMap(): Map<Int, Boolean?> {
-        return map
-    }
-
-    //    fun setOnItemLongClickListener(onItemLongClickListener: RecyclerViewOnItemLongClickListener) {
-//        this.onItemLongClickListener = onItemLongClickListener;
-//    }
-//    interface RecyclerViewOnItemClickListener {
-//        fun onItemClickListener(view: View?, position: Int)
-//    }
-//    interface RecyclerViewOnItemLongClickListener {
-//        fun onItemLongClickListener(view: View, position: Int): Boolean;
-//    }
-    interface RecyclerViewOnItemClickListener {
-        //点击事件
-        fun onItemClickListener(view: View?, position: Int)
-
-        //长按事件
-        fun onItemLongClickListener(view: View?, position: Int): Boolean
-    }
-
-    fun setRecyclerViewOnItemClickListener(onItemClickListener: RecyclerViewOnItemClickListener?) {
-        this.onItemClickListener = onItemClickListener
-    }
-
-    override fun onClick(v: View) {
-        if (onItemClickListener != null) {
-            //注意这里使用getTag方法获取数据
-            onItemClickListener!!.onItemClickListener(v, v.tag as Int)
-        }
-    }
-
-    override fun onLongClick(v: View): Boolean {
-        initMap()
-        return onItemClickListener != null && onItemClickListener!!.onItemLongClickListener(
-            v,
-            (v.tag as Int)
-        )
+        val bookshelfBkimg: ImageView = view.findViewById(R.id.bookshelf_bkimg)
+        val bookshelfSelectIcon: ImageView = view.findViewById(R.id.bookshelf_select_icon)
+        val bookshelfBkname: TextView = view.findViewById(R.id.bookshelf_bkname)
     }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
         val view = LayoutInflater.from(context).inflate(R.layout.bookshelf_item, parent, false)
-        view.setOnLongClickListener(this)
-        view.setOnClickListener(this)
         return ViewHolder(view)
     }
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-//        Log.d("check", isshowBox.toString())
-//        if (isshowBox) {
-//            holder.mCheckBox.visibility = VISIBLE
-//        } else {
-//            holder.mCheckBox.visibility = View.INVISIBLE
-//        }
-//        holder.mCheckBox.setOnCheckedChangeListener(CompoundButton.OnCheckedChangeListener { buttonView, isChecked -> //用map集合保存
-//            map[position] = isChecked
-//        })
-        // 设置CheckBox的状态
-        if (map[position] == null) {
-            map[position] = false
-        }
-//        holder.mCheckBox.isChecked = map[position]!!
-//        holder.itemView.setOnClickListener{
-//            if(!flag){
-//            holder.mCheckBox.visibility=View.VISIBLE
-//                flag=true
-//            }
-//            else{
-//                holder.mCheckBox.visibility=View.INVISIBLE
-//                flag=false
-//            }
-//        }
         val book = bookshelf[position]
-//        if (holder is ViewHolder) {
-//            val viewHolder: ViewHolder = holder
-//            if (selected == position) {
-//                viewHolder.mCheckBox.setChecked(true)
-//                viewHolder.itemView.setSelected(true)
-//            } else {
-//                viewHolder.mCheckBox.setChecked(false)
-//                viewHolder.itemView.setSelected(false)
-//            }
-//            if (onItemClickListener != null) {
-//                viewHolder.itemView.setOnClickListener(View.OnClickListener {
-//                    onItemClickListener!!.onItemClickListener(
-//                        viewHolder.itemView,
-//                        viewHolder.adapterPosition
-//                    )
-//                })
-//            }
-//        }
-        var flag: Boolean = false
-        holder.book_img.setTag("1")
-        if (book.bkname.equals("添加")) {
-            holder.book_img.scaleType = ImageView.ScaleType.CENTER_INSIDE
-            holder.book_img.setImageResource(R.drawable.add)
-            flag = true
-        }
-        holder.book_name.text = book.bkname
-        val query = BmobQuery<Book_bmob>()
-        query.addWhereEqualTo("name", book.bkname)
-        query.findObjects(object : FindListener<Book_bmob>() {
-            override fun done(p0: MutableList<Book_bmob>?, p1: BmobException?) {
-                if (p1 == null) {
-                    if (p0 != null && p0.size > 0) {
-                        for (p in p0) {
-                            object : Thread() {
-                                override fun run() {
-                                    try {
-                                        if (flag) {
+        holder.bookshelfBkname.text = book.bkname
 
-                                        } else {
-                                            holder.book_img.setTag("0")
-                                            val url = URL(p!!.picture.url)
-                                            val connection: HttpURLConnection =
-                                                url.openConnection() as HttpURLConnection
-                                            connection.setRequestMethod("GET")
-                                            connection.setConnectTimeout(5000)
-                                            val `in`: InputStream = connection.getInputStream()
-                                            val bitmap: Bitmap = BitmapFactory.decodeStream(`in`)
-                                            holder.book_img.setImageBitmap(bitmap)
-                                        }
-                                    } catch (e: Exception) {
-                                        e.printStackTrace()
-                                    }
-                                }
-                            }.start()
-                        }
-                    }
-                }
-            }
-        })
-        holder.book_img.setOnClickListener {
-            val res = holder.book_img.getTag()
-            if (res == "0") {
-                val intent = Intent(holder.itemView.context, BookInformationActivity::class.java)
-                intent.putExtra("Book_name", book.bkname)
-                ContextCompat.startActivity(holder.itemView.context, intent, null)
-            } else {
+        if (book.bkname.equals("添加")) {
+            holder.bookshelfBkimg.scaleType = ImageView.ScaleType.CENTER_INSIDE
+            holder.bookshelfBkimg.setImageResource(R.drawable.add)
+            holder.bookshelfSelectIcon.visibility = View.GONE
+        } else {
+            holder.bookshelfSelectIcon.visibility = if (isSelectMode) View.VISIBLE else View.GONE
+            holder.bookshelfSelectIcon.setImageResource(if (selectedItems.contains(position)) R.drawable.selected else R.drawable.select)
+            Glide.with(holder.itemView.context)
+                .load(book.picurl)
+                .placeholder(R.drawable.pre_load)
+                .error(R.drawable.fail_load)
+                .into(holder.bookshelfBkimg)
+        }
+
+        holder.bookshelfSelectIcon.setOnClickListener {  //选择or取消
+            toggleSelection(position)
+        }
+
+        holder.bookshelfBkimg.setOnClickListener {
+            if (book.bkname.equals("添加")) {
                 val intent = Intent(context, MainActivity::class.java)
                 context.startActivity(intent)
+            } else {
+                if (isSelectMode) {
+                    toggleSelection(position)
+                } else {
+                    val intent = Intent(holder.itemView.context, BookInformationActivity::class.java)
+                    intent.putExtra("Book_name", book.bkname)
+                    ContextCompat.startActivity(holder.itemView.context, intent, null)
+                }
             }
         }
     }
 
     override fun getItemCount() = bookshelf.size
-}
 
+    fun toggleSelectMode() {
+        isSelectMode = !isSelectMode
+        if (!isSelectMode) {
+            selectedItems.clear()
+            onSelectionChanged?.invoke(selectedItems.size)
+        }
+        notifyDataSetChanged()
+    }
+    private fun toggleSelection(position: Int) {
+        if (selectedItems.contains(position)) {
+            selectedItems.remove(position)
+        } else {
+            selectedItems.add(position)
+        }
+        notifyItemChanged(position)
+        onSelectionChanged?.invoke(selectedItems.size)
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/zjgsu/jianshu/Adapter/send_perceptionAdapter.kt b/app/src/main/java/com/zjgsu/jianshu/Adapter/send_perceptionAdapter.kt
index 18277ed..17e73f2 100644
--- a/app/src/main/java/com/zjgsu/jianshu/Adapter/send_perceptionAdapter.kt
+++ b/app/src/main/java/com/zjgsu/jianshu/Adapter/send_perceptionAdapter.kt
@@ -16,6 +16,7 @@ import cn.bmob.v3.BmobQuery
 import cn.bmob.v3.exception.BmobException
 import cn.bmob.v3.listener.FindListener
 import cn.bmob.v3.listener.SaveListener
+import com.bumptech.glide.Glide
 import com.zjgsu.jianshu.Activity.sendPerceptionActivity
 import com.zjgsu.jianshu.Bmob.BookShelf
 import com.zjgsu.jianshu.Bmob.Book_bmob
@@ -25,73 +26,25 @@ import java.io.InputStream
 import java.net.HttpURLConnection
 import java.net.URL
 lateinit var selectedBook:String
-class send_perceptionAdapter(val bookList:List<BookAuthor>):RecyclerView.Adapter<send_perceptionAdapter.ViewHolder>() {
+class send_perceptionAdapter(val bookList:List<Book_Shelf>):RecyclerView.Adapter<send_perceptionAdapter.ViewHolder>() {
     inner class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
-        val book_Image: ImageView = view.findViewById(R.id.book_Image2)
-        val book_Name: TextView = view.findViewById(R.id.book_name)
+        val book_Image: ImageView = view.findViewById(R.id.send_bookimg)
+        val book_Name: TextView = view.findViewById(R.id.send_bookname)
         val background: LinearLayout = view.findViewById(R.id.bookpic_background)
     }
     private val map: MutableMap<Int, Boolean?> = HashMap()
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
         val view = LayoutInflater.from(parent.context).inflate(R.layout.bookpic_item, parent, false)
-//       val viewHolder=ViewHolder(view)
-//        viewHolder.book_Image.setOnClickListener {
-//            val position=viewHolder.adapterPosition
-//            val book=bookList[position]
-//            var cnt=0
-//            for (i in map){
-//                if(i.value==true)
-//                    cnt++
-//            }
-//            if(cnt==0) {
-//                if (map[position] == false) {
-//                    map[position] = true
-//                    viewHolder.background.setBackgroundColor(Color.CYAN)
-//                    selectedBook = book.name
-//                } else {
-//                    map[position] = false
-//                    viewHolder.background.setBackgroundColor(Color.WHITE)
-//                    selectedBook = ""
-//                }
-//            }
-//            else{
-//                Toast.makeText(parent.context,"只能选择一本书！",Toast.LENGTH_SHORT).show()
-//            }
-//        }
         return ViewHolder(view)
     }
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
         val book = bookList[position]
-        val query = BmobQuery<Book_bmob>()
-        query.addWhereEqualTo("name",book.name)
-        query.findObjects(object : FindListener<Book_bmob>() {
-            override fun done(p0: MutableList<Book_bmob>?, p1: BmobException?) {
-                if (p1 == null) {
-                    if (p0 != null && p0.size > 0) {
-                        for (p in p0) {
-                            holder.book_Name.text=p.name
-                            object : Thread() {
-                                override fun run() {
-                                    try {
-                                        val url = URL(p!!.picture.url)
-                                        val connection: HttpURLConnection =
-                                            url.openConnection() as HttpURLConnection
-                                        connection.setRequestMethod("GET")
-                                        connection.setConnectTimeout(5000)
-                                        val `in`: InputStream = connection.getInputStream()
-                                        val bitmap: Bitmap =
-                                            BitmapFactory.decodeStream(`in`)
-                                        holder.book_Image.setImageBitmap(bitmap)
-                                    } catch (e: Exception) {
-                                        e.printStackTrace()
-                                    }
-                                }
-                            }.start()
-                        }
-                    }
-                }
-            }
-        })
+        Glide.with(holder.itemView.context)
+            .load(book.picurl) // 确保你的Book对象有正确的图片URL
+            .placeholder(R.drawable.pre_load) // 可以设置一个占位图
+            .error(R.drawable.fail_load) // 设置加载失败的图
+            .into(holder.book_Image)
+        holder.book_Name.text=book.bkname
         holder.book_Image.setOnClickListener {
             var cnt=0
             for (i in map){
@@ -101,7 +54,7 @@ class send_perceptionAdapter(val bookList:List<BookAuthor>):RecyclerView.Adapter
             if(cnt==0) {
                 map[position]=true
                 holder.background.setBackgroundColor(Color.CYAN)
-                selectedBook = book.name
+                selectedBook = book.bkname
             }
             else if(cnt==1){
                 if (map[position] == true){
@@ -113,7 +66,6 @@ class send_perceptionAdapter(val bookList:List<BookAuthor>):RecyclerView.Adapter
                 }
             }
             else{
-
             }
         }
     }
diff --git a/app/src/main/java/com/zjgsu/jianshu/Bmob/Author_bmob.kt b/app/src/main/java/com/zjgsu/jianshu/Bmob/Author_bmob.kt
new file mode 100644
index 0000000..98445e7
--- /dev/null
+++ b/app/src/main/java/com/zjgsu/jianshu/Bmob/Author_bmob.kt
@@ -0,0 +1,10 @@
+package com.zjgsu.jianshu.Bmob
+
+import cn.bmob.v3.BmobObject
+import cn.bmob.v3.datatype.BmobFile
+
+class Author_bmob:BmobObject() {
+    val picture:BmobFile=BmobFile()
+    val author_introduce:String=""
+    val author_name:String=""
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/zjgsu/jianshu/Bmob/BookShelf.kt b/app/src/main/java/com/zjgsu/jianshu/Bmob/BookShelf.kt
index 2671cfe..bd1cbc0 100644
--- a/app/src/main/java/com/zjgsu/jianshu/Bmob/BookShelf.kt
+++ b/app/src/main/java/com/zjgsu/jianshu/Bmob/BookShelf.kt
@@ -5,10 +5,14 @@ import cn.bmob.v3.BmobObject
 class BookShelf:BmobObject(){
     var b_name:String = ""
     var userid:String=""
+    var picurl:String=""
     fun setb_name(bookname: String){
         this.b_name=bookname
     }
     fun setuserid(uid: String){
         this.userid=uid
     }
+    fun setpicurl(picurl:String){
+        this.picurl=picurl
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/zjgsu/jianshu/Bmob/Book_inf_bmob.kt b/app/src/main/java/com/zjgsu/jianshu/Bmob/Book_inf_bmob.kt
index 178a397..07a79e0 100644
--- a/app/src/main/java/com/zjgsu/jianshu/Bmob/Book_inf_bmob.kt
+++ b/app/src/main/java/com/zjgsu/jianshu/Bmob/Book_inf_bmob.kt
@@ -15,6 +15,7 @@ class Book_info_bmob:BmobObject(){
     var tuijian:Int=0
     var buxing:Int=0
     var countOfReaders:Int=0
+    var authorid:String=""
     fun settuijian(tuijian1: Int){
         this.tuijian=tuijian1
     }
diff --git a/app/src/main/java/com/zjgsu/jianshu/BookAuthor.kt b/app/src/main/java/com/zjgsu/jianshu/BookAuthor.kt
index 1f71221..0857e65 100644
--- a/app/src/main/java/com/zjgsu/jianshu/BookAuthor.kt
+++ b/app/src/main/java/com/zjgsu/jianshu/BookAuthor.kt
@@ -1,3 +1,3 @@
 package com.zjgsu.jianshu
 
-class BookAuthor(val name:String,val author_name:String)
\ No newline at end of file
+class AuthorWork(val book_name:String,val author_name:String,val bookurl:String)
\ No newline at end of file
diff --git a/app/src/main/java/com/zjgsu/jianshu/Book_Shelf.kt b/app/src/main/java/com/zjgsu/jianshu/Book_Shelf.kt
index 15af46c..9482a99 100644
--- a/app/src/main/java/com/zjgsu/jianshu/Book_Shelf.kt
+++ b/app/src/main/java/com/zjgsu/jianshu/Book_Shelf.kt
@@ -2,4 +2,4 @@ package com.zjgsu.jianshu
 
 import cn.bmob.v3.datatype.BmobFile
 
-class Book_Shelf(val bkname:String)
\ No newline at end of file
+class Book_Shelf(val bkname:String,val picurl:String)
\ No newline at end of file
diff --git a/app/src/main/res/drawable/remove.png b/app/src/main/res/drawable/remove.png
new file mode 100644
index 0000000..0144f44
Binary files /dev/null and b/app/src/main/res/drawable/remove.png differ
diff --git a/app/src/main/res/drawable/select.png b/app/src/main/res/drawable/select.png
new file mode 100644
index 0000000..f31a228
Binary files /dev/null and b/app/src/main/res/drawable/select.png differ
diff --git a/app/src/main/res/drawable/selected.png b/app/src/main/res/drawable/selected.png
new file mode 100644
index 0000000..80f86d7
Binary files /dev/null and b/app/src/main/res/drawable/selected.png differ
diff --git a/app/src/main/res/layout/activity_anthor_introduction.xml b/app/src/main/res/layout/activity_anthor_introduction.xml
index e917abf..544ac97 100644
--- a/app/src/main/res/layout/activity_anthor_introduction.xml
+++ b/app/src/main/res/layout/activity_anthor_introduction.xml
@@ -1,18 +1,40 @@
 <?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".author_introductionActivity">
+    tools:context=".Author_introductionActivity">
 
     <LinearLayout
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:orientation="vertical"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintTop_toTopOf="parent">
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
 
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal">
+
+            <ImageView
+                android:id="@+id/author_back"
+                android:layout_width="40dp"
+                android:layout_height="40dp"
+                android:layout_marginStart="10dp"
+                android:padding="8dp"
+                android:src="@drawable/return1" />
+
+            <TextView
+                android:id="@+id/page_title"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center"
+                android:layout_weight="1"
+                android:gravity="center"
+                android:text="作者简介"
+                android:textSize="18sp"
+                android:textStyle="bold" />
+
+        </LinearLayout>
 
         <LinearLayout
             android:layout_width="match_parent"
@@ -20,80 +42,72 @@
             android:layout_margin="10dp"
             android:orientation="horizontal">
 
-
-            <LinearLayout
-                android:layout_width="250dp"
-                android:layout_height="180dp"
-                android:layout_weight="1"
-                android:orientation="horizontal">
-
-                <ImageView
-                    android:id="@+id/author_img"
-                    android:layout_width="match_parent"
-                    android:layout_height="match_parent"
-                    android:layout_weight="1"
-                    tools:srcCompat="@tools:sample/avatars" />
-            </LinearLayout>
-
-            <LinearLayout
-                android:layout_width="match_parent"
+            <ImageView
+                android:id="@+id/author_img"
+                android:layout_width="0dp"
                 android:layout_height="match_parent"
                 android:layout_weight="1"
-                android:orientation="horizontal">
+                tools:srcCompat="@tools:sample/avatars" />
+
+            <LinearLayout
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center"
+                android:layout_marginStart="30dp"
+                android:layout_weight="1"
+                android:orientation="vertical">
 
                 <TextView
                     android:id="@+id/book_authorname1"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
-                    android:layout_marginLeft="50dp"
-                    android:layout_marginTop="50dp"
-                    android:gravity="center"
+                    android:gravity="start"
                     android:text="作者"
-                    android:textSize="20dp"
+                    android:textSize="20sp"
                     android:textStyle="bold" />
+
             </LinearLayout>
 
         </LinearLayout>
 
         <LinearLayout
             android:layout_width="match_parent"
-            android:layout_height="30dp"
-            android:orientation="horizontal">
+            android:layout_height="wrap_content"
+            android:orientation="vertical">
+
             <TextView
                 android:layout_width="match_parent"
-                android:layout_height="match_parent"
-                android:layout_marginLeft="5dp"
-                android:textSize="15dp"
-                android:textStyle="italic"
-                android:text="简介">
-            </TextView>
-        </LinearLayout>
+                android:layout_height="wrap_content"
+                android:layout_marginStart="5dp"
+                android:text="简介"
+                android:textSize="15sp"
+                android:textStyle="italic" />
 
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="100dp"
-            android:layout_alignParentTop="true">
-
-            <include layout="@layout/expandable" />
-
-        </LinearLayout>
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="30dp"
-            android:orientation="horizontal">
             <TextView
+                android:id="@+id/author_intro"
                 android:layout_width="match_parent"
-                android:layout_height="match_parent"
-                android:layout_marginLeft="5dp"
-                android:textSize="15dp"
-                android:textStyle="italic"
-                android:text="作品">
-            </TextView>
+                android:layout_height="wrap_content"
+                android:layout_marginStart="5dp"
+                android:text="详情：1111111111111111"
+                android:textSize="15sp"
+                android:textStyle="italic" />
+
         </LinearLayout>
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="5dp"
+            android:layout_marginTop="10dp"
+            android:text="作品"
+            android:textSize="15sp"
+            android:textStyle="italic" />
+
         <androidx.recyclerview.widget.RecyclerView
-            android:id="@+id/recyclerView1"
+            android:id="@+id/authorwork_recyclerView"
             android:layout_width="match_parent"
-            android:layout_height="match_parent" />
+            android:layout_height="wrap_content" />
 
     </LinearLayout>
-</RelativeLayout>
\ No newline at end of file
+
+</ScrollView>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_bookshelf.xml b/app/src/main/res/layout/activity_bookshelf.xml
index 7d3aef0..05315e9 100644
--- a/app/src/main/res/layout/activity_bookshelf.xml
+++ b/app/src/main/res/layout/activity_bookshelf.xml
@@ -5,38 +5,149 @@
     android:id="@+id/drawerLayout_bookshelf"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
-
-    <androidx.constraintlayout.widget.ConstraintLayout
+<LinearLayout
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical">
+    <LinearLayout
+        android:id="@+id/default_title"
         android:layout_width="match_parent"
-        android:layout_height="match_parent">
-
-        <!-- SwipeRefreshLayout 包裹的 RecyclerView -->
-        <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
-            android:id="@+id/swipeRefresh2"
-            android:layout_width="0dp"
-            android:layout_height="0dp"
-            app:layout_constraintTop_toTopOf="parent"
-            app:layout_constraintBottom_toTopOf="@+id/layout_bottom_navigation"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintEnd_toEndOf="parent"
-            android:background="@drawable/wenli">
-
-            <androidx.recyclerview.widget.RecyclerView
-                android:id="@+id/recyclerView2"
-                android:layout_width="match_parent"
-                android:layout_height="match_parent" />
-        </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
-
-        <!-- 底部导航栏 -->
-        <include
-            android:id="@+id/layout_bottom_navigation"
-            layout="@layout/layout_bottom_navigation"
+        android:layout_height="35dp"
+        android:layout_marginTop="10dp"
+        android:orientation="horizontal"
+        android:gravity="center_vertical">
+        <TextView
             android:layout_width="0dp"
             android:layout_height="wrap_content"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintEnd_toEndOf="parent" />
+            android:layout_weight="1"
+            android:text="书架"
+            android:layout_marginStart="10dp"
+            android:textSize="16sp"
+            android:textStyle="bold" />
+        <View
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:layout_weight="1" />
+        <ImageView
+            android:layout_width="wrap_content"
+            android:layout_height="30dp"
+            app:srcCompat="@drawable/select" />
+        <TextView
+            android:id="@+id/bookshelf_select"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginEnd="20dp"
+            android:text="选择"
+            android:textSize="16sp"
+            android:textStyle="bold" />
+    </LinearLayout>
 
-    </androidx.constraintlayout.widget.ConstraintLayout>
+        <LinearLayout
+            android:id="@+id/selected_title"
+            android:layout_width="match_parent"
+            android:layout_height="35dp"
+            android:layout_marginTop="10dp"
+            android:orientation="horizontal"
+            android:gravity="center_vertical"
+            android:visibility="gone">
+            <TextView
+                android:id="@+id/select_all"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="10dp"
+                android:text="全选"
+                android:textSize="16sp"
+                android:textStyle="bold" />
+            <View
+                android:layout_width="0dp"
+                android:layout_height="0dp"
+                android:layout_weight="1" />
+            <TextView
+                android:id="@+id/select_books"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="选择书籍"
+                android:textSize="16sp"
+                android:textStyle="bold" />
+            <View
+                android:layout_width="0dp"
+                android:layout_height="0dp"
+                android:layout_weight="1" />
+            <TextView
+                android:id="@+id/bookshelf_cancel"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginEnd="20dp"
+                android:text="取消"
+                android:textSize="16sp"
+                android:textStyle="bold" />
+        </LinearLayout>
 
+        <View
+            android:layout_width="match_parent"
+            android:layout_height="1dp"
+            android:background="#CCCCCC"
+            android:layout_marginStart="10dp"
+            android:layout_marginEnd="10dp"
+            android:layout_marginTop="10dp" />
+        <androidx.constraintlayout.widget.ConstraintLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+
+            <!-- SwipeRefreshLayout 包裹的 RecyclerView -->
+            <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+                android:id="@+id/bookshelf_swipeRefresh"
+                android:layout_width="0dp"
+                android:layout_height="0dp"
+                app:layout_constraintTop_toTopOf="parent"
+                app:layout_constraintBottom_toTopOf="@+id/bookshelf_layout_bottom_navigation"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintEnd_toEndOf="parent">
+
+                <androidx.recyclerview.widget.RecyclerView
+                    android:id="@+id/bookshelf_recyclerView"
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent" />
+            </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+
+            <!-- 底部导航栏 -->
+            <include
+                android:id="@+id/bookshelf_layout_bottom_navigation"
+                layout="@layout/layout_bottom_navigation"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                app:layout_constraintBottom_toBottomOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintEnd_toEndOf="parent" />
+            <LinearLayout
+                android:id="@+id/selected_bottom_navigation"
+                android:layout_width="match_parent"
+                android:layout_height="60dp"
+                android:orientation="horizontal"
+                app:layout_constraintBottom_toBottomOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintEnd_toEndOf="parent"
+                android:visibility="gone"
+                android:gravity="center"
+                android:background="#EEEEEE">
+
+                <ImageView
+                    android:layout_width="40dp"
+                    android:layout_height="40dp"
+                    app:srcCompat="@drawable/remove" />
+
+                <TextView
+                    android:id="@+id/removeFromBookshelf"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:textSize="18sp"
+                    android:text="移除书架"
+                    android:layout_marginStart="8dp"
+                    android:onClick="onRemoveFromBookshelfClicked" />
+
+            </LinearLayout>
+
+        </androidx.constraintlayout.widget.ConstraintLayout>
+
+    </LinearLayout>
 </androidx.drawerlayout.widget.DrawerLayout>
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 2801a13..723b403 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -50,8 +50,8 @@
                             android:layout_width="match_parent"
                             android:layout_height="wrap_content"
                             android:layout_marginLeft="10dp"
-                            android:layout_marginTop="10dp"
-                            android:text="简书榜单"
+                            android:layout_marginTop="65dp"
+                            android:text="一周好书榜"
                             android:textSize="18sp"
                             android:textStyle="bold" />
 
diff --git a/app/src/main/res/layout/activity_sendperception.xml b/app/src/main/res/layout/activity_sendperception.xml
index 2f30a71..e14a529 100644
--- a/app/src/main/res/layout/activity_sendperception.xml
+++ b/app/src/main/res/layout/activity_sendperception.xml
@@ -7,13 +7,11 @@
     android:orientation="vertical">
 
     <Button
-        android:id="@+id/delete"
+        android:id="@+id/send_return"
         android:layout_width="35dp"
         android:layout_height="35dp"
         android:layout_margin="5dp"
-        android:background="@drawable/delete"
-        android:text="Back"
-        android:textColor="#fff" />
+        android:background="@drawable/return1" />
 
     <TextView
         android:id="@+id/textView7"
@@ -43,7 +41,7 @@
                 android:orientation="horizontal">
 
                 <ImageView
-                    android:id="@+id/touxiang"
+                    android:id="@+id/send_avatar"
                     android:layout_width="30dp"
                     android:layout_height="37dp"
                     tools:srcCompat="@tools:sample/avatars" />
diff --git a/app/src/main/res/layout/book_author_item.xml b/app/src/main/res/layout/book_author_item.xml
index bd8dc29..1b7b072 100644
--- a/app/src/main/res/layout/book_author_item.xml
+++ b/app/src/main/res/layout/book_author_item.xml
@@ -8,10 +8,11 @@
     android:layout_margin="2dp">
 
     <ImageView
-        android:id="@+id/book_Image1"
-        android:layout_width="135dp"
-        android:layout_height="180dp"
+        android:id="@+id/authorwork_img"
+        android:layout_width="120dp"
+        android:layout_height="160dp"
         android:layout_gravity="center_vertical"
+        android:scaleType="centerCrop"
         android:layout_marginLeft="10dp" />
 
     <LinearLayout
@@ -30,7 +31,5 @@
             android:textSize="13dp"
             app:srcCompat="@drawable/addtobookshelf"
             tools:ignore="TouchTargetSizeCheck" />
-
-
     </LinearLayout>
 </LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/bookpic_item.xml b/app/src/main/res/layout/bookpic_item.xml
index 0dc4dfc..a1523b9 100644
--- a/app/src/main/res/layout/bookpic_item.xml
+++ b/app/src/main/res/layout/bookpic_item.xml
@@ -9,7 +9,7 @@
     android:layout_margin="2dp">
 
     <ImageView
-        android:id="@+id/book_Image2"
+        android:id="@+id/send_bookimg"
         android:layout_width="120dp"
         android:layout_height="160dp"
         android:scaleType="centerCrop"
@@ -23,7 +23,7 @@
         android:orientation="vertical">
 
         <TextView
-            android:id="@+id/book_name"
+            android:id="@+id/send_bookname"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_gravity="center"
diff --git a/app/src/main/res/layout/bookshelf_item.xml b/app/src/main/res/layout/bookshelf_item.xml
index 2297a45..ff9ecd6 100644
--- a/app/src/main/res/layout/bookshelf_item.xml
+++ b/app/src/main/res/layout/bookshelf_item.xml
@@ -6,37 +6,41 @@
     android:layout_height="wrap_content"
     android:layout_margin="10dp"
     app:cardCornerRadius="4dp">
-<LinearLayout
-    android:orientation="vertical"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content">
-
-<!--    <CheckBox-->
-<!--        android:id="@+id/bookshelf_checkBox"-->
-<!--        android:layout_width="match_parent"-->
-<!--        android:layout_height="30dp"-->
-<!--        android:focusableInTouchMode="false"-->
-<!--        android:visibility="invisible"-->
-<!--        android:gravity="center" />-->
-
-    <ImageView
-        android:id="@+id/bookshelf_bkimg"
-        android:layout_width="match_parent"
-        android:layout_height="180dp"
-        android:scaleType="centerCrop"/>
 
     <LinearLayout
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:orientation="horizontal"></LinearLayout>
-
-    <TextView
-        android:id="@+id/bookshelf_bkname"
-        android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_gravity="center_horizontal"
-        android:layout_margin="5dp"
-        android:textSize="16sp"/>
+        android:orientation="vertical">
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="180dp">
+
+            <ImageView
+                android:id="@+id/bookshelf_bkimg"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:scaleType="centerCrop" />
+
+            <ImageView
+                android:id="@+id/bookshelf_select_icon"
+                android:layout_width="30dp"
+                android:layout_height="30dp"
+                android:layout_gravity="bottom|end"
+                android:layout_margin="8dp"
+                android:src="@drawable/select"
+                android:visibility="gone" />
+
+        </FrameLayout>
+
+        <TextView
+            android:id="@+id/bookshelf_bkname"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center_horizontal"
+            android:layout_margin="5dp"
+            android:textSize="16sp" />
+
+    </LinearLayout>
 
-</LinearLayout>
 </com.google.android.material.card.MaterialCardView>
\ No newline at end of file
diff --git a/app/src/main/res/layout/delete_dialog.xml b/app/src/main/res/layout/delete_dialog.xml
new file mode 100644
index 0000000..00f57d1
--- /dev/null
+++ b/app/src/main/res/layout/delete_dialog.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <TextView
+        android:id="@+id/dialog_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="是否移除书架?"
+        android:textSize="18sp"
+        android:textStyle="bold" />
+
+    <TextView
+        android:id="@+id/dialog_message"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:text="您确定要将该书移出书架吗?"
+        android:textSize="16sp" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:gravity="end"
+        android:orientation="horizontal">
+
+        <Button
+            android:id="@+id/dialog_cancel"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="取消" />
+
+        <Button
+            android:id="@+id/dialog_remove"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="8dp"
+            android:text="移除" />
+
+    </LinearLayout>
+
+</LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/test11.xml b/app/src/main/res/layout/test11.xml
deleted file mode 100644
index 41d281c..0000000
--- a/app/src/main/res/layout/test11.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="fill_parent"
-    android:layout_height="fill_parent"
-    android:orientation="vertical" >
-
-    <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/recyclerView100"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"/>
-
-</LinearLayout>
\ No newline at end of file