...

app/src/main/java/com/base/datarecovery/activity/FileRecoveryActivity.kt

 package com.base.datarecovery.activity
 
 import android.annotation.SuppressLint
-import android.graphics.Bitmap
 import android.graphics.BitmapFactory
 import android.graphics.Color
 import android.view.View
@@ -16,7 +15,6 @@ import com.base.datarecovery.help.KotlinExt.toFormatTime
 import com.base.datarecovery.utils.BarUtils
 import com.google.gson.Gson
 import java.io.File
-import java.text.SimpleDateFormat
 
 class FileRecoveryActivity : BaseActivity<ActivityFileRecoveryBinding>() {
 
@@ -27,7 +25,6 @@ class FileRecoveryActivity : BaseActivity<ActivityFileRecoveryBinding>() {
 
     private var folderBean: FolderBean? = null
     private lateinit var adapter: FileMediaColumnsAdapter
-    private val timeList = arrayListOf<FolderBean>()
 
     @SuppressLint("SetTextI18n")
     override fun initView() {
@@ -61,9 +58,12 @@ class FileRecoveryActivity : BaseActivity<ActivityFileRecoveryBinding>() {
 
 
         }
-        adapter = FileMediaColumnsAdapter(2) { all ->
-            binding.ivSelectAll.isSelected = all
-        }
+        adapter = FileMediaColumnsAdapter(2,
+            select = { all, size ->
+                binding.ivSelectAll.isSelected = all
+                binding.tvRecover.text = "Recover($size)"
+                binding.tvRecover.isEnabled = size > 0
+            })
         binding.rv.adapter = adapter
 
         initData()
@@ -82,7 +82,7 @@ class FileRecoveryActivity : BaseActivity<ActivityFileRecoveryBinding>() {
             adapter.toggleThumbnails(isChecked)
         }
         binding.ivSelectAll.setOnClickListener {
-            binding.ivSelectAll.isSelected=!binding.ivSelectAll.isSelected
+            binding.ivSelectAll.isSelected = !binding.ivSelectAll.isSelected
             adapter.toggleAllSelect(binding.ivSelectAll.isSelected)
         }
     }

app/src/main/java/com/base/datarecovery/adapter/FileMediaColumnsAdapter.kt

 package com.base.datarecovery.adapter
 
 import android.annotation.SuppressLint
-import android.graphics.Bitmap
-import android.graphics.drawable.Drawable
 import android.view.View
 import android.view.ViewGroup
 import android.widget.ImageView
@@ -17,13 +15,11 @@ import com.base.datarecovery.databinding.ItemMediaBinding
 import com.base.datarecovery.help.KotlinExt.toFormatSize
 import com.base.datarecovery.view.XmlEx.inflate
 import com.bumptech.glide.Glide
-import com.bumptech.glide.request.target.CustomTarget
-import com.bumptech.glide.request.transition.Transition
 import java.io.File
 
 class FileMediaColumnsAdapter(
     val columns: Int,
-    val allSelect: (all: Boolean) -> Unit,
+    val select: (all: Boolean, size: Int) -> Unit,
 ) : RecyclerView.Adapter<FileMediaColumnsAdapter.MCV>() {
 
     private val beanList = arrayListOf<FolderBean>()
@@ -52,7 +48,12 @@ class FileMediaColumnsAdapter(
         binding.rvMediaColumns.layoutManager = GridLayoutManager(context, columns)
         binding.rvMediaColumns.adapter = subAdapter
         val list = if (hideThumbnails) bean.recoveryList.filter { !it.isThumbnails } else bean.recoveryList
-        subAdapter.setData(list)
+        if (list.isEmpty()) {
+            binding.flTittle.visibility = View.GONE
+        } else {
+            binding.flTittle.visibility = View.VISIBLE
+            subAdapter.setData(list)
+        }
 
         binding.ivSelector.setOnClickListener {
             bean.isSelect = !bean.isSelect
@@ -149,14 +150,16 @@ class FileMediaColumnsAdapter(
             }
         }
         val all = beanList.all { it.isSelect }
-        allSelect.invoke(all)
+        val size = beanList.sumOf { it.recoveryList.filter { bean -> bean.isSelect }.size }
+        select.invoke(all, size)
     }
 
     private fun itemClick(isSelect: Boolean, subAdapter: MediaColumnsAdapter) {
         subAdapter.toggleSelect(isSelect)
 
         val all = beanList.all { it.isSelect }
-        allSelect.invoke(all)
+        val size = beanList.sumOf { it.recoveryList.filter { bean -> bean.isSelect }.size }
+        select.invoke(all, size)
     }
 
     @SuppressLint("NotifyDataSetChanged")
@@ -165,6 +168,7 @@ class FileMediaColumnsAdapter(
         notifyDataSetChanged()
     }
 
+    @SuppressLint("NotifyDataSetChanged")
     fun toggleAllSelect(selected: Boolean) {
         beanList.forEach {
             it.isSelect = selected

app/src/main/java/com/base/datarecovery/view/PopupWindowViews.kt

+package com.base.datarecovery.view
+
+object PopupWindowViews {
+
+}
\ No newline at end of file

app/src/main/res/drawable/bg_recover_enable.xml

+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@drawable/bg_stroke_bfbec4_15" android:state_enabled="false" />
+    <item android:drawable="@drawable/bg_stroke_black_15" android:state_enabled="true" />
+</selector>
\ No newline at end of file

app/src/main/res/drawable/bg_stroke_black_15.xml

+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <stroke
+        android:width="1dp"
+        android:color="@color/black" />
+    <corners android:radius="15dp" />
+</shape>
\ No newline at end of file

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

@@ -49,7 +49,8 @@
                 android:layout_height="wrap_content"
                 android:layout_gravity="center_vertical"
                 android:layout_marginEnd="24dp"
-                android:background="@drawable/bg_stroke_bfbec4_15"
+                android:background="@drawable/bg_recover_enable"
+                android:enabled="false"
                 android:paddingHorizontal="18dp"
                 android:paddingVertical="8dp"
                 android:text="Recover (0)"
@@ -155,6 +156,44 @@
 
     </androidx.constraintlayout.widget.ConstraintLayout>
 
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginHorizontal="16dp"
+        android:background="@color/white"
+        android:orientation="horizontal"
+        android:paddingTop="20dp"
+        android:paddingBottom="10dp"
+        app:layout_scrollFlags="scroll|enterAlways">
+
+        <ImageView
+            android:id="@+id/iv_select_all"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center_vertical"
+            android:src="@drawable/b_circle_selector"
+            tools:ignore="ContentDescription" />
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center_vertical"
+            android:layout_marginStart="8dp"
+            android:layout_weight="1"
+            android:text="Select all"
+            android:textColor="@color/black"
+            android:textSize="18sp"
+            android:textStyle="bold"
+            tools:ignore="HardcodedText" />
+
+        <ImageView
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_gravity="center_vertical"
+            android:src="@mipmap/qiehuan"
+            tools:ignore="ContentDescription" />
+    </LinearLayout>
+
     <androidx.coordinatorlayout.widget.CoordinatorLayout
         android:layout_width="match_parent"
         android:layout_height="match_parent">
@@ -164,47 +203,13 @@
             android:layout_height="wrap_content"
             android:orientation="vertical">
 
-            <LinearLayout
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_marginHorizontal="15dp"
-                android:orientation="horizontal"
-                android:paddingVertical="20dp"
-                app:layout_scrollFlags="scroll|enterAlways">
-
-                <ImageView
-                    android:id="@+id/iv_select_all"
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:layout_gravity="center_vertical"
-                    android:src="@drawable/b_circle_selector"
-                    tools:ignore="ContentDescription" />
-
-                <TextView
-                    android:layout_width="0dp"
-                    android:layout_height="wrap_content"
-                    android:layout_gravity="center_vertical"
-                    android:layout_marginStart="8dp"
-                    android:layout_weight="1"
-                    android:text="Select all"
-                    android:textColor="@color/black"
-                    android:textSize="18sp"
-                    android:textStyle="bold"
-                    tools:ignore="HardcodedText" />
-
-                <ImageView
-                    android:layout_width="wrap_content"
-                    android:layout_height="match_parent"
-                    android:layout_gravity="center_vertical"
-                    android:src="@mipmap/qiehuan"
-                    tools:ignore="ContentDescription" />
-            </LinearLayout>
 
             <androidx.constraintlayout.widget.ConstraintLayout
                 android:id="@+id/cl_thumbnails"
                 android:layout_width="match_parent"
                 android:layout_height="80dp"
                 android:layout_marginHorizontal="16dp"
+                android:background="@color/white"
                 android:minHeight="80dp"
                 app:layout_scrollFlags="scroll|enterAlways">
 
@@ -212,6 +217,7 @@
                     android:id="@+id/tv_thumbnails"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
+                    android:layout_marginTop="10dp"
                     android:textColor="@color/black"
                     android:textSize="16sp"
                     android:textStyle="bold"
@@ -243,15 +249,14 @@
                     app:layout_constraintTop_toBottomOf="@id/tv_thumbnails"
                     tools:ignore="UseSwitchCompatOrMaterialXml" />
 
-
+                <View
+                    android:layout_width="match_parent"
+                    android:layout_height="1px"
+                    android:layout_marginBottom="3dp"
+                    android:background="#D4D4D4"
+                    app:layout_constraintBottom_toBottomOf="parent" />
             </androidx.constraintlayout.widget.ConstraintLayout>
 
-            <View
-                android:layout_width="match_parent"
-                android:layout_height="1px"
-                android:layout_marginHorizontal="16dp"
-                android:background="#D4D4D4"
-                app:layout_constraintBottom_toBottomOf="parent" />
         </com.google.android.material.appbar.AppBarLayout>
 
         <androidx.recyclerview.widget.RecyclerView

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

@@ -7,6 +7,7 @@
     android:orientation="vertical">
 
     <FrameLayout
+        android:id="@+id/fl_tittle"
         android:layout_width="match_parent"
         android:layout_height="wrap_content">