添加多选模式界面。

app/src/main/java/com/all/pdfreader/pro/app/model/FragmentConfig.kt

@@ -0,0 +1,5 @@
+package com.all.pdfreader.pro.app.model
+
+enum class FragmentType {
+    HOME, RECENTLY, FAVORITE
+}

app/src/main/java/com/all/pdfreader/pro/app/room/entity/PdfDocumentEntity.kt

@@ -33,5 +33,6 @@ data class PdfDocumentEntity(
     val metadataModificationDate: Long? = null, // PDF修改时间
 
     val password: String? = null,// PDF密码（加密存储）
-    val isPassword: Boolean = false//是否存在密码
+    val isPassword: Boolean = false,//是否存在密码
+    var isSelected: Boolean = false
 ) : Parcelable

app/src/main/java/com/all/pdfreader/pro/app/ui/act/MainActivity.kt

@@ -11,6 +11,8 @@ import com.all.pdfreader.pro.app.PRApp
 import com.all.pdfreader.pro.app.R
 import com.all.pdfreader.pro.app.databinding.ActivityMainBinding
 import com.all.pdfreader.pro.app.model.FileActionEvent
+import com.all.pdfreader.pro.app.model.FragmentType
+import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
 import com.all.pdfreader.pro.app.ui.dialog.PermissionDialogFragment
 import com.all.pdfreader.pro.app.ui.dialog.ProgressDialogFragment
 import com.all.pdfreader.pro.app.ui.dialog.SortDialogFragment
@@ -27,25 +29,23 @@ import com.gyf.immersionbar.ImmersionBar
 import kotlinx.coroutines.launch
 
 class MainActivity : BaseActivity(), PermissionDialogFragment.PermissionCallback,
-    PermissionDialogFragment.CloseCallback {
+    PermissionDialogFragment.CloseCallback, HomeFrag.OnItemLongClickListener,
+    RecentlyFrag.OnItemLongClickListener, FavoriteFrag.OnItemLongClickListener {
 
     override val TAG: String = "MainActivity"
 
     private lateinit var binding: ActivityMainBinding
     private val pdfRepository = getRepository()
     private lateinit var pdfScanner: PdfScanner
-
     private val homeFragment = HomeFrag()
     private val recentlyFragment = RecentlyFrag()
     private val favoriteFragment = FavoriteFrag()
     private val toolsFragment = ToolsFrag()
-
     private var activeFragment: Fragment = homeFragment
     private val fragmentTag = "ACTIVE_FRAGMENT"
-
     private val viewModel by lazy { ViewModelProvider(this)[PdfViewModel::class.java] }
-
     private var progressDialog: ProgressDialogFragment? = null
+    private var fragmentType = FragmentType.HOME
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -67,6 +67,7 @@ class MainActivity : BaseActivity(), PermissionDialogFragment.PermissionCallback
             supportFragmentManager.beginTransaction().hide(homeFragment).hide(recentlyFragment)
                 .hide(favoriteFragment).hide(toolsFragment).show(activeFragment).commit()
         }
+        updateMultiSelectUi(false, fragmentType)
     }
 
     private fun initObserve() {
@@ -170,6 +171,35 @@ class MainActivity : BaseActivity(), PermissionDialogFragment.PermissionCallback
                 (activeFragment as? SortableFragment)?.onSortTypeChanged(it)
             }).show(supportFragmentManager, TAG)
         }
+        binding.multiSelectBackBtn.setOnClickListener {
+            homeFragment.exitMultiSelectMode()
+            favoriteFragment.exitMultiSelectMode()
+            recentlyFragment.exitMultiSelectMode()
+            updateMultiSelectUi(false, fragmentType)
+        }
+        binding.multiSelectAllBtn.setOnClickListener {
+            homeFragment.adapter.toggleSelectAll()
+            val isAllSelected = homeFragment.adapter.isAllSelected()
+            if (isAllSelected) {
+                binding.multiSelectAllIv.setBackgroundResource(R.drawable.dr_circular_sel_on_bg) // 已全选图标
+            } else {
+                binding.multiSelectAllIv.setBackgroundResource(R.drawable.dr_circular_sel_off_bg) // 未全选图标
+            }
+            updateSelectNumber(homeFragment.adapter.getSelectedItems().size)
+        }
+        binding.multiSelectDeleteBtn.setOnClickListener {
+            val selectedItems = homeFragment.adapter.getSelectedItems()
+            logDebug("selectedItems->${selectedItems.size}")
+        }
+        binding.multiSelectMergeBtn.setOnClickListener {
+            logDebug("合并")
+        }
+        binding.multiSelectRemoveBtn.setOnClickListener {
+            logDebug("移除最新阅读")
+        }
+        binding.multiSelectUnFavoriteBtn.setOnClickListener {
+            logDebug("移除收藏")
+        }
     }
 
     private fun switchFragment(target: Fragment) {
@@ -229,25 +259,6 @@ class MainActivity : BaseActivity(), PermissionDialogFragment.PermissionCallback
                 binding.toolsIv.setImageResource(R.drawable.icon_tools_sel_on)
             }
         }
-
-
-//        binding.homeIv.alpha = 0.5f
-//        binding.recentlyIv.alpha = 0.5f
-//        binding.favoriteIv.alpha = 0.5f
-//        binding.toolsIv.alpha = 0.5f
-//        val targetIcon = when (fragment) {
-//            is HomeFrag -> binding.homeIv
-//            is RecentlyFrag -> binding.recentlyIv
-//            is FavoriteFrag -> binding.favoriteIv
-//            is ToolsFrag -> binding.toolsIv
-//            else -> null
-//        }
-//        targetIcon?.apply {
-//            alpha = 1f
-//            animate().scaleX(1.2f).scaleY(1.2f).setDuration(150).withEndAction {
-//                animate().scaleX(1f).scaleY(1f).setDuration(150).start()
-//            }.start()
-//        }
     }
 
 
@@ -283,21 +294,6 @@ class MainActivity : BaseActivity(), PermissionDialogFragment.PermissionCallback
         } else {
             logDebug("❌ 权限不足，跳过扫描")
         }
-
-//        // 智能扫描策略
-//        if (pdfScanner.shouldScan()) {
-//            logDebug("🔄 需要扫描PDF文件 (首次启动或超过24小时)")
-//            if (StoragePermissionHelper.hasBasicStoragePermission(this)) {
-//                lifecycleScope.launch {
-//                    pdfScanner.scanAndLoadPdfFiles()
-//                }
-//            } else {
-//                logDebug("❌ 权限不足，跳过扫描")
-//            }
-//        } else {
-//            val hoursAgo = pdfScanner.getHoursSinceLastScan()
-//            logDebug("⏭️ 跳过扫描，上次扫描在${hoursAgo}小时前")
-//        }
     }
 
     // 授权后续操作
@@ -337,4 +333,79 @@ class MainActivity : BaseActivity(), PermissionDialogFragment.PermissionCallback
                 onClose()
             }
         }
+
+    override fun onItemLongClicked(item: PdfDocumentEntity, type: FragmentType) {
+        fragmentType = type
+        updateMultiSelectUi(true, fragmentType)
+        updateSelectNumber(homeFragment.adapter.getSelectedItems().size)
+    }
+
+    private fun updateMultiSelectUi(b: Boolean, type: FragmentType) {
+        if (b) {
+            binding.apply {
+                multiSelectTopLayout.visibility = View.VISIBLE
+                multiSelectBottomLayout.visibility = View.VISIBLE
+                navigationLayout.visibility = View.GONE
+                topLayout.visibility = View.GONE
+            }
+            when (type) {
+                FragmentType.HOME -> {
+                    binding.multiSelectRemoveBtn.visibility = View.GONE
+                    binding.multiSelectUnFavoriteBtn.visibility = View.GONE
+                }
+
+                FragmentType.RECENTLY -> {
+                    binding.multiSelectRemoveBtn.visibility = View.VISIBLE
+                    binding.multiSelectUnFavoriteBtn.visibility = View.GONE
+                }
+
+                FragmentType.FAVORITE -> {
+                    binding.multiSelectRemoveBtn.visibility = View.GONE
+                    binding.multiSelectUnFavoriteBtn.visibility = View.VISIBLE
+                }
+            }
+        } else {
+            binding.apply {
+                multiSelectTopLayout.visibility = View.GONE
+                multiSelectBottomLayout.visibility = View.GONE
+                navigationLayout.visibility = View.VISIBLE
+                topLayout.visibility = View.VISIBLE
+            }
+        }
+    }
+
+    fun updateSelectNumber(number: Int) {
+        binding.multiSelectNumberTv.text = getString(R.string.selected_page, number)
+        if (number >= 1) {
+            binding.multiSelectDeleteIv.setImageResource(R.drawable.icon_delete_sel_on)
+            binding.multiSelectDeleteTv.setTextColor(getColor(R.color.black))
+            binding.multiSelectDeleteBtn.isClickable = true
+            binding.multiSelectRemoveIv.setImageResource(R.drawable.icon_remove_sel_on)
+            binding.multiSelectRemoveTv.setTextColor(getColor(R.color.black))
+            binding.multiSelectRemoveBtn.isClickable = true
+            binding.multiSelectUnFavoriteIv.setImageResource(R.drawable.icon_un_favorite_sel_on)
+            binding.multiSelectUnFavoriteTv.setTextColor(getColor(R.color.black))
+            binding.multiSelectUnFavoriteBtn.isClickable = true
+        } else {
+            binding.multiSelectDeleteIv.setImageResource(R.drawable.icon_delete_sel_off)
+            binding.multiSelectDeleteTv.setTextColor(getColor(R.color.icon_sel_off_color))
+            binding.multiSelectDeleteBtn.isClickable = false
+            binding.multiSelectRemoveIv.setImageResource(R.drawable.icon_remove_sel_off)
+            binding.multiSelectRemoveTv.setTextColor(getColor(R.color.icon_sel_off_color))
+            binding.multiSelectRemoveBtn.isClickable = false
+            binding.multiSelectUnFavoriteIv.setImageResource(R.drawable.icon_un_favorite_sel_off)
+            binding.multiSelectUnFavoriteTv.setTextColor(getColor(R.color.icon_sel_off_color))
+            binding.multiSelectUnFavoriteBtn.isClickable = false
+        }
+
+        if (number >= 2) {
+            binding.multiSelectMergeIv.setImageResource(R.drawable.icon_merge_sel_on)
+            binding.multiSelectMergeTv.setTextColor(getColor(R.color.black))
+            binding.multiSelectMergeBtn.isClickable = true
+        } else {
+            binding.multiSelectMergeIv.setImageResource(R.drawable.icon_merge_sel_off)
+            binding.multiSelectMergeTv.setTextColor(getColor(R.color.icon_sel_off_color))
+            binding.multiSelectMergeBtn.isClickable = false
+        }
+    }
 }

app/src/main/java/com/all/pdfreader/pro/app/ui/adapter/PdfAdapter.kt

@@ -7,6 +7,7 @@ import android.view.ViewGroup
 import androidx.recyclerview.widget.RecyclerView
 import com.all.pdfreader.pro.app.databinding.AdapterPdfItemBinding
 import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
+import com.all.pdfreader.pro.app.ui.act.MainActivity
 import com.all.pdfreader.pro.app.util.AppUtils.dpToPx
 import com.all.pdfreader.pro.app.util.FileUtils.toFormatFileSize
 import com.all.pdfreader.pro.app.util.FileUtils.toSlashDate
@@ -17,8 +18,11 @@ import com.bumptech.glide.load.resource.bitmap.RoundedCorners
 class PdfAdapter(
     private var pdfList: MutableList<PdfDocumentEntity>,
     private val onItemClick: (PdfDocumentEntity) -> Unit,
-    private val onMoreClick: (PdfDocumentEntity) -> Unit
+    private val onMoreClick: (PdfDocumentEntity) -> Unit,
+    private val onLongClick: (PdfDocumentEntity) -> Unit,
+    private val onSelectModelItemClick: (Int) -> Unit = {}
 ) : RecyclerView.Adapter<PdfAdapter.PdfViewHolder>() {
+    private var isMultiSelectMode = false
 
     inner class PdfViewHolder(val binding: AdapterPdfItemBinding) :
         RecyclerView.ViewHolder(binding.root)
@@ -29,7 +33,7 @@ class PdfAdapter(
         return PdfViewHolder(binding)
     }
 
-    @SuppressLint("SetTextI18n")
+    @SuppressLint("SetTextI18n", "NotifyDataSetChanged")
     override fun onBindViewHolder(holder: PdfViewHolder, position: Int) {
         val item = pdfList[position]
         holder.binding.tvFileName.text = item.fileName
@@ -50,13 +54,40 @@ class PdfAdapter(
         } else {
             holder.binding.collectState.visibility = View.GONE
         }
+        if (isMultiSelectMode) {
+            holder.binding.checkBtn.visibility = View.VISIBLE
+            holder.binding.moreBtn.visibility = View.GONE
+        } else {
+            holder.binding.checkBtn.visibility = View.GONE
+            holder.binding.moreBtn.visibility = View.VISIBLE
+        }
+        holder.binding.checkbox.isChecked = item.isSelected
+
 
         holder.binding.root.setOnClickListener {
-            onItemClick(item)
+            if (isMultiSelectMode) {
+                item.isSelected = !item.isSelected
+                notifyItemChanged(position)
+                onSelectModelItemClick(getSelectedItems().size)
+            } else {
+                onItemClick(item)
+            }
         }
         holder.binding.moreBtn.setOnClickListener {
             onMoreClick(item)
         }
+        holder.binding.root.setOnLongClickListener {
+            if (!isMultiSelectMode) {
+                isMultiSelectMode = true
+                item.isSelected = !item.isSelected
+                notifyDataSetChanged()
+                onLongClick(item)
+            }
+            true
+        }
+        holder.binding.checkBtn.setOnClickListener {
+            toggleSelection(item, holder.bindingAdapterPosition)
+        }
     }
 
     override fun getItemCount(): Int = pdfList.size
@@ -67,4 +98,47 @@ class PdfAdapter(
         pdfList.addAll(newList)
         notifyDataSetChanged()
     }
+
+    private fun toggleSelection(item: PdfDocumentEntity, position: Int) {
+        item.isSelected = !item.isSelected
+        notifyItemChanged(position)
+    }
+
+    // 退出多选模式
+    @SuppressLint("NotifyDataSetChanged")
+    fun exitMultiSelectMode() {
+        isMultiSelectMode = false
+        pdfList.forEach { it.isSelected = false }
+        notifyDataSetChanged()
+    }
+
+    @SuppressLint("NotifyDataSetChanged")
+    fun toggleSelectAll() {
+        val allSelected = pdfList.all { it.isSelected }
+        if (allSelected) deselectAll() else selectAll()
+    }
+
+    // 全选
+    fun selectAll() {
+        pdfList.forEach { it.isSelected = true }
+        notifyDataSetChanged()
+    }
+
+    // 取消全选
+    fun deselectAll() {
+        pdfList.forEach { it.isSelected = false }
+        notifyDataSetChanged()
+    }
+
+    // 判断是否全选
+    fun isAllSelected(): Boolean = pdfList.isNotEmpty() && pdfList.all { it.isSelected }
+
+    // 获取已选中的 item
+    fun getSelectedItems(): List<PdfDocumentEntity> {
+        return pdfList.filter { it.isSelected }
+    }
+
+    fun getIsMultiSelectMode(): Boolean{
+        return isMultiSelectMode
+    }
 }

app/src/main/java/com/all/pdfreader/pro/app/ui/fragment/FavoriteFrag.kt

@@ -1,16 +1,19 @@
 package com.all.pdfreader.pro.app.ui.fragment
 
+import android.content.Context
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import androidx.fragment.app.Fragment
 import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.lifecycleScope
 import androidx.lifecycle.repeatOnLifecycle
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.all.pdfreader.pro.app.databinding.FragmentFavoriteBinding
+import com.all.pdfreader.pro.app.model.FragmentType
+import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
 import com.all.pdfreader.pro.app.room.repository.PdfRepository
+import com.all.pdfreader.pro.app.ui.act.MainActivity
 import com.all.pdfreader.pro.app.ui.act.PdfViewActivity
 import com.all.pdfreader.pro.app.ui.adapter.PdfAdapter
 import com.all.pdfreader.pro.app.ui.dialog.ListMoreDialogFragment
@@ -24,7 +27,13 @@ class FavoriteFrag : BaseFrag() {
     }
 
     private lateinit var binding: FragmentFavoriteBinding
-    private lateinit var adapter: PdfAdapter
+    lateinit var adapter: PdfAdapter
+
+    private var onItemLongClickListener: OnItemLongClickListener? = null
+
+    interface OnItemLongClickListener {
+        fun onItemLongClicked(item: PdfDocumentEntity, type: FragmentType)
+    }
 
     override fun onCreateView(
         inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?
@@ -40,11 +49,17 @@ class FavoriteFrag : BaseFrag() {
     }
 
     private fun initView() {
-        adapter = PdfAdapter(pdfList = mutableListOf(),onItemClick = { pdf ->
+        adapter = PdfAdapter(pdfList = mutableListOf(), onItemClick = { pdf ->
             val intent = PdfViewActivity.createIntent(requireContext(), pdf.filePath)
             startActivity(intent)
         }, onMoreClick = { pdf ->
             ListMoreDialogFragment(pdf.filePath).show(parentFragmentManager, FRAG_TAG)
+        }, onLongClick = { pdf ->
+            onItemLongClickListener?.onItemLongClicked(pdf, FragmentType.FAVORITE)
+            updateSwipeRefreshState()
+            (requireActivity() as? MainActivity)?.updateSelectNumber(adapter.getSelectedItems().size)
+        }, onSelectModelItemClick = { number ->
+            (requireActivity() as? MainActivity)?.updateSelectNumber(number)
         })
 
         binding.recyclerView.layoutManager = LinearLayoutManager(requireContext())
@@ -58,6 +73,15 @@ class FavoriteFrag : BaseFrag() {
         }
     }
 
+    fun updateSwipeRefreshState() {
+        binding.swipeRefreshLayout.isEnabled = !adapter.getIsMultiSelectMode()
+    }
+
+    fun exitMultiSelectMode() {
+        adapter.exitMultiSelectMode()
+        updateSwipeRefreshState()
+    }
+
     private fun observeDocuments(onComplete: () -> Unit = {}) {
         lifecycleScope.launch {
             viewLifecycleOwner.lifecycle.repeatOnLifecycle(Lifecycle.State.STARTED) {
@@ -73,4 +97,11 @@ class FavoriteFrag : BaseFrag() {
             }
         }
     }
+
+    override fun onAttach(context: Context) {
+        super.onAttach(context)
+        if (context is OnItemLongClickListener) {
+            onItemLongClickListener = context
+        }
+    }
 }

app/src/main/java/com/all/pdfreader/pro/app/ui/fragment/HomeFrag.kt

@@ -1,5 +1,6 @@
 package com.all.pdfreader.pro.app.ui.fragment
 
+import android.content.Context
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
@@ -9,6 +10,7 @@ import androidx.lifecycle.lifecycleScope
 import androidx.lifecycle.repeatOnLifecycle
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.all.pdfreader.pro.app.databinding.FragmentHomeBinding
+import com.all.pdfreader.pro.app.model.FragmentType
 import com.all.pdfreader.pro.app.model.SortConfig
 import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
 import com.all.pdfreader.pro.app.room.repository.PdfRepository
@@ -27,7 +29,13 @@ class HomeFrag : BaseFrag(), MainActivity.SortableFragment {
     }
 
     private lateinit var binding: FragmentHomeBinding
-    private lateinit var adapter: PdfAdapter
+    lateinit var adapter: PdfAdapter
+    private var onItemLongClickListener: OnItemLongClickListener? = null
+
+    interface OnItemLongClickListener {
+        fun onItemLongClicked(item: PdfDocumentEntity, type: FragmentType)
+    }
+
     override fun onCreateView(
         inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?
     ): View {
@@ -47,6 +55,12 @@ class HomeFrag : BaseFrag(), MainActivity.SortableFragment {
             startActivity(intent)
         }, onMoreClick = { pdf ->
             ListMoreDialogFragment(pdf.filePath).show(parentFragmentManager, FRAG_TAG)
+        }, onLongClick = { pdf ->
+            onItemLongClickListener?.onItemLongClicked(pdf, FragmentType.HOME)
+            updateSwipeRefreshState()
+            (requireActivity() as? MainActivity)?.updateSelectNumber(adapter.getSelectedItems().size)
+        }, onSelectModelItemClick = { number ->
+            (requireActivity() as? MainActivity)?.updateSelectNumber(number)
         })
 
         binding.recyclerView.layoutManager = LinearLayoutManager(requireContext())
@@ -63,6 +77,15 @@ class HomeFrag : BaseFrag(), MainActivity.SortableFragment {
         }
     }
 
+    fun updateSwipeRefreshState() {
+        binding.swipeRefreshLayout.isEnabled = !adapter.getIsMultiSelectMode()
+    }
+
+    fun exitMultiSelectMode() {
+        adapter.exitMultiSelectMode()
+        binding.swipeRefreshLayout.isEnabled = !adapter.getIsMultiSelectMode()
+    }
+
     override fun onSortTypeChanged(sortType: String) {
         // 排序类型改变时重新加载数据
         observeDocuments()
@@ -90,4 +113,11 @@ class HomeFrag : BaseFrag(), MainActivity.SortableFragment {
         return sortConfig.applySort(documents)
     }
 
+    override fun onAttach(context: Context) {
+        super.onAttach(context)
+        if (context is OnItemLongClickListener) {
+            onItemLongClickListener = context
+        }
+    }
+
 }

app/src/main/java/com/all/pdfreader/pro/app/ui/fragment/RecentlyFrag.kt

@@ -1,5 +1,6 @@
 package com.all.pdfreader.pro.app.ui.fragment
 
+import android.content.Context
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
@@ -9,7 +10,10 @@ import androidx.lifecycle.lifecycleScope
 import androidx.lifecycle.repeatOnLifecycle
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.all.pdfreader.pro.app.databinding.FragmentRecentlyBinding
+import com.all.pdfreader.pro.app.model.FragmentType
+import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
 import com.all.pdfreader.pro.app.room.repository.PdfRepository
+import com.all.pdfreader.pro.app.ui.act.MainActivity
 import com.all.pdfreader.pro.app.ui.act.PdfViewActivity
 import com.all.pdfreader.pro.app.ui.adapter.PdfAdapter
 import com.all.pdfreader.pro.app.ui.dialog.ListMoreDialogFragment
@@ -23,7 +27,12 @@ class RecentlyFrag : BaseFrag() {
     }
 
     private lateinit var binding: FragmentRecentlyBinding
-    private lateinit var adapter: PdfAdapter
+    lateinit var adapter: PdfAdapter
+    private var onItemLongClickListener: OnItemLongClickListener? = null
+
+    interface OnItemLongClickListener {
+        fun onItemLongClicked(item: PdfDocumentEntity, type: FragmentType)
+    }
 
     override fun onCreateView(
         inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?
@@ -39,11 +48,17 @@ class RecentlyFrag : BaseFrag() {
     }
 
     private fun initView() {
-        adapter = PdfAdapter(pdfList = mutableListOf(),onItemClick = { pdf ->
+        adapter = PdfAdapter(pdfList = mutableListOf(), onItemClick = { pdf ->
             val intent = PdfViewActivity.createIntent(requireContext(), pdf.filePath)
             startActivity(intent)
         }, onMoreClick = { pdf ->
             ListMoreDialogFragment(pdf.filePath).show(parentFragmentManager, FRAG_TAG)
+        }, onLongClick = { pdf ->
+            onItemLongClickListener?.onItemLongClicked(pdf, FragmentType.RECENTLY)
+            updateSwipeRefreshState()
+            (requireActivity() as? MainActivity)?.updateSelectNumber(adapter.getSelectedItems().size)
+        }, onSelectModelItemClick = { number ->
+            (requireActivity() as? MainActivity)?.updateSelectNumber(number)
         })
 
         binding.recyclerView.layoutManager = LinearLayoutManager(requireContext())
@@ -57,6 +72,15 @@ class RecentlyFrag : BaseFrag() {
         }
     }
 
+    fun updateSwipeRefreshState() {
+        binding.swipeRefreshLayout.isEnabled = !adapter.getIsMultiSelectMode()
+    }
+
+    fun exitMultiSelectMode() {
+        adapter.exitMultiSelectMode()
+        updateSwipeRefreshState()
+    }
+
     private fun observeDocuments(onComplete: () -> Unit = {}) {
         lifecycleScope.launch {
             viewLifecycleOwner.lifecycle.repeatOnLifecycle(Lifecycle.State.STARTED) {
@@ -72,4 +96,11 @@ class RecentlyFrag : BaseFrag() {
             }
         }
     }
+
+    override fun onAttach(context: Context) {
+        super.onAttach(context)
+        if (context is OnItemLongClickListener) {
+            onItemLongClickListener = context
+        }
+    }
 }

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

@@ -1,5 +1,13 @@
-<shape xmlns:android="http://schemas.android.com/apk/res/android"
+<?xml version="1.0" encoding="utf-8"?>
-    android:shape="rectangle">
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
-    <solid android:color="#F0F0F0"/>
+    android:color="#0D000000"> <!-- 系统默认点击高亮颜色 -->
-    <corners android:radius="12dp"/>
+
-</shape>
+    <!-- 背景内容 -->
+    <item>
+        <shape android:shape="rectangle">
+            <solid android:color="#F0F0F0" />
+            <corners android:radius="12dp" />
+        </shape>
+    </item>
+
+</ripple>

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

@@ -1,20 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+    android:color="?attr/colorControlHighlight">
 
-    <!-- 按下状态 -->
+    <!-- 按钮背景 -->
-    <item android:state_pressed="true">
-        <shape android:shape="rectangle">
-            <solid android:color="#80E6E6E6"/> <!-- 按下颜色：深一点 -->
-            <corners android:radius="24dp"/>
-        </shape>
-    </item>
-
-    <!-- 默认状态 -->
     <item>
         <shape android:shape="rectangle">
-            <solid android:color="#E6E6E6"/> <!-- 默认颜色 -->
+            <solid android:color="@color/grey" />
-            <corners android:radius="24dp"/>
+            <corners android:radius="12dp" />
         </shape>
     </item>
 
-</selector>
+</ripple>

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

@@ -1,20 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+    android:color="?attr/colorControlHighlight">
 
-    <!-- 按下状态 -->
+    <!-- 按钮背景 -->
-    <item android:state_pressed="true">
-        <shape android:shape="rectangle">
-            <solid android:color="#C42F1C"/> <!-- 按下颜色：深一点 -->
-            <corners android:radius="24dp"/>
-        </shape>
-    </item>
-
-    <!-- 默认状态 -->
     <item>
         <shape android:shape="rectangle">
-            <solid android:color="#E43521"/> <!-- 默认颜色 -->
+            <solid android:color="#E43521"/>
-            <corners android:radius="24dp"/>
+            <corners android:radius="12dp"/>
         </shape>
     </item>
 
-</selector>
+</ripple>

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

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+    android:color="#0D000000">
+
+    <!--id/mask用来限制水波纹形状，不加ID则是设置背景内容 -->
+    <item android:id="@android:id/mask">
+        <shape android:shape="oval">
+            <solid android:color="#FFFFFFFF"/>
+        </shape>
+    </item>
+</ripple>

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

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+    android:color="#0D000000">
+
+    <!--id/mask用来限制水波纹形状，不加ID则是设置背景内容 -->
+    <item android:id="@android:id/mask">
+        <shape android:shape="rectangle">
+            <solid android:color="#FFFFFFFF" />
+        </shape>
+    </item>
+</ripple>

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

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+    android:color="#0D000000"> <!-- 系统默认点击高亮颜色 -->
+
+    <!-- 背景内容 -->
+    <item>
+        <shape android:shape="rectangle">
+            <solid android:color="@color/white"/>
+            <corners android:radius="12dp"/>
+        </shape>
+    </item>
+
+</ripple>

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

@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <!-- 按下状态 -->
-    <item android:state_pressed="true">
-        <shape android:shape="oval">
-            <solid android:color="#0D000000" /> <!-- 按下颜色：深一点 -->
-        </shape>
-    </item>
-
-    <!-- 默认状态 -->
-    <item>
-        <shape android:shape="oval">
-            <solid android:color="#00000000" /> <!-- 默认颜色 -->
-        </shape>
-    </item>
-
-</selector>

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

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="@color/icon_sel_off_color"
+        android:fillType="evenOdd"
+        android:pathData="M20.5,6C20.7761,6 21,6.2239 21,6.5L21,7.5C21,7.7761 20.7761,8 20.5,8L19,8L19,20.5C19,20.7761 18.7761,21 18.5,21L5.5,21C5.2239,21 5,20.7761 5,20.5L5,8L3.5,8C3.2239,8 3,7.7761 3,7.5L3,6.5C3,6.2239 3.2239,6 3.5,6L20.5,6ZM17,8L7,8L7,18.5C7,18.7761 7.2239,19 7.5,19L16.5,19C16.7761,19 17,18.7761 17,18.5L17,8ZM10.5,9C10.7761,9 11,9.2239 11,9.5L11,17.5C11,17.7761 10.7761,18 10.5,18L9.5,18C9.2239,18 9,17.7761 9,17.5L9,9.5C9,9.2239 9.2239,9 9.5,9L10.5,9ZM14.5,9C14.7761,9 15,9.2239 15,9.5L15,17.5C15,17.7761 14.7761,18 14.5,18L13.5,18C13.2239,18 13,17.7761 13,17.5L13,9.5C13,9.2239 13.2239,9 13.5,9L14.5,9ZM16.5,3C16.7761,3 17,3.2239 17,3.5L17,4.5C17,4.7761 16.7761,5 16.5,5L7.5,5C7.2239,5 7,4.7761 7,4.5L7,3.5C7,3.2239 7.2239,3 7.5,3L16.5,3Z"
+        android:strokeWidth="1.0"
+        android:strokeColor="#00000000" />
+</vector>

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

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#000000"
+        android:fillType="evenOdd"
+        android:pathData="M20.5,6C20.7761,6 21,6.2239 21,6.5L21,7.5C21,7.7761 20.7761,8 20.5,8L19,8L19,20.5C19,20.7761 18.7761,21 18.5,21L5.5,21C5.2239,21 5,20.7761 5,20.5L5,8L3.5,8C3.2239,8 3,7.7761 3,7.5L3,6.5C3,6.2239 3.2239,6 3.5,6L20.5,6ZM17,8L7,8L7,18.5C7,18.7761 7.2239,19 7.5,19L16.5,19C16.7761,19 17,18.7761 17,18.5L17,8ZM10.5,9C10.7761,9 11,9.2239 11,9.5L11,17.5C11,17.7761 10.7761,18 10.5,18L9.5,18C9.2239,18 9,17.7761 9,17.5L9,9.5C9,9.2239 9.2239,9 9.5,9L10.5,9ZM14.5,9C14.7761,9 15,9.2239 15,9.5L15,17.5C15,17.7761 14.7761,18 14.5,18L13.5,18C13.2239,18 13,17.7761 13,17.5L13,9.5C13,9.2239 13.2239,9 13.5,9L14.5,9ZM16.5,3C16.7761,3 17,3.2239 17,3.5L17,4.5C17,4.7761 16.7761,5 16.5,5L7.5,5C7.2239,5 7,4.7761 7,4.5L7,3.5C7,3.2239 7.2239,3 7.5,3L16.5,3Z"
+        android:strokeWidth="1.0"
+        android:strokeColor="#00000000" />
+</vector>

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

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#00000000"
+        android:fillType="evenOdd"
+        android:pathData="M5,4L15,4A0.5,0.5 0,0 1,15.5 4.5L15.5,14.5A0.5,0.5 0,0 1,15 15L5,15A0.5,0.5 0,0 1,4.5 14.5L4.5,4.5A0.5,0.5 0,0 1,5 4z"
+        android:strokeWidth="2.0"
+        android:strokeColor="#cccccc" />
+    <path
+        android:fillColor="#00000000"
+        android:fillType="evenOdd"
+        android:pathData="M10,9L20,9A0.5,0.5 0,0 1,20.5 9.5L20.5,19.5A0.5,0.5 0,0 1,20 20L10,20A0.5,0.5 0,0 1,9.5 19.5L9.5,9.5A0.5,0.5 0,0 1,10 9z"
+        android:strokeWidth="2.0"
+        android:strokeColor="#cccccc" />
+</vector>

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

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#00000000"
+        android:fillType="evenOdd"
+        android:pathData="M5,4L15,4A0.5,0.5 0,0 1,15.5 4.5L15.5,14.5A0.5,0.5 0,0 1,15 15L5,15A0.5,0.5 0,0 1,4.5 14.5L4.5,4.5A0.5,0.5 0,0 1,5 4z"
+        android:strokeWidth="2.0"
+        android:strokeColor="#000000" />
+    <path
+        android:fillColor="#00000000"
+        android:fillType="evenOdd"
+        android:pathData="M10,9L20,9A0.5,0.5 0,0 1,20.5 9.5L20.5,19.5A0.5,0.5 0,0 1,20 20L10,20A0.5,0.5 0,0 1,9.5 19.5L9.5,9.5A0.5,0.5 0,0 1,10 9z"
+        android:strokeWidth="2.0"
+        android:strokeColor="#000000" />
+</vector>

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

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#00000000"
+        android:fillType="evenOdd"
+        android:pathData="M12,12m-9,0a9,9 0,1 1,18 0a9,9 0,1 1,-18 0"
+        android:strokeWidth="2.0"
+        android:strokeColor="@color/icon_sel_off_color" />
+    <path
+        android:fillColor="@color/icon_sel_off_color"
+        android:fillType="evenOdd"
+        android:pathData="M7.5,11L16.5,11A0.5,0.5 0,0 1,17 11.5L17,12.5A0.5,0.5 0,0 1,16.5 13L7.5,13A0.5,0.5 0,0 1,7 12.5L7,11.5A0.5,0.5 0,0 1,7.5 11z"
+        android:strokeWidth="1.0"
+        android:strokeColor="#00000000" />
+</vector>

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

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#00000000"
+        android:fillType="evenOdd"
+        android:pathData="M12,12m-9,0a9,9 0,1 1,18 0a9,9 0,1 1,-18 0"
+        android:strokeWidth="2.0"
+        android:strokeColor="#000000" />
+    <path
+        android:fillColor="#000000"
+        android:fillType="evenOdd"
+        android:pathData="M7.5,11L16.5,11A0.5,0.5 0,0 1,17 11.5L17,12.5A0.5,0.5 0,0 1,16.5 13L7.5,13A0.5,0.5 0,0 1,7 12.5L7,11.5A0.5,0.5 0,0 1,7.5 11z"
+        android:strokeWidth="1.0"
+        android:strokeColor="#00000000" />
+</vector>

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

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="@color/icon_sel_off_color"
+        android:fillType="evenOdd"
+        android:pathData="M21.1733,5.654C21.6986,6.5291 22,7.5694 22,8.6948C22,12.5217 18.7494,15.6557 13.7907,20.3133L13.45,20.6332L12,22L10.55,20.6436C9.7597,19.8999 9.0105,19.1953 8.3086,18.5211L9.7533,17.0756C10.2895,17.5883 10.856,18.1215 11.4497,18.6785L11.9,19.1008L12,19.2044L12.1,19.1008C16.86,14.6381 20,11.6872 20,8.6948C20,8.1317 19.8891,7.6068 19.6873,7.141L21.1733,5.654ZM19.7782,1.3934L21.1924,2.8076L19.8494,4.1499C19.8497,4.1501 19.8501,4.1504 19.8504,4.1507L18.3916,5.6087L4.2218,19.7782L2.8076,18.364L5.4981,15.6739C3.2954,13.2503 2,11.1106 2,8.6948C2,5.5057 4.42,3 7.5,3C9.24,3 10.91,3.8387 12,5.164C13.09,3.8387 14.76,3 16.5,3C17.0116,3 17.5049,3.0691 17.972,3.199L19.7782,1.3934ZM7.5,5.0708C5.5,5.0708 4,6.624 4,8.6948C4,10.4507 5.0811,12.1923 6.9363,14.2334L16.0747,5.0966C14.7573,5.2557 13.5347,6.1366 13.0133,7.3317L12.94,7.5144L11.07,7.5144C10.54,6.0959 9.04,5.0708 7.5,5.0708Z"
+        android:strokeWidth="1.0"
+        android:strokeColor="#00000000"
+        tools:ignore="VectorPath" />
+</vector>

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

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#000000"
+        android:fillType="evenOdd"
+        android:pathData="M21.1733,5.654C21.6986,6.5291 22,7.5694 22,8.6948C22,12.5217 18.7494,15.6557 13.7907,20.3133L13.45,20.6332L12,22L10.55,20.6436C9.7597,19.8999 9.0105,19.1953 8.3086,18.5211L9.7533,17.0756C10.2895,17.5883 10.856,18.1215 11.4497,18.6785L11.9,19.1008L12,19.2044L12.1,19.1008C16.86,14.6381 20,11.6872 20,8.6948C20,8.1317 19.8891,7.6068 19.6873,7.141L21.1733,5.654ZM19.7782,1.3934L21.1924,2.8076L19.8494,4.1499C19.8497,4.1501 19.8501,4.1504 19.8504,4.1507L18.3916,5.6087L4.2218,19.7782L2.8076,18.364L5.4981,15.6739C3.2954,13.2503 2,11.1106 2,8.6948C2,5.5057 4.42,3 7.5,3C9.24,3 10.91,3.8387 12,5.164C13.09,3.8387 14.76,3 16.5,3C17.0116,3 17.5049,3.0691 17.972,3.199L19.7782,1.3934ZM7.5,5.0708C5.5,5.0708 4,6.624 4,8.6948C4,10.4507 5.0811,12.1923 6.9363,14.2334L16.0747,5.0966C14.7573,5.2557 13.5347,6.1366 13.0133,7.3317L12.94,7.5144L11.07,7.5144C10.54,6.0959 9.04,5.0708 7.5,5.0708Z"
+        android:strokeWidth="1.0"
+        android:strokeColor="#00000000"
+        tools:ignore="VectorPath" />
+</vector>

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

@@ -19,9 +19,10 @@
 
         <LinearLayout
             android:id="@+id/sidebarBtn"
-            android:layout_width="40dp"
+            android:layout_width="44dp"
-            android:layout_height="40dp"
+            android:layout_height="44dp"
-            android:layout_marginStart="8dp"
+            android:layout_marginStart="6dp"
+            android:background="@drawable/dr_click_effect_oval_transparent"
             android:gravity="center">
 
             <ImageView
@@ -35,8 +36,8 @@
             style="@style/TextViewFont_PopMedium"
             android:layout_width="0dp"
             android:layout_height="wrap_content"
-            android:layout_marginStart="8dp"
+            android:layout_marginStart="6dp"
-            android:layout_marginEnd="8dp"
+            android:layout_marginEnd="6dp"
             android:layout_weight="1"
             android:text="@string/app_name"
             android:textColor="@color/black"
@@ -50,8 +51,9 @@
 
             <LinearLayout
                 android:id="@+id/searchBtn"
-                android:layout_width="40dp"
+                android:layout_width="44dp"
-                android:layout_height="40dp"
+                android:layout_height="44dp"
+                android:background="@drawable/dr_click_effect_oval_transparent"
                 android:gravity="center">
 
                 <ImageView
@@ -62,9 +64,10 @@
 
             <LinearLayout
                 android:id="@+id/sortingBtn"
-                android:layout_width="40dp"
+                android:layout_width="44dp"
-                android:layout_height="40dp"
+                android:layout_height="44dp"
-                android:layout_marginEnd="8dp"
+                android:layout_marginEnd="6dp"
+                android:background="@drawable/dr_click_effect_oval_transparent"
                 android:gravity="center">
 
                 <ImageView
@@ -76,6 +79,60 @@
         </LinearLayout>
     </LinearLayout>
 
+    <LinearLayout
+        android:id="@+id/multiSelectTopLayout"
+        android:layout_width="match_parent"
+        android:layout_height="56dp"
+        android:gravity="center_vertical"
+        android:orientation="horizontal"
+        android:visibility="visible">
+
+        <LinearLayout
+            android:id="@+id/multiSelectBackBtn"
+            android:layout_width="44dp"
+            android:layout_height="44dp"
+            android:layout_marginStart="6dp"
+            android:background="@drawable/dr_click_effect_oval_transparent"
+            android:gravity="center">
+
+            <ImageView
+                android:layout_width="24dp"
+                android:layout_height="24dp"
+                android:src="@drawable/back_black" />
+        </LinearLayout>
+
+
+        <TextView
+            android:id="@+id/multiSelectNumberTv"
+            style="@style/TextViewFont_PopMedium"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="6dp"
+            android:layout_marginEnd="6dp"
+            android:layout_weight="1"
+            android:text="@string/selected_page"
+            android:textColor="@color/black"
+            android:textSize="18sp" />
+
+        <LinearLayout
+            android:id="@+id/multiSelectAllBtn"
+            android:layout_width="44dp"
+            android:layout_height="44dp"
+            android:layout_marginEnd="6dp"
+            android:gravity="center">
+
+            <ImageView
+                android:id="@+id/multiSelectAllIv"
+                android:layout_width="24dp"
+                android:layout_height="24dp"
+                android:background="@drawable/dr_circular_sel_off_bg"
+                android:padding="2dp"
+                android:src="@drawable/gou_white" />
+
+        </LinearLayout>
+    </LinearLayout>
+
+
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="0dp"
@@ -168,9 +225,10 @@
             android:background="@color/line_color" />
 
         <LinearLayout
+            android:id="@+id/navigationLayout"
             android:layout_width="match_parent"
-            android:background="@color/white"
             android:layout_height="64dp"
+            android:background="@color/white"
             android:orientation="horizontal">
 
             <LinearLayout
@@ -178,6 +236,7 @@
                 android:layout_width="0dp"
                 android:layout_height="match_parent"
                 android:layout_weight="1"
+                android:background="@drawable/dr_click_effect_rectangle_transparent"
                 android:gravity="center"
                 android:orientation="vertical">
 
@@ -202,6 +261,7 @@
                 android:layout_width="0dp"
                 android:layout_height="match_parent"
                 android:layout_weight="1"
+                android:background="@drawable/dr_click_effect_rectangle_transparent"
                 android:gravity="center"
                 android:orientation="vertical">
 
@@ -226,6 +286,7 @@
                 android:layout_width="0dp"
                 android:layout_height="match_parent"
                 android:layout_weight="1"
+                android:background="@drawable/dr_click_effect_rectangle_transparent"
                 android:gravity="center"
                 android:orientation="vertical">
 
@@ -250,6 +311,7 @@
                 android:layout_width="0dp"
                 android:layout_height="match_parent"
                 android:layout_weight="1"
+                android:background="@drawable/dr_click_effect_rectangle_transparent"
                 android:gravity="center"
                 android:orientation="vertical">
 
@@ -271,6 +333,116 @@
 
         </LinearLayout>
 
+        <LinearLayout
+            android:id="@+id/multiSelectBottomLayout"
+            android:layout_width="match_parent"
+            android:layout_height="64dp"
+            android:background="@color/white"
+            android:orientation="horizontal"
+            android:visibility="visible">
+
+            <LinearLayout
+                android:id="@+id/multiSelectDeleteBtn"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:background="@drawable/dr_click_effect_rectangle_transparent"
+                android:gravity="center"
+                android:orientation="vertical">
+
+                <ImageView
+                    android:id="@+id/multiSelectDeleteIv"
+                    android:layout_width="24dp"
+                    android:layout_height="24dp"
+                    android:src="@drawable/icon_delete_sel_on" />
+
+                <TextView
+                    android:id="@+id/multiSelectDeleteTv"
+                    style="@style/TextViewFont_PopMedium"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/delete"
+                    android:textColor="@color/black"
+                    android:textSize="12sp" />
+            </LinearLayout>
+
+            <LinearLayout
+                android:id="@+id/multiSelectRemoveBtn"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:background="@drawable/dr_click_effect_rectangle_transparent"
+                android:gravity="center"
+                android:orientation="vertical">
+
+                <ImageView
+                    android:id="@+id/multiSelectRemoveIv"
+                    android:layout_width="24dp"
+                    android:layout_height="24dp"
+                    android:src="@drawable/icon_remove_sel_on" />
+
+                <TextView
+                    android:id="@+id/multiSelectRemoveTv"
+                    style="@style/TextViewFont_PopMedium"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/remove"
+                    android:textColor="@color/black"
+                    android:textSize="12sp" />
+            </LinearLayout>
+
+            <LinearLayout
+                android:id="@+id/multiSelectUnFavoriteBtn"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:background="@drawable/dr_click_effect_rectangle_transparent"
+                android:gravity="center"
+                android:orientation="vertical">
+
+                <ImageView
+                    android:id="@+id/multiSelectUnFavoriteIv"
+                    android:layout_width="24dp"
+                    android:layout_height="24dp"
+                    android:src="@drawable/icon_un_favorite_sel_on" />
+
+                <TextView
+                    android:id="@+id/multiSelectUnFavoriteTv"
+                    style="@style/TextViewFont_PopMedium"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/un_favorite"
+                    android:textColor="@color/black"
+                    android:textSize="12sp" />
+            </LinearLayout>
+
+            <LinearLayout
+                android:id="@+id/multiSelectMergeBtn"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:background="@drawable/dr_click_effect_rectangle_transparent"
+                android:gravity="center"
+                android:orientation="vertical">
+
+                <ImageView
+                    android:id="@+id/multiSelectMergeIv"
+                    android:layout_width="24dp"
+                    android:layout_height="24dp"
+                    android:src="@drawable/icon_merge_sel_off" />
+
+                <TextView
+                    android:id="@+id/multiSelectMergeTv"
+                    style="@style/TextViewFont_PopMedium"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/merge"
+                    android:textColor="@color/icon_sel_off_color"
+                    android:textSize="12sp" />
+            </LinearLayout>
+
+        </LinearLayout>
+
     </LinearLayout>
 
 </LinearLayout>

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

@@ -22,6 +22,7 @@
         <LinearLayout
             android:id="@+id/backBtn"
             android:layout_width="40dp"
+            android:background="@drawable/dr_click_effect_oval_transparent"
             android:layout_height="40dp"
             android:layout_marginStart="8dp"
             android:layout_marginEnd="8dp"

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

@@ -75,6 +75,7 @@
             android:layout_height="40dp"
             android:layout_marginStart="8dp"
             android:layout_marginEnd="8dp"
+            android:background="@drawable/dr_click_effect_oval_transparent"
             android:gravity="center">
 
             <ImageView

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

@@ -29,6 +29,7 @@
                 android:layout_height="40dp"
                 android:layout_marginStart="8dp"
                 android:layout_marginEnd="8dp"
+                android:background="@drawable/dr_click_effect_oval_transparent"
                 android:gravity="center">
 
                 <ImageView
@@ -57,6 +58,7 @@
                 android:layout_height="40dp"
                 android:layout_marginStart="8dp"
                 android:layout_marginEnd="8dp"
+                android:background="@drawable/dr_click_effect_oval_transparent"
                 android:gravity="center">
 
                 <ImageView
@@ -105,6 +107,7 @@
                     android:layout_width="0dp"
                     android:layout_height="match_parent"
                     android:layout_weight="1"
+                    android:background="@drawable/dr_click_effect_rectangle_transparent"
                     android:gravity="center"
                     android:orientation="vertical">
 
@@ -130,6 +133,7 @@
                     android:layout_width="0dp"
                     android:layout_height="match_parent"
                     android:layout_weight="1"
+                    android:background="@drawable/dr_click_effect_rectangle_transparent"
                     android:gravity="center"
                     android:orientation="vertical">
 
@@ -155,6 +159,7 @@
                     android:layout_width="0dp"
                     android:layout_height="match_parent"
                     android:layout_weight="1"
+                    android:background="@drawable/dr_click_effect_rectangle_transparent"
                     android:gravity="center"
                     android:orientation="vertical">
 
@@ -200,6 +205,7 @@
                     android:layout_width="0dp"
                     android:layout_height="match_parent"
                     android:layout_weight="1"
+                    android:background="@drawable/dr_click_effect_rectangle_transparent"
                     android:gravity="center"
                     android:orientation="vertical">
 

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

@@ -23,6 +23,7 @@
             android:layout_width="40dp"
             android:layout_height="40dp"
             android:layout_marginStart="8dp"
+            android:background="@drawable/dr_click_effect_oval_transparent"
             android:layout_marginEnd="8dp"
             android:gravity="center">
 
@@ -107,10 +108,10 @@
         <LinearLayout
             android:layout_width="match_parent"
             android:layout_height="32dp"
-            android:gravity="center_vertical"
             android:layout_marginStart="16dp"
-            android:layout_marginEnd="16dp"
             android:layout_marginTop="16dp"
+            android:layout_marginEnd="16dp"
+            android:gravity="center_vertical"
             android:orientation="horizontal">
 
             <TextView
@@ -131,6 +132,7 @@
                 android:id="@+id/clearHistory"
                 android:layout_width="32dp"
                 android:layout_height="32dp"
+                android:background="@drawable/dr_click_effect_oval_transparent"
                 android:gravity="center">
 
                 <ImageView

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

@@ -7,7 +7,7 @@
     android:layout_marginTop="6dp"
     android:layout_marginEnd="16dp"
     android:layout_marginBottom="6dp"
-    android:background="@drawable/dr_rounded_corner_12_bg_white"
+    android:background="@drawable/dr_item_click_btn_bg"
     android:orientation="vertical"
     tools:ignore="RtlSymmetry">
 
@@ -122,6 +122,7 @@
             android:id="@+id/moreBtn"
             android:layout_width="48dp"
             android:layout_height="48dp"
+            android:background="@drawable/dr_click_effect_oval_transparent"
             android:gravity="center">
 
             <ImageView
@@ -129,6 +130,23 @@
                 android:layout_height="24dp"
                 android:src="@drawable/more" />
         </LinearLayout>
+        <LinearLayout
+            android:id="@+id/checkBtn"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:background="@drawable/dr_click_effect_oval_transparent"
+            android:gravity="center">
+
+            <CheckBox
+                android:id="@id/checkbox"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center_vertical"
+                android:clickable="false"
+                android:duplicateParentState="true"
+                android:focusable="false" />
+        </LinearLayout>
+
     </LinearLayout>
 
 

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

@@ -105,6 +105,7 @@
             android:id="@+id/collectBtn"
             android:layout_width="48dp"
             android:layout_height="48dp"
+            android:background="@drawable/dr_click_effect_oval_transparent"
             android:gravity="center">
 
             <ImageView
@@ -152,6 +153,7 @@
             android:layout_width="0dp"
             android:layout_height="wrap_content"
             android:layout_weight="1"
+            android:background="@drawable/dr_click_effect_rectangle_transparent"
             android:gravity="center"
             android:orientation="vertical">
 
@@ -175,6 +177,7 @@
             android:layout_width="0dp"
             android:layout_height="wrap_content"
             android:layout_weight="1"
+            android:background="@drawable/dr_click_effect_rectangle_transparent"
             android:gravity="center"
             android:orientation="vertical">
 
@@ -198,6 +201,7 @@
             android:layout_width="0dp"
             android:layout_height="wrap_content"
             android:layout_weight="1"
+            android:background="@drawable/dr_click_effect_rectangle_transparent"
             android:gravity="center"
             android:orientation="vertical">
 
@@ -221,6 +225,7 @@
             android:layout_width="0dp"
             android:layout_height="wrap_content"
             android:layout_weight="1"
+            android:background="@drawable/dr_click_effect_rectangle_transparent"
             android:gravity="center"
             android:orientation="vertical">
 
@@ -258,6 +263,7 @@
             android:id="@+id/duplicateFileBtn"
             android:layout_width="match_parent"
             android:layout_height="48dp"
+            android:background="@drawable/dr_click_effect_rectangle_transparent"
             android:gravity="center_vertical"
             android:orientation="horizontal">
 
@@ -279,6 +285,7 @@
             android:id="@+id/splitBtn"
             android:layout_width="match_parent"
             android:layout_height="48dp"
+            android:background="@drawable/dr_click_effect_rectangle_transparent"
             android:gravity="center_vertical"
             android:orientation="horizontal">
 
@@ -301,6 +308,7 @@
             android:id="@+id/setPasswordBtn"
             android:layout_width="match_parent"
             android:layout_height="48dp"
+            android:background="@drawable/dr_click_effect_rectangle_transparent"
             android:gravity="center_vertical"
             android:orientation="horizontal">
 
@@ -324,6 +332,7 @@
             android:id="@+id/removeRecentBtn"
             android:layout_width="match_parent"
             android:layout_height="48dp"
+            android:background="@drawable/dr_click_effect_rectangle_transparent"
             android:gravity="center_vertical"
             android:orientation="horizontal">
 
@@ -346,6 +355,7 @@
             android:id="@+id/deleteFileBtn"
             android:layout_width="match_parent"
             android:layout_height="48dp"
+            android:background="@drawable/dr_click_effect_rectangle_transparent"
             android:gravity="center_vertical"
             android:orientation="horizontal">
 

app/src/main/res/values/colors.xml

@@ -9,6 +9,7 @@
     <color name="black_80">#CC222222</color>
     <color name="black_60">#99222222</color>
     <color name="white">#FFFFFFFF</color>
+    <color name="transparent">#00000000</color>
     <color name="grey">#E6E6E6</color>
     <color name="bg_color">#F9F9F9</color>
     <color name="line_color">#E0E0E0</color>

app/src/main/res/values/strings.xml

@@ -3,6 +3,7 @@
     <string name="home">Home</string>
     <string name="recently">Recently</string>
     <string name="favorite">Favorite</string>
+    <string name="un_favorite">Unfavorite</string>
     <string name="tools">Tools</string>
     <string name="splash_desc">Professional PDF Document Reader</string>
     <string name="permission_required">Permission Required</string>
@@ -124,6 +125,7 @@
     <string name="split_pdf">Split PDF</string>
     <string name="split">Split</string>
     <string name="merge_pdf">Merge PDF</string>
+    <string name="merge">Merge</string>
     <string name="selected_page">%1$d Selected</string>
     <string name="loading">Loading</string>
     <string name="continue_now">Continue Now</string>