区别搜索的adapter。搜索会单独高亮，并且使用PdfDiffCallback，因为搜索会频繁的刷新列表。

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

@@ -73,11 +73,6 @@ class PdfViewActivity : BaseActivity(), OnLoadCompleteListener, OnPageChangeList
         viewModel.pdfDocument.observe(this) { document ->
             document?.let {
                 pdfDocument = it
-                // 只有文件路径变化才重新加载 PDF
-//                if (lastLoadedFilePath != pdfDocument.filePath) {
-//                    lastLoadedFilePath = pdfDocument.filePath
-//                    loadPdf()
-//                }
                 loadPdf()
                 initView()
             } ?: run {
@@ -113,32 +108,6 @@ class PdfViewActivity : BaseActivity(), OnLoadCompleteListener, OnPageChangeList
                 showToast(getString(R.string.bookmark_add_fail))
             }
         }
-
-//        viewModel.fileActionEvent.observeEvent<FileActionEvent.Rename>(this) { event ->
-//            if (event.renameResult.success) {
-//                showToast(getString(R.string.rename_successfully))
-//                event.renameResult.newFilePath?.let {
-//                    //修改名称需要重新load界面，因为路径都更改了
-//                    viewModel.getPDFDocument(it)
-//                }
-//            } else {
-//                showToast(event.renameResult.errorMessage.toString())
-//            }
-//        }
-//        viewModel.fileActionEvent.observeEvent<FileActionEvent.Duplicate>(this) { event ->
-//            if (event.file != null) {
-//                showToast(getString(R.string.duplicate_created_successfully))
-//            } else {
-//                showToast(getString(R.string.duplicate_created_failed))
-//            }
-//        }
-//        viewModel.fileActionEvent.observeEvent<FileActionEvent.Favorite>(this) { event ->
-//            if (event.isFavorite) {
-//                showToast(getString(R.string.added_to_favorites))
-//            } else {
-//                showToast(getString(R.string.removed_from_favorites))
-//            }
-//        }
     }
 
     private fun initView() {

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

@@ -13,6 +13,7 @@ import androidx.recyclerview.widget.LinearLayoutManager
 import com.all.pdfreader.pro.app.R
 import com.all.pdfreader.pro.app.databinding.ActivitySearchPddBinding
 import com.all.pdfreader.pro.app.ui.adapter.PdfAdapter
+import com.all.pdfreader.pro.app.ui.adapter.SearchPdfAdapter
 import com.all.pdfreader.pro.app.ui.dialog.ListMoreDialogFragment
 import com.all.pdfreader.pro.app.util.AppUtils.showKeyboard
 import com.gyf.immersionbar.ImmersionBar
@@ -32,7 +33,7 @@ class SearchActivity : BaseActivity() {
     }
 
     private lateinit var binding: ActivitySearchPddBinding
-    private lateinit var adapter: PdfAdapter
+    private lateinit var adapter: SearchPdfAdapter
     private val pdfRepository = getRepository()
     private var searchJob: Job? = null
 
@@ -92,7 +93,7 @@ class SearchActivity : BaseActivity() {
 
     private fun initView() {
         binding.searchEdit.showKeyboard()
-        adapter = PdfAdapter(onItemClick = { pdf ->
+        adapter = SearchPdfAdapter(onItemClick = { pdf ->
             val intent = PdfViewActivity.createIntent(this, pdf.filePath)
             startActivity(intent)
         }, onMoreClick = { pdf ->

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

@@ -4,88 +4,62 @@ import android.annotation.SuppressLint
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import androidx.recyclerview.widget.ListAdapter
 import androidx.recyclerview.widget.RecyclerView
-import com.all.pdfreader.pro.app.R
 import com.all.pdfreader.pro.app.databinding.AdapterPdfItemBinding
 import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
 import com.all.pdfreader.pro.app.util.AppUtils.dpToPx
-import com.all.pdfreader.pro.app.util.AppUtils.toHighlightedSpannable
 import com.all.pdfreader.pro.app.util.FileUtils.toFormatFileSize
 import com.all.pdfreader.pro.app.util.FileUtils.toSlashDate
-import com.all.pdfreader.pro.app.util.PdfDiffCallback
 import com.bumptech.glide.Glide
 import com.bumptech.glide.load.resource.bitmap.CenterCrop
 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
-) : ListAdapter<PdfDocumentEntity, PdfAdapter.PdfViewHolder>(PdfDiffCallback()) {
+) : RecyclerView.Adapter<PdfAdapter.PdfViewHolder>() {
 
     inner class PdfViewHolder(val binding: AdapterPdfItemBinding) :
         RecyclerView.ViewHolder(binding.root)
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): PdfViewHolder {
-        val binding = AdapterPdfItemBinding.inflate(
-            LayoutInflater.from(parent.context), parent, false
-        )
+        val binding =
+            AdapterPdfItemBinding.inflate(LayoutInflater.from(parent.context), parent, false)
         return PdfViewHolder(binding)
     }
 
     @SuppressLint("SetTextI18n")
     override fun onBindViewHolder(holder: PdfViewHolder, position: Int) {
-        bindItem(holder, getItem(position), null)
-    }
-
-    override fun onBindViewHolder(holder: PdfViewHolder, position: Int, payloads: MutableList<Any>) {
-        if (payloads.isNotEmpty()) {
-            val payload = payloads[0] as? String
-            bindItem(holder, getItem(position), payload)
-        } else {
-            super.onBindViewHolder(holder, position, payloads)
-        }
-    }
-
-    private fun bindItem(holder: PdfViewHolder, item: PdfDocumentEntity, highlightKeyword: String?) {
-        val context = holder.binding.root.context
-
-        // 文件名高亮，如果 highlightKeyword 为 null 或空字符串，就显示普通文本
-        holder.binding.tvFileName.text = if (highlightKeyword.isNullOrBlank()) {
-            item.fileName
-        } else {
-            item.fileName.toHighlightedSpannable(highlightKeyword, holder.binding.root.context.getColor(R.color.icon_sel_on_color))
-        }
-
+        val item = pdfList[position]
+        holder.binding.tvFileName.text = item.fileName
         holder.binding.tvFileSize.text = item.fileSize.toFormatFileSize()
         holder.binding.tvFileDate.text = item.lastModified.toSlashDate()
-
         if (item.isPassword) {
             holder.binding.lockLayout.visibility = View.VISIBLE
             holder.binding.tvFileImg.visibility = View.GONE
         } else {
             holder.binding.lockLayout.visibility = View.GONE
             holder.binding.tvFileImg.visibility = View.VISIBLE
-            Glide.with(context)
-                .load(item.thumbnailPath)
-                .transform(CenterCrop(), RoundedCorners(8.dpToPx(context)))
+            Glide.with(holder.binding.root).load(item.thumbnailPath)
+                .transform(CenterCrop(), RoundedCorners(8.dpToPx(holder.binding.root.context)))
                 .into(holder.binding.tvFileImg)
         }
 
-        holder.binding.root.setOnClickListener { onItemClick(item) }
-        holder.binding.moreBtn.setOnClickListener { onMoreClick(item) }
+        holder.binding.root.setOnClickListener {
+            onItemClick(item)
+        }
+        holder.binding.moreBtn.setOnClickListener {
+            onMoreClick(item)
+        }
     }
 
+    override fun getItemCount(): Int = pdfList.size
+
+    @SuppressLint("NotifyDataSetChanged")
     fun updateData(newList: List<PdfDocumentEntity>) {
-        submitList(newList.toList())
-    }
-
-    /**
-     * 搜索场景使用：只刷新高亮，不刷新整个列表
-     */
-    fun highlightItems(keyword: String) {
-        for (i in 0 until itemCount) {
-            notifyItemChanged(i, keyword)
-        }
+        pdfList.clear()
+        pdfList.addAll(newList)
+        notifyDataSetChanged()
     }
 }

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

@@ -0,0 +1,91 @@
+package com.all.pdfreader.pro.app.ui.adapter
+
+import android.annotation.SuppressLint
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.recyclerview.widget.ListAdapter
+import androidx.recyclerview.widget.RecyclerView
+import com.all.pdfreader.pro.app.R
+import com.all.pdfreader.pro.app.databinding.AdapterPdfItemBinding
+import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
+import com.all.pdfreader.pro.app.util.AppUtils.dpToPx
+import com.all.pdfreader.pro.app.util.AppUtils.toHighlightedSpannable
+import com.all.pdfreader.pro.app.util.FileUtils.toFormatFileSize
+import com.all.pdfreader.pro.app.util.FileUtils.toSlashDate
+import com.all.pdfreader.pro.app.util.PdfDiffCallback
+import com.bumptech.glide.Glide
+import com.bumptech.glide.load.resource.bitmap.CenterCrop
+import com.bumptech.glide.load.resource.bitmap.RoundedCorners
+
+class SearchPdfAdapter(
+    private val onItemClick: (PdfDocumentEntity) -> Unit,
+    private val onMoreClick: (PdfDocumentEntity) -> Unit
+) : ListAdapter<PdfDocumentEntity, SearchPdfAdapter.PdfViewHolder>(PdfDiffCallback()) {
+
+    inner class PdfViewHolder(val binding: AdapterPdfItemBinding) :
+        RecyclerView.ViewHolder(binding.root)
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): PdfViewHolder {
+        val binding = AdapterPdfItemBinding.inflate(
+            LayoutInflater.from(parent.context), parent, false
+        )
+        return PdfViewHolder(binding)
+    }
+
+    @SuppressLint("SetTextI18n")
+    override fun onBindViewHolder(holder: PdfViewHolder, position: Int) {
+        bindItem(holder, getItem(position), null)
+    }
+
+    override fun onBindViewHolder(holder: PdfViewHolder, position: Int, payloads: MutableList<Any>) {
+        if (payloads.isNotEmpty()) {
+            val payload = payloads[0] as? String
+            bindItem(holder, getItem(position), payload)
+        } else {
+            super.onBindViewHolder(holder, position, payloads)
+        }
+    }
+
+    private fun bindItem(holder: PdfViewHolder, item: PdfDocumentEntity, highlightKeyword: String?) {
+        val context = holder.binding.root.context
+
+        // 文件名高亮，如果 highlightKeyword 为 null 或空字符串，就显示普通文本
+        holder.binding.tvFileName.text = if (highlightKeyword.isNullOrBlank()) {
+            item.fileName
+        } else {
+            item.fileName.toHighlightedSpannable(highlightKeyword, holder.binding.root.context.getColor(R.color.icon_sel_on_color))
+        }
+
+        holder.binding.tvFileSize.text = item.fileSize.toFormatFileSize()
+        holder.binding.tvFileDate.text = item.lastModified.toSlashDate()
+
+        if (item.isPassword) {
+            holder.binding.lockLayout.visibility = View.VISIBLE
+            holder.binding.tvFileImg.visibility = View.GONE
+        } else {
+            holder.binding.lockLayout.visibility = View.GONE
+            holder.binding.tvFileImg.visibility = View.VISIBLE
+            Glide.with(context)
+                .load(item.thumbnailPath)
+                .transform(CenterCrop(), RoundedCorners(8.dpToPx(context)))
+                .into(holder.binding.tvFileImg)
+        }
+
+        holder.binding.root.setOnClickListener { onItemClick(item) }
+        holder.binding.moreBtn.setOnClickListener { onMoreClick(item) }
+    }
+
+    fun updateData(newList: List<PdfDocumentEntity>) {
+        submitList(newList.toList())
+    }
+
+    /**
+     * 搜索场景使用：只刷新高亮，不刷新整个列表
+     */
+    fun highlightItems(keyword: String) {
+        for (i in 0 until itemCount) {
+            notifyItemChanged(i, keyword)
+        }
+    }
+}

app/src/main/java/com/all/pdfreader/pro/app/ui/dialog/BookmarksDialogFragment.kt

@@ -13,6 +13,7 @@ import com.all.pdfreader.pro.app.model.RenameType
 import com.all.pdfreader.pro.app.room.entity.BookmarkEntity
 import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
 import com.all.pdfreader.pro.app.ui.adapter.BookmarkAdapter
+import com.all.pdfreader.pro.app.util.ToastUtils
 import com.all.pdfreader.pro.app.viewmodel.PdfViewModel
 import com.google.android.material.bottomsheet.BottomSheetDialogFragment
 

app/src/main/java/com/all/pdfreader/pro/app/ui/dialog/FileDetailsDialogFragment.kt

@@ -11,6 +11,7 @@ import com.all.pdfreader.pro.app.databinding.DialogFileDetailsBinding
 import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
 import com.all.pdfreader.pro.app.util.FileUtils.toFormatFileSize
 import com.all.pdfreader.pro.app.util.FileUtils.toSlashDateTime
+import com.all.pdfreader.pro.app.util.ToastUtils
 import com.all.pdfreader.pro.app.viewmodel.PdfViewModel
 import com.google.android.material.bottomsheet.BottomSheetDialogFragment
 

app/src/main/java/com/all/pdfreader/pro/app/ui/dialog/ListMoreDialogFragment.kt

@@ -24,6 +24,7 @@ import com.all.pdfreader.pro.app.util.AppUtils.setClickWithAnimation
 import com.all.pdfreader.pro.app.util.AppUtils.shareFile
 import com.all.pdfreader.pro.app.util.FileUtils.toFormatFileSize
 import com.all.pdfreader.pro.app.util.FileUtils.toSlashDate
+import com.all.pdfreader.pro.app.util.ToastUtils
 import com.all.pdfreader.pro.app.viewmodel.PdfViewModel
 import com.bumptech.glide.Glide
 import com.bumptech.glide.load.resource.bitmap.CenterCrop

app/src/main/java/com/all/pdfreader/pro/app/ui/dialog/PdfSetPasswordDialog.kt

@@ -15,6 +15,7 @@ import com.all.pdfreader.pro.app.R
 import com.all.pdfreader.pro.app.databinding.DialogPdfSetPasswordBinding
 import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
 import com.all.pdfreader.pro.app.util.AppUtils.showKeyboard
+import com.all.pdfreader.pro.app.util.ToastUtils
 import com.all.pdfreader.pro.app.viewmodel.PdfViewModel
 import kotlin.getValue
 

app/src/main/java/com/all/pdfreader/pro/app/ui/dialog/PromptDialogFragment.kt

@@ -10,6 +10,7 @@ import androidx.core.graphics.drawable.toDrawable
 import androidx.fragment.app.DialogFragment
 import com.all.pdfreader.pro.app.R
 import com.all.pdfreader.pro.app.databinding.DialogDeleteBinding
+import com.all.pdfreader.pro.app.util.ToastUtils
 
 class PromptDialogFragment(
     private val title: String,

app/src/main/java/com/all/pdfreader/pro/app/ui/dialog/RenameDialogFragment.kt

@@ -17,6 +17,7 @@ import com.all.pdfreader.pro.app.model.RenameType
 import com.all.pdfreader.pro.app.room.entity.BookmarkEntity
 import com.all.pdfreader.pro.app.util.AppUtils.showKeyboard
 import com.all.pdfreader.pro.app.util.FileUtils
+import com.all.pdfreader.pro.app.util.ToastUtils
 import com.all.pdfreader.pro.app.viewmodel.PdfViewModel
 import java.io.File
 

app/src/main/java/com/all/pdfreader/pro/app/ui/dialog/ViewModelDialogFragment.kt

@@ -17,6 +17,7 @@ import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
 import com.all.pdfreader.pro.app.sp.AppStore
 import com.all.pdfreader.pro.app.ui.view.CustomSwitchButton
 import com.all.pdfreader.pro.app.ui.view.CustomSwitchButton.OnCheckedChangeListener
+import com.all.pdfreader.pro.app.util.ToastUtils
 import com.all.pdfreader.pro.app.viewmodel.PdfViewModel
 import com.google.android.material.bottomsheet.BottomSheetDialogFragment
 

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

@@ -40,7 +40,7 @@ class FavoriteFrag : BaseFrag() {
     }
 
     private fun initView() {
-        adapter = PdfAdapter(onItemClick = { pdf ->
+        adapter = PdfAdapter(pdfList = mutableListOf(),onItemClick = { pdf ->
             val intent = PdfViewActivity.createIntent(requireContext(), pdf.filePath)
             startActivity(intent)
         }, onMoreClick = { pdf ->

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

@@ -42,7 +42,7 @@ class HomeFrag : BaseFrag(), MainActivity.SortableFragment {
     }
 
     private fun initView() {
-        adapter = PdfAdapter(onItemClick = { pdf ->
+        adapter = PdfAdapter(pdfList = mutableListOf(), onItemClick = { pdf ->
             val intent = PdfViewActivity.createIntent(requireContext(), pdf.filePath)
             startActivity(intent)
         }, onMoreClick = { pdf ->

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

@@ -39,7 +39,7 @@ class RecentlyFrag : BaseFrag() {
     }
 
     private fun initView() {
-        adapter = PdfAdapter(onItemClick = { pdf ->
+        adapter = PdfAdapter(pdfList = mutableListOf(),onItemClick = { pdf ->
             val intent = PdfViewActivity.createIntent(requireContext(), pdf.filePath)
             startActivity(intent)
         }, onMoreClick = { pdf ->