update

app/src/main/java/com/all/pdfreader/pro/app/sp/AppStore.kt

@@ -14,8 +14,14 @@ class AppStore(context: Context) {
         key = PERMISSIONS_DIALOG_PROMPT, defaultValue = false
     )
 
+    // 文档排序方式：name_asc, name_desc, date_asc, date_desc, size_asc, size_desc
+    var documentSortType: String by store.string(
+        key = DOCUMENT_SORT_TYPE, defaultValue = "date_desc"
+    )
+
     companion object {
         private const val FILE_NAME = "prp_sp_name"
         private const val PERMISSIONS_DIALOG_PROMPT = "permissions_dialog_prompt"
+        private const val DOCUMENT_SORT_TYPE = "document_sort_type"
     }
 }

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

@@ -9,13 +9,12 @@ import androidx.lifecycle.lifecycleScope
 import com.all.pdfreader.pro.app.R
 import com.all.pdfreader.pro.app.databinding.ActivityMainBinding
 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.dialog.PermissionDialogFragment
 import com.all.pdfreader.pro.app.ui.fragment.FavoriteFrag
 import com.all.pdfreader.pro.app.ui.fragment.HomeFrag
 import com.all.pdfreader.pro.app.ui.fragment.RecentlyFrag
 import com.all.pdfreader.pro.app.ui.fragment.ToolsFrag
-import com.all.pdfreader.pro.app.util.AppUtils.setDebouncedClickWithAnimation
+import com.all.pdfreader.pro.app.util.AppUtils.setClickWithAnimation
 import com.all.pdfreader.pro.app.util.FileChangeObserver
 import com.all.pdfreader.pro.app.util.FileUtils
 import com.all.pdfreader.pro.app.util.PdfMetadataExtractor
@@ -100,16 +99,16 @@ class MainActivity : BaseActivity(), PermissionDialogFragment.PermissionCallback
             requestPermissions()
         }
 
-        binding.sidebarBtn.setDebouncedClickWithAnimation {
+        binding.sidebarBtn.setClickWithAnimation {
 
         }
 
-        binding.searchBtn.setDebouncedClickWithAnimation {
+        binding.searchBtn.setClickWithAnimation {
 
         }
 
-        binding.sortingBtn.setDebouncedClickWithAnimation {
+        binding.sortingBtn.setClickWithAnimation {
-
+            showSortDialog()
         }
     }
 
@@ -120,6 +119,40 @@ class MainActivity : BaseActivity(), PermissionDialogFragment.PermissionCallback
         updateSelectedNav(target)
     }
 
+    private fun showSortDialog() {
+        val sortOptions = arrayOf(
+            "名称升序", "名称降序",
+            "日期升序", "日期降序", 
+            "大小升序", "大小降序"
+        )
+        val sortValues = arrayOf(
+            "name_asc", "name_desc",
+            "date_asc", "date_desc",
+            "size_asc", "size_desc"
+        )
+        
+        val currentSort = appStore.documentSortType
+        val checkedItem = sortValues.indexOf(currentSort)
+
+        android.app.AlertDialog.Builder(this)
+            .setTitle("选择排序方式")
+            .setSingleChoiceItems(sortOptions, checkedItem) { dialog, which ->
+                val newSortType = sortValues[which]
+                appStore.documentSortType = newSortType
+                
+                // 通知当前fragment更新排序
+                (activeFragment as? SortableFragment)?.onSortTypeChanged(newSortType)
+                
+                dialog.dismiss()
+            }
+            .setNegativeButton("取消", null)
+            .show()
+    }
+
+    interface SortableFragment {
+        fun onSortTypeChanged(sortType: String)
+    }
+
     private fun updateSelectedNav(fragment: Fragment) {
         binding.homeIv.alpha = 0.5f
         binding.recentlyIv.alpha = 0.5f

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

@@ -10,13 +10,14 @@ 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.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.adapter.PdfAdapter
 import kotlinx.coroutines.flow.firstOrNull
 import kotlinx.coroutines.launch
 
-class HomeFrag : BaseFrag() {
+class HomeFrag : BaseFrag(), MainActivity.SortableFragment {
     override val TAG: String = "HomeFrag"
     private lateinit var binding: FragmentHomeBinding
     private lateinit var adapter: PdfAdapter
@@ -53,15 +54,33 @@ class HomeFrag : BaseFrag() {
         }
     }
 
+    override fun onSortTypeChanged(sortType: String) {
+        // 排序类型改变时重新加载数据
+        observeDocuments()
+    }
+
     private fun observeDocuments() {
         lifecycleScope.launch {
             viewLifecycleOwner.lifecycle.repeatOnLifecycle(Lifecycle.State.STARTED) {
                 PdfRepository.getInstance().getAllDocuments().collect { list ->
-                    adapter.updateData(list)
+                    val sortedList = sortDocuments(list)
-                    logDebug("更新adapter数据")
+                    adapter.updateData(sortedList)
+                    logDebug("更新adapter数据，排序方式: ${appStore.documentSortType}")
                 }
             }
         }
     }
 
+    private fun sortDocuments(documents: List<PdfDocumentEntity>): List<PdfDocumentEntity> {
+        return when (appStore.documentSortType) {
+            "name_asc" -> documents.sortedBy { it.fileName.lowercase() }
+            "name_desc" -> documents.sortedByDescending { it.fileName.lowercase() }
+            "date_asc" -> documents.sortedBy { it.lastModified }
+            "date_desc" -> documents.sortedByDescending { it.lastModified }
+            "size_asc" -> documents.sortedBy { it.fileSize }
+            "size_desc" -> documents.sortedByDescending { it.fileSize }
+            else -> documents
+        }
+    }
+
 }

app/src/main/java/com/all/pdfreader/pro/app/util/AppUtils.kt

@@ -5,26 +5,19 @@ import android.view.View
 object AppUtils {
 
     /**
-     * 为 View 点击事件添加防抖点击 + 动画 + 执行逻辑
+     * 添加点击动画（点击立即执行逻辑，动画期间禁用点击）
      *
-     * @param debounceTime 防抖间隔，默认 500 毫秒
+     * @param onClick 点击后立即执行的逻辑
-     * @param onClick 点击后执行的逻辑（动画完成后调用）
      */
-    fun View.setDebouncedClickWithAnimation(
+    fun View.setClickWithAnimation(onClick: () -> Unit) {
-        debounceTime: Long = 500L,
-        onClick: () -> Unit
-    ) {
-        var lastClickTime = 0L
-
         this.setOnClickListener {
-            val currentTime = System.currentTimeMillis()
+            // 禁用点击，防止动画未完成重复点击
-            if (currentTime - lastClickTime < debounceTime) {
-                return@setOnClickListener
-            }
-            lastClickTime = currentTime
-
-            // 动画 + 禁用点击
             this.isEnabled = false
+
+            // 立即执行逻辑
+            onClick()
+
+            // 播放动画
             this.animate()
                 .scaleX(1.2f)
                 .scaleY(1.2f)
@@ -35,13 +28,12 @@ object AppUtils {
                         .scaleY(1f)
                         .setDuration(150)
                         .withEndAction {
+                            // 动画结束恢复点击
                             this.isEnabled = true
-                            onClick() // 执行传入的逻辑
                         }
                         .start()
                 }
                 .start()
         }
     }
-
 }