diff --git a/app/src/main/kotlin/cn/super12138/todo/views/BaseActivity.kt b/app/src/main/kotlin/cn/super12138/todo/views/BaseActivity.kt
index 250722f..ae58b16 100644
--- a/app/src/main/kotlin/cn/super12138/todo/views/BaseActivity.kt
+++ b/app/src/main/kotlin/cn/super12138/todo/views/BaseActivity.kt
@@ -4,6 +4,7 @@ import android.os.Build
 import android.os.Bundle
 import android.view.WindowManager
 import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatDelegate
 import cn.super12138.todo.R
 import cn.super12138.todo.ToDoApplication
 import cn.super12138.todo.logic.Repository
@@ -17,6 +18,17 @@ open class BaseActivity : AppCompatActivity() {
         }
         // enableEdgeToEdge()
         super.onCreate(savedInstanceState)
+
+        // 深色模式
+        val isDarkMode = Repository.getPreferenceString(this, "dark_mode", "0")
+        when (isDarkMode) {
+            "0" -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM)
+
+            "1" -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES)
+
+            "2" -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO)
+        }
+
         // 适配刘海屏
         val lp = window.attributes
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
diff --git a/app/src/main/kotlin/cn/super12138/todo/views/main/MainActivity.kt b/app/src/main/kotlin/cn/super12138/todo/views/main/MainActivity.kt
index 656115f..9af2fcb 100644
--- a/app/src/main/kotlin/cn/super12138/todo/views/main/MainActivity.kt
+++ b/app/src/main/kotlin/cn/super12138/todo/views/main/MainActivity.kt
@@ -47,16 +47,7 @@ class MainActivity : BaseActivity() {
                 }
                 .show()
         }*/
-
-        val isDarkMode = Repository.getPreferenceString(this, "dark_mode", "0")
         val isSecureMode = Repository.getPreferenceBoolean(this, "secure_mode", false)
-        when (isDarkMode) {
-            "0" -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM)
-
-            "1" -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES)
-
-            "2" -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO)
-        }
         when (isSecureMode) {
             true -> window.setFlags(
                 WindowManager.LayoutParams.FLAG_SECURE,
diff --git a/app/src/main/kotlin/cn/super12138/todo/views/settings/SettingsActivity.kt b/app/src/main/kotlin/cn/super12138/todo/views/settings/SettingsActivity.kt
index f168e65..ff61a8d 100644
--- a/app/src/main/kotlin/cn/super12138/todo/views/settings/SettingsActivity.kt
+++ b/app/src/main/kotlin/cn/super12138/todo/views/settings/SettingsActivity.kt
@@ -58,7 +58,7 @@ class SettingsActivity : BaseActivity() {
                 Repository.getPreferenceBoolean(ToDoApplication.context, "dev_mode", false)
 
             findPreference<ListPreference>("dark_mode")?.apply {
-                setOnPreferenceChangeListener { preference, newValue ->
+                setOnPreferenceChangeListener { _, newValue ->
                     when (newValue) {
                         "0" -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM)
 
@@ -72,7 +72,7 @@ class SettingsActivity : BaseActivity() {
             }
 
             findPreference<SwitchPreferenceCompat>("secure_mode")?.apply {
-                setOnPreferenceChangeListener { preference, newValue ->
+                setOnPreferenceChangeListener { _, newValue ->
                     when (newValue) {
                         true -> activity?.window?.setFlags(
                             WindowManager.LayoutParams.FLAG_SECURE,
diff --git a/app/src/main/kotlin/cn/super12138/todo/views/todo/ToDoFragment.kt b/app/src/main/kotlin/cn/super12138/todo/views/todo/ToDoFragment.kt
index 00dac8e..b714676 100644
--- a/app/src/main/kotlin/cn/super12138/todo/views/todo/ToDoFragment.kt
+++ b/app/src/main/kotlin/cn/super12138/todo/views/todo/ToDoFragment.kt
@@ -28,7 +28,6 @@ class ToDoFragment : Fragment() {
 
     private lateinit var binding: FragmentTodoBinding
     private lateinit var ToDoDialogBinding: DialogAddTodoBinding
-    private val todoList = ArrayList<ToDo>()
 
     override fun onCreateView(
         inflater: LayoutInflater,
@@ -52,31 +51,19 @@ class ToDoFragment : Fragment() {
             WindowInsetsCompat.CONSUMED
         }*/
 
-        val layoutManager = LinearLayoutManager(ToDoApplication.context)
-        binding.todoList.layoutManager = layoutManager
-        val adapter = ToDoAdapter(todoList, requireActivity())
-        binding.todoList.adapter = adapter
-
         val progressViewModel =
             ViewModelProvider(requireActivity()).get(ProgressFragmentViewModel::class.java)
         val todoViewModel =
             ViewModelProvider(requireActivity()).get(ToDoFragmentViewModel::class.java)
 
-        lifecycleScope.launch {
-            val todos = Repository.getAllUncomplete()
-            var count = 0
-            for (todo in todos) {
-                todoList.add(ToDo(todo.uuid, todo.content, todo.subject))
-                count++
-            }
-            if (count == 0) {
-                todoViewModel.emptyTipVis.value = View.VISIBLE
-            } else {
-                todoViewModel.emptyTipVis.value = View.GONE
-            }
-        }
+        val todoList = todoViewModel.todoList
+
+        val layoutManager = LinearLayoutManager(ToDoApplication.context)
+        binding.todoList.layoutManager = layoutManager
+        val adapter = ToDoAdapter(todoList, requireActivity())
+        binding.todoList.adapter = adapter
 
-        if (todoList.size == 0) {
+        if (todoList.isEmpty()) {
             todoViewModel.emptyTipVis.value = View.VISIBLE
         }
 
@@ -158,7 +145,7 @@ class ToDoFragment : Fragment() {
                 MaterialAlertDialogBuilder(it1)
                     .setTitle(R.string.warning)
                     .setMessage(R.string.delete_confirm)
-                    .setPositiveButton(R.string.ok) { dialog, which ->
+                    .setPositiveButton(R.string.ok) { _, _ ->
                         todoList.clear()
                         lifecycleScope.launch {
                             Repository.deleteAll()
diff --git a/app/src/main/kotlin/cn/super12138/todo/views/todo/ToDoFragmentViewModel.kt b/app/src/main/kotlin/cn/super12138/todo/views/todo/ToDoFragmentViewModel.kt
index 1902b67..7d315b3 100644
--- a/app/src/main/kotlin/cn/super12138/todo/views/todo/ToDoFragmentViewModel.kt
+++ b/app/src/main/kotlin/cn/super12138/todo/views/todo/ToDoFragmentViewModel.kt
@@ -3,8 +3,33 @@ package cn.super12138.todo.views.todo
 import android.view.View
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import cn.super12138.todo.logic.Repository
+import cn.super12138.todo.logic.model.ToDo
+import kotlinx.coroutines.launch
 
 class ToDoFragmentViewModel : ViewModel() {
     val emptyTipVis = MutableLiveData<Int>(View.GONE)
     val refreshData = MutableLiveData<Int>(0)
+    val todoList = ArrayList<ToDo>()
+
+    init {
+        loadToDos()
+    }
+
+    private fun loadToDos(){
+        viewModelScope.launch {
+            val todos = Repository.getAllUncomplete()
+            var count = 0
+            for (todo in todos) {
+                todoList.add(ToDo(todo.uuid, todo.content, todo.subject))
+                count++
+            }
+            if (count == 0) {
+                emptyTipVis.value = View.VISIBLE
+            } else {
+                emptyTipVis.value = View.GONE
+            }
+        }
+    }
 }
\ No newline at end of file