diff --git a/app/src/main/java/io/legado/app/base/BaseDialogFragment.kt b/app/src/main/java/io/legado/app/base/BaseDialogFragment.kt
index 468dd4c95..555ef1306 100644
--- a/app/src/main/java/io/legado/app/base/BaseDialogFragment.kt
+++ b/app/src/main/java/io/legado/app/base/BaseDialogFragment.kt
@@ -8,19 +8,12 @@ import io.legado.app.help.coroutine.Coroutine
 import io.legado.app.lib.theme.ThemeStore
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
+import kotlinx.coroutines.MainScope
+import kotlinx.coroutines.cancel
 import kotlin.coroutines.CoroutineContext
 
 
-abstract class BaseDialogFragment : DialogFragment(), CoroutineScope {
-    override val coroutineContext: CoroutineContext
-        get() = job + Dispatchers.Main
-    private lateinit var job: Job
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        job = Job()
-    }
+abstract class BaseDialogFragment : DialogFragment(), CoroutineScope by MainScope() {
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
@@ -41,7 +34,7 @@ abstract class BaseDialogFragment : DialogFragment(), CoroutineScope {
 
     override fun onDestroy() {
         super.onDestroy()
-        job.cancel()
+        cancel()
     }
 
     fun <T> execute(
diff --git a/app/src/main/java/io/legado/app/base/BaseFragment.kt b/app/src/main/java/io/legado/app/base/BaseFragment.kt
index 3b3f3dd28..c95a5ab67 100644
--- a/app/src/main/java/io/legado/app/base/BaseFragment.kt
+++ b/app/src/main/java/io/legado/app/base/BaseFragment.kt
@@ -3,7 +3,10 @@ package io.legado.app.base
 import android.annotation.SuppressLint
 import android.content.res.Configuration
 import android.os.Bundle
-import android.view.*
+import android.view.Menu
+import android.view.MenuInflater
+import android.view.MenuItem
+import android.view.View
 import androidx.appcompat.view.SupportMenuInflater
 import androidx.appcompat.widget.Toolbar
 import androidx.fragment.app.Fragment
@@ -11,14 +14,13 @@ import io.legado.app.R
 import io.legado.app.ui.widget.TitleBar
 import io.legado.app.utils.applyTint
 import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
-import kotlin.coroutines.CoroutineContext
+import kotlinx.coroutines.MainScope
+import kotlinx.coroutines.cancel
 
 @Suppress("MemberVisibilityCanBePrivate")
 abstract class BaseFragment(layoutID: Int) : Fragment(layoutID),
-    CoroutineScope {
-    lateinit var job: Job
+    CoroutineScope by MainScope() {
+
     var supportToolbar: Toolbar? = null
         private set
 
@@ -26,18 +28,6 @@ abstract class BaseFragment(layoutID: Int) : Fragment(layoutID),
         @SuppressLint("RestrictedApi")
         get() = SupportMenuInflater(requireContext())
 
-    override val coroutineContext: CoroutineContext
-        get() = job + Dispatchers.Main
-
-    override fun onCreateView(
-        inflater: LayoutInflater,
-        container: ViewGroup?,
-        savedInstanceState: Bundle?
-    ): View? {
-        job = Job()
-        return super.onCreateView(inflater, container, savedInstanceState)
-    }
-
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         onMultiWindowModeChanged()
@@ -66,7 +56,7 @@ abstract class BaseFragment(layoutID: Int) : Fragment(layoutID),
 
     override fun onDestroy() {
         super.onDestroy()
-        job.cancel()
+        cancel()
     }
 
     fun setSupportToolbar(toolbar: Toolbar) {