diff --git a/app/src/main/java/io/legado/app/constant/PreferKey.kt b/app/src/main/java/io/legado/app/constant/PreferKey.kt
index 07f22f159..c223f6f07 100644
--- a/app/src/main/java/io/legado/app/constant/PreferKey.kt
+++ b/app/src/main/java/io/legado/app/constant/PreferKey.kt
@@ -32,4 +32,5 @@ object PreferKey {
     const val webDavPassword = "web_dav_password"
     const val changeSourceLoadToc = "changeSourceLoadToc"
     const val chineseConverterType = "chineseConverterType"
+    const val launcherIcon = "launcherIcon"
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/data/dao/BookGroupDao.kt b/app/src/main/java/io/legado/app/data/dao/BookGroupDao.kt
index eafff6b0e..c262d60e1 100644
--- a/app/src/main/java/io/legado/app/data/dao/BookGroupDao.kt
+++ b/app/src/main/java/io/legado/app/data/dao/BookGroupDao.kt
@@ -13,8 +13,8 @@ interface BookGroupDao {
     @Query("SELECT * FROM book_groups ORDER BY `order`")
     fun liveDataAll(): LiveData<List<BookGroup>>
 
-    @get:Query("SELECT count(groupId) FROM book_groups")
-    val idsCount: Int
+    @get:Query("SELECT sum(groupId) FROM book_groups")
+    val idsSum: Int
 
     @get:Query("SELECT MAX(`order`) FROM book_groups")
     val maxOrder: Int
diff --git a/app/src/main/java/io/legado/app/help/storage/Restore.kt b/app/src/main/java/io/legado/app/help/storage/Restore.kt
index ed944012a..123332df6 100644
--- a/app/src/main/java/io/legado/app/help/storage/Restore.kt
+++ b/app/src/main/java/io/legado/app/help/storage/Restore.kt
@@ -10,6 +10,7 @@ import com.jayway.jsonpath.ParseContext
 import io.legado.app.App
 import io.legado.app.constant.PreferKey
 import io.legado.app.data.entities.*
+import io.legado.app.help.LauncherIconHelp
 import io.legado.app.help.ReadBookConfig
 import io.legado.app.utils.*
 import kotlinx.coroutines.Dispatchers.IO
@@ -106,6 +107,7 @@ object Restore {
                 edit.commit()
             }
         }
+        LauncherIconHelp.changeIcon(App.INSTANCE.getPrefString(PreferKey.launcherIcon))
     }
 
     private inline fun <reified T> fileToListT(path: String, fileName: String): List<T>? {
diff --git a/app/src/main/java/io/legado/app/ui/book/group/GroupSelectDialog.kt b/app/src/main/java/io/legado/app/ui/book/group/GroupSelectDialog.kt
index 483d47dfc..8ef086168 100644
--- a/app/src/main/java/io/legado/app/ui/book/group/GroupSelectDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/group/GroupSelectDialog.kt
@@ -162,7 +162,7 @@ class GroupSelectDialog : DialogFragment(), Toolbar.OnMenuItemClickListener {
         override fun convert(holder: ItemViewHolder, item: BookGroup, payloads: MutableList<Any>) {
             holder.itemView.apply {
                 cb_group.text = item.groupName
-                cb_group.isChecked = (groupId or item.groupId) > 0
+                cb_group.isChecked = (groupId and item.groupId) > 0
                 cb_group.setOnCheckedChangeListener { buttonView, isChecked ->
                     if (buttonView.isPressed) {
                         groupId = if (isChecked) {
diff --git a/app/src/main/java/io/legado/app/ui/book/group/GroupViewModel.kt b/app/src/main/java/io/legado/app/ui/book/group/GroupViewModel.kt
index e0fdc2b09..6045ad832 100644
--- a/app/src/main/java/io/legado/app/ui/book/group/GroupViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/group/GroupViewModel.kt
@@ -10,8 +10,8 @@ class GroupViewModel(application: Application) : BaseViewModel(application) {
     fun addGroup(groupName: String) {
         execute {
             var id = 1
-            val idsCount = App.db.bookGroupDao().idsCount
-            while (id and idsCount != 0) {
+            val idsSum = App.db.bookGroupDao().idsSum
+            while (id and idsSum != 0) {
                 id *= 2
             }
             val bookGroup = BookGroup(
diff --git a/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt b/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt
index b4d12f700..ed5e8cf9a 100644
--- a/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt
@@ -9,6 +9,7 @@ import androidx.preference.PreferenceFragmentCompat
 import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.constant.EventBus
+import io.legado.app.constant.PreferKey
 import io.legado.app.help.AppConfig
 import io.legado.app.help.LauncherIconHelp
 import io.legado.app.lib.dialogs.alert
@@ -47,7 +48,7 @@ class ThemeConfigFragment : PreferenceFragmentCompat(), SharedPreferences.OnShar
     override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
         sharedPreferences ?: return
         when (key) {
-            "launcherIcon" -> LauncherIconHelp.changeIcon(getPrefString(key))
+            PreferKey.launcherIcon -> LauncherIconHelp.changeIcon(getPrefString(key))
             "transparentStatusBar" -> {
                 recreateActivities()
             }