feat: 优化代码

app/src/main/java/io/legado/app/help/AppConfig.kt

@@ -115,6 +115,12 @@ object AppConfig {
             App.INSTANCE.putPrefBoolean("bookGroupAudio", value)
         }
 
+    var bookGroupNoneShow: Boolean
+        get() = App.INSTANCE.getPrefBoolean("bookGroupNone", false)
+        set(value) {
+            App.INSTANCE.putPrefBoolean("bookGroupNone", value)
+        }
+
     var elevation: Int
         get() = App.INSTANCE.getPrefInt("elevation", -1)
         set(value) {

app/src/main/java/io/legado/app/ui/book/group/GroupManageDialog.kt

@@ -99,6 +99,8 @@ class GroupManageDialog : DialogFragment(), Toolbar.OnMenuItemClickListener {
                 .isChecked = AppConfig.bookGroupLocalShow
             it.findItem(R.id.menu_group_audio)
                 .isChecked = AppConfig.bookGroupAudioShow
+            it.findItem(R.id.menu_group_none)
+                .isChecked = AppConfig.bookGroupNoneShow
         }
     }
 
@@ -120,6 +122,10 @@ class GroupManageDialog : DialogFragment(), Toolbar.OnMenuItemClickListener {
                 AppConfig.bookGroupAudioShow = item.isChecked
                 callBack?.upGroup()
             }
+            R.id.menu_group_none -> {
+                item.isChecked = !item.isChecked
+                AppConfig.bookGroupNoneShow = item.isChecked
+            }
         }
         return true
     }

app/src/main/java/io/legado/app/ui/book/group/GroupSelectDialog.kt

@@ -94,8 +94,10 @@ class GroupSelectDialog : DialogFragment(), Toolbar.OnMenuItemClickListener {
         tool_bar.inflateMenu(R.menu.book_group_manage)
         tool_bar.menu.applyTint(requireContext(), Theme.getTheme())
         tool_bar.setOnMenuItemClickListener(this)
+        tool_bar.menu.findItem(R.id.menu_group_all).isVisible = false
         tool_bar.menu.findItem(R.id.menu_group_local).isVisible = false
         tool_bar.menu.findItem(R.id.menu_group_audio).isVisible = false
+        tool_bar.menu.findItem(R.id.menu_group_none).isVisible = false
         adapter = GroupAdapter(requireContext())
         recycler_view.layoutManager = LinearLayoutManager(requireContext())
         recycler_view.addItemDecoration(VerticalDivider(requireContext()))

app/src/main/res/menu/book_group_manage.xml

@@ -31,4 +31,11 @@
         android:checked="true"
         app:showAsAction="never" />
 
+    <item
+        android:id="@+id/menu_group_none"
+        android:title="@string/no_group"
+        android:checkable="true"
+        android:checked="true"
+        app:showAsAction="never" />
+
 </menu>