opt.: auto switch status bar

lib/view/page/full_screen.dart

@@ -42,7 +42,7 @@ class _FullScreenPageState extends State<FullScreenPage> with AfterLayoutMixin {
   @override
   void initState() {
     super.initState();
-    hideStatusBar();
+    switchStatusBar(hide: true);
     _timer = Timer.periodic(const Duration(minutes: 1), (_) {
       if (mounted) {
         setState(() {});

lib/view/page/home.dart

@@ -50,6 +50,7 @@ class _HomePageState extends State<HomePage>
   @override
   void initState() {
     super.initState();
+    switchStatusBar(hide: false);
     WidgetsBinding.instance.addObserver(this);
     _selectIndex.value = _setting.launchPage.fetch()!;
     // avoid index out of range

lib/view/widget/card_dialog.dart

@@ -1,26 +0,0 @@
-import 'package:flutter/material.dart';
-
-class CardDialog extends StatelessWidget {
-  const CardDialog(
-      {Key? key, this.title, this.content, this.actions, this.padding})
-      : super(key: key);
-
-  final Widget? content;
-  final List<Widget>? actions;
-  final Widget? title;
-  final EdgeInsets? padding;
-
-  @override
-  Widget build(BuildContext context) {
-    return AlertDialog(
-      contentPadding: padding,
-      actionsPadding: const EdgeInsets.all(7),
-      shape: const RoundedRectangleBorder(
-        borderRadius: BorderRadius.all(Radius.circular(20.0)),
-      ),
-      title: title,
-      content: content,
-      actions: actions,
-    );
-  }
-}