unify platform file name

Signed-off-by: dom <githubaccount56556@proton.me>

lib/pages/about/view.dart

@@ -80,7 +80,7 @@ class _AboutPageState extends State<AboutPage> {
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
-    const style = TextStyle(fontSize: 14);
+    const style = TextStyle(fontSize: 15);
     final outline = theme.colorScheme.outline;
     final subTitleStyle = TextStyle(fontSize: 13, color: outline);
     final showAppBar = widget.showAppBar;
@@ -266,8 +266,7 @@ Commit Hash: ${BuildConfig.commitHash}''',
             onTap: () => showImportExportDialog<Map<String, dynamic>>(
               context,
               title: '设置',
-              localFileName: () =>
-                  'setting_${context.isTablet ? 'pad' : 'phone'}',
+              localFileName: () => 'setting_${context.platformName}',
               label: GStorage.setting.name,
               onExport: GStorage.exportAllSettings,
               onImport: GStorage.importAllJsonSettings,

lib/pages/webdav/webdav.dart

@@ -3,11 +3,11 @@ import 'dart:convert';
 import 'package:PiliPlus/common/constants.dart';
 import 'package:PiliPlus/common/widgets/pair.dart';
 import 'package:PiliPlus/utils/extension/context_ext.dart';
-import 'package:PiliPlus/utils/platform_utils.dart';
 import 'package:PiliPlus/utils/storage.dart';
 import 'package:PiliPlus/utils/storage_pref.dart';
 import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
-import 'package:get/get.dart';
+import 'package:get/get_core/src/get_main.dart';
+import 'package:get/get_navigation/src/extension_navigation.dart';
 import 'package:webdav_client/webdav_client.dart' as webdav;
 
 class WebDav {
@@ -53,12 +53,7 @@ class WebDav {
   }
 
   String _getFileName() {
-    final type = PlatformUtils.isDesktop
-        ? 'desktop'
-        : Get.context!.isTablet
-        ? 'pad'
-        : 'phone';
-    return 'piliplus_settings_$type.json';
+    return 'piliplus_settings_${Get.context!.platformName}.json';
   }
 
   Future<void> backup() async {