supporting import/export of grid

lib/app_list.dart

@@ -7,14 +7,20 @@ import 'package:flutter/material.dart';
 // import 'package:json_serializable/json_serializable.dart';
 
 class CacheData {
-  final List<GridApp> grid;
-  List<App> apps;
+  List<GridApp> grid;
+  Map<String, App> apps;
 
   CacheData(this.grid, this.apps);
 
-  factory CacheData.fromJson(Map<String, dynamic> json) => CacheData(
-      (json['grid'] as List).map((x) => gridAppFromJson(x)).toList(),
-      (json['apps'] as List).map((x) => App.fromJson(x)).toList());
+  factory CacheData.fromJson(Map<String, dynamic> json) {
+    var apps = (json['apps'] as Map<String, dynamic>)
+        .map((x, y) => MapEntry(x, App.fromJson(y)));
+
+    List<GridApp> grid =
+        (json['grid'] as List).map((x) => gridAppFromJson(x)).toList();
+
+    return CacheData(grid, apps);
+  }
 
   static gridAppToJson(GridApp gridApp) {
     return gridApp.toJson();
@@ -27,23 +33,23 @@ class CacheData {
   Map<String, dynamic> toJson() {
     return {
       'grid': grid.map((x) => gridAppToJson(x)).toList(),
-      'apps': apps.map((x) => x.toJson()).toList()
+      'apps': apps.map((x, y) => MapEntry(x, y.toJson()))
     };
   }
 }
 
 class GridApp {
-  final App app;
+  final String packageName;
   String? iconSlug;
 
-  GridApp(this.app, this.iconSlug);
+  GridApp(this.packageName, this.iconSlug);
 
   factory GridApp.fromJson(Map<String, dynamic> json) {
-    return GridApp(App.fromJson(json['app']), json['iconSlug']);
+    return GridApp(json['packageName'], json['iconSlug']);
   }
 
   Map<String, dynamic> toJson() {
-    return {'app': app.toJson(), 'iconSlug': iconSlug};
+    return {'packageName': packageName, 'iconSlug': iconSlug};
   }
 }
 
@@ -78,7 +84,7 @@ class AppListCacher extends ChangeNotifier {
     }
   }
 
-  Future<List<App>> getAppList() async {
+  Future<Map<String, App>> getAppList() async {
     if (data == null) {
       await readCache();
     }
@@ -107,12 +113,23 @@ class AppListCacher extends ChangeNotifier {
     notifyListeners();
   }
 
+  setGridCache(List<GridApp> apps) async {
+    if (data == null) {
+      await updateCache();
+    }
+    data!.grid = apps;
+    flushChanges();
+  }
+
   Future updateCache() async {
-    print("updating cache");
-    List<App> apps = (await _readApps())
+    List<App> appList = (await _readApps())
         .where((x) => x.enabled)
         .map((x) => App.fromApplication(x))
         .toList();
+    Map<String, App> apps = {};
+    for (final app in appList) {
+      apps[app.packageName] = app;
+    }
     if (data == null) {
       data = CacheData([], apps);
     } else {

lib/main.dart

@@ -1,7 +1,11 @@
+import 'dart:convert';
+import 'dart:io';
+
 import 'package:android_intent_plus/android_intent.dart';
 import 'package:android_intent_plus/flag.dart';
 import 'package:flutter/material.dart';
 import 'package:device_apps/device_apps.dart';
+import 'package:flutter_file_dialog/flutter_file_dialog.dart';
 import 'package:nkit_launcher/app_icon.dart';
 import 'package:provider/provider.dart';
 import 'package:flutter_iconpicker/flutter_iconpicker.dart';
@@ -143,6 +147,28 @@ class _MyHomePageState extends State<MyHomePage> {
               switch (action) {
                 case GlobalAction.refreshApps:
                   await appList.updateCache();
+                case GlobalAction.exportGridJson:
+                  if (appList.data == null) {
+                    return;
+                  }
+                  var grid = appList.data!.grid.map((x) => x.toJson()).toList();
+                  final body = json.encode(grid);
+                  final params = SaveFileDialogParams(
+                      data: const Utf8Encoder().convert(body),
+                      fileName: "nkit_launcher_grid.json");
+                  await FlutterFileDialog.saveFile(params: params);
+                case GlobalAction.importGridJson:
+                  var file = await FlutterFileDialog.pickFile(
+                      params: const OpenFileDialogParams());
+                  if (file != null) {
+                    var fileContent = File(file).readAsStringSync();
+                    var content = json.decode(fileContent);
+
+                    appList.setGridCache((content as List)
+                        .map((x) => GridApp.fromJson(x))
+                        .toList());
+                  }
+                  await appList.updateCache();
                 case null:
               }
             },
@@ -195,8 +221,10 @@ class IconAppGridWidget extends StatelessWidget {
       }
 
       longPressActionHandler(int index) async {
-        GridIconAction? action = await askGridIconAction(
-            context, appList.data!.grid[index].app.appName);
+        var item = appList.data!.grid[index];
+        var app = appList.data!.apps[item.packageName];
+        GridIconAction? action =
+            await askGridIconAction(context, app?.appName ?? "Unknown");
         switch (action) {
           case GridIconAction.selectIcon:
             IconData? icon =
@@ -239,7 +267,7 @@ class IconAppGridWidget extends StatelessWidget {
         button = IconButton(
           icon: icon,
           onPressed: () {
-            DeviceApps.openApp(app.app.packageName);
+            DeviceApps.openApp(app.packageName);
           },
         );
 
@@ -352,7 +380,7 @@ Future<GridIconAction?> askGridIconAction(
       });
 }
 
-enum GlobalAction { refreshApps }
+enum GlobalAction { refreshApps, exportGridJson, importGridJson }
 
 Future<GlobalAction?> askGlobalAction(BuildContext context) async {
   return await showDialog<GlobalAction>(
@@ -362,6 +390,14 @@ Future<GlobalAction?> askGlobalAction(BuildContext context) async {
           SimpleDialogOption(
               onPressed: () => Navigator.pop(context, GlobalAction.refreshApps),
               child: const Text('Refresh Apps')),
+          SimpleDialogOption(
+              onPressed: () =>
+                  Navigator.pop(context, GlobalAction.exportGridJson),
+              child: const Text('Export Grid Action')),
+          SimpleDialogOption(
+              onPressed: () =>
+                  Navigator.pop(context, GlobalAction.importGridJson),
+              child: const Text('Import Grid Action')),
         ];
         return SimpleDialog(children: children);
       });
@@ -399,7 +435,7 @@ class AppListState extends State<AppListWidget> {
           );
         }
 
-        List<App> apps = appList.data!.apps.toList();
+        List<App> apps = appList.data!.apps.values.toList();
         if (widget.filterKey == null) {
           return const Row();
         }
@@ -439,7 +475,7 @@ class AppListState extends State<AppListWidget> {
                     );
                     intent.launch();
                   case AppAction.addToGrid:
-                    appList.data!.grid.add(GridApp(app, null));
+                    appList.data!.grid.add(GridApp(app.packageName, null));
                     await appList.flushChanges();
                   case null:
                 }

pubspec.lock

@@ -198,6 +198,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_file_dialog:
+    dependency: "direct main"
+    description:
+      name: flutter_file_dialog
+      sha256: "9344b8f07be6a1b6f9854b723fb0cf84a8094ba94761af1d213589d3cb087488"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
   flutter_iconpicker:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -40,6 +40,7 @@ dependencies:
   android_intent_plus: ^5.0.1
   provider: ^6.1.2
   flutter_iconpicker: ^3.4.4
+  flutter_file_dialog: ^3.0.2
 
 dev_dependencies:
   flutter_test: