Añadido cambios de los records

.gitignore

@@ -44,3 +44,6 @@ app.*.map.json
 /android/app/profile
 /android/app/release
 /android/app/.cxx
+
+# Manual
+./pubspec.lock

lib/modelo/peponator_record.dart

@@ -4,4 +4,23 @@ class PeponatorRecord {
   final DateTime fecha;
 
   PeponatorRecord({required this.jugador, required this.puntuacion, required this.fecha});
+
+  factory PeponatorRecord.desdeJson(Map<String, dynamic> json) {
+    return PeponatorRecord(
+        jugador: json['jugador'],
+        puntuacion: json['puntuacion'],
+        fecha: DateTime.parse(json['fecha'])
+    );
+  }
+
+  String aJson(){
+    var json = '''
+{
+  "jugador": "$jugador",
+  "puntuacion": $puntuacion,
+  "fecha": "$fecha"
+}
+''';
+    return json;
+  }
 }
\ No newline at end of file

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -5,8 +5,10 @@
 import FlutterMacOS
 import Foundation
 
+import path_provider_foundation
 import shared_preferences_foundation
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+  PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
   SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
 }

pubspec.yaml

@@ -35,6 +35,7 @@ dependencies:
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^1.0.8
   shared_preferences: ^2.5.3
+  path_provider: ^2.1.5
 
 dev_dependencies:
   flutter_test: