Mostrar la versión en la app

android/app/src/main/kotlin/es/freetimelab/farolero/MainActivity.kt

@@ -1,5 +1,37 @@
 package es.freetimelab.farolero
 
+import android.os.Build
+import io.flutter.embedding.engine.FlutterEngine
 import io.flutter.embedding.android.FlutterActivity
+import io.flutter.plugin.common.MethodChannel
 
-class MainActivity: FlutterActivity()
+class MainActivity: FlutterActivity() {
+    override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
+        super.configureFlutterEngine(flutterEngine)
+
+        MethodChannel(
+            flutterEngine.dartExecutor.binaryMessenger,
+            "farolero/app_info"
+        ).setMethodCallHandler { call, result ->
+            if (call.method != "getAppVersion") {
+                result.notImplemented()
+                return@setMethodCallHandler
+            }
+
+            val info = packageManager.getPackageInfo(packageName, 0)
+            val versionCode = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+                info.longVersionCode
+            } else {
+                @Suppress("DEPRECATION")
+                info.versionCode.toLong()
+            }
+
+            result.success(
+                mapOf(
+                    "versionName" to (info.versionName ?: ""),
+                    "versionCode" to versionCode,
+                )
+            )
+        }
+    }
+}

lib/pantallas/pantalla_ajustes.dart

@@ -3,6 +3,7 @@ import 'package:farolero/l10n/generated/app_localizations.dart';
 import 'package:provider/provider.dart';
 import '../servicios/servicio_idioma.dart';
 import '../servicios/servicio_perfil_usuario.dart';
+import '../servicios/servicio_version_app.dart';
 import '../tema/componentes_farolero.dart';
 import '../tema/tema_app.dart';
 
@@ -16,6 +17,13 @@ class PantallaAjustes extends StatefulWidget {
 class _PantallaAjustesState extends State<PantallaAjustes> {
   double _volumen = 0.7;
   bool _vibracion = true;
+  late final Future<String> _versionApp;
+
+  @override
+  void initState() {
+    super.initState();
+    _versionApp = ServicioVersionApp.obtenerVersion();
+  }
 
   @override
   Widget build(BuildContext context) {
@@ -129,18 +137,29 @@ class _PantallaAjustesState extends State<PantallaAjustes> {
                     Text(l10n.about,
                         style: Theme.of(context).textTheme.titleLarge),
                     const SizedBox(height: 12),
-                    _filaInfo(context, l10n.version, '1.0.0'),
+                    FutureBuilder<String>(
+                      future: _versionApp,
+                      builder: (context, snapshot) {
+                        return _filaInfo(
+                          context,
+                          l10n.version,
+                          snapshot.data ?? '-',
+                        );
+                      },
+                    ),
                     const SizedBox(height: 8),
                     _filaInfo(context, l10n.developer, 'FreeTTimeLab'),
                     const SizedBox(height: 8),
                     SizedBox(
                       width: double.infinity,
                       child: OutlinedButton(
-                        onPressed: () {
+                        onPressed: () async {
+                          final version = await _versionApp;
+                          if (!context.mounted) return;
                           showLicensePage(
                             context: context,
                             applicationName: 'Farolero',
-                            applicationVersion: '1.0.0',
+                            applicationVersion: version,
                           );
                         },
                         child: Text(l10n.licenses),

lib/servicios/servicio_version_app.dart

@@ -0,0 +1,29 @@
+import 'package:flutter/services.dart';
+
+class ServicioVersionApp {
+  static const _channel = MethodChannel('farolero/app_info');
+
+  static Future<String> obtenerVersion() async {
+    final Map<String, dynamic>? info;
+    try {
+      info = await _channel.invokeMapMethod<String, dynamic>(
+        'getAppVersion',
+      );
+    } on PlatformException {
+      return '-';
+    } on MissingPluginException {
+      return '-';
+    }
+
+    final versionName = info?['versionName']?.toString();
+    final versionCode = info?['versionCode']?.toString();
+
+    if (versionName == null || versionName.isEmpty) {
+      return '-';
+    }
+    if (versionCode == null || versionCode.isEmpty) {
+      return versionName;
+    }
+    return '$versionName+$versionCode';
+  }
+}