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,
+                )
+            )
+        }
+    }
+}