updatet things in pubspec

filcnaplo/android/app/src/main/AndroidManifest.xml

@@ -1,6 +1,6 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools" package="hu.refilc.naplo">
-    <application android:label="reFilc" tools:replace="android:label" android:icon="@mipmap/ic_launcher"
+    <application android:name="${applicationName}" android:label="reFilc" tools:replace="android:label" android:icon="@mipmap/ic_launcher"
         android:requestLegacyExternalStorage="true">
         <activity android:exported="true" android:name=".MainActivity"
             android:launchMode="singleTop" android:theme="@style/LaunchTheme"

filcnaplo/android/app/src/main/java/hu/filc/naplo/MainActivity.java

@@ -1,18 +1,9 @@
 package hu.refilc.naplo;
 
-import android.os.Bundle;
-
 import io.flutter.embedding.android.FlutterActivity;
-import io.flutter.plugins.GeneratedPluginRegistrant;
 
 import io.flutter.embedding.engine.FlutterEngine;
 
 public class MainActivity extends FlutterActivity {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-
-        GeneratedPluginRegistrant.registerWith(new FlutterEngine(this));
-    }
+    
 }