You have created the app using Flutter. Now, you want to change the app display name from test_app to Test App

Please follow the below steps.

Step 1: Go to the folder android/app/src/main

Step 2: Open the file AndroidManifest.xml

Step 3: Now change the below android:label

android:name=”io.flutter.app.XXXXXX”android:label=”YourAppName“

android:icon=”@mipmap/ic_launcher”>

Also you can follow the below release

• Preparing an Android App for Release