FlutterActivity vs FlutterFragmentActivity

Question

I was trying to implement local_auth package into my Flutter app.

in the documentation, it was mentioned that it will have to use FlutterFragmentActivity instead of FlutterActivity in my MainActivity class.

So I wanted to know what are the main differences between FlutterFragmentActivity and FlutterActivity and how both impact app's performance?

:) as I don't want to make a change and break the app in production.

Alba

FlutterFragmentActivity exists because there are some Android APIs in the ecosystem that only accept a FragmentActivity. If a FragmentActivity is not required, you should consider using a regular FlutterActivity instead, because FlutterActivity is considered to be the standard, canonical implementation of a Flutter Activity. – Wideawake

Answer 1

A FragmentActivity is a subclass of Activity that was built for the Android Support Package.

The FragmentActivity class adds a couple of new methods to ensure compatibility with older versions of Android, but other than that, there really isn't much of a difference between the two.

https://developer.android.com/topic/libraries/support-library

Info from this thread https://mcmap.net/q/115968/-difference-between-activity-and-fragmentactivity

So, it doesn't impact performance.

Claudineclaudio

Answer 2

In my apps, I see those activities act differently when you press back button (or perform back gesture) at the root screen of your app:

FlutterActivity: Your app will be closed.

FlutterFragmentActivity : Your app will be move to background.

Feathering