Introduction to add Flutter to an existing Android App

It’s sometimes not practical to rewrite your entire application in Flutter all at once. For those situations, Flutter can be integrated into your existing application piecemeal, as a library or module. That module can then be imported into your Android app to render a part of your app’s UI in Flutter.

Get Started

Add a single Flutter screen

First, we need to add FlutterActivity to AndroidManifest.xml.

Next, we use a cached FlutterEngine to launch FlutterActivity.

Add a Flutter Fragment

We just add a FlutterFragment to an Activity with a cached FlutterEngine.

Add a Flutter View

FlutterView can be added to any Android native view.

First, we need to create a cached FlutterEngine.

Next, when the FlutterView is added to a resumed Activity’s view hierarchy and is visible, call attachToFlutterEngine.

Add a Flutter View in RecyclerView

Thanks for reading this and I hope this helped you add Flutter to your existing Android App project. You can find the code for this tutorial on my GitHub.

davechao/add_to_app