Finish FlutterActivity from Flutter when integrating Flutter to native host app [Add2App]
Solution found:
SystemChannels.platform.invokeMethod<void>('SystemNavigator.pop');Removes the topmost Flutter instance, presenting what was before it.
On Android, removes this activity from the stack and returns to the previous activity.
Documentation here: api reference
...leading: BackButton( onPressed: () => { if (Navigator.canPop(context)) {Navigator.pop(context)} else {SystemNavigator.pop()} }, )...