Flutter how to programmatically exit the app

Question

How can I programmatically close a Flutter application. I\'ve tried popping the only screen but that results in a black screen.

Answer 1

Below worked perfectly with me in both Android and iOS import 'dart:io';

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        title: new Text(widget.title),
      ),
      body: new ... (...),
          floatingActionButton: new FloatingActionButton(
            onPressed: ()=> SystemNavigator.pop(),
            tooltip: 'Close app',
            child: new Icon(Icons.close),
          ), 
    );
  }