Flutter background system

// Obtain shared preferences.
final prefs = await SharedPreferences.getInstance();

short_uuids | Dart Package

Navigator.pop()

1st screen

void goToSecondScreen()async {
 var result = await Navigator.push(_context, new MaterialPageRoute(
 builder: (BuildContext context) => new SecondScreen(context),
 fullscreenDialog: true,)
);
Scaffold.of(_context).showSnackBar(SnackBar(content: Text("$result"),duration: Duration(seconds: 3),));
}

2nd screen

Navigator.pop(context, "Hello world");

Time

timestamp

void main() {
  print(DateTime.now().millisecondsSinceEpoch);
}

from timestamp

var date = DateTime.fromMillisecondsSinceEpoch(timestamp);
date.toLocal();