setState() called after dispose()

Question

When I click the raised button, the timepicker is showing up. Now if I wait like 5 seconds and then confirm the time this error will occur setState() called after d

Answer 1

Try this

Widget build(BuildContext context) {
    return new RaisedButton(
        child: new Text("${selectedDate.hour} ${selectedDate.minute}"),
        onPressed: () async {
            await initTimePicker();
        }
    );
}