Duration Picker for flutter

A little widget for picking durations. Heavily inspired from the Material Design time picker widget.

Example Usage:

dependencies:
  flutter_duration_picker: "^1.0.0"
import 'package:flutter/material.dart';
import 'package:flutter_duration_picker/flutter_duration_picker.dart';

void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'Duration Picker Demo',
      theme: new ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: new MyHomePage(title: 'Duration Picker Demo'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => new _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  Duration _duration = Duration(hours: 0, minutes: 0);
  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        title: new Text(widget.title),
      ),
      body: new Center(
        child: new Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            new Expanded(
		// Use it from the context of a stateful widget, passing in
		// and saving the duration as a state variable.
                child: DurationPicker(
              duration: _duration,
              onChange: (val) {
                this.setState(() => _duration = val);
              },
              snapToMins: 5.0,
            ))
          ],
        ),
      ),
      floatingActionButton: Builder(
          builder: (BuildContext context) => new FloatingActionButton(
                onPressed: () async {
		  // Use it as a dialog, passing in an optional initial time
		  // and returning a promise that resolves to the duration
		  // chosen when the dialog is accepted. Null when cancelled.
                  Duration resultingDuration = await showDurationPicker(
                    context: context,
                    initialTime: new Duration(minutes: 30),
                  );
                  Scaffold.of(context).showSnackBar(new SnackBar(
                      content: new Text("Chose duration: $resultingDuration")));
                },
                tooltip: 'Popup Duration Picker',
                child: new Icon(Icons.add),
              )),
    );
  }
}

Libraries

flutter_duration_picker

Dart

VM

dart:ffi
Foreign Function Interface for interoperability with the C programming language. [...]

Web

dart:html
HTML elements and other resources for web-based applications that need to interact with the browser and the DOM (Document Object Model). [...]
dart:js
Low-level support for interoperating with JavaScript. [...]
dart:js_util
Utility methods to efficiently manipulate typed JSInterop objects in cases where the name to call is not known at runtime. You should only use these methods when the same effect cannot be achieved with @JS annotations. These methods would be extension methods on JSObject if Dart supported extension methods.