speedometer 1.0.5

  • README.md
  • Example
  • Installing
  • Versions
  • new61


A little widget that given an Observable gives you an updated SpeedOMeter.

Getting Started

You should ensure that you add the following dependency in your Flutter project.

 speedometer: "^1.0.1"

You should then run flutter packages upgrade or update your packages in IntelliJ.

In your Dart code, to use it:

import 'package:speedometer/speedometer.dart';


An example can be found in the example folder. Check it out.

[0.0.1] - TODO: Add release date.

  • TODO: Describe initial release.


import 'dart:async';
import 'dart:math';

import 'package:flutter/material.dart';
import 'package:speedometer/speedometer.dart';
import 'package:rxdart/rxdart.dart';

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

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'Flutter Demo',
      theme: new ThemeData(
        // This is the theme of your application.
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or press Run > Flutter Hot Reload in IntelliJ). Notice that the
        // counter didn't reset back to zero; the application is not restarted.
        primarySwatch: Colors.blue,
      home: new MyHomePage(title: 'SpeedOMeter Example'),

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

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  _MyHomePageState createState() => new _MyHomePageState();

class _MyHomePageState extends State<MyHomePage> {
  double _lowerValue = 20.0;
  double _upperValue = 40.0;
  int start = 0;
  int end = 60;
  int counter = 0;
  PublishSubject<double> eventObservable = new PublishSubject();
  void initState() {
    const oneSec = const Duration(seconds:1);
    var rng = new Random();
    new Timer.periodic(oneSec, (Timer t) => eventObservable.add(rng.nextInt(59)+rng.nextDouble()));
  Widget build(BuildContext context) {
      final ThemeData somTheme = new ThemeData(
          primaryColor: Colors.blue,
          accentColor: Colors.black,
          backgroundColor: Colors.grey
      return  new Scaffold(
          appBar: new AppBar(
              title: new Text("SpeedOMeter"),
             // bottom: new Text("SpeedOMeter"),
          body: new Column(
              children: <Widget>[
                  new Padding(
                      padding: new EdgeInsets.all(40.0),
                      child: new SpeedOMeter(start:start, end:end, highlightStart:(_lowerValue/end), highlightEnd:(_upperValue/end), themeData:somTheme, eventObservable: this.eventObservable),

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  speedometer: ^1.0.5

2. Install it

You can install packages from the command line:

with Flutter:

$ flutter packages get

Alternatively, your editor might support flutter packages get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:speedometer/speedometer.dart';
Version Uploaded Documentation Archive
1.0.5 Oct 14, 2018 Go to the documentation of speedometer 1.0.5 Download speedometer 1.0.5 archive
1.0.3 Oct 6, 2018 Go to the documentation of speedometer 1.0.3 Download speedometer 1.0.3 archive
1.0.1 Oct 6, 2018 Go to the documentation of speedometer 1.0.1 Download speedometer 1.0.1 archive
Describes how popular the package is relative to other packages. [more]
Code health derived from static analysis. [more]
Reflects how tidy and up-to-date the package is. [more]
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Learn more about scoring.

We analyzed this package on Oct 14, 2018, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.0.0
  • pana: 0.12.4
  • Flutter: 0.9.5


Detected platforms: Flutter

References Flutter, and has no conflicting libraries.

Health suggestions

Fix lib/speedometer.dart. (-0.50 points)

Analysis of lib/speedometer.dart reported 1 hint:

line 12 col 7: This class inherits from a class marked as @immutable, and therefore should be immutable (all instance fields must be final).

Format lib/handpainter.dart.

Run flutter format to format lib/handpainter.dart.

Format lib/linepainter.dart.

Run flutter format to format lib/linepainter.dart.

Format lib/speedtextpainter.dart.

Run flutter format to format lib/speedtextpainter.dart.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.0.0-dev.68.0 <3.0.0
flutter 0.0.0
rxdart ^0.18.1 0.18.1 0.19.0
Transitive dependencies
collection 1.14.11
meta 1.1.6
sky_engine 0.0.99
typed_data 1.1.6
vector_math 2.0.8
Dev dependencies