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Posts tagged: iOS

Xamarin Client (simple PoC)

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What is Xamarin?

Read all details here.

It's a company and a really cool platform for mobile application development. It enables you to use one codebase for iOS and Android.

Since 2016, it's more or less free for everyone.

We tried Xamarin some years before 2016 and it wasn't free. So it wasn't an option for us. Not because it's using C# as programming language. We already have mobile clients for JVx applications but they don't share the same codebase. There is one client for Android and another one for iOS. The source code is licensed under Apache 2.0.

Our native clients work great but we think they could be better.

In the last days we made some tests with different tools, to create a new universal client with one technology. A HTML5 client wasn't an option for us because of different criterias. A real native client was important during our evaluation.

Some links to different opinions:

We made good first progress with Xamarin and because of its pricing, it was the winner of our evaluation. Sure, Xamarin is C# but it's better to write C# than JavaScript. Another plus was that we already have a simple JVx connection port to .NET based on C#. So we could reuse this code.

Why not JavaFX?

The problem with JavaFX is, that it's unclear what will happen with JavaFX in the future. There are different articles about the future of JavaFX, but the one from Jonathan Giles makes it clear

Sure, there's Gluon and some other individual developers, but the overall performance isn't relly comparable to native apps. It's awesome what happened in the last years, but the progress is missing.

We still have our JavaFX based UI, but we're not sure if JavaFX will survive or it will be commercialized. So it's better to have an option.

Why not CodenameOne?

It's a really cool technology and works great with some smaller performance glitches (simply try the current KitchenSink from the App stores)..
WORA just works!

The cloud build isn't what we prefer and the pricing is not good for our use-case. Our client should be free, open and easy to use for every developer.

Here is a simple test application for REST access to our Heroes application, used in our Angular test application.

iOS client

iOS client

Android client

Android client

The source code for this test:

using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Text;
using Newtonsoft.Json;
using Xamarin.Forms;

namespace TableViewSamples
{
  public class RESTTable : ContentPage
  {
    public RESTTable()
    {
      GetData();
    }

    async void GetData()
    {
      this.Title = "REST Data";
      var table = new TableView() { Intent = TableIntent.Data };
      var root = new TableRoot();
      var section1 = new TableSection() { Title = "First Section" };

      var authData = string.Format("{0}:{1}", "user", "pwd");
      var authHeaderValue = Convert.ToBase64String(Encoding.UTF8.GetBytes(authData));

      HttpClient client = new HttpClient();
      client.DefaultRequestHeaders.Authorization =
        new System.Net.Http.Headers.AuthenticationHeaderValue("Basic", authHeaderValue);
      HttpResponseMessage response = await client.GetAsync("https://...");

      if (response.IsSuccessStatusCode)
      {
          HttpContent content = response.Content;

          var result = await content.ReadAsStringAsync();

          var parsed = JsonConvert.DeserializeObject<List<HEROES>>(result);

          foreach (var record in parsed)
          {
              System.Diagnostics.Debug.WriteLine("Data: {0}", record);

              section1.Add(new TextCell { Text = record.NAME });
          }
      }

      table.Root = root;
      root.Add(section1);

      Content = table;
    }
  }

  public class HEROES
  {
    public int ID { get; set; }
    public string NAME { get; set; }
  }
}

Demo ERP 1.1, iOS & Android App updates

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First, we've released version 1.1 of our Demo ERP application. The full source code is available on SourceForge. It doesn't have more features than 1.0 because it's a simple lib upgrade release with improvements for developers.

The DemoERP.zip now contains the whole project structure and not only the source files. Simply unzip the archive, import the project in your Eclipse IDE and start the DemoERP.launch file (sure, DB must be configured manually). The archive contains small README files with additional information.

We fixed code signing problems and you shouldn't have any problems with DemoERP.war. So, simply deploy the war and open http://localhost/DemoERP/web/ui in your browser (see README).

The release contains our latest vaadinUI based on 7.4.5 and our latest JVx.mobile lib. The mobile lib was needed for our updated mobile apps for iOS and Android.

Yepp, we've new apps in the stores (still native but not based on JavaFX). The apps have a buch of new features like custom view styles (based on style property of JVx), image viewer/editor or the new Form view. But the biggest improvement was offline support. It's now possible to switch to offline mode and back to online mode. Sure, we sync your offline data!

It's an awesome feature because it's a generic solution and you don't have to change anything in your application. It simply works!

Both applications have the same features but system specific.
Here's the iOS link.
The Android app via Google Play.

Both apps work great with latest VisionX releases and simply use it to test your VisionX application - LIVE - without redeployments - on your mobile devices!

Master Thesis - JVx Mobile und iOS

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Die Master Thesis von Stefan Fessler steht nun öffentlich zur Verfügung. Das Thema war

Design und Implementierung einer Multi-Touch optimierten iOS App für das JVx ERP Applikation Framework

Im Zuge seiner Arbeit wurde der iOS Client für JVx entwickelt. Das Projekt steht unter der Apache Lizenz 2.0 zur Verfügung.

Die Arbeit ist zugleich eine gute Dokumentation und erklärt Designentscheidungen sowie deren Umsetzung.

JVx Client available in the AppStore

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jvxclient_preview Our application is available in the AppStore for your iOS devices.

It's an open source application. The whole source code is available on SorceForge. The application itself is a client application for JVx applications. Its your custom ERP in the pocket.

Simply manage your customer records, wherever you are. Use one client for all your JVx applications. If you are VisionX user, it's very easy to customize your applications for your mobile device because VisionX has built-in support for it.

The Preview app has one limitation: It only shows one screen.
We'll release a version without this limitation a little bit later.

The Preview client should be the first choice for VisionX users because it's free. If you need full functionality, we'll offer a client without limitations and customized to your needs.

JVx - Android - iOS (iPhone/iPad/iPod)

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JVx is written in Java and you can create Desktop Applications (Swing or QTJambi), Rich Internet Applications (Applet or Webstart or Ajax/HTML) and Mobile Android Applications. You develop an Application once and start it with different technologies - Single Sourcing!

But what about the iPhone?

Native iPhone apps are written in Obective-C, C or other supported programming languages. Java is not supported - at the moment.
We are currently developing iOS AddOns that makes it possible to create native iOS apps which uses JVx business logic. The AddOns includes object serialization, connection handling and simple model implementations.

Develop your JVx Business Application, use the same source code for your Desktop and/or Web Application and use the same business logic for your Mobile Device(s).

One framework for different plattforms and different technologies.

And everything is Open Source!