Category Archives: software development

Universal Apps: a look at Microsoft’s first efforts on Phone and PC

February 18, 2015 onlyconnect 1 Comment

Windows 10 for phones is now available on preview; I wrote a first-look piece for The Register here. I like it better than I had expected; it is a bit laggy but pretty much stable and with some compelling new features.

The main interest of the preview for me though is the appearance of first-party universal apps. Since these form a key part of the strategy for Windows 10, it seems to me that they merit close attention; after all, this is what Microsoft is hoping other developers will do when creating apps for Windows. Universal apps are not actually new in Windows 10 – you can write one today for Windows 8 and Windows Phone – but in the forthcoming Windows they run on the desktop rather than just in the tablet environment. There are also changes in the Windows Runtime API and frameworks though these are currently undocumented as far as I am aware (wait for Build!)

How many Microsoft universal apps are there in Windows 10, designed for both tablet and phone? Quite a few. The ones I am looking at here are Settings (not sure if this is actually the same app), Calculator, Photos, Sound Recorder, Alarms and Feedback.

There is more coming, most notably Outlook (including Mail and Calendar), Word, Excel and PowerPoint. The latter three are already available in preview in Windows 10 for PCs and tablets, but not yet for phone. However, the Android and iOS phone versions are probably a good indication of what is to come, at least for Word, Excel and PowerPoint. For Outlook there is some confusion caused by Microsoft acquiring third-party apps and rebadging them, so in these cases Windows 10 may diverge more from iOS and Android.

Enough apps then to be significant. In the screenshots that follow, I have shown in most cases three versions of each app: Windows Phone 8.1 (the equivalent app, not a universal app), Windows 10 PC, and Windows 10 phone. My general observations are:

1. The old Windows Phone version is more carefully optimized for a smartphone, with a chunky UI that is optimized for touch.

2. The new apps have more functionality, as you would expect for apps that need to work on the desktop where expectations are higher.

3. The new apps have a distinctive look and feel compared to either Windows Phone 8.1 apps, or Windows 8 “Metro” apps. Needless to say, they look different from Windows 7 style desktop apps as well. These are still Windows Runtime (the platform underlying “Metro” or “Store” apps) but in general the UI is denser than before; there is more information on view in a single screen.

While I have some doubts about the usability of the new apps on a phone, this seems to me a good direction overall; the phone is benefiting from work Microsoft is doing for the PC and vice versa. I think we will see better, more useful apps on both platforms as a result.

Now for the screenshots:

Calculator

Windows Phone 8.1	Windows 10 Phone	Windows 10 PC

A good example of how the new app is more functional but less well optimized for touch.

Alarms

Windows Phone 8.1	Windows 10 Phone	Windows 10 PC

I have cheated a bit here because no world clock in the old Alarms app!

Sound Recorder

Windows 10 Phone	Windows 10 PC

No Phone 8.1 version. But you can see this really is the same app. I am glad to see this on the phone; it is an update of an ancient Windows accessory and actually useful.

Photos

Windows Phone 8.1	Windows 10 Phone	Windows 10 PC

Feedback

Windows 10 Phone	Windows 10 PC

While this is the same app, you can see that Microsoft has adapted the UI for the phone. In the Phone version, you hit the All Categories link to see the categories and select. In the PC version, they are listed in a left-hand column. The Universal App concept allows for a totally different UI on different devices if necessary.

Settings

Windows Phone 8.1	Windows 10 Phone	Windows 10 PC

The Settings app is radically changed in Windows 10; a good thing in that the Windows Phone 8.1 settings is a hopeless long and confusing list and needed some organisation. The Windows 10 PC version looks different but has the same sections and icons.

microsoft, software development, windows

Windows 10 and HoloLens: quick thoughts and questions following the January reveal

January 21, 2015 onlyconnect 3 Comments

Microsoft is revealing its Windows 10 plans in stages, presumably in part to build up expectation and get feedback, and in part because some pieces are ready to show before others.

Today in Redmond Microsoft shared a number of new features. In quick summary:

Windows 10 will be a free upgrade for all Windows 7 and 8.x users, at least for the first year.

Comment: this is necessary since the refusal of Microsoft’s user base to upgrade from Windows 7 is a strategic roadblock. For example, Windows 7 users cannot use Store apps, reducing the market for those apps. It is more important to persuade users to upgrade than to get upgrade revenue. Windows 10, of course, will have to be compelling as well as free for this initiative to work, as well as providing a smooth upgrade process (never a trivial task).

Windows to evolve to become a service Executive VP Terry Myerson says this in this post:

Once a Windows device is upgraded to Windows 10, we will continue to keep it current for the supported lifetime of the device – at no additional charge. With Windows 10, the experience will evolve and get even better over time. We’ll deliver new features when they’re ready, not waiting for the next major release. We think of Windows as a Service – in fact, one could reasonably think of Windows in the next couple of years as one of the largest Internet services on the planet.

And just like any Internet service, the idea of asking “What version are you on?” will cease to make sense – which is great news for our Windows developers.

Comment: What does this mean exactly, beyond what we already have via Windows Update? What does Myerson mean by “the supported lifetime of the device”? What are the implications for the typical three-year Windows release cycle? I hope to discover more detail soon, though when I enquired whether there will be, for example, a “Windows 11” I was told, “We aren’t commenting beyond what’s stated in post that you reference.”

Project Spartan (a code name) is a new browser developed as a universal app – this means an app built for the Windows Runtime (“Metro”) environment, though in Windows 10 these also run in a window on the desktop, blurring the sharp distinction you see in Windows 8. Project Spartan features, according to Microsoft’s Joe Belfiore, a new rendering engine along with features includes the ability to annotate web pages with keyboard or touch/stylus, and the ability to save pages for reading offline. There will also be “enterprise mode compatibility for existing web apps”, which means that old IE will live on.

Comment: Creating a new browser is a bold step though it may be as much for marketing reasons as anything else, since IE has a tarnished reputation. The advantages of the new rendering engine, and the way compatibility will be handled, are not yet clear. Another point of interest is compatibility issues caused not only by the new engine, but also by running in sandboxed universal app environment. Looking forward to more detail on this.

Windows 10 across PC, tablet and mobile: the OS will have the same name on all three, universal apps (like a new mobile Office) will run on all three, and there are new efforts to synchronize content. For example, notifications will sync across phone and PC/Tablet.

Comment: Sounds good, but there are a few downsides. One is that Windows Phone is tied to the same release cycle as full Windows, which is rather slow. Currently Windows Phone is falling back as it waits for Windows 10 in respect of both operating system upgrade and also the universal app version of Office – which is already available for iOS and Android. CEO Satya Nadella said today that there will be new “flagship” Windows phone devices, which is good news for what is currently a neglected platform, but it will be hard for the platform to thrive if it is constantly waiting for the next big Windows update. Update: if “Windows as a service” means no more monolithic upgrades but constant incremental improvement, perhaps this will not be the case. Watch this space.

Cortana coming to Windows PC and tablet: we saw Microsoft’s digital assistant, powered by Bing search, demonstrated on full Windows.

Comment: Cortana is impressive and fun, but I am not sure how much the feature enhances the platform. On the phone I do not use it much; the problem is that speaking to your phone “what meetings to I have today” and getting a spoken response is a great demo, but in practice it is easier to glance at the calendar, especially as voice control only works in quiet scenarios. The other aspect of Cortana is the personalisation it brings to things like web search or reminders; more data about our preferences and activities can bring some magic. This is Google Now territory, and while Microsoft’s approach to privacy may be preferable, Google will be hard to match in respect of the amount of data it can draw upon.

DirectX 12: Microsoft showed a demo of its latest DirectX graphics API, claiming up to 50% better performance and up to 50% less power consumption.

Comment: this is solid good news. If games run best on Windows 10 a significant enthusiast community will want to upgrade right away. Further, DirectX is not just for games.

Xbox One integration: Microsoft showed how Xbox Live team or competitive games can work across Xbox One and PC, and how games can be streamed from XboxOne so that the console becomes a kind of games server for your Windows 10 tablets and PCs. Xbox One will also run universal apps.

Comment: Better integration between Windows devices and Xbox is long overdue and can help to promote both. Xbox One though has a bit of a Windows 7 problem of its own, with Xbox 360 remaining popular simply because of the huge numbers of games that have not been ported. If only Microsoft could introduce backwards compatibility …

Surface Hub: this is a giant 84”, 4K display wall-hanging PC which you can use as an interactive whiteboard for meetings and so on. It seems to be the next innovation from the Perceptive Pixel folk who also developed the table-top Surface device.

Comment: Looks cool, but it will be expensive. May help to encourage businesses to keep faith with the Windows client.

Microsoft HoloLens: this was the big reveal, a secret project that, we were told, has been developed in the basement of the Microsoft Visitor Center on its Redmond campus.

HoloLens is a headset which enables 3D augmented reality: projected images are seen like holographic images in the space around you, and you can interact by gesture detected by cameras and motion sensors in the headset. Look carefully at the following image:

In this example, the demonstrator is assembling a quad copter using a palette of 3D components in Holo Studio, an application which uses the technology. However, note that you only see the quad copter through the HoloLens headset, the image from which in this case is merged with a view of the demonstrator herself using a custom camera:

If you had been in the room, you would see the quad copter only on the screen, not in the room itself. Therefore I suspect this is more accurately described as augmented reality than holography, though the scene does look holographic if you are wearing the headset.

In a final flourish, Microsoft a 3D printed version of the quad copter which duly flew up and down; I am sure the motor and so on was NOT 3D printed, but it made a lovely demo.

Apparently NASA loves the technology and will be using it with Mars Rover in July in a project called OnSight – read the NASA release.

Bringing it down to earth, Microsoft also stated that all universal apps will have access to the HoloLens APIs.

Comment: This looks amazing and must have potential for all sorts of scenarios: architects, planners, marketing, games and more. The tough question I suppose is how much it has to do with Windows 10 as experienced by most users.

In closing

Microsoft surprised us today and deserves kudos for that. Nobody can accuse the company of lack of innovation; then again, Windows 8 and the original Surface were innovative too, and proved to be a disaster. I do not think Windows 10 will be a disaster; we have already seen in the preview how it is an easier transition for Windows 7 users.

A key thing to note from a developer and technical perspective is that universal apps are right at the centre of the Windows 10 story. That is a good thing in many respects, since we get Store deployment, sandbox security, and a degree of compatibility across phone, PC, tablet and Xbox One. But is the Store app / Universal app platform mature enough to deliver a good experience for both developers and users, bearing in mind that in Windows 8.x it is really not good enough?

Look to Microsoft Build at the end of April, which Myerson said is the culmination of the Windows 10 reveal, to answer that question.

.net, android, development, ios, microsoft, mobile, mono, professional, software development, visual studio, web authoring

Microsoft takes its .NET runtime open source and cross-platform, announces new C++ compilers for iOS and Android: unpacking today’s news

November 12, 2014 onlyconnect 2 Comments

Microsoft announced today that the .NET runtime will be open source and cross-platform for Linux and Mac. There are a several announcements and it is potentially confusing, so here is a quick summary.

The .NET runtime, also known as the CLR (Common Language Runtime) is the virtual machine that runs Microsoft’s C#, F# and Visual Basic .NET languages, performing just –in-time compilation to native code and providing interop between the application code and the operating system APIs. It is distinct from the .NET Framework, which is the library of mostly C# code that underlies application platforms like ASP.NET, Windows Presentation Foundation (WPF), Windows Forms, Windows Communication Foundation and more.

There is is already a cross-platform version of .NET, an open source project called Mono founded by Miguel de Icaza in 2001, not long after the first preview release of C# in 2000. Mono runs on Linux, Mac and Windows. In addition, de Icaza is co-founder of Xamarin, which uses Mono together with its own technology to compile C# for iOS, Android and Mac OS X.

Further, some of .NET is already open source. At Microsoft’s Build conference earlier this year, Anders Hejlsberg made the Roslyn project, the compiler for the next generation of the .NET Runtime, open source under the Apache 2.0 license. I spoke to Hejlsberg about the announcement and wrote it up on the Register here. Note the key point:

Since Roslyn is the compiler for the forthcoming C# 6.0, does that mean C# itself is now an open source language? “Yes, absolutely,” says Hejlsberg.

What then is today’s news? Blow by blow, here are what seems to me the main pieces:

The CLR itself will be open source. This is the C++ code from which the CLR is compiled.
Microsoft will provide a full open source server stack for Mac and Linux including the CLR. This will not include the frameworks for client applications; no Windows Forms or WPF. Rather, it is the “.NET Core Runtime” and “.NET Core Framework”. However Microsoft is working with the Mono team which does support client applications so there could be some interesting permutations (bear in mind that Mono also has its own runtime). However Microsoft is focused on the server stack.
Microsoft will release C++ frameworks and compilers for iOS and Android, using the open source Clang (C and C++ compiler front-end) and LVVM (code generation back end), but with Visual Studio as the IDE. If you are targeting iOS you will need a Mac with a build agent, or you can use a cloud build service (see below). The Android compiler is available now in preview, the iOS compiler is coming soon. “You can edit and debug a single set of C++ source code, and build it for iOS, Android and Windows,” says Microsoft’s Soma Somasegar, corporate VP of the developer division.
Microsoft has a new Android emulator for Windows based on Hyper-V. This will assist with Android development using Cordova (the HTML and JavaScript approach also used by PhoneGap) as well as the new C++ option.
The next Visual Studio will be called Visual Studio 2015 and is now available in preview; download it here.
There will be a thing called Connected Services to make it easier to code against Office 365, Salesforce and Azure
A new edition of Visual Studio 2013, called the Community Edition, is now available for free, download it here. The big difference between this and the current Express editions is first that the Community Edition supports multiple target types, whereas you needed a different Express edition for Web applications, Windows Store and Phone apps, and Windows desktop apps. Second, the Community Edition is extensible so that third parties can create plug-ins; today Xamarin was among the first to announce support. There may be some license restrictions; I am clarifying and will update later.
New Cloud Deployment Projects for Azure enable the cloud infrastructure associated with a project to be captured as code.
Release Management is being added to Visual Studio Online, Microsoft’s cloud-hosted Team Foundation Server.
Enhancements to the Visual Studio Online build service will support builds for iOS and OS X
Visual Studio 2013 Update 4 is complete. This is not a big update but adds fixes for TFS and Visual C++ as well as some new features in TFS and in GPU performance diagnostics.

The process by which these new .NET projects will interact with the open source community will be handled by the .NET Foundation.

What is Microsoft up to?

Today’s announcements are extensive, but with two overall themes.

The first is about open sourcing .NET, a process that was already under way, and the second is about cross-platform.

It is the cross-platform announcements that are more notable, though they go hand in hand with the open source process, partly because of Microsoft’s increasingly close relationship with Mono and Xamarin. Note that Microsoft is doing its own C++ compilers for iOS and Android, but leaving the mobile C# and .NET space open for Xamarin.

By adding native code iOS and Android mobile into Visual Studio, Microsoft is signalling real commitment to these platforms. You could interpret this as an admission that Windows Phone and Windows tablets will never reach parity with their rivals, but it is more a consequence of the company’s focus on cloud, and in particular Office 365 and Azure. The company is prioritising the promotion of its cloud services by providing strong tooling for all major client platforms.

The provision of new Microsoft server-side .NET runtimes for Mac and Linux is a surprise to me. The Mac is not much used as a server but very widely used for development. Linux is an increasingly important operating system within the Azure cloud platform.

A side effect of all this is that the .NET Framework may finally fulfil its cross-platform promise, something Microsoft suppressed for years by only supporting it on Windows. That is good news for those who like programming in C#.

The .NET Framework is changing substantially in its next version. This is partly because of the Roslyn compiler, which is itself written in C# and opens up new possibilities for rich refactoring and code transformation; and partly because of .NET Core and major changes in the forthcoming version of ASP.NET.

Is Microsoft concerned that by supporting Linux it might reduce the usage of Windows Server? “In Azure, Windows and Linux are a core part of our platform,” Somesegar told me. “Helping developers by providing a good set of tools and letting them decide what server they run on, we feel is all goodness. If you want a complete open source platform, we have the tools for them.”

How big are these announcements? “I would say huge,” Somasegar told me, “What is shows is that we are not being constrained by any one platform. We are doing more open source, more cross-platform, delivering Visual Studio free to a broader set of people. It’s all about having a great developer offering irrespective of what platform they are targeting or what kind of app they are building.”

That’s Microsoft’s perspective then. In the end, whether you interpret these moves as a sign of strength or weakness for Microsoft, developers will gain from these enhancements to Visual Studio and the .NET platform.

development, software development

Writing for The Register

November 3, 2014 onlyconnect 4 Comments

Since the beginning of October I have been working two days a week for The Register. I am still freelance for the other three days so also available for other work.

Why the Register? I have been contributing for some years and there are several things I like about the publication. It is known of course for its attention-grabbing headlines but you will also find solid technical content there; it was one of the first sites to report the Linux Shellshock bug, for example, and did so in detail with strong follow-up posts, making the site a good one for admins to follow. There is also a strong developer readership which is good from my perspective. Editorially it is diverse and you will find plenty of different opinions expressed by the staff and contributors, which I consider a strength. Organisationally, The Register is refreshingly unbureaucratic.

It reminds me in some ways of the best days of Personal Computer World, a famous print magazine which ceased publication in 2009. PCW was a delight because it was not shy about covering small niches as well as mainstream technology, in the days when it had plenty of editorial pages to fill.

The comments are worth reading too; not all of them, but there are plenty of smart readers. On any specific topic, logic suggests that some of the readers will know more about it than the journalist; you should always glance at the comments.

The Register is also a well-read site; number 513 in the UK according to Alexa, and 2204 in the USA. Judging by Alexa it is seems to be the most popular tech news site in the UK though I am not an expert on web stats.

I will continue to post here of course, as well as covering hardware, gadgets and audio on http://gadgets.itwriting.com/.

In case you missed it, this is what I came up with in October – it was a bit more than 2 days a week as it turned out, I am not superhuman:

Programming Office 365- Hands On with Microsoft’s new APIs

Microsoft unwraps new auto data-protection in Office 365 tools

Mozilla- Spidermonkey ATE Apple’s JavaScriptCore, THRASHED Google V8

Microsoft shows off spanking Win 10 PCs, compute-tastic Azure

Happy 2nd birthday, Windows 8 and Surface- Anatomy of a disaster

Entity Framework goes ‘code first’ as Microsoft pulls visual design tool

Lollipop unwrapped- Chromium WebView will update via Google Play

Microsoft and Dell’s cloud in a box- Instant Azure for the data centre

Migrate to the cloud and watch your business take flight

Docker’s app containers are coming to Windows Server, says Microsoft

Sway- Microsoft’s new Office app doesn’t have an Undo function

Influential scribe Charles Petzold- How I figured out the Windows API

Software gurus- Only developers can defeat mass surveillance

Xamarin, IBM lob cross-platform mobile app dev tools at Microsoft coders

Windows 10 feedback- ‘Microsoft, please do a deal with Google to use its browser’

No tiles, no NAP – next Windows for data centre looks promising

Vanished blog posts- Enterprise gaps- Welcome to Windows 10

One Windows- How does that work… and WTF is a Universal App-

Windows 10- One for the suits, right Microsoft- Or so one THOUGHT

c++, development, microsoft, professional, software, software development, visual studio, windows

Coding Office for cross platform: Microsoft explains its approach

October 12, 2014 onlyconnect 4 Comments

At last month’s @Scale conference in San Francisco, developers from a number of well-known companies (Google, Facebook, Twitter, Dropbox and others) spoke about the challenge of scaling applications and services to millions or even billions of users.

Among the speakers was Igor Zaika, Distinguished Engineer in the Microsoft Office team, and the video (embedded below) is illuminating not only as an example of how to code across multiple platforms, but also as an insight into where the company is taking Office.

Zaika gives a brief résumé of the history of Office, mentioning how the team has experienced the highs and lows of cross-platform code. Word 6.0 (1993) was great on Windows but a disaster on the Mac. The team built an entire Win32 emulation layer for the Mac, enabling a high level of code reuse, but resulting in a poor user experience and lots of platform-specific bugs and performance issues in the Mac version.

Next came Word 98 for the Mac, which took the opposite approach, forking the code to create an optimized Mac-specific version. It was well received and great for user experience, but “it was only fun for the first couple of years,” says Zaika. As the Windows version evolved, merging code from the main trunk into the Mac version became increasingly difficult.

Today Microsoft is committed not only to Mac and Windows versions of Word, but to all the major platforms, by which Zaika means Apple (including iOS), Android, Windows (desktop and WinRT) and Web. “If we don’t, we are not going to have a sustainable business,” he says.

WinRT is short for the Windows Runtime, also known as Metro, or as the Store App platform. Zaika says that the relationship between WinRT and Win32 (desktop Windows) is similar to that between Apple’s OS X and iOS.

Time for a brief digression of my own: some observers have said that Microsoft should have made a dedicated version of Windows for touch/mobile rather than attempting to do both at once in Windows 8. The truth is that it did, but Microsoft chose to bundle both into one operating system in Windows 8. Windows RT (the ARM version used in Surface RT) is a close parallel to the iPad, since only WinRT apps can be installed. What seems to be happening now is that Windows Phone and Windows RT will be merged, so that the equivalence of WinRT and iOS will be closer and more obvious.

Microsoft’s goal with Office is to achieve high content fidelity and consistency of functionality across all platforms, but to use native UX/UI frameworks so that each version integrates properly with the operating system on which it runs. The company also wants to achieve a faster shipping cycle; the traditional two-year cycle is not fast enough, says Zaika.

What then is Microsoft’s technical strategy for cross-platform Office now? The starting point, Zaika explains, is a shared core of C++ code. Office has always been written in C/C++, and “that has worked out well for us,” he says, since it is the only language that compiles to native code across all the platforms (web is an exception, and one that Zaika did not talk much about, except to note the importance of “shared service code,” cloud-based code that is used for features that do not need to work offline).

In order for the shared non-visual code to work correctly cross-platform, Microsoft has a number of platform abstraction layers (PALs). No #ifdefs (to handle platform differences) are allowed in the shared code itself. However, rather than a monolithic Win32 emulation as used in Word 6.0 for the Mac, Microsoft now has numerous mini-PALs. There is also a willingness to compromise, abandoning shared code if it is necessary for a good platform experience.

How do you ensure cross-platform fidelity in places where you cannot share code? The alternative is unit testing, says Zaika, and there is a strong reliance on this in Office development.

There is also an abstraction layer for document rendering. Office requires composition, animation and touch APIs on each platform. Microsoft uses DirectX on Win32, a thin layer over Apple’s CoreAnimation API on Mac and iOS, a thin layer over XAML on WinRT, and a thinnish layer over Java on Android.

The outcome of Microsoft’s architectural work is a high level of code sharing, despite the commitment to native frameworks for UX. Zaika showed a slide revealing code sharing of over 95% for PowerPoint on WinRT and Android.

What can Microsoft-watchers infer from this about the future of Office? While there are no revelations here, it does seem that work on Office for WinRT and for Android is well advanced.

Office for WinRT has implications for future Windows tablets. If a version of Office with at least the functionality of Office for iPad runs on WinRT, there is no longer any need to include the Windows desktop on future Windows tablets – by which I mean not laptop replacements like Surface 3.0, but smaller tablets. That will make such devices less perplexing for users than Surface RT, though with equivalent versions of Office on both Android and iOS tablets, the unique advantages of Windows tablets will be harder to identify.

Thanks to WalkingCat on Twitter for alerting me to this video.

.net, android, apple, microsoft, mobile, professional, software development, xamarin

Xamarin Evolve: developers enjoy the buzz around cross-platform coding with C#

October 10, 2014 onlyconnect

“It’s like a Microsoft developer event back when they were good,” one exhibitor here at Xamarin Evolve in Atlanta told me, and I do see what he means. There is plenty of buzz, since Xamarin is just three years old as a company and growing fast; there is the sense of an emerging technology, and that developers are actually enjoying their exploration of what they can do on today’s mobile devices.

Microsoft is an engineering-led company and was more so in its early days. The same is true of Xamarin. It also also still small enough that everyone is approachable, including co-founders Miguel de Icaza and Nat Friedman. The session on what’s new in Xamarin.Mac and Xamarin.iOS was presented by de Icaza, and it is obvious that he is still hands-on with the technology and knows it inside out. Developers warm to this because they feel that the company will be responsive to their needs.

Approachability is important, because this is a company that is delivering code at breakneck speed and bugs or known issues are not uncommon. A typical conversation with an attendee here goes like this:

“How do you find the tools?” “Oh, we like them, they are working well for us. Well, we did find some bugs, but we talked to Xamarin about them and they were fixed quickly.”

Xamarin’s tools let you write C# code and compile it for iOS, Android and Mac. If you are building for Windows Phone or Windows, you will probably use Microsoft’s tools and share non-visual C# code, though the recently introduced Xamarin Forms, a cross-platform XML language for defining a user interface, builds for Windows Phone as well as iOS and Android.

The relationship with Microsoft runs deep. The main appeal of the tools is to Microsoft platform developers who either want to use their existing C# (or now F#) skills to respond to the inevitable demand for iOS and Android clients, or to port existing C# code, or to make use of existing C# libraries to integrate with Windows applications on the server.

That said, Xamarin is beginning to appeal to developers from outside the Microsoft ecosystem and I was told that there is now demand for Xamarin to run introductory C# classes. Key to its appeal is that you get deep native integration on each platform. The word “native” is abused by cross-platform tool vendors, all of whom claim to have it. In Xamarin’s case what it means is that the user interface is rendered using native controls on each platform. There are also extensive language bindings so that, for example, you can call the iOS API seamlessly from C# code. Of course this code is not cross-platform, so developers need to work out how to structure their solutions to isolate the platform-specific code so that the app builds correctly for each target. The developers of Wordament, a casual game which started out as a Windows Phone app, gave a nice session on this here at Evolve.

Wordament has an interesting history. It started out using Silverlight for Windows Phone and Google App Engine on the server. Following outages with Google App Engine, the server parts were moved to Azure. Then for Windows 8 the team ported the app to HTML and JavaScript. Then they did a port to Objective C for iOS and Java for Android. Then they found that managing all these codebases made it near-impossible to add features. Wordament is a network game where you compete simultaneously with players on all platforms, so all versions need to keep tightly in step. So they ported to Xamarin and now it is C# on all platforms..

I digress. The attendees here are mostly from a Microsoft platform background, and they like the fact that Xamarin works with Visual Studio. This also means that there are plenty of Microsoft partner companies here, such as the component vendors DevExpress, Syncfusion, Infragistics and ComponentOne. It is curious: according to one of the component companies I spoke to, Microsoft platform developers get the value of this approach where others do not. They have had only limited success with products for native iOS or Android development, but now that Xamarin Forms has come along, interest is high.

Another Microsoft connection is Charles Petzold – yes, the guy who wrote Programming Windows – who is here presenting on Xamarin Forms and signing preview copies of his book on the subject. Petzold now works for Xamarin; I interviewed him here and hope to post this soon. Microsoft itself is here as well; it is the biggest sponsor and promoting Microsoft Azure along with Visual Studio.

Xamarin is not Microsoft though, and that is also important. IBM is also a big sponsor, and announced a partnership with Xamarin, offering libraries and IDE add-ins to integrate with its Worklight mobile-oriented middleware. Amazon is here, promoting both its app platform and its cloud services. Google is a sponsor though not all that visible here; Peter Friese from the company gave a session on using Google Play Services, and Jon Skeet also from Google presented a session, but it was pure C# and not Google-specific. Salesforce is a sponsor because it wants developers to hook into its cloud services no matter what tool they use; so too is Dropbox.

Most of the Xamarin folk use Macs, and either use Xamarin Studio (a customised version of the open source MonoDevelop IDE), or Visual Studio running in a virtual machine (given that the team mostly use Macs, this seems to me the preferred platform for Xamarin development, though Visual Studio is a more advanced IDE so you will probably end up dipping in and out of Windows/Mac however you approach it).

Xamarin announced several new products here at Evolve; I gave a quick summary in a Register post. To be specific:

A new fast Android emulator based on Virtual Box
Xamarin Sketches for trying out code with immediate analysis and execution
Xamarin Profiler
Xamarin Insights: analytics and troubleshooting for deployed apps

Of these, Sketches is the most interesting. You write snippets of code and the tool not only executes it but does magic like generating a graph from sequences of data. You can use it for UI code too, trying out different fonts, colours and shapes until you get something you like. It is great fun and would be good for teaching as well; maybe Xamarin could do a version for education at a modest price (or free)?

I am looking forward to trying out Sketches though I have heard grumbles about the preview being hard to get working so it may have to wait until next week.

development, software development, visual studio, windows

VLC is coming to Windows Phone

October 3, 2014 onlyconnect

The popular media playback app VLC is coming to Windows Phone as well as Windows tablets, according to an email sent to supporters of its Kickstarter project for VLC for WinRT (Windows Runtime).

A new preview release has been made available on the Windows Store, with the following changes:

using libVLC 2.2.0 core,
redesign of the interface,
huge performance improvements,
use of Winsock for networking instead of WinRTsock,
use of Windows 8.1 widgets,
move the interface code to Universal to prepare Windows Phone 8.1 port.

The app is currently x86 only, and this will have to change before a Windows Phone version is possible, since Windows Phone currently runs only on ARM chipsets. The VLC developers say:

While this release is still x86-only, we’ve made great advances on the ARM port. More news soon.

The progress of apps like VLC will be interesting to watch following the release of Windows 10 next year, which (from the user’s perspective) blurs the distinction between desktop apps (like the old version of VLC) and Store apps (like this new one). Can the Store app be good enough that users will not feel the need to have the desktop version installed? Even if it is, of course, the desktop version will remain the only choice for those on Windows 7 and earlier. In fact, make that Windows 8.0 and earlier, since the new version requires Windows 8.1.

.net, microsoft, software development

Is this why it is Windows 10 (not 9): avoiding Windows 95 detection?

October 2, 2014 onlyconnect

Why did Microsoft call the Windows release after 8 version 10 rather than 9?

Windows boss Terry Myerson said it was because it was such a huge release – but then he would say that.

A more prosaic reason could be the old software problem of false version detection. After all, we have had Windows 9x before – that is, Windows 95 and Windows 98.

Former Windows chief Steven Sinofsky tweeted this a few hours ago:

which if you follow the link gets this:

The first of these throws an exception if the name of the OS starts with “Windows 9”; and there are plenty of others like it.

Now, Windows version numbers are complex (Windows 95 actually reported itself as version 4.0) and well-written applications would get this right. There is also a year or so before Windows 10 is released, which gives time for developers, and the suppliers of runtimes like Java, to fix their code if necessary.

Still, it seems to me plausible that avoiding a version headache was a factor behind the naming of Windows 10.

android, ios, mobile, software development

Testing mobile apps: Xamarin goes live with Test Cloud for iOS and Android (but no Windows Phone)

September 26, 2014 onlyconnect

Testing a mobile app is challenging, thanks to operating system fragmentation combined with diversity of hardware. In April 2013 Xamarin acquired a company called LessPainful, specialists in functional testing for mobile apps, which had created a mobile app testing tool called Calabash. Calabash is based on Cucumber, and lets you define test steps and then combine them into natural language tests. LessPainful also had a cloud testing service which let you run tests on remote physical devices and see visual test reports.

Eighteen months on, Xamarin has now gone live with Test Cloud, and has announced some big names which it says are using the service, including Dropbox, Flipboard and eBay.

There are currently 1036 devices (the number changes regularly) in the Test Cloud, including 273 iOS and 763 Android (Windows Phone is not supported, but Amazon’s Fire Phone and Kindle Fire does appear in the list).

You write your tests either in Calabash or in C#, upload your app and the tests to Test Cloud, wait a while, and then get notification that the tests are done and a report ready to view.

You can simulate events such as changes in location, device rotation, network dropouts, and of course user interactions like taps and gestures. You get screenshots and performance data (memory and CPU usage) for each test step.

You can also integrate with CI (Continuous Integration) systems like TFS, Jenkins and TeamCity to automate testing.

Writing and maintaining tests is hard work, of course, but for businesses that can afford the investment in both time and money, Test Cloud is likely to be a great improvement on manually gathering up as many devices as you can find and installing your app on all of them.

The cost is significant though, starting at $1000 per month for up to 2 apps and 200 device hours. You have to pay annually too, so it looks like a strategy of just buying one month towards the end of your development cycle will not work.

That said, I have been told that Xamarin will be coming out with an Indie version in the future that has a lower price.

android, google, mobile, software development, Web

Android apps on Chrome: how it works and what it may become

September 25, 2014 onlyconnect

Google announced at its I/O conference in June 2014 that Android apps are coming to its Chrome OS. Earlier this month product managers Ken Mixter and Josh Woodward announced that the first four Android apps are available in the Chromebook app store: Duolingo, Evernote, Sight Words and Vine.

I delayed posting about this until I found the time to investigate a little into how it works. I fired up an Acer C720 and installed Evernote from the Chrome web store (in addition to Evernote Web which was already installed).

When you install your first Android app, Chrome installs the App Runtime for Chrome (Beta) (ARC) automatically.

Incidentally, I found Evernote slightly odd on Chromebook since it is runs in a window although the app is designed to run full screen, as it would on a phone or tablet. This caught me out when I went to settings, which looks like a dialog, and closed it with the x at the top right of the window. Of course that closes the app entirely. If you want to navigate the app, you have to click the back arrow at top left of the window instead.

But what is the App Runtime for Chrome? This seems to be an implementation of the Android runtime for NaCl (Native Client), which lets you run compiled C and C++ code in the browser. If you browse the parts of ARC which are open source, you can see how it implements the Android Open Source Project (AOSP) for arch-nacl: a virtual processor running as a browser extension.

Not all of ARC is open source. The docs say:

Getting Started with ARC Open Source on Linux

=============================================

A small set of shared objects can be built which are part of ARC currently.

A fully running system cannot currently be built.

It is early days, with just four apps available, ARC in beta, and developers asked to contact Google if they are interested in having their Android apps run on Chrome OS. However, an independent developer has already ported ARC to desktop Chrome:

ARChon runtime lets you run unlimited number of Android APKs created with chromeos-apk on Chrome OS and across any desktop platform that supports Chrome.

The desktop version is unstable, and apps that need Google Play services run into problems. Still, think of it as a proof of concept.

In particular, note that this is Android Runtime for Chrome, not Android Runtime for Chrome OS. Google is targeting the browser, not the operating system. This means that ARC can, if Google chooses, become an Android runtime for every operating system where Chrome runs – with the exception, I imagine, of Chrome for iOS, which is really a wrapper for Apple’s web browser engine and cannot support NaCl, and Chrome for Android which does not need it.

Imagine that Google gets ARC running well on Windows and Mac. What are the implications?

The answer is that Android will become a cross-platform runtime, alongside others such as Flash (the engine in Adobe AIR) and Java. There has to be some performance penalty for apps written in Java for Android running in an Android VM in the browser; but NaCl runs native code and I would expect performance to be good enough.

This would make Android an even more attractive target for developers, since apps will run on desktop computers as well as on Android itself.

Might this get to the point where developers drop dedicated Windows or Mac versions of their apps, arguing that users can just run the Android version? An ARC app will be compromised not only in performance, but also in the way it integrates with the OS, so you would not expect this to happen with major apps. However, it could happen with some apps, since it greatly simplifies development.

Tim Anderson's IT Writing