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One can divide apps into the following two categories: Apps with functions that can be essentially achieved by a website, such as apps for banks, restaurants, parks, museums, booking, etc. These apps can be developed with any of the existing cross-platform frameworks such as Uno,…

Microsoft released this Windows 11 SDK (10.0.26100) with many bugs and backward compatibility issues. Most importantly, it lack the support for ARM devices, which are growing. If you install Windows 11 SDK (10.0.26100) and target your UWP app to Windows 11 24H2. everything will be…

The Shanghai index first broke above 2,000 in July 2000 and almost tripled to 6,092.06 on Oct. 16, 2007. Now it is back to about 2,000. China has certainly made history by 600% GDP increase and zero stock market gain in 12 years. Even in…

This book is excellent in every sense – scope, depth, readability… It is an excellent survey for anyone who does not closely track the development of all the web app related technologies. It is broad and accurate enough for someone to make a decision regarding…

With Cordova in Visual Studio, one can develop an app targeting Windows 10 (unitfied Windows OS for PCs and mobile devices), Android and iOS. The most important thing for one to keep in mind when developing such type of apps is they are hosted apps.

1. Some hosting service provider does not provide DNS name server to point to your VPS, so a custom DNS needs to be set up . Add a Forward Lookup Zone for the domain (e.g. foo.com). Go to the domain’s registrar’s website to configure it to…

Unlike a desktop application, a smartphone app with its limited real estate does not have the luxury of menus, ribbons, tabs to choose different switch to different windows or pages. One may think switching to a new page is as simple as opening a new…

Top countries for spending on mobile apps: China. The US. Japan. Korea The UK.

Mobile devices should be shown under This PC of Windows 10 when connected. If the beep can be heard, but the device is not shown under This PC, one can see a problem in Device Manager. There is a solution to this problem. 

IDC Forecasts U.S. Mobile Worker Population to grow from 96.2 million (61%) in 2015 to 105.4 million (72.3%) by 2020! hubEngage is primarily for internal use by relatively large organizations. Breather primarily the need for office on deman in metropolises where rent is high. It…

This is the type of question that is bound to have no meaningful simple answer. It is like the question "What is the cost of building a home?". One can build a habitable shelter home for less than $1000, and can spend over $100 million…

Nowadays, there are many (too many, IMHO) advertising networks (Google's AdMob, Apple's iAd, Microsoft's pubCenter, etc.) for mobile developers to monetize their apps. There are a few parameters considered when choosing an advertising network. The most important one is eCPM (effective Cost Per thousand iMpressions).

It takes about 10 minutes to activate a new mobile phone with a ported number thanks to all competitions and FCC's regulation for telephone number porting. One can use a new phone with a ported number within an hour. If the ported number was associated…

Mobile applications were probably not considered most when SOAP was originated in 90s by Microsoft staff. It is usually impractical, or at least, not optimal for mobile applications to host SOAP services, but it is perfectly practical for mobile applications to consume SOAP web services…

SkiaSharp is a versatile package that can be used on all mobile platforms. The following code encodes a pixel array to an JPEG image and displays it. SKImageInfo sii = new SKImageInfo(iWidth, 1, SKColorType.Rgba8888); SKData sd = SKData.Create(new MemoryStream(abPixels)); SKImage sKImage = SKImage.FromPixelData(sii, sd, iWidth…

The bottom line: WinUI is not ready for prime time as of December 2023. At its current progress pace, it needs at least 1 or 2 more years to grow to be sufficiently reliable and clean. Though Uno is a much more mature and stabler…

For developing apps that support service reference (e.g. UWP apps), one can consume web services defined by WSDL files by adding a service reference in VS and using the generated proxy classes. The approach requires the platform supports namespace System.ServiceModel which inner working is quite convoluted,…

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Uno Platform is likely the best platform for developing apps targeting multiple platforms - Windows, web, Android and iOS. One should have realistic perspective of Uno before getting into it: To start enjoying Uno Platform: For each new app tarting multiple platforms: UWP Head: Android…

The Microsoft Windows.GraphicsCapture API's performance is so poor that it is largely unusable. It may work with very powerful video cards, but many other screen capture apps such as SnagIt work fine with regular PCs.