While debugging your Xamarin Android app in Visual Studio you can capture a video of the device screen and upload it to your PC. To do this open the ADB command prompt from the Xamarin Android toolbar:- At the command prompt navigate to a folder where you want the video to end up. Type the […]
When we talk about app settings we could mean a few different things. The actual settings values which are stored by your app, an in-app method to view/edit those settings or the iOS Settings UI which exposes both system and application settings to the user in the centralised place. In this article we’ll look at […]
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Touchscreen Visualisation on Xamarin iOS
Seems to Have an Invisible Touch To produce a demonstration video on Android you can turn on screen visualisations from the Developer settings menu and this will shows screen interactions on a screen capture. No such option exists on iOS so you need to write some custom code in your app instead. A couple of […]
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Calendar Import is Back
I was almost at the point of retiring the app since Mail & Calendar has supported iCalendar (.ics) files for a while now. Then I came across a scenario where the app is still required. vCalendar files (.vcs) are very similar but use version 1.0 of the vCalendar spec whereas iCalendar is version 2.0. Mail […]
From a Win32 .NET library (One that targets desktop apps whether Console, WinForms or WPF) you can add two references and take advantage of (most) UWP APIs. The first is a .NET library which handles interop with the UWP / WinRT APIs:- C:Program Files (x86)Reference AssembliesMicrosoftFramework.NETCorev4.5System.Runtime.WindowsRuntime.dll The second is the metadata for the UWP APIs […]
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Xamarin Forms MediaElement
Some time ago I created a MediaElement control for Xamarin Forms for displaying video (and audio) content across the main mobile platforms and it’s been steadily improving and has been used in a number of projects. After some discussions on GitHub I started the process of integrating the control into Xamarin Forms itself with a […]
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Azure IoT DevKit – External Connectivity
Beyond the sensors built into the board the possibilities are endless when you consider attaching external devices. As I mentioned in my previous post, the DevKit has an edge connector with a number of input/output pins as well as power. You’ll need an “edge connector breakout” like this to make use of them. I found […]
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First Steps with Azure IoT DevKit
The Azure IoT DevKit is an Arduino compatible board which is ready to use in conjunction with Azure IoT Hub to build an end-to-end IoT system. Code running on the board is native C and you deploy to the board using Visual Studio Code over the included USB cable. Then your device uses WiFi to […]
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Bluetooth with Xamarin Mac
I’ve been working on adding macOS support to 32feet.NET and there are two frameworks in macOS for Classic Bluetooth – IOBluetooth and IOBluetoothUI. I soon discovered that neither of these had bindings in the standard Xamarin.Mac package which is referenced by all Xamarin Mac applications. I decided to build binding libraries for both APIs and […]
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Bluetooth from Unity
An ongoing issue with 32feet.NET is that it wouldn’t work inside Unity. The reason is that the System.Net.Sockets classes behave slightly differently in the Mono runtime to the desktop .NET framework and you can’t create a Socket using the Bluetooth specific address family. In order to work around the issue it was necessary to P/Invoke […]
In The Hand Ltd 