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If it’s smaller than 10 (just a value I picked, experiment a bit to find the value that suites you best) we consider it a tap or click event.

To prevent this we calculate the X and Y offset, the distance travelled between the down and the up event. The problem with using the up event to detect a ‘click’ is that the event will also trigger after a move, which we don’t want. Public override void OnCreate () return true

The class also needs to inherit from the Service base class to be able to implement the service lifecycle methods. In Xamarin it suffices to decorate the class with the Service attribute.

Normally in Android service classes need to be declared in the manifest before being useable as a service. Create a new class called FloatingWidgetService in that folder. The service will be responsible for creating the widget, and for responding to touch events like a tap and a drag.Īdd a folder called ‘Services’ to the project. This layout is basically an image view that shows the chathead.png that lives in the drawable-nodpi folder. Add an axml file to Resources/layout and name it layout_floating_widget.axml We’ll start by creating the layout for the widget. In this sample we’ll let the MainActivity start the service and then finish itself. A service is a component that can do work without having an active UI, meaning that it can inflate views from a background worker (for example: creating a floating widget when a push notification arrives). To be able to do this we need to add a Service to our app. What is a floating widget?Ī floating widget on Android is basically nothing more than a loaded View that’s drawn on top of everything else. This drawable folder contains images that are valid for every screensize but can still be overwritten by more specific versions in the other drawable folders. I made a circle with my profile picture to mimic the Messenger chatheads.

Next, we’ll need an image to show in the widget. We start of with an empty Xamarin Droid project. I’ll walk you through it in this article. After some experimenting I managed to get it working in Xamarin Android. I really liked the idea of the chatheads with the conversation folding out without having to launch the app first. I first noticed the floating widgets when I saw Facebook Messenger on a Samsung.