Mohammed Ezzat Awad

Intro For a growing UI page there always comes a need to create sub views that can be used inside a bigger view, and for that we need custom controls, which are controls that are derived either from a layout or a simple view which is the basic control for almost any UI component in Xamarin forms, and therefore for a start i will use that as an example. And in such example we will create a custom control with a set of bindable properties and explain how they work, also how to add an event that can also be bound to Commands Lets Create the control  I have just went ahead and created a custom control that inherits from Xamarin.Forms.View and have some properties such color and checked all properties to be bound to by the ViewModel serving as the datacontext of the this control. here is the code below using System; using Xamarin.Forms; namespace UserControls { public class CustomView : View { public Color Color { get ; set ;

Testing to a next level  To improve applications testing a great focus on the business and requirement needs was approached, and thus it came to be to write the tests first and thus forcing the developer to write the code the will run this test successful, though this may have added a great value to testing, still the idea of developers deviating from the main business scope and going their way still make a huge margin, so in order to improve TDD a new approach came to be, BDD is an approach that allows the interchangeability between business language and developers language, so it allows business owners to write readable test cases that can be read by any business owner or non technical, using natural language, and in even different languages not necessarily English, that developers can map to actual coded tests they develop, and thus giving more emphasis on the whole business needs values, BDD in Xamarin  As illustrated before we will be using specflow to run the tests and

Following up to the previous blog i would like to get my hands a bit more dirty with the code and actually start using calabash to do some UI tests, knowing that the whole idea of testing can be maximized as we go through, from a sample UI test using the normal calabash syntax to the a more complex behavioral driven development approach where we can employ the power of   Cucumber  and  Gherkin  using SpecFlow  Syntax to create readable test cases that can be ready by non technical guys, of course every step we take towards a more technical advancement the more work we are required to do, anyhow lets start simple First thing is the tools we gonna need and i will mention them all even if we are going to start simple but i like to get everything ready first. The Tools The IDE Depending on your preference you can choose to use Xamarin studio or Visual studio to write your tests The Test Runner: You should be able to run the test using Microsoft test runner or the Xamarin studio

Intro As the title may describe this is the first of the series of articles that will cover the UI Test of Xamarin in a deep dive, we will start simple and then dig deeper as we go. Since this is very well the first of the series, it will mostly cover up the architecture and the testing technique that Xamarin UI Tests uses. The Technology Xamarin UI Test is an automation testing framework similar to selenium, Watir, Watin (.net), Robot and Sikuli, if you have used BDD (Behavioral Driven Development) or a more advanced TDD (Test Driven Development) approach at least you must have come across one of these frameworks, and in that perspective comes Xamarin UI Testing as an automation framework designed specifically for Xamarin Automation testing, For starter Xamarin UI Tests was not build from scratch, instead it was built on top of another UI Automation testing framework that is targeting android and iOS sepecifically which is Calabash, I have to say that this choice w

Using windows phone web client is pretty common but the thing is you can not use it using Async -> Await mechanism so i used threading to create an async functionality for The Download string and upload string methods here is the code below // Comment public class AsyncWebClient { public Task DownloadString(Uri uri) { var task = new TaskCompletionSource (); try { var client = new WebClient(); client.DownloadStringCompleted += (s, e) => { task.SetResult(e.Result); }; client.DownloadStringAsync(uri); } catch (Exception ex) { task.SetException(ex); } return task.Task; } public Task UploadString(Uri uri, string content) { var task = new TaskCompletionSource (); try { v

This is a short post in which i will explain how on Windows phone 8 to bind the application bar button or menu item, first this is only a fix for the  BindableApplicationbar  which supports windows phone 7 only, i just made it support windows 8 no features added or anything. i have uploaded the dll file here so it can be accessible easily here is the link to download http://sdrv.ms/RApUal now that you got the link lets check how we gonna use it you can refer to BinableApplicationbar  or check out the code here that i actually used in my app and i already read it there !  Add a reference to the BindableApplicationBar library here is the link again  http://sdrv.ms/RApUal Add XML namespace declaration in your page's XAML: xmlns : bar ="clr-namespace:BindableApplicationBar;assembly=BindableApplicationBar" Set Bindable.ApplicationBar property on your page code as in the snippet below: < phone : PhoneApplicationPage >     …     < bar : Bindable.App