Enhance Your Xamarin.Forms App’s User Experience With Polly

When working on an app that relies on getting data from an API, it is crucial to make the waiting and loading experience as seamless as possible for the user – like Facebook, Amazon, LinkedIn apps do. Unresponsive app will most likely be uninstalled by the user and you can say goodbye to your customers, revenue, user base, whatever it is you made the app for.

One of the biggest issue API reliant apps face is unreliable network connectivity. As users move around with their mobile devices, they are bound to run into poor or dropped network connectivity issues. We must have a strategy around transient faults and network issues, and that’s where Polly comes to the rescue.

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Pro Tip: Useful Code Snippets For Your Xamarin.Forms Development

Code snippets are a hidden gem in Visual Studio that most of us do not pay much attention to. Utilizing them correctly can increase productivity when we have a lot to code. In Visual Studio, code snippets are available for multiple programming languages e.g. C#, F#, XML, HTML, CSS, Python, etc. They are extremely useful when we have a bunch of boiler plate code for our properties, constructors, bindable properties, etc.

Code snippets can be a huge topic, but in this post, I will list some of the XAML and C# code snippets useful when developing Xamarin.Forms mobile applications.

In this post,

  • Snippets
  • Creating Code Snippets
  • C# Examples
  • XAML Examples
  • Export Templates

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Inject Static Libraries And Plugins In Xamarin (Prism.Forms)

When using a container for dependency injection in your Xamarin.Forms app, you may find yourself trying to use a plugin or library that is static that you want to register with your container. Having statics in our code makes it hard to test and causes coupling. In this post, I will demonstrate using Prism.Forms how to inject a static plugin or library that may or may not expose an abstraction.

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Tutorial: BottomNavigationView and ViewPager in Xamarin.Android

Android introduced BottomNavigationView in API 25.1 and I like it. To be honest, one of the biggest difference between iOS and Android for me was the placement of tabs. I enjoyed ActionBar tabs when they were a thing and loved the fact that I could swipe the tabs as I wished. But, when I used the bottom tabs in Android recently, I fell in love instantly. In today’s world of giant smartphones, one can only reach the bottom of the device during one-handed operations, so I loved the fact that I could use my hardware back button to navigate back and switch between tabs all with a single thumb.

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Prism.Forms EventAggregator

Using Prism.Forms EventAggregator with Xamarin.Forms

If you are building a Xamarin.Forms app, it should be a no-brainer that you use MVVM pattern for your code base. It should also be a no-brainer that you give Prism.Forms a try. It makes development fast and code easy to maintain with its plethora of built-in services such for navigation, dependency injection, alerts, events, etc.

I recently added a sample to Prism’s samples library on how to use cross-platform EventAggregator using Prism.Forms in a Xamarin.Forms app.

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Handling Multiple Taps in Xamarin.Forms on Android

Sometimes in this beautiful world of cross-platform mobile development, we come across a problem that makes no sense at first. But after some StackOverflow surfing and Xamarin/MSDN research, we may find a way to tackle that problem. In some scenarios, there are multiple solutions and we have to decide which approach works best given our situation. In this post, I will demonstrate  one of these problems, rather scenarios. The multi-tap monstrosity on Android when using Xamarin.Forms.

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