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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Using FragmentTabHost with ViewPager

On my last project, I wanted to design one of the screens to look like Google Newsstand’s swiping tabs that were also scrollable and had an image between the ActionBar and the tabs.

Google News Screenshot

Google News Screenshot

 

I did not find any simple and useful solution to this that I could easily follow and implement in my app. So I created my own. Here’s how it looks like.

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