You don’t need an MVVM framework to have a view factory and view model navigation in your Xamarin.Forms app
Quite often I get asked what MVVM framework I use when creating apps, or I’m presented a list of MVVM helpers/frameworks/toolkits and am supposed to pick my preference. Let me admit that I indeed do have a preference (it is the MvvmLight toolkit) but this does not mean that my choice is the right choice for you, your project or your team. In fact, I think that there’s quite some misconception going on: many think that using a framework is a requirement to build an MVVM based app. That’s not true. Let’s see what the definition of MVVM is over at Wikipedia:
MVVM facilitates a separation of development of the graphical user interface – be it via a markup language or GUI code – from development of the business logic or back-end logic (the data model). […] MVVM is a variation of Martin Fowler’s Presentation Model design pattern.
There isn’t a single reference to a specific framework, in fact it is not even limited to a specific platform. It is all about decoupling your UI from the actual logic – that’s it. The frameworks and toolkits out there can help you reduce the amount of code you have to write. Code that would otherwise be repetitive and they also add nice features like handling view model navigation which is the topic I want to cover in this blog post.
My intention is to show you that you can focus on creating your app instead of spending too much time on finding the “right” framework. Also, you might not need most of what these frameworks give you or you don’t agree on the way things work in them, or whatever the reason may be.