How to use maui preferences in class library?

Question

Hi,

I have created one Maui application and in the same solution created one class library to maintain services.(please refer solution image)

Now I need to store one value in preferences in service class. But service class in class library.

So how can we access preferences in class library.

Note: if it is a Maui Class library then we can use preferences as it has Microsoft.Maui.Essentials. But I need to use Preferences in Class library only.

Please suggest me

, Thanks.

Answer 1

If you really want to use a regular assembly for the service, you could use dependency injection to help you.

Create an interface in your service project to allow the setting and retrieval of preferences:

In the Maui project create an implementation of this interface. You can use the code from the Preferences class for this (https://learn.microsoft.com/en-us/dotnet/maui/platform-integration/storage/preferences?view=net-maui-8.0&tabs=windows)

And use the Service collection to combine the 2.

I have included MainPage as well, because I use this Page to inject the interface into.

The entire code can be found at: https://github.com/JohanSmarius/DependenciesInMaui

Answer 2

Hi @Johan Smarius , thanks for reply. I have implemented the solution and working fine.

And I got another solution also...

Using a <UseMaui>true</UseMaui> in csproj file is enabling to install microsoft essentials. so then i was able to use preferences in class library too.