What kind of framework or tools to make Android and iOS App using XML (logic and layout)

Question

I have a project from my developer, they make apps for me Android and iOS apps. When I check the source code they used Java code and they call file XML to load the data and all the logic is in the XML. This is the code structure:

ProjectName
--andkeystore
--Android
--IOS
--plist
----common
----data
----html
----popover
----resource
----screen
----tr
----basescreen.xml
----finger.xml
----login.xml
----intro.xml

This code was created in 2015 - 2016

My question is, what is the framework or tool to make this code? Cuz the developer didn't tell me. Please help

I think they used a hybrid framework to generate this project. Same as Flutter, React Native, Iconic, etc but they use XML so it's not Flutter, React native, and Iconic I guess.

Answer 1

Recalls distant memories ... Xamarin? https://dotnet.microsoft.com/en-us/apps/xamarin

https://en.wikipedia.org/wiki/Xamarin

Xamarin.Forms Introduced in Xamarin 3 on May 28, 2014, and allows one to use portable controls subsets that are mapped to native controls of Android, iOS and Windows Phone.[36] Windows Phone was deprecated and removed in favour of UWP.

It is also possible to target other different platforms such as Tizen (by Samsung), GTK (Linux), WPF and macOS even though they have stayed in Preview.

This system uses XAML. Microsoft has modified this framework to work with the Universal Windows Platform.[37]

Microsoft enables native mobile development with Blazor. Mobile Blazor Bindings allow developers to build native Android and iOS using C#, .NET, and web programming patterns.[38] Uno Platform also supports .NET-based native mobile development.[39]

https://docs.microsoft.com/en-us/visualstudio/xaml-tools/xaml-overview?view=vs-2022

Extensible Application Markup Language (XAML) is a declarative language that's based on XML. XAML is used extensively in the following types of applications to build user interfaces