I want to create a project using the web API

Hi Kissu

You have any exp of Web Api or Angular or Android app development ?

If Not

Then you start to Learn these Technologies First start with a small project

After that you can start to integrate web and mobile technologies

You can start from these Links

https://www.c-sharpcorner.com/UploadFile/65794e/web-api-with-angular-js/

https://www.c-sharpcorner.com/article/single-page-application-using-web-api-and-angularjs/

https://angular-templates.io/tutorials/about/learn-how-to-build-a-mean-stack-application