Разработка уведомления для Андроид приложение

Hello, I have gone through the details Develop popup notification for android app. Plus, should the user be able to configure notifications as in a telegram. Please open a chat window for more discussion I will share with you my previous work to get more confidence and we will make a deal and work on our project. I am an expert in web and mobile app design & development with 5 years of experience. I have delivered many successful applications in the global market. Looking forward to a positive response from you. Thanks