Complete Tutorial in: https://ionicthemes.com/tutorials/about/ionic2-twitter-login
In this post you will learn how to add Twitter Login to your Ionic 2 app. Social login is becoming the preferred way to let users log into your app so check this tutorial to discover how easy it's to do it.
As an example we are going to build a simple app that allows users to login to your app using their Twitter account. Once they log in, they will see a home page with their basic profile info.