How to implement OAuth 2 with Ionic 3

Hi all… I’m a web dev and new to mobile app. I have created an api and used OAuth2 to secure my api. I am able to request a token and send a request using postman. I would like to test it on ionic 3. However, I don’t know where to start. I’ve seen some tutorials are using { OauthCordova } from 'ng2-cordova-oauth/platform/cordova';, but most of the sample are Facebook, Google and Linkedin authentication.

Can someone please help me on how to connect my api to ionic 3. Thanks.