In this tutorial, you will learn how to create an Android application using kotlin and the Nexmo Android Client SDK, and then write the code to make a phone call from your Android app to another Android app. The source code is available on GitHub.
Two parts are needed to achieve this:
- An Android application that will make the voice call and listen for incomming calls using the Client SDK.
- A publicly accessible URL that serves instructions on how to handle the call. To accomplish this, you will create a webhook server using Node.js, Express and localtunnel.
If you prefer to follow along by video, you can find this tutorial on YouTube:
This tutorial uses NexmoClient version 4.0
Making an app to app voice callMake a voice call from an Android app to the same Android app installed on other device using the Android Client SDK.