Kotlin
Create your Vonage Application
In this step you will create a Vonage Application capable of in-app voice communication use cases.
Open a new terminal and, if required, navigate to your project directory.
Create a Vonage application by copying and pasting the command below into terminal:
vonage apps create 'Your application' ✅ Creating Application Saving private key ... Done! Application created Name: Your application Application ID: 00000000-0000-0000-0000-000000000000 Improve AI: Off Private/Public Key: Set Capabilities: None Enabled
Now that your Vonage Application has been created, update your CLI auth with the Application ID and Private Key:
vonage auth set \ --local \ --api-key='your-api-key' \ --api-secret='your-api-secret' \ --app-id='your-application-id' \ --private-key=/path/to/private.key API Key: your-api-key API Secret: your-************** App ID: your-application-id Private Key: Is Set ✅ Checking API Key Secret ✅ Checking App ID and Private Key
Next, configure the webhooks on your Vonage Application. Make sure to change the values of --voice-answer-url and --voice-event-url arguments, by replacing the URLs with https://SUBDOMAIN.loca.lt/voice/answer and https://SUBDOMAIN.loca.lt/voice/event respectively. SUBDOMAIN is the actual value used in the previous step:
vonage apps capabilities update 00000000-0000-0000-0000-000000000000 voice \ --voice-answer-url='https://example.com/webhooks/voice/answer' \ --voice-event-url='https://example.com/webhooks/voice/event' \ --voice-fallback-url='https://example.com/webhooks/voice/fallback' ✅ Fetching Application ✅ Adding voice capability to application 00000000-0000-0000-0000-000000000000 Name: Your application Application ID: 00000000-0000-0000-0000-000000000000 Improve AI: Off Private/Public Key: Set Capabilities: VOICE: Uses Signed callbacks: On Conversation TTL: 41 hours Leg Persistence Time: 6 days Event URL: [POST] https://example.com/webhooks/voice/event Answer URL: [POST] https://example.com/webhooks/voice/answer Fallback URL: [POST] https://example.com/webhooks/voice/fallback
NOTE: Information about your application, including the Application ID, can also be found in the Dashboard.
Making an app to app voice call
Make a voice call from an Android app to the same Android app installed on other device using the Android Client SDK.
Steps
1
Introduction to this task2
Prerequisites3
Create a webhook server4
Create a Vonage Application5
Create the users6
Generate JWTs7
Create an Android project8
Add permissions9
Build main screen10
Initialize the client11
Receive call12
Place a call13
What's next?