To implement call notification, you need to integrate the Agora Video SDK, the Agora Signaling SDK, and platform-specific call APIs such as ConnectionService for Android, CallKit for iOS, and CallKeep for Flutter and React Native. The Signaling SDK supports call notification only when the app is running. So, you also need to integrate platform-specific APIs to ensure that users can still receive call notifications when the app is on the background or the process is closed.
Step 1: Integrate the Video SDK and the Signaling SDK
Refer to the following articles to learn how to integrate the VSDK and the Signaling SDK:
Step 2: Use the Signaling SDK to implement the basic functionalities of call invitation
To implement call invitation for the Signaling SDK, see Call Invitation.
Step 3: Integrate platform-specific call APIs and implement call notification
For the Android platform, see ConnectionService official documentation.
For the iOS platform, see CallKit official documentation.
For the Flutter platform and the React Native platform, refer to the official documentation of Flutter and React Native.