Invite users to an ongoing call

By default, participants can only be set when the initiator sends the call invitation. However, Call Kit also supports you to invite users to an ongoing call.

Enable the feature

If you want to enable the feature to invite users to an ongoing call, you can configure the ZegoCallInvitationInCallingConfig.canInvitingInCalling property to true.

Additionally, if you want to permit all users in the call to invite other users, not just the initiator, you can configure the ZegoCallInvitationInCallingConfig.onlyInitiatorCanInvite property to false.

Add a button

You need to add a new button on the call page for call participants to send invitations to external users. The button should call the sendInvitation method.

Because the default call configuration (ZegoUIKitPrebuiltCallInvitationConfig) does not support you to change the bottom menu bar, you should add the button by setting up the ZegoUIKitPrebuiltCallConfigProvider property. For more information, please see Call invitation config - Customize the call configuration

With call invitation

public class MainActivity extends AppCompatActivity {
    long appID = YourAppID;
    String appSign = YourAppSign;
    String userID = "userID";
    String userName = "userName";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initCallInviteService();
    }

    public void initCallInviteService() {
        ZegoUIKitPrebuiltCallInvitationConfig callInvitationConfig = new ZegoUIKitPrebuiltCallInvitationConfig();

        callInvitationConfig.callingConfig = new ZegoCallInvitationInCallingConfig();
        // Whether to enable the feature of inviting users to an ongoing call
        callInvitationConfig.callingConfig.canInvitingInCalling = true;
        // Whether only the person who created the call can invite users to the ongoing call.
        callInvitationConfig.callingConfig.onlyInitiatorCanInvite = false;

        callInvitationConfig.provider = new ZegoUIKitPrebuiltCallConfigProvider() {
            @Override
            public ZegoUIKitPrebuiltCallConfig requireConfig(ZegoCallInvitationData invitationData) {
                ZegoUIKitPrebuiltCallConfig config = ZegoUIKitPrebuiltCallInvitationConfig.generateDefaultConfig(
                        invitationData);

                Button button = new Button(context);
                button.setOnClickListener(v -> {
                    // The callee's user ID and name are both 1.
                    List<ZegoUIKitUser> uiKitUsers = Collections.singletonList(new ZegoUIKitUser("1", "1"));
                    // Invite the callee to a video call
                    ZegoUIKitPrebuiltCallService.sendInvitation(uiKitUsers, ZegoInvitationType.VIDEO_CALL, "", 60, null, null,
                        new PluginCallbackListener() {
                            @Override
                            public void callback(Map<String, Object> result) {
                                Log.d(TAG, "callback() called with: result = [" + result + "]");
                            }
                        });
                });

                config.bottomMenuBarConfig.extendButtons.add(button);
            }
        }

        ZegoUIKitPrebuiltCallService.init(getApplication(), appID, appSign, userID, userName,callInvitationConfig);
    }
}

Copied!

When the above steps are completed, Call Kit will display an invitation button on the call page.