OneSignal integraton

OneSignal is a high volume and reliable push notification service for websites and mobile applications. To know more about onesignal follow this link - https://onesignal.com/

Follow this link to configure onesignal in your app https://documentation.onesignal.com/docs/android-sdk-setup

Place your OneSignal App ID in build.gradle(Module:app) file in the project

manifestPlaceholders = [onesignal_app_id : "f7821009-c5db-489e-aa38-400482207938",
                        // Project number pulled from dashboard, local value is ignored.
                        onesignal_google_project_number: "REMOTE"]

Replace your generated google-service.json inside App Directory in project