Android Nofification Using OneSignal and Firebase
Ex: AndroidNotification
-Add Server Key from Firebase to OneSignal. -Add Sender Key from Firebase to OneSignal.
-Add Gradle's OneSignle to pass in Project Android compile 'com.onesignal:OneSignal:[3.5.3,4.0.0)'
-Add Key API OneSignal manifestPlaceholders = [onesignal_app_id: "PUT YOUR ONESIGNAL APP ID HERE", // Project number pulled from dashboard, local value is ignored. onesignal_google_project_number: "REMOTE"]