onMessageReceived()
getIntent()
class SimpleFirebaseMessagingService : FirebaseMessagingService() { private val TAG = "spFirebaseMsgService" override fun onMessageReceived(remoteMessage: RemoteMessage) { // when App is in foreground, notification message: if (remoteMessage.notification != null) { // post notification if needed updateContent(remoteMessage.notification) } // process data payload } private fun updateContent(notification: RemoteMessage.Notification) {} }
class SimpleFirebaseMessagingService : FirebaseMessagingService() { private val TAG = "spFirebaseMsgService" override fun onMessageReceived(remoteMessage: RemoteMessage) { // Use data payload to create a notification if (remoteMessage.data.isNotEmpty()) { // step 2.1: decrypt payload val notificationMessage = decryptPayload(remoteMessage.data) // step 2.1: display notification immediately sendNotification(notificationMessage) // step 2.2: update app content with payload data updateContent(remoteMessage.data) // Optional step 2.3: if needed, fetch data from app server /* if additional data is needed or payload is bigger than 4KB, App server can send a flag to notify client*/ if (remoteMessage.data["url"] != null) { scheduleJob() // use WorkManager when it's stable } } // process notification payload when app in foreground... } private fun decryptPayload(dataPayload: Map<String, String>): String { return "decrypted message" } private fun sendNotification(notificationMessage: String) {} private fun updateContent(dataPayload: Map<String, String>) {} private fun scheduleWork() { // it's recommended to use WorkManager when it's stable, use JobScheduler // on background work complete, update the notification if still active } }
'There is another tab open with offline persistence enabled. Only one such tab is allowed at a time. The other tab must be closed or persistence must be disabled.'
const db = firebase.firestore(); db.enablePersistence({experimentalTabSynchronization:true}).then(() => { console.log("Woohoo! Multi-Tab Persistence!"); });
