I have a service running, and would like to send a notification. Too bad, the notification object requires a Context, like an Activity, and not a Service.Open your device's Settings app. This topic lists and describes the types of Realtime developer notifications that you can receive from Google Play. Firebase Cloud Messaging is a realtime solution for sending notifications to client apps without any kind of charges. The people and conversations initiative is a multi-year Android initiative that aims to elevate people and conversations in the system surfaces of the phone. NotifyLA is the City of Los Angeles' mass notification system used to provide emergency information regarding necessary protective actions. Looking to receive alerts from your local agencies and businesses? Android allows 3 notification actions. When you sign in to your Google Account, you can tap a notification on your phone to confirm it's you.