I need to use firebase_messaging to send message from my backend to my flutter apk.
When initialize firebase, these are the 4 keys essential in the FirebaseOptions
apiKey : Is this the Server Key found in FCM?
appId : Where can I find this key?
messagingSenderId : Sender ID FCM
projectId : Where can I find this?
Besides, in order for me to send message to a single user. I need to tell Firebase who am I right? May I know which ID shall I use?
Thx
When you register with firebase you obtain the push notification token. This token is used to send a notification to the device the app is installed on.
Assuming you already initialized firebase app in flutter, and you added the google-services.json in your app. You can obtain your push notification token in the following way:
messaging = FirebaseMessaging.instance;
messaging.getToken().then((value){
print(value); //this is the push notification token
});
You can also test that you are able to receive the notification on the app from the firebase console. You can send a notification to the app under Compose notification section in the firebase console. It only requires the notification token you obtained from the app.