https://stackoverflow.com/q/61159880/8596406
IT IS VERY IMPORTANT
Please don't tell me about Adding Application.java. It's making me confused.

is there an easy way for that: what i need: just if custom notify that has a value in data {"alarm":"start"} my app should start **like coming call in chat apps. its important notify:
{ "registration_ids" :[ "userUniqueToken1", "userUniqueToken2",... ], "notification" : { "body" : "important msg", "title": "you should do some thing now" }, "data":{ "alarm":"start", "click_action":"FLUTTER_NOTIFICATION_CLICK", "status":"done", "id":"1" } }

Is it possible ?

Very Important Note : FCM notification working great, just I need to fire my app if custom notification coming on***

I have to make it work for both Android and iOS. or is there another way to start my app like coming call, please

Hello,
I am testing your code with a new project and replace your google-services.json file. When I send a push notification from firebase and if app is in foreground then onMessage() method gets called and works fine.
But, when my app is in background and if i send a message then notification comes to the notification tray. When i click on the notification and app launches and onResume method gets called but receiving no title and body data.
I didn't change anything in your demo.
I just received both data only first 2-3 times. after that i am not able to receive any data further.
Can you please tell me how to deal with this issue.
Also, how can i get push notification if app is not in foreground and background ?
Thanks.

Hi, your application are Ok but when I'm trying in AndroidX crash de app and close ? do you know what can i do ?

Notification Not Working When the App is Killed or Terminated