Here I have two Applications. One acts like Admin and the other is a customer.

When I'm uploading an image in the admin App that image was displayed in the customer app. Here am using PHP as a backend to post images in the admin app and to get images in the customer app. My question is - I want to send a notification to the customer when the admin uploads the image.

Note: If possible, I need to do this task without using Firebase.

Thanks in Advance.

CodePudding user response：

Before start make sure your project is pointing to the Firebase servers. This can be done by opening pubspec.yaml file and adding the below code. To add a library to your flutter application, you need to follow the steps mentioned below.

CodePudding user response：

I try to explain the process in steps:

Assuming your Flutter app is properly integrated with Firebase FCM

1. Admin post an image

2. Server sends a push notification, you may refer to fcm http protocol here or the json structure of your fcm body below

{
 "to" : "<TOKEN>", //if you want the fcm to be sent to specific user
 "notification" : {
     "title": "Notification Title",
     "body" : "Notification Body"
 },
 "data":{
    "click_action": "FLUTTER_NOTIFICATION_CLICK",
    "key": "<ANY STRING YOU WOULD LIKE TO DIFFERENTIATE THE NOTIFICATION>" //eg: "image_update"
 }
}

3. In Flutter code, configure onMessage to tell the app what is needed to be performed when the push notification with key "image_update" is received

    FirebaseMessaging.onMessage.listen((RemoteMessage message) {
      if(message.data['key'] == "image_update"){
         //call GET image API and display on app
      }
      //note: you can differentiate notification type with "key" so that you can perform different functions for each notification type
      return;
    });