What is the syntax of Firebase notification

Question

I want to write the firebase notification as a String like JSON format .. I already sent the notification for one device but when trying to send to multiple devices i got bad request ..

params = new StringEntity("{\n" +
"    \"to\" : \"ds1YTh...UUZOos\",\n" +
"    \"notification\" : {\n" +
"      \"body\" : \""+jobTitle+"\",\n" +
"      \"title\" : \"New Job!\",\n" +
"      \"icon\" : \"hire\"\n" +
"      \"sound\" : \"default\"\n"+
"       \"time_to_live\" : "+3600+
"    }\n" +
"     \"data\": {"+
"     }"+
" }");

how could i do that .. and if I can't do it this way what is the best way to implement this .. I'm using HttpClient and HttpPost and primefaces 5.3

You're using `to` but you intend to send to multiple devices. Have you tried using `registration_ids`? See this [answer](http://stackoverflow.com/a/39547590/4625829). — AL., Dec 13 '16 at 14:50

score 0 · Answer 1 · answered Dec 13 '16 at 13:59

I have done it in Asp.net I hope it will help in some way...

 for (int i = 0; i < dt.Rows.Count (No. of Rows or Device); i++)
            {
 tRequest.ContentType = "application/json";
            var data1 = new
            {
               to="" + DeviceID + "",
               priority="high",
                notification = new
                  {
                      body = Message,
                      is_background = true,
                      title = Heading,
                      appicon = "http://webbestsites.com/images/1_icon.png",
                      sound = "default"
                  },
  }

score 0 · Accepted Answer · edited May 23 '17 at 12:13

First a few relevant links:

Sending notifications to multiple devices not subscribed to a certain topic
the Firebase documentation on sending downstream messages
the Firebase documentation on sending to multiple devices (which covers using topics and device groups)
FCM (Firebase Cloud Messaging) Send to multiple devices

But if you want to stick closest to your current code, you should be able to specify the device tokens in a registration_ids property:

params = new StringEntity("{\n" +
"    \"registration_ids\" : [\"ds1YTh...UUZOos\", \"et2ZUi...VVUPpt\"],\n" +
"    \"notification\" : {\n" +
"      \"body\" : \""+jobTitle+"\",\n" +
"      \"title\" : \"New Job!\",\n" +
"      \"icon\" : \"hire\"\n" +
"      \"sound\" : \"default\"\n"+
"       \"time_to_live\" : "+3600+
"    }\n" +
"     \"data\": {"+
"     }"+
" }");

Thank you VERY VERY much @Frank van Puffelen this perfectly working :) — m 1987, Dec 13 '16 at 21:17

What is the syntax of Firebase notification

2 Answers2