Sending a notification-only payload to GCM using AWS SNS

Question

I want to send mobile push notifications to GCM via AWS SNS. And as per the documentation, one may include either a "notification" payload or a "data" payload. And if we send a notification payload, then GCM will take care of showing the notification on the end-user device for you.

Using AWS SNS Console, I tried sending a notification-only payload but got the below error:

Invalid parameter: Message Reason: Invalid notification for protocol GCM: data key is expected in the json message (Service: AmazonSNS; Status Code: 400; Error Code: InvalidParameter)

I'm sending:

{

  "GCM":"{\"notification\":{\"title\":\"Test Message\"}}"

}

Can anyone help me out?

Answer 1

SNS currently does not currently support GCM's "notification" payload type as per their documentation. SNS supports "data" payload type only. So until SNS supports GCM notification payload, you have to handle the display of notifications yourself by extending the class "GcmListenerService" and overriding the method "onMessageReceived".

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