I create java rest api service, I need to make push notifications to android devices , my code is
Pushraven.setKey("KEy");
Notification raven = new Notification();
raven.title(title)
.text(message)
.color("#ff0000")
.to("User token");
FcmResponse response = Pushraven.push(raven);
Pushraven.setNotification(raven);
System.out.println("Respose: "+response.getResponseCode());
raven.clear();
The question is, how to check is my notifications brought to device successfully, response.getResponseCode()
always return 200 but some times message doesn't come to device