Quickblox, chat room does not sends push notification - iphone

Question

I created a chat room in Quickblox, when i sends message to chatroom its offline users does not get any push notification.
To send message :
[[QBChat instance] sendMessage:#"Hey! Did you see last Liverpool match?" toRoom:liverpoolFansRoom];
Is there anything that i am doing wrong or its not enabled on Quickbolx server to sends notification on chatroom's offline users.
Thanx

Answer 1

Push messages does not sends automatically. If you know your recipient user's ID you can send push message manually - you should call method provided below:
[QBMessages TSendPushWithText:#"text"
toUsers:(int)userId
delegate:nil];

Answer 2

Swift 3 :
You can send push notifications for all user connected with the dialog using following code:
var payload = [String:String]()
payload["message"] = message.text!
payload["dialog_id"] = self.dialog.id!
do {
let data = try JSONSerialization.data(withJSONObject: payload, options: .prettyPrinted)
let message = NSString(data: data, encoding: String.Encoding.utf8.rawValue)
var opponentIDs: [String] = []
for userId in self.dialog.occupantIDs! {
// Discard currently logged in user
if userId.uintValue != _user.id {
opponentIDs.append(String(describing: userId))
}
}
let event = QBMEvent()
event.message = message
event.usersIDs = opponentIDs.joined(separator: ",")
event.notificationType = QBMNotificationType.push
event.type = QBMEventType.oneShot
QBRequest.createEvent(event, successBlock: { (response, arrEvents) in
kprint(items: event.name ?? "")
}, errorBlock: { (errRes) in
kprint(items: errRes.error?.description ?? "")
})
} catch {
print(error.localizedDescription)
}