Android Question GCM about idle mode to receive messages.

Sub send_online_status()

    Dim Job As HttpJob
    Job.Initialize("send message",Me)
    Job.PostString("https://android.googleapis.com/gcm/send","#Y#" & strUserEmail & "#")
    Job.GetRequest.SetHeader("Authorization","key=" & apikey)
   
End Sub

Sub btnSend_Action
    Dim keys As string = "xxxxxxxx" ' device registration id
    Dim apikey as string = "xxxxxxxx"
    Dim json As JSONGenerator
    Dim m As Map
    m.Initialize
    m.Put("registration_ids", keys)
    Dim data As Map
    data.Initialize
    data.Put("data", "Yes")
    'you can add more fields to data and then read them on the device.
    m.Put("data", data)
    json.Initialize(m)
    Dim job As HttpJob
    job.Initialize("send message", Me)
    job.PostString("https://android.googleapis.com/gcm/send", json.ToString)
    job.GetRequest.SetContentType("application/json")
    job.GetRequest.SetHeader("Authorization", "key=" & apikey)
End Sub