Blackberry webworks app and push notification

Question

after many days searching online, I never found an answer to my problem or even anyone that has managed to do what I'm trying.

I'm trying to implement push notifications in a WebWorks App for Blackberry but without any luck. I've tried using the demos from Blackberry but even those don't seem to work (and most of them are for native apps in java) and there is not feedback whatsoever from BlackBerry support teams.

What I'd like to know is if this is possible, if someone has done it and if someone has a working sample of it for me to guide on.

Thanks in advance

riaan121 riaan121 · Accepted Answer · 2012-10-01T10:45:04

You first need to register for the Blackberry Push service here

They will then send you an email in a couple of days with the app ID, port and push initiator password etc.

On the client side you can then listen for push requests:

var port = 100; // Change this to the port you received from RIM
var appId = "The app ID you received from RIM";

var serverUrl = "http://pushapi.eval.blackberry.com";
var max = 100;

var wakeUpPage = "index.html";

function init() {
    var ops = {port : port, appId : appId, serverUrl : serverUrl, wakeUpPage : wakeUpPage, maxQueueCap : max};
blackberry.push.openBISPushListener(ops, pushReceive, pushRegister, simChange);
}


function pushReceive(data) {
    try {
        var message = blackberry.utils.blobToString(data.payload);
        return 0;
    }
    catch(err) {
    }
}

function pushRegister(status) {
if (status == 0) {
  alert("success");
}
else if (status == 1) {
  alert("network error");
}
else if (status == 2) {
  alert("rejected by server");
}
else if (status == 3) {
  alert("invalid parameters");
}
else if (status == -1) {
  alert("general error");
}
else {
  alert("unknown status");
}
}

window.onload = function() {
    init();
}

Also make sure you have <feature id="blackberry.push" /> and <feature id="blackberry.utils" /> in your config.xml.

What I also noted was that when the app is closed the pushReceive() doesn't get called. You can bypass this by running the app in the background:

function handleExit() {
    blackberry.app.requestBackground();
}

blackberry.app.event.onExit(handleExit);

and use blackberry.app.requestForeground(); to bring app to the front.

The other thing which took me a while to figure out was that it might take a while before pushRegister() is called (this registers the PIN on BIS). So make sure this gets called otherwise you will never be able to receive push messages.

Blackberry webworks app and push notification

2 Answers