Push notifications are critical to craft engaging app experience and increase usage and user interest. Windows Azure Notification Hubs support multi-platform push with Windows, iOS, and Android, publish/subscribe routing to particular groups of users or devices, and low latency broadcast to millions of devices. Join us to learn how to use Notification Hubs to target millions of devices at once and single targeted users with just a few lines of code.

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4. Contact Me
adam grocholski
adgroc@microsoft.com
@codel8r
thinkfirstcodelater.com

8. Windows News app uses
Notification Hubs

10. Client app
Platform
Notification
Service
App back-end

13. iOS app
Windows Store
app
App back-end
APNs
Notification Hub
WNS

16. var hub = new NotificationHub(“<hub name>", "<connection string>");
var channel = await
PushNotificationChannelManager.CreatePushNotificationChannelForApplicationAsync();
await hub.RegisterNativeAsync(channel.Uri);

17. var hubClient =
NotificationHubClient.CreateClientFromConnectionString("<connection
string>", “<hub name>");
var toast = @“<notification payload>";
hubClient.SendWindowsNativeNotificationAsync(toast);

18. (void)application:(UIApplication *)application
didRegisterForRemoteNotificationsWithDeviceToken:(NSData *) deviceToken {
…
SBNotificationHub* hub = [[SBNotificationHub alloc] initWithConnectionString:
@"<connection string>" notificationHubPath:@"mynh"];
[hub registerNativeWithDeviceToken:deviceToken tags:nil completion:^(NSError* error) {
if (error != nil) {
NSLog(@"Error registering for notifications: %@", error);
}
}];
}

19. In your main activity:
Notification Hub hub = new NotificationHub("<hub name>", "<connection
string>", context);
GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(context);
String regid = gcm.register(SENDER_ID);
NativeRegistration r = hub.register(regid);

20. var hubClient =
NotificationHubClient.CreateClientFromConnectionString("<connection
string>", “<hub name>");
var toastForIos = @“<notification payload>";
hubClient.SendAppleNativeNotificationAsync(toastForIos);
var toastForAndroid = @“<notification payload>";
hubClient.SendGcmNativeNotificationAsync(toastForAndroid);

21. var azure = require('azure');
var notificationHubService =
azure.createNotificationHubService('hubname', 'connectionString');
notificationHubService.wns.sendToastText01(null,
{
text1: 'Hello from Node and Mobile Services!'
},
function (error)
{
if (!error) { // message sent successfully }
}
);

22. No need to store and maintain ChannelURIs.
Device registrations expire.

24. App back-end
Tag:”Beatles”
Notification Hub
Tag:”Wailers”
Tag:”Beatles”

28. Notification Hub
App back-end

29. // POST api/register
public async void Post(bool instId, bool channelUri, bool userId) {
// We assume a windows store app (if coding a multiplatform app, a ‘platform‘ parameter should be passed)
…
if (!authorizedToRegisterTag(userId))
{ throw new Exception("User not authorized to register"); }
var regsForInstId = await hubClient.GetRegistrationsByTag(instId, 100);
bool updated = false;
bool firstRegistration = true;
foreach (var registrationDescription in regsForInstId) {
if (firstRegistration) {
var winReg = registrationDescription as WindowsRegistrationDescription;
winReg.ChannelUri = new Uri(channelUri);
winReg.Tags.Clear();
winReg.Tags.UnionWith(new string[] {instId, userId});
hubClient.UpdateRegistration(winReg);
updated = true;
firstRegistration = false;
} else {
// if templates are not used, delete all extra registrations with this installation id.
hubClient.DeleteRegistration(registrationDescription);
}
}
// if not updated, a new registration has to be created for the device
if (!updated) {
hubClient.CreateWindowsNativeRegistration(channelUri, new string[] {instId, userId});
}
}

32. <toast>
<visual>
<binding template="ToastText01">
<text id="1">$(message)</text>
</binding>
</visual>
</toast>
Hello!
{ message: “Hello!” }
App back-end
Service Bus
Notification Hub
Hello!
{
aps: {
alert: “$(message)”
}
}

33. <toast>
<visual>
<binding template="ToastText01">
<text id="1">$(tempF)</text>
</binding>
</visual>
</toast>
73
{tempC: “23”, tempF: “73”}
App back-end
Service Bus
Notification Hub
23
{
aps: {
alert: “$(tempC)”
}
}

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42. Contact Me
adam grocholski
adgroc@microsoft.com
@codel8r
thinkfirstcodelater.com