O'Reilly logo

Cross-platform UI Development with Xamarin.Forms by Paul F. Johnson

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 10. This is the World Calling…

An application that sits will just do that. It has no idea about the outside world, no idea about anyone trying to contact them, and moreover, no idea about where it is. In the last chapter, we looked at how to use the address book. In this chapter, we will expand on this, use some of the hardware facilities, and communicate with the outside world via push notifications.

In this chapter, we will:

  • Learn how to implement push notifications
  • Incorporate maps and GPS with your app

Using GPS and push notifications

One useful feature of a messenger app would be to find people who are also using the application. In order to do this, we will need to talk from the PCL to the app and then send this up to the server.

The server ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required