Book Image

Xamarin 4.x Cross-Platform Application Development - Third Edition

By : Peppers
Book Image

Xamarin 4.x Cross-Platform Application Development - Third Edition

By: Peppers

Overview of this book

Xamarin is a leading cross-platform application development tool used by top companies such as Coca-Cola, Honeywell, and Alaska Airlines to build apps. Version 4 features significant updates to the platform including the release of Xamarin.Forms 2.0 and improvements have been made to the iOS and Android designers. Xamarin was acquired by Microsoft so it is now a part of the Visual Studio family. This book will show you how to build applications for iOS, Android, and Windows. You will be walked through the process of creating an application that comes complete with a back-end web service and native features such as GPS location, camera, push notifications, and other core features. Additionally, you’ll learn how to use external libraries with Xamarin and Xamarin.Forms to create user interfaces. This book also provides instructions for Visual Studio and Windows. This edition has been updated with new screenshots and detailed steps to provide you with a holistic overview of the new features in Xamarin 4.
Table of Contents (13 chapters)

Adding a friends list screen


The next screen we need for our XamSnap app is our friends list. When creating a new conversation, the app will load a list of friends to start a conversation with. We'll follow a very similar pattern to load our list of conversations.

To begin, we'll create UIBarButtonItem, which navigates to a new controller named FriendsController, by performing the following steps:

  1. Double-click on the Main.storyboard file to open it in the iOS designer.

  2. Add a new Table View Controller to the storyboard.

  3. Select your view controller, click on the Properties pane and make sure you have selected the Widget tab.

  4. Enter FriendsController into the Class field.

  5. Scroll down to the View Controller section and enter Friends in the Title field.

  6. Drag a Navigation Item from the Toolbox onto the ConversationsController.

  7. Create a new Bar Button Item element and place it on the top-right of the new navigation bar.

  8. In the Properties pane of the bar button, set its Identifier to Add. This will use the...