Book Image

Mastering Xamarin.Forms - Second Edition

By : Ed Snider
Book Image

Mastering Xamarin.Forms - Second Edition

By: Ed Snider

Overview of this book

Discover how to extend and build upon the components of the Xamarin.Forms toolkit to develop effective, robust mobile app architecture. Starting with an app built with the basics of the Xamarin.Forms toolkit, we'll go step by step through several advanced topics to create a solution architecture rich with the benefits of good design patterns and best practices. We'll start by introducing a core separation between the app's user interface and the app's business logic by applying the MVVM pattern and data-binding. Then we will focus on building out a layer of plugin-like services that handle platform-specific utilities such as navigation and geo-location, as well as how to loosely use these services in the app with inversion of control and dependency injection. Next we'll connect the app to a live web-based API and set up offline synchronization. Then, we'll dive into testing the app logic through unit tests. Finally, we will setup Visual Studio App Center to automate building, testing, distributing and monitoring the app.
Table of Contents (11 chapters)

Adding identity and authentication to Azure Mobile Apps

In the previous chapter, we set up a new, live backend using an Azure Mobile App Service. The service contains a single table named Entry, which houses all log entries for our TripLog app. Currently, the Entry table is available anonymously. In this section, we will change the permissions on the Entry table to require each request to contain an access token associated with an authenticated user.

Setting up permissions

In order to enforce authentication to access our backend service, we will need to make a simple configuration change to the Entry table:

  1. Select your TripLog App Service in the Azure portal.
  2. Click on Easy Tables in the MOBILE section in the left-side pane...