Book Image

Xamarin Blueprints

By : Michael Williams
Book Image

Xamarin Blueprints

By: Michael Williams

Overview of this book

Do you want to create powerful, efficient, and independent apps from scratch that will leverage the Xamarin framework and code with C#? Well, look no further; you’ve come to the right place! This is a learn-as-you-build practical guide to building eight full-fledged applications using Xamarin.Forms, Xamarin Android, and Xamarin iOS. Each chapter includes a project, takes you through the process of building applications (such as a gallery Application, a text-to-speech service app, a GPS locator app, and a stock market app), and will show you how to deploy the application’s source code to a Google Cloud Source Repository. Other practical projects include a chat and a media-editing app, as well as other examples fit to adorn any developer’s utility belt. In the course of building applications, this book will teach you how to design and prototype professional-grade applications implementing performance and security considerations.
Table of Contents (14 chapters)
Xamarin Blueprints
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface

Chapter 4.  Building an Audio Player Application

In this chapter, we move back to native Xamarin. We will integrate native audio functions for processing a sound file using the AVFramework in iOS with the AVAudioSessions, AVAudioSettings, and AVAudioRecorder objects. In Android you will use the MediaPlayer object from the Android.Media library.

Expected knowledge:

  • Some knowledge of either iOS AVAudioSessions, AVAudioSettings, and AVAudioRecorder, or the Android MediaPlayer and MediaRecorder classes

  • NSLayoutConstraints

In this chapter, you will learn the following:

  • Project setup

  • Inversion of control with MVVMCross

  • View models with Xamarin native

  • Creating the bindings

  • NSLayoutContraints

  • MVVMCross setup inside the Portable Class Library

  • Setting up MVVMCross with iOS

  • Setting up MVVMCross with Android

  • The SoundHandler interface

  • Implementing the iOS SoundHandler using the AVAudioPlayer framework

  • The Mvx IoC container

  • The audio player

  • A cleaner code approach to NSLayout

  • Creating AudioPlayerPageViewModel

  • Implementing...