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

The SoundHandler interface


One issue with playing audio across multiple platforms is we can't share much code when processing audio. We must create an interface and register implementations through an IoC container.

Our next step is to create the ISoundHandler interface. In the AudioPlayer.Portable project, add in a new folder called Sound. In this folder, add a new file called ISoundHandler.cs and implement the following:

public interface ISoundHandler 
    { 
        bool IsPlaying { get; set; } 
 
        void Load(); 
 
        void PlayPause(); 
 
        void Stop(); 
 
        double Duration(); 
 
        void SetPosition(double value); 
 
        double CurrentPosition(); 
 
        void Forward(); 
 
        void Rewind(); 
    } 

Our interface will describe all the functions we will be using to process our audio streams via the AudioPlayerPage interface.

Now let's go ahead and start with the iOS implementation.