Book Image

Mastering Cross-Platform Development with Xamarin

By : Can Bilgin, Miljenko Cvjetko, Paulo Ortins, Robert Hellestrae, Craig Dunn
Book Image

Mastering Cross-Platform Development with Xamarin

By: Can Bilgin, Miljenko Cvjetko, Paulo Ortins, Robert Hellestrae, Craig Dunn

Overview of this book

The main goal of this book is to equip you with the required know-how to successfully analyze, develop, and manage Xamarin cross-platform projects using the most efficient, robust, and scalable implementation patterns. This book starts with general topics such as memory management, asynchronous programming, local storage, and networking, and later moves onto platform-specific features. During this transition, you will learn about key tools to leverage the patterns described, as well as advanced implementation strategies and features. The book also presents User Interface design and implementation concepts on Android and iOS platforms from a Xamarin and cross-platform perspective, with the goal to create a consistent but native UI experience. Finally, we show you the toolset for application lifecycle management to help you prepare the development pipeline to manage and see cross-platform projects through to public or private release.
Table of Contents (19 chapters)
Mastering Cross-Platform Development with Xamarin
About the Authors
About the Reviewers

Patterns and best practices

It is possible to draw parallels with and even convert from the classic threading and eventing patterns while implementing asynchronous tasks. However, async methods have to be implemented with caution to avoid deadlocks and uncaught exceptions.

Async pattern conversions

The Observer pattern—also known as the Event-based Asynchronous Pattern (EAP)—used to be the main development tool for long running processes and service/remote application APIs. Events and delegates still make up a considerable amount of UI-related implementation in modern applications.

However, asynchronous tasks and awaitables provide a much more convenient way to deal with long running processes and chain completion methods.

Fortunately, it is possible to implement conversion patterns from other async patterns to task-based implementations. These types of scenarios involve using the TaskCompletionSource class.

In order to demonstrate this, we will be using a simplified version of the Fibonacci...