Book Image

Mobile DevOps

By : Rohin Tak, Jhalak Modi

Book Image

Mobile DevOps

By: Rohin Tak, Jhalak Modi

Overview of this book

Today's world is all about perfection, and there are hundreds of applications that are released each day out of which only a few succeed. Making sure that the app looks, performs, and behaves as expected is one of the biggest challenge developers face today. The main goal of this book is to teach developers to implement DevOps to build, test, and deliver. This book will teach you to implement Mobile DevOps at every stage of your application's lifecycle with Visual Studio and Xamarin Mobile Lifecycle solutions. Later, it will also show you how to leverage Mobile Center's continuous integration and automated testing to develop a high-quality applications. Next, you’ll see how to mobilize your on-premises data to the cloud and increase your productivity with code reuse. Finally, you’ll discover how to find and fix bugs beforehand, improving the efficiency of your application while it is being developed. By the end of this book, you will be well-versed with Mobile DevOps techniques, delivering high quality and high performance mobile apps.

Preface

Who this book is for

What this book covers

To get the most out of this book

Free Chapter

Introduction

Introduction to DevOps

Introduction to mobile DevOps

DevOps versus mobile DevOps

Challenges of applying DevOps to mobiles

Working with Code Repository Systems

Working with Code Repository Systems

Source code management

Creating an account with GitHub and using Git to create a repository

Managing organization users and teams

Installing Git on different servers

Configuring SSH keys

Cross-Platform Mobile App Development with Xamarin

Cross-Platform Mobile App Development with Xamarin

History of Xamarin

Why you should learn Xamarin

Installing Visual Studio and Xamarin on Windows

Setting up our Android Virtual Device for development

Writing Your First Android Application with Xamarin

Writing Your First Android Application with Xamarin

Create your first Android project

Xamarin solution structure

Creating the UI for the application

Handling user interactions

Adding permissions to Android Manifest

Adding an icon for the Android app

Testing user interaction

Application fundamentals

Understanding Activities

Deploying an application on a mobile device

Enable debugging on the device

Install USB drivers

Connect the device to a computer

Pushing code to a Git repository

Implementing Automatic Testing Using Xamarin

Implementing Automatic Testing Using Xamarin

Understanding the importance of automation testing in the DevOps cycle

Testing a mobile application

Writing tests with Xamarin.UITest

Recall the application code

Steps to include in the test

Using Xamarin Test Cloud to test on multiple devices

Creating users and organizations on Test Cloud

Creating a test run for your application

Configuring TeamCity for CI/CD with Xamarin

Configuring TeamCity for CI/CD with Xamarin

Introduction to continuous integration

Using TeamCity with Xamarin for CI/CD

Preparing the build server

Creating a build script

Installing and configuring TeamCity

CI/CD for Android with Visual Studio Team Services

CI/CD for Android with Visual Studio Team Services

Creating an account in Visual Studio

Getting the code from GitHub

Creating the build definition

Configuring the build definition

Triggers - build with every commit

Deploying Applications on AWS

Deploying Applications on AWS

Creation of an instance

Creating an Elastic Load Balancer, launch configuration, and Auto Scaling Groups

Monitoring and Optimizing Application

Monitoring and Optimizing Application

API level monitoring

Various tools for API monitoring

Using Test Cloud for monitoring

Using Android monitoring tools

Debugging the Application

Debugging the Application

Debugging with Xamarin on Visual Studio

Debugging Mono class libraries

Android debug log

Debugging Git connections

Case Studies

Case study 1 - Hello World GUI

Case study 2 - ButtonWidget

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Android APIs

Android APIs are known by an API level, for example, API level 23.

An API level represents a specific Android release. If you open Android SDK Manager in Visual Studio, you will see the following screen:

Each API level is specific to an Android release. An Android release is known by multiple names:

The API level, such as API level 23
The Android version, such as Android 6.0
A code name, such as Marshmallow

So, we can say that APIs have an integer value, a number to identify the release, because with each release this API level changes, and users upgrade their Android versions as they get released.

An Android app should be able to run on different APIs and should be compatible with previous versions of releases, so that old devices can run applications as well, and when a user updates their OS version to a new one, existing apps don't break on their phones...