6. Application Lifecycle | Learning Xamarin studio

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Learning Xamarin studio

By : Smith

4 (3)

Learning Xamarin studio

4 (3)

By: Smith

Overview of this book

This book is intended for .NET developers with any level of experience and who are interested in building native applications without the hassle of becoming Objective-C or Java experts. Although it will be beneficial to have some development experience, particularly in .NET, Learning Xamarin help even a novice developer get past the headaches of setting up and customizing their new development environment so they can move on to producing high-quality native applications quickly.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. Installing and Setting Up Xamarin Studio

1. Installing and Setting Up Xamarin Studio

Xamarin Studio pricing plans

Xamarin Studio platform options

Installing development components

Installing Xcode and the iOS SDK

Installing Xamarin Studio

Apple Developer Program

Google Play Developer Program

Setting up simulators and emulators

Improving AVD performance

Setting up test devices

Setting up source control

Additional resources for cross-platform developers

Summary

2. Learning and Customizing the XS Environment

2. Learning and Customizing the XS Environment

The Xamarin Studio IDE

Creating your first iOS application

Creating your first Android application

The Solution pad

Design pads

Information pads

Application, File, and Edit menus

View and Search menus

The Project menu

Build and Run menus

The Version Control menu

Tools, Window, and Help menus

Solution Options

Project Options

Environment preferences

Summary

3. Working with Xcode and the Android SDK

3. Working with Xcode and the Android SDK

Introduction to Xcode

Outlets and Actions

Adding a ViewController to our project

XIB, NIB, DESIGNER, and STORYBOARD files

Xamarin Studio Designer for iOS

Creating a storyboard in Xamarin Studio

Android SDK Manager

Xamarin Studio Designer for Android

Creating a Layout in Xamarin Studio

Summary

4. Plugins, Templates, Libraries, and Files

4. Plugins, Templates, Libraries, and Files

Installing the Visual Studio plugin

Creating an iPhone application in Visual Studio

Project templates

Libraries

Files

Summary

5. Working with Xamarin.Forms

5. Working with Xamarin.Forms

Requirements for using Xamarin.Forms

The Xamarin.Forms project templates

The components of Xamarin.Forms

The API design

The XAML design

Summary

6. Application Lifecycle

6. Application Lifecycle

The iOS application lifecycle

UIViewController lifecycle methods

The Android application lifecycle

The background state

Summary

7. Testing and Debugging

7. Testing and Debugging

The Xamarin debugger

Unit tests

Creating a unit test project

Simulators

Testing in an iOS simulator

Testing in an Android emulator

Device testing

TestFlight

Instruments

Device Monitor

Logs

Other testing considerations

Summary

8. Deployment

8. Deployment

Deploying iOS applications

Deploying Mac applications

Deploying Android applications

Summary

A. Images and Graphics Tables

A. Images and Graphics Tables

iOS application icons

iOS 3.5-inch Retina display screenshots

iOS 4-inch Retina display screenshots

iOS iPad screenshots

Mac OS X app screenshots

Android application icons

Android screenshots

Index

Index

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UIViewController lifecycle methods

The following is a flowchart depicting a UIViewController lifecycle:

The UIViewController class is the base class responsible for managing the communication between model and view classes in an iOS. A View's lifecycle is defined by several methods that can be overridden in any class that inherits from UIViewController. While you are loading a view into the display, these events will fire in the order they are listed here:

ViewDidLoad(): This is arguably the most important event in any UIView's lifecycle. This method is called when the view and its entire display hierarchy have been loaded into memory, whether the view was created programmatically or loaded from a XIB file. This method is a good place to wire up event handlers and create any additional views that were not created programmatically or in the XIB file. Also, this is where you should do any configuration work that could not be done in the XIB file.
ViewWillAppear(): This event is called prior...

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