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Ionic Cookbook
Ionic Cookbook

Ionic Cookbook: Over 35 exciting recipes to spice up your application development with Ionic

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Ionic Cookbook

Chapter 2. Managing States and Navigation

In this chapter, we will cover the following tasks related to views and states:

  • Creating a tab interface with nested views
  • Creating a multistep form with validation

Introduction

It's possible to write a simple app with a handful of pages. However, when the app grows, managing different views and their custom data at a specific time or triggered event could be very complex. Ionic comes with UI-Router by default. You should leverage this advanced routing management mechanism. In general, the following holds true:

  • A view should have its own state, which is basically a JSON object
  • A route (URL) will point to a view and its assigned controller
  • A state and view should allow nested views so that you can manage hierarchy

Since Ionic introduces many new components, you have to understand how these components impact your app state hierarchy and when each state is triggered.

Creating a tab interface with nested views

This recipe will explain how to work with the Ionic tab interface and expand it for other use cases. For example, it's possible to have additional views (that is, children) within each tab. Since each tab has its own view and state, you can also watch the tab change event. The following is the screenshot of the app:

Creating a tab interface with nested views

In this app, you will learn the following:

  • How to create nested views and states
  • How to create a custom title per view
  • How to watch for state changes and inject your own conditions depending on the new state

You will also use $ionicLoading, which is a very useful directive if you need to temporarily show some content on the screen (that is, a loading indicator).

Getting ready

Since AngularJS UI-Router comes with the Ionic bundle, there is no need to download an external library. You can test this in a web browser as well.

How to do it...

Here are the steps to create a tab interface with nested views:

  1. Create a new app using the blank template...

Creating a multistep form with validation

Forms are everywhere on the web as well as in mobile apps. If you go through a registration process, it's done using a form. In a shopping cart solution, the user also steps through a multipage form that consists of address, payment information, confirmation page, and so on.

The example in this recipe will explain how to create a form for your app that can be placed in multiple pages and which can have a specific validation for each page. This may sound simple, but it can get complex when there are many pages involved and the user must be available to navigate back and forth. However, you give a lot of flexibility to the users, which results in a better experience.

The app will have four steps. Let's go through the app's functionality:

  1. The first step will require three text fields with one field as optional:
    Creating a multistep form with validation

    If the user does not fill in the First Name and Last Name fields, they will see the following error:

    Creating a multistep form with validation
  2. Clicking on Next will lead to...
Left arrow icon Right arrow icon

Description

The world of mobile development is extremely fragmented with many platforms, frameworks, and technologies available. Ionic is intended to fill that gap, by enabling developers to build apps that have a native feel to them, using web technologies such as HTML, CSS, and AngularJS. Ionic makes it easy for front-end developers to become app developers. The framework provides superior performance with deep Cordova integration and a comprehensive set of tools for prototyping, backend support, and deployment. Ionic Cookbook takes you through the process of developing a cross-platform mobile app using just HTML5 and the JavaScript-based Ionic. You will start with an introduction to the CLI and then move on to building and running an app. You will explore common features of real-world mobile apps such as authenticating a user, and getting and saving data using either Firebase or Local Storage. Next, the book covers how Ionic integrates with Cordova to support native device features using ngCordova, and you will discover how to take advantage of existing modules around its ecosystem. You will also delve into advanced topics, including how to extend Ionic to create new components. Finally, the book will walk you through customizing the Ionic theme and building the app so that it can be deployed to all platforms.

Who is this book for?

If you are a front-end developer and want to take advantage of your existing mobile application development skills to develop cross-platform mobile apps, this book is for you. You will build up your Ionic knowledge with in-depth recipes on Angular.js, Cordova, and Sass.

What you will learn

  • Authenticate users using an email password, Twitter, Facebook, Google+, and LinkedIn
  • Retrieve data and store it using Firebase
  • Access native device functionalities such as a camera, contact list, email, and maps using ngCordova
  • Work with localStorage and SQLite for persistent data access on the client side
  • Communicate to and from your app using push notifications or SMS
  • Leverage AngularJS events and Ionicspecific events to communicate across pages, controllers, and directives
  • Customize the color and theme of your Ionic app
  • Create new custom directives as components
  • Compile your app for iOS, Android, and Windows Phone
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Publication date : Oct 30, 2015
Length: 264 pages
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Language : English
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Getting Started with Ionic
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Learning Ionic
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Table of Contents

11 Chapters
1. Creating Our First App with Ionic Chevron down icon Chevron up icon
2. Managing States and Navigation Chevron down icon Chevron up icon
3. Adding Device Features Support Chevron down icon Chevron up icon
4. Offline Data Storage Chevron down icon Chevron up icon
5. Handling Gestures and Events Chevron down icon Chevron up icon
6. App Theme Customization Chevron down icon Chevron up icon
7. Extending Ionic with Your Own Components Chevron down icon Chevron up icon
8. User Registration and Authentication Chevron down icon Chevron up icon
9. Saving and Loading Data Using Firebase Chevron down icon Chevron up icon
10. Finalizing Your Apps for Different Platforms Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon

Customer reviews

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Full star icon Full star icon Full star icon Full star icon Half star icon 4.2
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4 star 25%
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2 star 5%
1 star 10%
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Will Dec 13, 2015
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Overall: Great book! I'm a .Net developer with some angularjs experience wanting to make the jump into mobile dev. I've hesitated because of the investment required to learn a native platform...my hands are full keeping up with my stack lol. The author has just the right mix of content to cover app creation from start to finish in a manner that can be used in a real world app. Also, he covers iOS and Android paths, I went with Android (being tied to Windows) but that's the beauty of Ionic, you can choose your dev path - the author shows you how. I've been interested in Ionic for some time because of its use of AngularJS so this book was just what I needed to make the jump, thanks Hoc Phan!
Amazon Verified review Amazon
Amazon Customer Jan 29, 2016
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Very thorough walkthrough of not only the Ionic Framework, but hybrid application development in general. Phan has painstakingly detailed everything from the basic setup steps to get an app up and running quickly, to the idiosyncrasies one would face when dealing with different platforms (web, IOS, Android).It is impossible to fill every gap in the hybrid application development paradigm, but this book does a great job in covering most of the major strategies from which one can discern their own solutions. I have been doing application development for over 15 years, and have found some great gems in this book that I've added to my tool belt.
Amazon Verified review Amazon
Injae Kim Jul 13, 2016
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This book is practical and there are many useful things in the book. I would like to recommend not only a Ionic beginner but also experienced Ionic developer.
Amazon Verified review Amazon
Vicky P. Dec 06, 2015
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I have been looking for some book so my son can expand his programming knowledge, which he picked up from a local CoderDojo organization last year. I had a chance to go through some review process with the author. My son really likes this book because right on the first chapter, he was able to have an app running on his old iPhone 4 right away. That is with zero coding. He said he loves Ionic Framework.The book is very easy to follow although it assumes the reader has to know Javascript and at least some Angular ahead of time. But it is no big deal if you are not an expert in Angular because the author provides some very useful links to follow and read for further information. The "cookbook" format means exactly what it sounds. You have specific recipes such as "how to get the camera to work" and it takes you through step-by-step of how to do it. It doesn't skip any detail. So you not only get code samples but exactly where to click (in an IDE or portal, for example)!!I am very happy with this book and can't wait for my son to build me some apps :)
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hegp Mar 29, 2016
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none
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