Book Image

PhoneGap 3 Beginner's Guide

By : Giorgio Natili
Book Image

PhoneGap 3 Beginner's Guide

By: Giorgio Natili

Overview of this book

<p>You don’t have to know complex languages like Objective C to compete in the ever-growing mobile market place. The PhoneGap framework lets you use your web development skills to build HTML and JavaScript-based mobile applications with native wrappers that run on all the major mobile platforms, including Android, iOS, and Windows Phone 8.</p> <p>"PhoneGap 3 Beginner's Guide" will help you break into the world of mobile application development. You will learn how to set up and configure your mobile development environment, implement the most common features of modern mobile apps, and build rich, native-style applications. The examples in this book deal with real use case scenarios, which will help you develop your own apps, and then publish them on the most popular app stores.</p> <p>Dive deep into PhoneGap and refine your skills by learning how to build the main features of a real world app.</p> <p>"PhoneGap 3 Beginner's Guide" will guide you through the building blocks of a mobile application that lets users plan a trip and share their trip information. With the help of this app, you will learn how to work with key PhoneGap tools and APIs, extend the framework’s functionality with plug-ins, and integrate device features such as the camera, contacts, storage, and more. By the time you’re finished, you will have a solid understanding of the common challenges mobile app developers face, and you will know how to solve them.</p>
Table of Contents (22 chapters)
PhoneGap 3 Beginner's Guide
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Exploring the Connection API


When working on a mobile app it's important to know the status of the Internet connection. Using the PhoneGap APIs, you can handle this aspect easily; in fact there are two specific events and an object that allows you to get all the possible information. Once the deviceready event has been fired you can register a listener for the online event and another one for the offline event.

document.addEventListener("online", onDeviceOnline);document.addEventListener("offline", onDeviceOffline);

In the onDeviceOnline handler, you can easily access the connection object stored in the navigator.connection property and access the device's cellular and Wi-Fi connection information using the type property. The possible values stored in the type property are:

  • Connection.UNKNOWN

  • Connection.ETHERNET

  • Connection.WIFI

  • Connection.CELL_2G

  • Connection.CELL_3G

  • Connection.CELL_4G

  • Connection.NONE

In order to allow the app to access the connection.type information, you have to add...