Book Image

Sencha Touch Cookbook

By : Ajit Kumar
Book Image

Sencha Touch Cookbook

By: Ajit Kumar

Overview of this book

Sencha touch is a versatile HTML5-based framework for developing mobile web apps that look and feel native on touch screen devices, and with it you can write your code once and deploy it to both iOS and Android saving you both time and money. The Sencha touch cookbook has a comprehensive selection of recipes covering everything from installation right through to HTML5 geo location. The Sencha Touch Cookbook really is your one stop resource for cross platform HTML5 application development. It covers the basics such as setting up an iOS and Android development environment right through to much more complex development issues such as touch gestures, animation, rich media and geo location. Every recipe is practically focused. Maximum action. Minimum theory.
Table of Contents (17 chapters)
Sencha Touch Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Detecting offline mode


The life of an offline application starts with identifying whether the device/browser is online or offline and, based on that, taking the appropriate action. In this recipe, we will see the different ways that we can identify whether the device or the browser is online or offline, which would help us make decisions in the subsequent recipes. We will start with using PhoneGap API to detect the mode and then later look at other alternatives.

We have already set up our project with PhoneGap support as part of the setup in Chapter 1. You may refer to http://docs.phonegap.com for more details on its APIs.

Getting ready

Make sure that you have set up your development environment by following the recipes outlined in Chapter 1.

Create a new folder named ch08 in the same folder where we created the ch01 and ch02 folders. We will be using this new folder in which to keep the code.

How to do it...

Carry out the following steps:

  1. Create and open a new file named ch08_01.js and paste the...