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

Chapter 9. Manipulating Files

Accessing the filesystem is a critical part of an app's business logic. The PhoneGap framework offers a very sophisticated API to access and read files, even download and upload data over the Internet. One of the strengths of the PhoneGap framework is that it widely relies on the W3C open standard. If you are familiar with the W3C FileSystem and FileUpload APIs, you will be impressed how quickly you will get used to the device filesystem.

In this chapter you will:

  • Learn about the Files API, how it works, and how to organize your code to keep it clear and maintainable

  • Use the Files API to explore the device filesystem

  • Learn how to read and render data inside a file

  • Learn how to load and save a file to a device's persistent storage