Book Image

Mastering PhoneGap Mobile Application Development

By : Kerri Shotts
Book Image

Mastering PhoneGap Mobile Application Development

By: Kerri Shotts

Overview of this book

PhoneGap is a useful and flexible tool that enables you to create complex hybrid applications for mobile platforms. In addition to the core technology, there is a large and vibrant community that creates third-party plugins that can take your app to the next level. This book will guide you through the process of creating a complex data-driven hybrid mobile application using PhoneGap, web technologies, and third-party plugins. A good foundation is critical, so you will learn how to create a useful workflow to make development easier. From there, the next version of JavaScript (ES6) and the CSS pre-processor SASS are introduced as a way to simplify creating the look of the mobile application. Responsive design techniques are also covered, including the flexbox layout module. As many apps are data-driven, you'll build an application throughout the course of the book that relies upon IndexedDB and SQLite. You'll also download additional content and address how to handle in-app purchases. Furthermore, you’ll build your own customized plugins for your particular use case. When the app is complete, the book will guide you through the steps necessary to submit your app to the Google Play and Apple iTunes stores.
Table of Contents (19 chapters)
Mastering PhoneGap Mobile Application Development
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Closing the database


Whenever your application is closed or terminated, the database will be closed automatically for you. If your need for the database is fleeting, you might seriously want to consider closing the database manually. You may also want to consider closing databases manually if you find yourself needing to open a lot of databases for short-lived transactions.

You can do so by calling close. Technically, you could monitor the status of the close operation by inspecting the returned request object. But usually, there's no need to do so. Do note that the database won't be immediately closed; the operation itself is still asynchronous, so if you need to immediately re-open the database, you'll definitely have to add a success handler (or a then handler while using Treo with promises).