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PhoneGap By Example

You're reading from   PhoneGap By Example Use PhoneGap to apply web development skills and learn variety of cross-platform mobile applications

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Product type Paperback
Published in Aug 2015
Publisher
ISBN-13 9781785285318
Length 368 pages
Edition 1st Edition
Languages
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Toc

Table of Contents (12) Chapters Close

Preface 1. Installing and Configuring PhoneGap FREE CHAPTER 2. Setting Up a Project Structure with Sencha Touch 3. Easy Work with Device – Your First PhoneGap Application "Travelly" 4. Integrating the Travelly Application with Custom Service 5. Crazy Bubbles - Your First HTML5 Mobile Game 6. Share Your Crazy Bubbles Game Result on Social Networks 7. Building a Real-time Communication Application – Pumpidu 8. Building "Imaginary" – An Application with Instagram-like Image Filters 9. Testing the PhoneGap Application 10. Releasing and Maintaining the Application Index

Filesystem plugin installation and usage


The problem with a native camera is that it stores captured pictures in a temporary folder. For example, the imageURI from the camera plugin taken on an iPhone might look like this: file:///var/mobile/Containers/Data/Application/AB784267-B994-4B54-A81C-EF1180B18738/tmp/cdv_photo_005.jpg.

Next time you run the application, this tmp folder might be cleared. Here are a few possible solutions to the issue:

  • Use base64 data of the picture and store in the internal application's database

  • Move the picture to the persistent store where mobile OS is not able to remove files if more space is needed

The first option doesn't work because there is a limit for database file size and, on modern devices, pictures can be really high-quality and, thus, large. I tried to use this approach and was able to save only three pictures on an iPhone 5. Four pictures were taking more space in the database than is allowed.

So, I followed the second approach. There is a good Cordova...

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