Phonegap offline storage

Question

I'm working on a phonegap iPhone app which downloads content from the network in the form of HTML docs with text, images, and embeded HTML5 videos.

I want to download these documents as they're available and store them locally, for further reading in offline mode. I've searched a bit and found that the optimal place to store this kind of data would be in the app's Documents folder. However, I don't really know how to access it with the Phonegap API.

I know how to create an XHTML file from js, but how do I read/write files from/to my own app's Documents folder?

If only there was a way to access a photo from the device's browser cache - that would save you having to manage it yourself... — Magnus Smith, Nov 26 '12 at 11:13

score 6 · Accepted Answer · edited May 05 '18 at 14:14

6

you can store the in the sqlite database provided by the browser.

https://developer.apple.com/library/content/documentation/iPhone/Conceptual/SafariJSDatabaseGuide/UsingtheJavascriptDatabase/UsingtheJavascriptDatabase.html

edited May 05 '18 at 14:14

Cœur

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answered Aug 22 '10 at 16:04

Aaron Saunders

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A whole XHTML page on a database field? – StJimmy Aug 22 '10 at 18:11
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You can use the file io. http://phonegap.pbworks.com/JavaScript-API#file But some people have mentioned better performance with the database – Aaron Saunders Aug 22 '10 at 18:21
Thanks a lot for both links. They were vere helpful. – StJimmy Aug 22 '10 at 19:17
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The most up-to-date info for Phonegap dbs is here: http://docs.phonegap.com/phonegap_storage_storage.md.html – Haroldo May 30 '11 at 07:50

score 3 · Answer 2 · answered Oct 21 '12 at 20:14

I wouldn't store the video data in a database. Also in web sql there is a 50MB limit for the entire database in IOS. I would use the PhoneGap File API to hook into the filesystem http://docs.phonegap.com/en/2.1.0/cordova_file_file.md.html#File

Also consider encrypting the videos by writing an objective c plugin or using something like RNCryptor https://github.com/rnapier/RNCryptor

Phonegap offline storage

2 Answers2