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From "Samuel Michelot (Commented) (JIRA)" <>
Subject [jira] [Commented] (CB-330) localStorage / SQLDatabase no longer persistent after iOS 5.01 Update
Date Tue, 17 Apr 2012 21:03:13 GMT


Samuel Michelot commented on CB-330:

Thanks for your quick answer Shazron. But after new testing, I can confirm that there is a
problem (at least in the iOS 4.3 simulator). To reproduce the problem, I need to delete the
app, then reinstall it, and launch it twice in the iOS 4.3 simulator.

I added this log in the verifyAndFixDatabaseLocations :
NSLog(@"Error in database locations?: Old Value=%@, newValue=%@", value, newBundlePath);

And I got this on the second launch (on the first launch, the fix is not applied) :

Error in database locations?: Old Value=(null), newValue=/Users/sam/Library/Application Support/iPhone
2012-04-17 15:52:30.896 Mosa_fr_es[10279:12e03] Fix applied for database locations?: YES

And you can see in the following screenshot that 2 DB are created (in WebKit for the first
launch, and in Caches for the second launch) :

Maybe we shouldn't apply the fix if the value is null, or only call this method when iOS >=5.1
> localStorage / SQLDatabase no longer persistent after iOS 5.01 Update
> ---------------------------------------------------------------------
>                 Key: CB-330
>                 URL:
>             Project: Apache Callback
>          Issue Type: Bug
>          Components: iOS
>    Affects Versions: 1.3.0, 1.4.0, 1.5.0
>         Environment: iOS 5.01
> PhoneGap (Any version)
> Xcode 4
> Build.PhoneGap
>            Reporter: Amirudin Bin Mohamed Ghani
>            Assignee: Shazron Abdullah
>            Priority: Blocker
>              Labels: ios5.01, localstorage, sqldatabase, websql
>             Fix For: 1.6.0
>         Attachments:,,,
README.txt, iOS WebKit Database Locations.txt
> Dear Dev
> WebKit data (localstorage or local SQLite) are now stored in Library/ Caches folder (instead
of Library/WebKit folder). This is a big problem for all apps using UIWebView and storing
user data, because they will no longer be backed up and may be deleted. There are a lot of
apps using localstorage or SQLite as a critical feature. 
> The SQLite database gets deleted because the database is saved in a location on the filesystem
which Apple does not consider to contain persistent data.
> *Steps to Reproduce:* 
> In a UIWebView, create a new DB or use localStorage with JavaScript. 
> You can see that the WebKit data is now stored in Library/Caches :  
> *Expected Results:*
> We should at least specify the directory of WebKit data (and to set it 
> to Documents/ for critical data) 
> *Actual Results:* 
> The WebKit data are stored in Library/Caches folder, and can be 
> deleted 
> *Regression:*
> To migrate database location from Library/Caches to some other location such as Documents.
> ----
> Ref:

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