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From "Emile khattar (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CB-330) localStorage / SQLDatabase no longer persistent after iOS 5.01 Update
Date Wed, 21 Mar 2012 04:16:45 GMT

    [ https://issues.apache.org/jira/browse/CB-330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13234071#comment-13234071
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Emile khattar commented on CB-330:
----------------------------------

@edgar, if you read the code of the plugin you will see that logically no data should be lost
at all.

// onAppTerminate  is fired on UIApplicationWillTerminateNotification
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(onAppTerminate)
name:UIApplicationWillTerminateNotification object:nil];

http://developer.apple.com/library/ios/#DOCUMENTATION/UIKit/Reference/UIApplicationDelegate_Protocol/Reference/Reference.html#//apple_ref/occ/intfm/UIApplicationDelegate/applicationWillTerminate:
This method lets your application know that it is about to be terminated and purged from memory
entirely. You should use this method to perform any final clean-up tasks for your application,
such as freeing shared resources, saving user data, invalidating timers, and storing enough
application state to reconstitute your application’s interface when it is relaunched. Your
implementation of this method has approximately five seconds to perform any tasks and return.
If the method does not return before time expires, the system may kill the process altogether.


five seconds should be enough i think


So in theory this fixed should be good to support people who are using localStorage and Sql
storage.
And the problem i had should be to the error i did by placing the plugin call in the wrong
place.

However i agree with you having some sort of a "natural" persistent storage 



thanks everyone


                
> localStorage / SQLDatabase no longer persistent after iOS 5.01 Update
> ---------------------------------------------------------------------
>
>                 Key: CB-330
>                 URL: https://issues.apache.org/jira/browse/CB-330
>             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: CDVLocalStoragePlugin.zip, Directory-Structure-CB-330.zip, LocalStorageTest.zip,
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: http://developer.apple.com/icloud/documentation/data-storage/
> https://devforums.apple.com/thread/137882?start=0&tstart=0

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