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https://issues.apache.org/jira/browse/CB-330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13236105#comment-13236105
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Yoh Suzuki commented on CB-330:
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@emile - I observed that in order to kill my app from the task manager, it
first hits my breakpoint in onResignActive (because you actually have to leave
the app in order to see it in the task manager), and then my breakpoint in
onAppTerminate (when I kill it in the task manager). The act of holding the
power button to turn the phone off also triggers onResignActive.
I figured this covers most scenarios, though there may be other situations
(like losing power to the phone somehow, as you mentioned). If one of these
other situations becomes a problem, I will definitely start making manual
backup calls from JavaScript as you suggest. Thanks!
(In that scenario, the trick will be to not call backup too often. If I'm
going to setItem 20 different things, I'd like to call backup just once after
they're all set, especially if localStorage contains lots of data. Maybe a
quick solution would be a buffered call to Cordova.exec backup.)
> 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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