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https://issues.apache.org/jira/browse/CB-6667?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14013652#comment-14013652
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Clayton Grassick commented on CB-6667:
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Personally, I'm on Cordova 3.5.0-0.2.4 and the file plugin was cloned within
the last week.
> window.requestFileSystem - callbacks are not fired in a particular
> circumstance
> -------------------------------------------------------------------------------
>
> Key: CB-6667
> URL: https://issues.apache.org/jira/browse/CB-6667
> Project: Apache Cordova
> Issue Type: Bug
> Components: Plugin File
> Affects Versions: 3.4.0
> Environment: Mac OS X 10.9.2
> Android SDK (latest) - API v19
> Eclipse 4.2.2
> Reporter: Kelvin Dart
> Priority: Critical
> Labels: Android4.4.x, Cordova, androidmanifest.xml, window
>
> Excuse the essay, but I have a very odd issue that I have singled down to
> Cordova which happens in a very specific circumstance on Android.
> I have provided a project of the stock Cordova Android project which can be
> found here: http://www.filedropper.com/windowfstest - with a minor
> modification for the issue I am having.
> I have uploaded a compiled APK to install to your device here:
> http://www.filedropper.com/windowfstest140509-1404
> Steps to replicate are:
> 1) Download and install that APK onto your device (I was using the Samsung
> Galaxy S4 with Android 4.4.2 running, no root, and stock TouchWiz ROM, I
> *hope* this occurs on other Android devices but have not had an opportunity
> to verify).
> 2) Start the application and observe an alert appears stating 'dr', then
> afterwards another alert appears, 'got FS' - if you check the code, you'll
> see this is normal from my app.initialize().
> 3) Once those two alerts have appeared, press the Android 'home' button, to
> quit to the main Android home screen.
> 4) Go into another app or two and just use your phone normally. What we are
> trying to achieve here is for the Android memory management system to
> 'end'/kill the WindowFSTest app in the backend.
> 5) Go into Apps > WindowFSTest (i.e. the app in question) and hopefully it
> will have restarted - the app has to have restarted for the bug to occur, and
> observe a few things here:
> a) Verify the app has restarted, this can be verified by the 'dr' popup
> occuring when Cordova loads.
> b) Once you are confident the app has been restarted, observe the initial
> 'dr' popup, but *not* the 'got FS' popup - this is the bug, the
> window.requestFileSystem does not fire the callbacks for some reason - and I
> do not know why.
> N.b. there are a few things to note here which is why the bug is tricky to
> replicate AND I imagine will be even more difficult to debug at a lower level
> ;-)
> 1) The Android system has to kill the app in the backend once you've pressed
> the 'home' button - there's no way of determining when this has happened,
> just use the phone like ordinary for half a minute or so - normally it kills
> it after a short period.
> 2) The way to restart the app is via Apps > WindowFSTest (not via the task
> manager).
> 3) ***IMPORTANT*** the above two steps seem to occur only when you run it
> from a compiled APK, not directly from source/debug APK - so it's not as easy
> to debug since you cannot put line breaks in the Java file(s).
> Although not perfect, one way to fix this is to use:
> android:launchMode="singleTop"
> In AndroidManifest.xml - since it ensures the app is 'resumed' instead of
> restarted.
> I can provide a video upon request illustrating the issue.
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