[android-developers] Re: Will data remain after updating android os in mobile phones

Hi Guys,

Is android will wipe the preference variables data when the
application version is upgraded??

On Jun 25, 3:44 pm, santha <uday.pic...@gmail.com> wrote:
> Thanks for the information.....
>
> But in my application i want to backup the data when clicks on Factory
> Reset.. for that purpose i browse in the internet and came to know
> that android-2.2 provides Android Backup service.. But i dont know how
> much it is safe??
>
> could any one has tried this??
> On Jun 25, 11:54 am, FrankG <frankgru...@googlemail.com> wrote:
>
> > In my experience the manufacturer has in his "update" software the
> > whole
> > control whether he wants to delete  only user data, or everything
> > before he update the device.
>
> > But IMHO to avoid any trouble during the update, they prefer to delete
> > everything.
>
> > I.E. they could run into trouble with already set persistent system
> > variables or already
> > existing Shared Preferences  and other dangling things like sysfs
> > entries and so on.
>
> > And I could also imagine that they want to force the user to make his
> > system settings again (
> > Language, Time , Emails clients, Home Screen and so on ..)
>
> > Best regards !
>
> >    Frank
>
> >   Frank
>
> > On 25 Jun., 06:18, Indicator Veritatis <mej1...@yahoo.com> wrote:
>
> > > Right. And with very rare exception (mentioned earlier in this
> > > thread), and unfortunate exception at that, an OS upgrade from the
> > > phone manufacturer will not wipe everything. Certainly not for
> > > Android. But one should expect a factory reset to wipe all user data:
> > > that is why it is called "factory reset": it resets the state of the
> > > phone to what it was when it left the factory.
>
> > > Of course, you know this, Mark. I added it only for the benefit of
> > > others who might not.
>
> > > On Jun 24, 12:11 pm, Mark Murphy <mmur...@commonsware.com> wrote:
>
> > > > On Thu, Jun 24, 2010 at 6:47 AM, Jon Wikman <jon.wik...@gmail.com> wrote:
> > > > > I lost all apps and data when I did a factory reset of my Android
> > > > > phone (X10 Mini).
>
> > > > A factory reset is supposed to wipe everything. An OS upgrade is not.
>
> > > > --
> > > > Mark Murphy (a Commons Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy
>
> > > > Android App Developer Books:http://commonsware.com/books-ZitiertenText ausblenden -
>
> > > - Zitierten Text anzeigen -

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