[android-developers] Re: Attempt to read preferences file without permission

My user seem to have had the same symptom.

He e-mailed me that he had to do a factory-reset to his phone due to
other reasons, he re-installed the app from the market (something that
didn't help before the reset), and now everything works as expected.

On Jan 27, 8:49 pm, klwinkel <klwin...@gmail.com> wrote:
> I have exactly the same problem with my own developed app, on my own
> standard non-rooted Samsung Galaxy S with android 2.2.1.
>
> this is my error message, when I do the Editor.commit():
>
> E/ApplicationContext(19228): Couldn't rename file /dbdata/databases/
> klwinkel.huiswerk/shared_prefs/klwinkel.huiswerk_preferences.xml to
> backup file /dbdata/databases/klwinkel.huiswerk/shared_prefs/
> klwinkel.huiswerk_preferences.xml.bak
>
> I did some investigation, with a "ps" and a "ls -l" on the xml prefs
> file, with the following result:
>
> ps:
>
> USER PID PPID VSIZE RSS WCHAN PC NAME
> app_17 19411 2366 223648 21104 ffffffff 00000000 S klwinkel.huiswerk
>
> ls -l -->
>
> -rw-rw---- app_107  app_107       292 2011-01-22 20:13
> klwinkel.huiswerk_preferences.xml
>
> So, this is the proof, that the uid of the prefs file(app_107) and the
> uid of the app(app_17) are different.
>
> The prefs file is from a few days ago, probably I was developing at
> that time, maybe I removed the app from the phone, I don''t remember.
>
> It possibly is a bug in the Samsung android 2.2.1, which does not
> always delete prefs file when de-installing an app.

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