Re: [android-developers] Re: Android shared preferences assignments not persisting between emulator sessions

Robert,

Do you start the emulator with "Wipe data" option, by any chance?

If you are, that explains it, as wiping the data means.... well, wiping
the data.

The preferences are stored in the file system of the emulated Android
device, just like on a real phone, not directly within the host
computer's file system.

You can find the files under:

/data/data/<your package name>/shared_prefs

-- Kostya

23.04.2011 10:02, Zsolt Vasvari пишет:
> No idea about the MODE_PRIVATE stuff, but I use
> PreferenceManager.getDefaultSharedPreferences() and it works fiine.
> Why do you need to control the file name?
>
> On Apr 23, 12:15 pm, roschler<robert.osch...@gmail.com> wrote:
>> I am using the following code to save data to my Android application's
>> shared preferences:
>>
>> private SharedPreferences getOurSharedPreferences() {
>> return getSharedPreferences(SHARED_PREFS_FILENAME,
>> MODE_PRIVATE);
>> }
>>
>> SharedPreferences sharedPrefs = getOurSharedPreferences();
>> SharedPreferences.Editor editor = sharedPrefs.edit();
>> editor.putString(keyName, theString);
>> if (!editor.commit())
>> throw new RuntimeException("Unable to save new string.");
>>
>> // Get it back as a test.
>> String s2 = getStringFromStorage(keyName);
>>
>> Where SHARED_PREFS_FILENAME is a private final static string and
>> keyName is the name of whatever key I'm currently using as a field
>> name. The commit works fine, I don't get an exception. As you can see
>> I added a test that retrieves the recently committed string and when I
>> check it (s2) the value is fine. So I am not having any problems with
>> shared preferences storage during the lifetime of my app. However,
>> when I relaunch the application in the emulator the shared preferences
>> storage area is empty and I can't find the values I stored in the last
>> emulator session. I did some reading and as far as I can see the
>> stored values should persist across sessions, apparently they are
>> saved in an XML file belonging to the emulator. Yet I am having
>> problems.
>>
>> Can anyone tell me why my shared preferences storage values are not
>> persisting between Android emulator sessions?
>>
>> -- roshcler

--
Kostya Vasilyev -- http://kmansoft.wordpress.com

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