Android shared preferences assignments not persisting between emulator sessions

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 persist开发者_开发问答ing between Android emulator sessions?

-- roshcler

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On the Target tab of the debug configuration Dialog window, do you have "Wipe User Data" ticked?

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I had a similar problem. Try uninstalling the app and reinstall. Things can get corrupt in your shared preference files as you develop.

After I reinstalled my issues went away and I could see my persisted values across app lifecycles.