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EDIT: The problem described below was due to a very peculiar device issue not caused by any coding-related problem. I have a preferenceActivity in which I have many checkBoxPreferences. The checkBoxPreference is suppose to save the the default shared preferences file, and then be called again when I open the app in order to update the UI. This does not happen like it's suppose to. If I close the app and open it back up, my values remain like they are suppose to, but if I use task manager to end the app or if I power cycle the phone (when the app is not running) then the defaultValues are called again. So, I created a SharedPreference in my onResume() to test it. SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()); I then check to see if there is a key in that sharedpreference. pref.contains("myCheckBoxPreference"); When I close out and open it back up, it returns true. if I close with the task manager or power cycle the phone off and on, then that returns false. So, I tried manually setting the SharedPreference SharedPreferences.Editor editor = pref.edit(); editor.putBoolean("myCheckBoxPreference", myCheckBoxPreference.isChecked()); editor.commit(); and then I called that when the checkboxpreference value changed. I also tried calling it in onStop and onPause. Still, if I close the app and open it back up, pref.contains returns true, but if I power cycle the phone off and back on, it returns false. So I then tried using a SharedPreferences file. In the class declaration: public static final String PREFS = "prefs"; And in the onResume(): SharedPreferences pref = this.getSharedPreferences(PREFS, 0); Same behavior, pref.contains still returns true if I just close the app and open it

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