Android Shared Preference Still visible after Deleting File -


i trying application using shared preference. when delete preference file data/data/com.your.package.name/shared_prefs/mysharedpref.xml manually using android monitor, still app able read preference values.

i assuming how value retained in main memory of phone. correct & viable solution clear shared preferences totally leaving no traces. 1 thing want clear preference if file wiped. for need check presence of file, other approach rather checking file class ?

i think code must work 

 public static void clearallpreference(context context){         sharedpreferences prefs = context.getsharedpreferences(pref_file, context.mode_private);         sharedpreferences.editor editor = prefs.edit();         editor.clear();         editor.commit();     }

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