Java tutorial
//package com.java2s; import android.content.Context; import android.content.SharedPreferences; public class Main { public final static String XML_Settings = "settings"; private static SharedPreferences settings; public static void clearSave(Context context) { settings = context.getSharedPreferences(XML_Settings, 0); for (String name : settings.getAll().keySet()) { saveSharedPreString(context, name, ""); } } public static void saveSharedPreString(Context context, String key, String value) { settings = context.getSharedPreferences(XML_Settings, Context.MODE_PRIVATE); settings.edit().putString(key, value).commit(); } }