Java tutorial
//package com.java2s; import android.content.Context; import android.content.SharedPreferences; import android.preference.PreferenceManager; public class Main { private static Context context; public static void clearAllPreferences() { SharedPreferences preferences; SharedPreferences.Editor editor; preferences = context.getSharedPreferences("longpoll", Context.MODE_MULTI_PROCESS); editor = preferences.edit(); editor.clear(); editor.commit(); preferences = context.getSharedPreferences("durov", Context.MODE_MULTI_PROCESS); editor = preferences.edit(); editor.clear(); editor.commit(); preferences = PreferenceManager.getDefaultSharedPreferences(context); editor = preferences.edit(); editor.clear(); editor.commit(); } }