Java tutorial
//package com.java2s; /* * Hewlett-Packard Company * All rights reserved. * * This file, its contents, concepts, methods, behavior, and operation * (collectively the "Software") are protected by trade secret, patent, * and copyright laws. The use of the Software is governed by a license * agreement. Disclosure of the Software to third parties, in any form, * in whole or in part, is expressly prohibited except as authorized by * the license agreement. */ import android.app.Activity; import android.content.SharedPreferences; import android.preference.PreferenceManager; public class Main { public static int getNextEventCounter(Activity hostActivity, String key) { SharedPreferences preferences = PreferenceManager .getDefaultSharedPreferences(hostActivity.getApplicationContext()); int id = preferences.getInt(key, 0); id += 1; SharedPreferences.Editor editor = preferences.edit(); editor.putInt(key, id).commit(); return id; } }