Java tutorial
//package com.java2s; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; public class Main { public static void alert(String title, String message, Activity activity) { alert(title, message, activity, null); } public static void alert(String title, String message, Activity activity, DialogInterface.OnClickListener listener) { AlertDialog.Builder builder = new AlertDialog.Builder(activity); builder.setTitle(title); builder.setMessage(message); builder.setPositiveButton("OK", listener); AlertDialog alert = builder.create(); alert.show(); } }