Java tutorial
//package com.java2s; import android.util.Base64; import java.io.UnsupportedEncodingException; public class Main { public static String getBase64(String str) { String result = ""; if (str != null) { try { result = new String(Base64.encode(str.getBytes("utf-8"), Base64.NO_WRAP), "utf-8"); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } } return result; } }