Java tutorial
//package com.java2s; import android.util.Base64; import java.io.UnsupportedEncodingException; public class Main { public static String base64Encode(String strBase64, String code) throws UnsupportedEncodingException { String enToStr = Base64.encodeToString(strBase64.getBytes(), Base64.DEFAULT); // String string = new String(Base64.encode(strBase64.getBytes(code), Base64.DEFAULT)); return enToStr; } }