Java tutorial
//package com.java2s; import java.io.File; import java.io.FileInputStream; import android.util.Base64; public class Main { public static String encodeBase64File(String path) throws Exception { File file = new File(path); FileInputStream inputFile = new FileInputStream(file); byte[] buffer = new byte[(int) file.length()]; inputFile.read(buffer); inputFile.close(); return android.util.Base64.encodeToString(buffer, Base64.DEFAULT); } }