max max - 6 months ago 63
Android Question

Base 64 encode and decode example code

Does anyone know how to decode and encode a string in Base64 using the Base64. I am using the following code, but it's not working.

String source = "password";
byte[] byteArray = source.getBytes("UTF-16");
Base64 bs = new Base64();
System.out.println( bs.encodeBytes(byteArray));



  • Choose an encoding (UTF-8 is generally a good choice)

Transmitting end:

  • Encode the string to bytes (e.g. text.getBytes(encodingName))
  • Encode the bytes to base64 using the Base64 class
  • Transmit the base64

Receiving end:

  • Receive the base64
  • Decode the base64 to bytes using the Base64 class
  • Decode the bytes to a string (e.g. new String(bytes, encodingName))

EDIT: So something like:

// Sending side
byte[] data = text.getBytes("UTF-8");
String base64 = Base64.encodeToString(data, Base64.DEFAULT);

// Receiving side
byte[] data = Base64.decode(base64, Base64.DEFAULT);
String text = new String(data, "UTF-8");