base64url in java

Question

https://web.archive.org/web/20110422225659/https://en.wikipedia.org/wiki/Base64#URL_applications

talks about base64Url - Decode

---

a modified Base64 for U

Answer 1

In the Android SDK, there's a dedicated flag in the Base64 class: Base64.URL_SAFE, use it like so to decode to a String:

import android.util.Base64;
byte[] byteData = Base64.decode(body, Base64.URL_SAFE);
str = new String(byteData, "UTF-8");