android 原生base64

Android有自己的base64类

import android.util.Base64

String str = "Hello!";  
//base64 加密 
//String strBase64 = new String(Base64.encode(str.getBytes(), Base64.DEFAULT));  
String strBase64 = Base64.encodeToString(str.getBytes(), Base64.DEFAULT);  
//base64 解密
String str2 = new String(Base64.decode(strBase64.getBytes(), Base64.DEFAULT));