android String 类型转换成UTF-8格式

 1 public static String toUtf8(String str) {
 2         String result = null;
 3         try {
 4             result = new String(str.getBytes("UTF-8"), "UTF-8");
 5         } catch (UnsupportedEncodingException e) {
 6             // TODO Auto-generated catch block
 7             e.printStackTrace();
 8         }
 9         return result;
10     }