关于new String(new byte[]{0})

 1 Bundle bundle = data.getExtras();
 2 byte[] btyeAry = bundle.getString("result").getBytes();
 3 StringBuffer buffer = new StringBuffer();
 4 if(btyeAry != null && btyeAry.length > 0) {
 5    for(int i = 0,len = btyeAry.length; i < len; i ++) {
 6        byte b = btyeAry[i];
 7        if(b != 0) {
 8           buffer.append(new String(new byte[]{b}));
 9          }
10        }
11  }
12  mZxingCode = buffer.toString();