lib/src/main/java/com/anyun/exam/lib/util/ByteUtil.java
@@ -13,4 +13,19 @@ } return h.toString(); } public static String byte2hex(byte [] buffer, int length) { byte [] temp = new byte[length]; System.arraycopy(buffer, 0, temp, 0, length); return byte2hex(temp); } public static boolean allIsAscii(byte []buffer) { for (int i = 0; i < buffer.length; i++) { if (buffer[i] < 0x20 || buffer[i] >= 0x7F) { return false; } } return true; } }