Checking for escape character(0x1B,\033) while reading from socket

Question

Ok, so I'm designing an Android MUD client as part of my school project. I'm having an issue, however, while implementing ANSI color parsing. I read in the data on a byte-by-byte basis. I've tried setting the character "hex" as '\033', '27', and '0x1B' but I can never seem to get it to detect the escape character. Is there anything you guys can see wrong with my checking of it? Also, the line "char check = String.valueOf(j).charAt(0);" is temporary, I was originally trying to check the character variable "hex" against the byte "j". Is there possibly a better way of checking for the character?

                    while(isConnected) {

                    int j = 0;

                    try {
                            int i = arrayOfByte.length;
                            j = streamInput.read(arrayOfByte, 0, i);

                            char check = String.valueOf(j).charAt(0);

                            Log.d("Console","Char is - " + check);
                            if (j == -1)
                            {

                                Log.d("Console","j = -1");
                                throw new Exception("Error while reading socket.");
                            } else if (j == 0) {

                                Log.d("Console","Continuing");
                                continue;
                            }  else if (check == hex)  {
                                Log.d("Console","Yo, daddio!");
                            } else {

                                final String strData = new String(arrayOfByte, 0, j).replace("\r", "");


                                runOnUiThread(new Runnable() {
                                     public void run() {


                                         textContent.append(strData);
                                         scrollToBottom();

                                    }
                                });

                            }
                    } catch (Exception e) {

                        Handler handlerException = GameWindow.this.mHandler;
                        String strException = e.getMessage();
                        final String strMessage = "Error while receiving from server:\r\nConnection terminated";

                        Runnable rExceptionThread = new Runnable()
                        {
                            public void run()
                            {
                                Toast.makeText(context, strMessage, 3000).show();
                            }
                        };

                        handlerException.post(rExceptionThread);

                        if(strException.indexOf("reset") != -1 || strException.indexOf("rejected") != -1)
                        {
                            isConnected = false;
                            try 
                            {
                                connectionSocket.close();
                            }
                            catch (IOException e1) 
                            {
                                e1.printStackTrace();
                            }

                        }

                        isConnected = false;
                    }

                }   

Answer 1

Well, you're checking the number of bytes read instead of each individual byte.

j = streamInput.read(arrayOfByte, 0, i);

returns the number of bytes read and put in arrayOfByte those bytes.

Therefore you need to do the following:

for (int n=0; n < j; n++)
{
    if (arrayOfByte[n]  == hex) Log.d("Console", "Yo, daddio!");
}