I'm struggling with the problem with Bluetooth. I wrote an App that received data from ELM 327 Bluetooth Interface, and when I use Bluetooth Terminal App I received "clean" data like
127 00 00 00 00 00 00 0D
But when I'm using my app then I received something like this.
I don't know how to get rid of this question marks and what the heck is this? Also the message contains something like
{ When=0 what=0 obj=n}
Also how to get rid of this?
Bellow is my code and I will be very very great full for your help..
private class MyHandler extends Handler {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
Intent sendIntent = new Intent();
if (msg.what == handlerState) {
recDataString.append(msg);
Log.d("tablica", String.valueOf(recDataString));
int startOf = recDataString.indexOf("176");
int endOf = recDataString.indexOf("<");
if (recDataString.length() > 23) {
String stringMessage = String.valueOf(recDataString);
if (stringMessage.contains(" ")) {
stringMessage = stringMessage.replace(" ", "");
//Log.d("spacje", stringMessage);
int lengthOfString = stringMessage.length();
if(stringMessage.contains("176")) {
stringMessage = stringMessage.substring(startOf-3, startOf+17);
Log.d("spacje", stringMessage);
}
}
}
recDataString.delete(0, recDataString.length());
}
}
}
And this is run method
@Override
public void run() {
super.run();
byte[] mmBuffer = new byte[1024];
int mmBytes = 0;
int begin = 0;
while (true) {
try {
mmBytes += mmInStream.read(mmBuffer, mmBytes, mmBuffer.length - mmBytes);
for (int i = begin; i < mmBytes; i++) {
if ( mmBytes > 13 ) {
mmBuffer[i] += ">".getBytes()[0];
String wiadomosc = new String(mmBuffer);
Message msg = new Message();
msg.obj = wiadomosc;
h.sendMessage(msg);
if (i == mmBytes - 1) {
mmBytes = 0;
begin = 0;
}
mmBytes = 0;
}
}
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(getBaseContext(), "Input stream was disconnected", Toast.LENGTH_LONG).show();
break;
}
}
}
I'm struggling with this problem couple of days and I have no idea how to solve this. Also this methods are inside the Service. Thant you for your help
