java - How to use Connected Thread in multiple activites -

i newbie in android. first i've written application connects device via bluetooth, sends , receives data, using socket , connected thread. while using 1 activity works great, receive data using handler. started make application multiple activities, made special class socket connection , connected thread. send data activity, don't know how receive answer (how make handler in many activities, or alternative use). possibly me , write lines of code, should add.

thanks.

here thread:

private class connectedthread extends thread {     private final bluetoothsocket mmsocket;     private final inputstream mminstream;     private final outputstream mmoutstream;      public connectedthread(bluetoothsocket socket) {           mmsocket = socket;           inputstream tmpin = null;           outputstream tmpout = null;            try {             tmpin = socket.getinputstream();             tmpout = socket.getoutputstream();           }           catch (ioexception e) {}              mminstream = tmpin;             mmoutstream = tmpout;           }           public void run() {             byte[] buffer = new byte[256];             int bytes;             while(true) {               try {                 bytes = mminstream.read(buffer);                  byte[] readbuf = (byte[]) buffer;                 string strincom = new string(readbuf, 0, bytes);                    // here need method send data activity               }               catch (ioexception e) {                   break;                 }               }             }                public void write(string message) {              byte[] msgbuffer = message.getbytes();                 try {                     mmoutstream.write(msgbuffer);                 } catch (ioexception e) {                    }            } 

}

well, 1 thing can use of interface,

for example:

public class connectedthread extends thread { // declare interface in class body     public static interface callbacklistener     {         public void onreceived(string msg);     }     private final bluetoothsocket mmsocket;    private final inputstream mminstream;    private final outputstream mmoutstream;    private callbacklistener listener = null;  // then, want use class must implement  // interface    public connectedthread(bluetoothsocket socket, callbacklistener alistener)     {                  this.listener = alistener;          ...  

and in run method of thread this:

// here need method send data activity if (listener != null) {    listener.onreceived(strincom); } 

and when create class, this:

bluetoothsocket socket = null; /* * create bluetoothsocket here    bluetoothsocket socket = new bluetoothsocket(...); */  connectedthread conthread = new connectedthread(socket, new connectedthread.callbacklistener() {    @override    public void onreceived(string msg)    {     // here you'll receive string msg     // keep in mind receive call      // in connectedthread's context, not ui thread    } });