java - How to check if socket is connected or not using background thread -

i developing application in checking availability of port before reading , writing on socket. using following code check status

private boolean isavailable(string host, int port) {         try {             socket socket = new socket();             socket.connect(new inetsocketaddress(host, port), 1000);             isportavailable = socket.isconnected();         } catch (ioexception e) {             isportavailable = false;         }         return isportavailable;     } 

after checking status on onclick()

if (isavailable(ip, integer.parseint(portlvr))) {     startactivity(new intent(getapplicationcontext(),activitylivingroom.class)); } else     toast.maketext(getapplicationcontext(),"connection error !", toast.length_short).show(); 

but problem if check status on main thread android give me networkonmainthradexception how manage operation using background thread?

try this

 private class socketchecktask extends asynctask<string , integer , boolean> {        string classname="";      public socketchecktask (string classname) {               this.classname=classname;     }  @override protected boolean doinbackground(string... params) {     return isavailable(params[0], integer.parseint(params[1]);   }  @override protected void onpostexecute(boolean isavailable) {    if (isavailable)) {      class c=class.forname("yourpackage"+classname); startactivity(new intent(getapplicationcontext(),c));      } else toast.maketext(getapplicationcontext(),"connection error !", toast.length_short).show();      } } 

and send this

 socketchecktask task=new socketchecktask ("activitylivingroom"); task.execute(ipadress,port);