java - android.os.NetworkOnMainThreadException how to adapt this code that it runs in a seperate thread -

i'm developing software pc , mobile talking server. when run code java desktop app gives me following error android.os.networkonmainthreadexception

i tried implement class thread think did not right. still gives me error

i glad support.

the class serveraccessmobile doing networking , has 2 public methods, 1 getting data server , 1 setting data on server

and how want execute activity / service

serveraccessmobile serveraccessmobile = new serveraccessmobile(); arraylist <string> datafromserver = **serveraccessmobile.getdatafromserver()**;  arraylist <string> datatosend = .....  **serveraccessmobile.setdataoserver(datatosend)**; 

this code class serveraccessmobile

public class serveraccessmobile {      // private variables     private objectoutputstream outputstream;      private objectinputstream inputstream;      ...      // constructor     public serveraccessmobile(string arg1)     {         ...     }       **private arraylist<string> run(arraylist<string> messagetosendlist)**     {         arraylist <string> receivedmessagelist = new arraylist <string> ();          try // connect server, streams, process connection         {             connecttoserver(); // create socket make connection              getstreams(); // input , output streams              senddata(messagetosendlist);              receivedmessagelist = processconnection();         }         catch ( eofexception eofexception )         {             system.out.println("\n terminated connection");         }          catch ( ioexception ioexception )         {             ioexception.printstacktrace();         }                  {             closeconnection(); // close connection         }           return receivedmessagelist;     }       public arraylist <string > getdatafromserver(){          arraylist< string > commandmessage = new  arraylist< string > ();         commandmessage.add("getdata");          arraylist< string > receivedmessagelist = new  arraylist< string > ();          // start server communication         receivedmessagelist = **run(commandmessage);**     }      public void setdataonserver(arraylist <string> messagetosendlist){          // start server communication         **run(messagetosendlist);**     } } 

now question,

the code within run() method should run in seperate thread, not ui thread how implement correct?

thank u

you can find detailed description threads @ following link: http://developer.android.com/guide/components/processes-and-threads.html#threads

you this

new thread(new runnable() {     public void run() {         serveraccessmobile serveraccessmobile = new serveraccessmobile();       arraylist <string> datafromserver = **serveraccessmobile.getdatafromserver()**;      arraylist <string> datatosend = .....      serveraccessmobile.setdataoserver(datatosend);     } }).start(); 

if want update ui thread you'd have call view.post(runnable) method.