java - UI not updated from onProgressUpdate -


i writing following code:

    protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_test);         start();     }     public void start()     {         scrollview device= (scrollview) findviewbyid(r.id.test);         device.removeallviews();         tablelayout devicetable = new tablelayout(getapplicationcontext());         devicetable.setid(951357);         device.addview(devicetable);          devicelist = new arraylist<deviceinformation>();          wifimanager wifi = (wifimanager)getsystemservice( context.wifi_service );         if(wifi != null)         {             wifimanager.multicastlock lock = wifi.createmulticastlock("wifidevices");             lock.acquire();         }         wifiinfo winfo = wifi.getconnectioninfo();         mac = winfo.getmacaddress();         sendmulticastflyport = new thread(new flyportsender(mac));         sendmulticastflyport.start();         sendmulticastcomputer = new thread(new computersender(mac));         sendmulticastcomputer.start();         sendmulticastraspberrypi = new thread(new raspberrysender(mac));         sendmulticastraspberrypi.start();         new devicesearcher().execute();     }     private class devicesearcher extends asynctask<void, deviceinformation ,void>     {         @override         protected void onpreexecute()         {             super.onpreexecute();             tablelayout devicetable = (tablelayout) findviewbyid(951357);             tablerow tr = new tablerow(getapplicationcontext());             layoutparams layout = new layoutparams(layoutparams.match_parent, layoutparams.wrap_content);             tr.setlayoutparams(layout);             textview tv = new textview(getapplicationcontext());             tv.settext("searching");             tv.settextcolor(color.black);             tv.setvisibility(1);             tr.addview(tv);             devicetable.addview(tr);          }         @override         protected void doinbackground(void... arg0)         {             publishprogress((deviceinformation)null);             new thread()             {                 public void run()                 {                     multicastsocket socketcomputer=null;                     try                     {                         socketcomputer = new multicastsocket(wificonstants.computer_recv_port);                         socketcomputer.joingroup(inetaddress.getbyname(wificonstants.computer_network_addr));                         socketcomputer.setsotimeout(1*20*1000);                         byte[] inbufcomputer = new byte[1024];                         datagrampacket inpacketcomputer = new datagrampacket(inbufcomputer, inbufcomputer.length);                          while(true)                         {                             system.out.println("listening...");                             socketcomputer.receive(inpacketcomputer);                             system.out.println("received");                             string msg = new string(inbufcomputer, 0, inpacketcomputer.getlength());                             deviceinformation device = new deviceinformation(1, msg, inpacketcomputer.getaddress().tostring());                              publishprogress(device);                              log.v("received:","received computer :" + inpacketcomputer.getaddress() + " msg : " + msg);                             //system.out.write(inpacket.getdata(),0,inpacket.getlength());                             system.out.println();                             thread.sleep(2000);                         }                     }                     catch(exception e)                     {                         log.v("exception:","during receiving computer: "+e.tostring());                         publishprogress((deviceinformation)null);                     }                                         {                         socketcomputer.close();                     }                 }             }.start();              new thread()             {                 public void run()                 {                     multicastsocket socketraspberry=null;                     try                     {                         socketraspberry = new multicastsocket(wificonstants.raspberry_recv_port);                         socketraspberry.joingroup(inetaddress.getbyname(wificonstants.raspberry_network_addr));                         socketraspberry.setsotimeout(1*20*1000);                         byte[] inbufraspberry = new byte[1024];                         datagrampacket inpacketraspberry = new datagrampacket(inbufraspberry, inbufraspberry.length);                          while(true)                         {                             system.out.println("listening...");                             socketraspberry.receive(inpacketraspberry);                             system.out.println("received");                             string msg = new string(inbufraspberry, 0, inpacketraspberry.getlength());                             deviceinformation device = new deviceinformation(2, msg, inpacketraspberry.getaddress().tostring());                              publishprogress(device);                              log.v("received:","received raspberry :" + inpacketraspberry.getaddress() + " msg : " + msg);                             //system.out.write(inpacket.getdata(),0,inpacket.getlength());                             system.out.println();                             thread.sleep(1500);                         }                     }                     catch(exception e)                     {                         log.v("exception:","during receiving raspberry: "+e.tostring());                         publishprogress((deviceinformation)null);                     }                                         {                         socketraspberry.close();                     }                 }             }.start();         }      @override     protected void onprogressupdate(deviceinformation... d)     {         super.onprogressupdate(d[0]);         layoutparams layout = new layoutparams(layoutparams.match_parent, layoutparams.wrap_content);         tablelayout devicetable = (tablelayout) findviewbyid(951357);          if(check==false)         {             check=true;             log.v("enter","removing views");             system.out.println(devicetable);             //devicetable.removeallviews();         }         deviceinformation device = d[0];         if(device!=null)         {             devicelist.add(device);             tablerow tr = new tablerow(getapplicationcontext());             checkbox check = new checkbox(getapplicationcontext());             check.settext(device.getdevicetypestring()+"\n"+device.getipaddress());             check.setvisibility(1);             check.setid(14569+rowcounter);             check.settextcolor(color.white);             if(rowcounter%2==0)             {                 tr.setbackgroundcolor(color.dkgray);             }             else             {                 tr.setbackgroundcolor(color.gray);             }             check.setpadding(70, 0, 0, 0);              check.setonclicklistener(new onclicklistener()             {                 @override                 public void onclick(view view)                 {                     checkbox checksee = (checkbox) findviewbyid(view.getid());                 }             });              switch(device.getdevicetype())             {             case 1:                 check.setbuttondrawable(r.drawable.pcx);                 break;             case 2:                 check.setbuttondrawable(r.drawable.raspberryx);                 break;             case 3:                 check.setbuttondrawable(r.drawable.flyportx);                 break;             }             check.setenabled(true);             check.setchecked(false);             check.setlayoutparams(layout);             tr.addview(check);             tr.setlayoutparams(layout);             tr.setvisibility(1);             devicetable.addview(tr);             rowcounter++;         }         else         {             if(deviceendcounter==3)             {                 tablerow tr = new tablerow(getapplicationcontext());                 textview tv = new textview(getapplicationcontext());                 tv.settext("no devices found");                 tv.setvisibility(1);                 tv.setlayoutparams(layout);                 tv.settextcolor(color.white);                 tr.setbackgroundcolor(color.black);                 tr.setvisibility(1);                 tr.setlayoutparams(layout);                 tr.addview(tv);                 system.out.println(devicetable);                 devicetable.addview(tr);             }             else             {                 deviceendcounter++;             }         }     } }

the above code reaches onprogressupdate method. , access ui views not make change ui.

but if want remove view being removed. not adding view.

i dont know do.? have tried every possible ways.

edit:

i tried print ui tablelayout using system.out.println();

05-13 11:33:04.936: v/exception:(16280): during receiving computer: java.net.sockettimeoutexception 05-13 11:33:04.946: v/exception:(16280): during receiving raspberry: java.net.sockettimeoutexception 05-13 11:33:04.946: i/system.out(16280): android.widget.tablelayout@40dc32a8 05-13 11:33:04.956: v/exception:(16280): during receiving flyport: java.net.sockettimeoutexception 05-13 11:33:04.976: v/exception:(16280): during receiving computer: java.net.sockettimeoutexception 05-13 11:33:04.976: v/exception:(16280): during receiving raspberry: java.net.sockettimeoutexception 05-13 11:33:04.986: v/exception:(16280): during receiving flyport: java.net.sockettimeoutexception 05-13 11:33:05.016: i/system.out(16280): android.widget.tablelayout@40dc32a8

this logcat.

apart this, 3 threads running dont know how getting timeoutexception more once per thread.

in above, using

   layoutparams layout = new layoutparams(layoutparams.match_parent, layoutparams.wrap_content);    textview tv = new textview(getapplicationcontext());    tv.setlayoutparams(layout);

whereas should not contain:

   tv.setlayoutparams(layout);

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