android - How to show Status of Check Box in TextView while using AlertDialog -

how status of checkbox in textview while using alertdialog.

still trying show checked status of checkbox not getting value neither true nor false.

please see below screenshot,

uploadactivity.java code:

textview tv1; checkbox chkios;     @override     public dialog oncreatedialog(int id) {          alertdialog dialogdetails = null;         switch (id) {         case dialog_login:             layoutinflater inflater = layoutinflater.from(this);             view dialogview = inflater.inflate(r.layout.dialog_layout, null);             alertdialog.builder dialogbuilder = new alertdialog.builder(this);             dialogbuilder.settitle("image information");             dialogbuilder.setview(dialogview);             dialogdetails = dialogbuilder.create();                              break;           }         return dialogdetails;     }      @override     public void onpreparedialog(int id, dialog dialog) {         switch (id) {         case dialog_login:         final alertdialog alertdialog = (alertdialog) dialog;             button loginbutton = (button) alertdialog                     .findviewbyid(r.id.btn_login);             button cancelbutton = (button) alertdialog                     .findviewbyid(r.id.btn_cancel);             tv1 = (textview) alertdialog                     .findviewbyid(r.id.textview1);             chkios = (checkbox) alertdialog                     .findviewbyid(r.id.chkoption1);               loginbutton.setonclicklistener(new view.onclicklistener() {                 @override                     public void onclick(view v) {                     savedata();                      addlisteneronbutton();                 }                                 private boolean savedata() {                                              .............                                    }                     return true;                 }                  private string gethttppost(string url,                         list<namevaluepair> params) {                      .............                     }                     return str.tostring();                 }              });              cancelbutton.setonclicklistener(new view.onclicklistener() {                 @override                                        public void onclick(view v) {                                             ...........                 }             });                   }     }  public void addlisteneronbutton() {                      chkios.setonclicklistener(new onclicklistener() {      @override      public void onclick(view v) {          if (((checkbox) v).ischecked())              tv1.settext("true");                 else             tv1.settext("false");                 }             });         } 

chekbox.setoncheckedchangelistener(new compoundbutton.oncheckedchangelistener() {              @override             public void oncheckedchanged(compoundbutton buttonview, boolean ischecked) {                 // todo auto-generated method stub                 if(ischecked==true){                     status.settext("true");                      }                 }else if(ischecked==false){                     status.settext("false");                 }             }         }); 

edit below line

chkios = (checkbox) alertdialog.findviewbyid(r.id.chkoption1); 

use code remove

addlisteneronbutton() 

this function it'll work sure. thanks.