java - Android saving state of checkbox if exit app -

i have 5 checkboxs , when clicked set boolean in abstract class true or false using oncheckedchangelistener. example:

checkbox.setoncheckedchangelistener(new oncheckedchangelistener(){              @override             public void oncheckedchanged(compoundbutton buttonview,boolean ischecked)              {                 if(ischecked)                 {                     checkboxdata.checked = true;                 }                 else if(!ischecked)                 {                     checkboxdata.checked = false;                 }              }          }); 

however when leave app , return checkboxes not clicked anymore, yet boolean values still true. how can make app remember check boxes clicked.? should check boolean values in main activity oncreate , set checkboxs checked or not or there better/faster way make app remember checkboxs states?

just added in main activities oncreate method:

      if(checkboxdata.checked)     {         checkbox checkbox = (checkbox) findviewbyid(r.id.checkbox);         checkbox.setchecked(true);     } 

but nothing

when activity destroyed check checkbox state if true , , add checkbox state in shared preference

     @override     public void ondestroy() {      if(checkboxdata.checked){      sharedpreferences prefs = getsharedpreferences("private preference", context.mode_private);             prefs.edit()                 .putboolean("checkboxdata",true)                 .commit();    }     super. ondestroy();     } 

and when activity launched back, in oncreate check checkbox state in preference , if true enable checkbox

  sharedpreferences prefs = getsharedpreferences("private preference", context.mode_private);    boolean ischecked = prefs.getboolean("checkboxdata",false);   if(ischecked)   checkboxview.setchecked(true)