android - How to get OnCheckedChangeListener in RadioGroup -


radiogroup provide method set oncheckedchangelistener, not get. module have oncheckedchangelistener of radiogroup , wrap in listener provide tracking of behavior customer(library application). how can listener without asking user of library provide explicitly?

p.s.

i've found solution reflection.

  private void trackradiogroup(radiogroup radiogroup){     radiogroup.oncheckedchangelistener listener = null;     try {         field field = radiogroup.getclass().getdeclaredfield("moncheckedchangelistener");         field.setaccessible(true);         object value = field.get(radiogroup);         if(value !=null){             listener = (radiogroup.oncheckedchangelistener)value;         }     } catch (nosuchfieldexception e) {         e.printstacktrace();     } catch (illegalaccessexception e) {         e.printstacktrace();     }     radiogroup.setoncheckedchangelistener(new somecompositelistener(listener)); }

thanks understanding , rates...

try this

radiogroup radiogroup = (radiogroup)findviewbyid(r.id.cancle_booking_radio_group);  radiogroup.setoncheckedchangelistener(new radiogroup.oncheckedchangelistener() {          @override         public void oncheckedchanged(radiogroup group, int checkedid) {              view radiobutton = radiogroup.findviewbyid(checkedid);             int index = radiogroup.indexofchild(radiobutton);             switch (index) {                 case 0:                     // perform action here                     break;                 case 1:                     // perform action here                     break;                 case 2:                     // perform action here                     break;                 case 3:                    // perform action here                     break;                 case 4:                     // perform action here                     break;             }         }     });

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