ios - compare content of UIButton Selected state -

i learning objective-c ios programming. making app has 2 round rect buttons , label. want compare values of content of buttons , output text label based on whether buttons match or not. have not been able figure out how compare content of buttons though. have model file , view controller i'll post below.

thanks can provide

this model.h file

//  matchtest.h #import <foundation/foundation.h>  @interface matchtest : nsobject  -(nsstring*)doesitmatch:(uibutton *)sender; -(nsstring*)doesitmatchgroup:(nsarray *)buttongroup;  @end 

this model.m file

//  matchtest.m #import "matchtest.h"  @implementation matchtest  -(nsstring*)doesitmatch:(uibutton *)sender {     nsstring* tempstring;      if(sender.isselected)     {         tempstring = @"selected";     }     else     {         tempstring = @"not selected";     }      return tempstring; }  -(nsstring*)doesitmatchgroup:(nsarray *)buttongroup {     nsstring* tempstring = @"buttons: match";;      for(int i=1;i<buttongroup.count;i++)     {         if(buttongroup[i-1] != buttongroup[i])         {             tempstring = @"buttons: not match";             nslog(@"%@",buttongroup[i]);         }      }      return tempstring; } @end 

this viewcontroller.h file

//  matchviewcontroller.h #import <uikit/uikit.h> #import "matchtest.h" @interface matchviewcontroller : uiviewcontroller @end 

this viewcontroller.m file

//  matchviewcontroller.m #import "matchviewcontroller.h"  @interface matchviewcontroller ()  @property (weak, nonatomic) iboutlet uilabel *matchlabel; @property (strong, nonatomic) matchtest *match; @property (strong, nonatomic) iboutletcollection(uibutton) nsarray *buttongroup;  @end  @implementation matchviewcontroller  -(matchtest *)match {     if(!_match) _match = [[matchtest alloc] init];     return _match; }  -(nsarray *)buttongroup {     if(!_buttongroup) _buttongroup = [[nsarray alloc] init];     return _buttongroup; }  - (ibaction)button:(uibutton *)sender {     sender.selected = !sender.isselected;     self.matchlabel.text = [self.match doesitmatchgroup:self.buttongroup]; }  @end 

assuming buttongroup array contains uibutton objects, code doesitmatchgroup needs updated compare titles of buttons. @ least believe intended goal. unclear mean "compare values of content of buttons".

assuming want see if button titles match this:

- (nsstring *)doesitmatchgroup:(nsarray *)buttongroup {     nsstring* tempstring = @"buttons: match";      (int = 1; < buttongroup.count; i++) {         uibutton *btn1 = buttongroup[i - 1];         uibutton *btn2 = buttongroup[i];         nsstring *title1 = [btn1 titleforstate:uicontrolstatenormal];         nsstring *title2 = [btn2 titleforstate:uicontrolstatenormal];         if (![title1 isequaltostring:title2]) {             tempstring = @"buttons: not match";             nslog(@"%@",buttongroup[i]);             break; // no need check more buttons         }     }      return tempstring; }