ios - Adding contents of a label to contents of a button -

i have array questionhalf , next button invokes method nextquestionbutton cycles through items in questionhalf array , displays next string in label questionlabel

questionhalf = @[@"atlanta", @"detroit", @"houston", @"green bay", @"san francisco"]; 

which can cycled through using next button:

 - (ibaction)nextquestionbutton:(id)sender;     - (ibaction)nextquestionbutton:(id)sender     {         if (currentquestionindex < [questionhalf count] -1)             currentquestionindex ++;         else currentquestionindex = 0;         _questionlabel.text = questionhalf [currentquestionindex];     } 

which displayed in label

@property (weak, nonatomic) iboutlet uilabel *questionlabel; 

i add 5 more buttons let users pick strings complete american football teams name.

when user picks need see if combined string valid team name.

i have array correctfullanswer contains valid full teams names , need test if users answer matches 1 of answers in string.

correctfullanswer = @[@"atlanta falcons", @"detroit lions", @"houston texans", @"green bay packers", @"san francisco 49'ers"];   

i have added first of 5 required buttons

- (ibaction)packersanswerbutton:(id)sender;     - (ibaction)packersanswerbutton:(id)sender     {         nsstring* selectedteamname = [nsstring stringwithformat:@"%@ %@", questionhalf [currentquestionindex], answerhalf];         if ([correctfullanswer indexofobject:selectedteamname] != nsnotfound)         {             [uiview animatewithduration:0.5 animations:^{                 [packersanswerbutton.alpha setalpha:1];             }         ];}          } 

however getting error of undeclared identifier 'packersanswerbutton' when attempt button hide once correct answer has been selected.

just add 5 buttons view want add buttons. process similar following:

-(void)viewdidload {     //i'm assuming containerview view going add buttons     nsarray* teamnamesuffices = @[@"falcons", @"lions", @"texans", @"packers", @"49'ers"];     int = 0;     for(nsstring* suffix in teamnamesuffices) {         uibutton* btn = [uibutton buttonwithtype:uibuttontyperoundedrect];         btn.frame = cgrectmake(<%# required frame coordinates #>);         btn.titlelabel.text = suffix;         btn.tag = i;         [btn addtarget:self action:@selector(suffixselected:) forcontrolevents:uicontroleventtouchupinside];         [containerview addsubview:btn];         i++;     } }  -(void)suffixselected:(uibutton*)sender {     //here retrieve suffix text , compare if valid team name     nsstring* suffix = sender.titlelabel.text;     nsstring* selectedteamname = [nsstring stringwithformat:@"%@ %@",questionhalf [currentquestionindex]/* or _questionlabel.text, whichever accessible */,suffix];     if([correctfullanswer indexofobject:selectedteamname] != nsnotfound) { //a valid team name constructed         [[[[uialertview alloc] initwithtitle:@"congratulations!" message:@"bingo!" delegate:nil cancelbuttontitle:@"ok" otherbuttontitles:nil] autorelease] show];         //or whatever required     } } 

optionally can create suffix buttons designer(storyboard/xib), set titles accordingly , set targets suffixselected: method right their. in case need declare method (ibaction) rather (void).

please let me know if need explore else.