Adding a Stepper

Question

Hi I am trying to add a stepper to my app but got this error:

ViewController.h:

@interface ViewController : UIViewController {    
      IBOutlet UILabel *NrOfQuestLabel;}
-(IBAction)NrofQuestChange:(UIStepper *)sender;

ViewController.m:

-(IBAction)NrofQuestChange:(UIStepper *)sender:{ double value = [sender value];
[NrOfQuestLabel setText: [NSString stringWithFormat:@"%d", (int)value]];
 }

Error in .m: !Expected identifier !"sender" used as the name of the previous parameter rather than as part of the selector

Any help?

Xcode is just the IDE and this question is about a syntax error in Objective-C code so the "objective-c" tag is better. It looks like you're missing a closing brace `}` in the .h file after the declaration of `NrOfQuestLabel`. — , Apr 07 '14 at 13:01
@Anna, sorry it was there I missed when copy/past... the error is in the .M file :( — Manolo, Apr 07 '14 at 13:57
`(IBAction)NrofQuestChange:(UIStepper *)sender:` to `-(IBAction)NrofQuestChange:(UIStepper *)sender` — Larme, Apr 07 '14 at 13:58
http://stackoverflow.com/questions/7779443/how-to-use-uistepper?rq=1 — DogCoffee, Apr 07 '14 at 14:05

katzenhut · Accepted Answer · 2014-05-25T00:23:40.747

Unless its another typo, you have an extra colon in xour code right after sender:

-(IBAction)NrofQuestChange:(UIStepper *)sender:{ 
    double value = [sender value];
    [NrOfQuestLabel setText: [NSString stringWithFormat:@"%d", (int)value]];
 }

should be

-(IBAction)NrofQuestChange:(UIStepper *)sender{
    double value = [sender value];
    [NrOfQuestLabel setText: [NSString stringWithFormat:@"%d", (int)value]];
 }

Thats why the compiler can't decide whether sender is a variable or part of the method name.

Adding a Stepper

1 Answers1