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?

Answer 1

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.