Question

I’m trying to have 2 views in my app, using 2 buttons on my home screen. For each of these buttons I’ve created a new class and added the following code to my view controller:

ViewController.h :

#import <UIKit/UIKit.h>
@interface Gallerie2ViewController : UIViewController {
}
- (IBAction)switch2class1:(id)sender; // 1st button
- (IBAction)switch2class2:(id)sender; // 2nd one
@end

ViewController.m :

#import "ViewController.h"
#import "class1.h"
#import "class2.h"

@implementation ViewController

- (IBAction)switch2class1:(id)sender
{
    Class1 *Class1view = [[Class1 alloc] initWithNibName:nil bundle:nil];
    [self presentModalViewController:Class1view animated:YES];
}

- (IBAction)switch2class2:(id)sender
{
    Class2 *Class2View = [[Class2 alloc] initWithNibName:nil bundle:nil];
    [self presentModalViewController:Class2View animated:YES];
}

Class1.h/.m has the same content than Class2.h/.m , but when running my app, the 1st button works fine (opens the Class1 view) but the 2nd button crashes the app!

What am I doing wrong?

Answer 1

Allright, I’ve checked with the console (thanks Sam Jarman) and found the cause of this issue : one of my classes (Class2) was named List. So it compiled with List.h and List.m but List.h is already defined (probably part of the SDK). It didn’t make any error/warning of the conflict at compiling, but well.. i’ve renamed list.h to cat.h and it works fine now !

Thanks !