ios - Call a function from a view

Question

I'm trying to create a method that I can call from different viewControllers.

I have a class called Info.h/Info.m and in this I have a method: -

-(void) testFunc {
 ... Do something here
}

I then want to call this function in my ViewController. I tried the following but I can't get the testFunc to run.

#import "ViewController.h"
#import "Info.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    Info *targetsInstance = [[Info alloc] init];
    [targetInstance testFunc];

}

@end

When I type [targetInstance testFunc] I get the error "No visible @interface for 'Info' declares the selector 'testFunc'"

Answer 1

In your Info.h file, you must declare -(void) testFunc as a method in the @interface section

@interface Info: UIViewController {
}

-(void) testFunc;

@end