Question

In my main view controller, I have a button that calls a popover. Since the popover has it’s own view controller, its buttons call methods in the popover’s view controller. But how would I call a method from the main view controller?

I tried this. In the popover view controller I added a property in the .h

@class ViewController;

@interface PopoverContent : UIViewController <UITextFieldDelegate>
...
@property (strong, nonatomic) ViewController *parentView;

In my popover implementation I did this in viewDidLoad:

self.parentView = [[ViewController alloc] initWithNibName:nil bundle:nil];

In ViewController I have a method called generateHash so I tried

[parentView generateHash];

But I get the error:

No visible @interface for 'ViewController' declares selector 'generateHash'

Any idea what I’m doing wrong? Thanks

Answer 1

remove this line, don’t want to create a new instance of view controller

self.parentView = [[ViewController alloc] initWithNibName:nil bundle:nil];

change this line

@property (strong, nonatomic) ViewController *parentView;

to this, so your parent view pointer is of the right class type

@property (weak) ParentView *parentView;

now inside parent views .m file

- (void) createPopup
{
    PopoverView *popoverV = [[PopoverView alloc] init];
    popoverV.parentView = self;

    //And some command to show your popup, addSubview, or presentModal, or whatever
}

Then in PopoverView.m file, you can call methods of the parentView like so

[self.parentView SomeMethod];