iOS 7: Property not found on object of type

Question

I have been following Apple's Start Developing iOS Apps Today guide and have run into a problem. I'm not a newbie developer but I am new to iOS development and I can't see why I'm going wrong.

I have a file called STRAddTodoViewController.h which contains the following

#import <UIKit/UIKit.h>
#import "STRTodo.h"

@interface STRAddTodoViewController : UIViewController
@property STRTodo *todoItem;
@end

And in my STRTodosViewController.m I have:

- (IBAction)unwindToList:(UIStoryboardSegue *)segue {
    STRAddTodoViewController *addTodo = [segue sourceViewController];
    STRTodo *item = addTodo.todoItem;
    if (item != nil) {
        [self.todos addObject:item];
        [self.tableView reloadData];
    }
}

And I'm getting an error of:

Property 'todoItem' not found on object of type 'STRAddTodoViewController *'

For some reason, my public variable in STRAddTodoViewController isn't getting picked up in my other controller and I can't for the life of me figure out why. Any clues?

EDIT: Massive apologies everyone, seems like I had two copies of STRAddTodoViewController in my project and it was reading the old one when it was building. Such a simple mistake and I feel like a massive idiot now, but thanks to everyone who helped me out.

Nothing jumps at me right away. Just to make sure, you did `#import` the h file, right? — Léo Natan, Dec 15 '13 at 01:26
@LeoNatan Yep, STRTodosViewController.h has #import "STRAddTodoViewController.h" and #import "STRTodo.h" — Rik, Dec 15 '13 at 01:28
If you found a solution, please answer your question and accept it. — Léo Natan, Dec 15 '13 at 02:26

score 0 · Answer 1 · answered Dec 15 '13 at 01:44

0

Try to replace #import "STRTodo.h" by @class STRTodo; in your STRAddTodoViewController.h header file and add #import "STRTodo.h" in your STRAddTodoViewController.m implementation file.

Because if you already #import "STRTodo.h" and #import "STRAddTodoViewController.h" in your STRTodoViewController.h header file, compiler founds too much #import "STRTodo.h" and gets confused.

Does it helps ?

answered Dec 15 '13 at 01:44

iGranDav

2,450
1
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No luck unfortunately, I stripped back all the #import's to the bare minimum too and it still has the same error – Rik Dec 15 '13 at 01:51

score 0 · Answer 2 · answered Dec 15 '13 at 02:07

0

You have: @property STRTodo *todoItem; This means that STRTodo is indeed a class. Your property requires more identifiers. @property (nonatomic, strong) STRTodo *totoItem;

In addition to this, in your -(id) init method, you should also instantiate the property.

- (id) init{
    if (self = [super init]{
        self.todoItem = [[STRTodo alloc]init];
    }
    return self;
}

Hope this helps.

EDIT: Nevermind, it seems you have found your solution.

answered Dec 15 '13 at 02:07

erdekhayser

6,537
2
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The `nonatomic` and `strong` modifiers are not required. – Léo Natan Dec 15 '13 at 02:11
That would be good to know. I have wasted a lot of time typing then! – erdekhayser Dec 15 '13 at 02:15
Just remember that atomic properties (the default) are slower than nonatomic, so keep typing at least that. – Léo Natan Dec 15 '13 at 02:25
A post referencing that : http://stackoverflow.com/a/5024424/757485. So they are indeed not required here ;-) – iGranDav Dec 15 '13 at 02:50

iOS 7: Property not found on object of type

2 Answers2