Copying one NSString into other one Xcode - ios

Question

I have a problem in Xcode.I am trying to copy one NSString into other one but is not working.
The original NSString pageTitle is on the RestViewController:
This is my RestViewContoller.h:
#import <UIKit/UIKit.h>
#import "Restaurant.h"
#interface RestViewController : UIViewController
#property (strong, nonatomic) IBOutlet UILabel *TitleLabel;
#property (strong, nonatomic) IBOutlet UILabel *DescriptionLabel;
#property (strong, nonatomic) IBOutlet UIImageView *ImageView;
#property (nonatomic, strong) Restaurant *DetailModal;
#property (nonatomic, strong) NSString *pageTitle;
#property (nonatomic, strong) NSString *pageDescription;
#end
The NSString I want to save the data is on the RestViewController:
#property (nonatomic, strong) Restaurant *DetailModal;
but is a Restaurant class type.
My Restaurant class is:
Restaurant.h:
#import <Foundation/Foundation.h>
#interface Restaurant : NSObject
#property (nonatomic, copy) NSString *title;
#property (nonatomic, copy) NSString *desc;
#property (nonatomic, copy) NSString *image;
- (instancetype)init:(NSString *)title descripiton:(NSString *)description image:(NSString *)image;
#end
Restaurant.m:
#import "Restaurant.h"
#implementation Restaurant
- (instancetype)init:(NSString *)title descripiton:(NSString *)description image:(NSString *)image {
self = [super init];
if (self != nil) {
self.title = title;
self.desc = description;
self.image = image;
}
return self;
}
#end
And finally the place where I want to copy this NSStrings is my RestViewController.m:
#import "RestViewController.h"
#import <QuartzCore/QuartzCore.h>
#interface RestViewController ()
#end
#implementation RestViewController
- (void)viewDidLoad {
[super viewDidLoad];
_pageTitle = #"Test";
_DetailModal.title = _pageTitle;
NSLog(#"_DetailModal.title: %#", _DetailModal.title);
}
#end
The problem is when I see the result of the
NSLog(#"_DetailModal.title: %#", _DetailModal.title);on the console,
it puts me:2016-11-21 11:42:05.407 MadEat[3667:104028]
_DetailModal.title: (null)
What can I do? I know I have a low level of Xcode, but I need your help please. Thank you very much.

Answer 1

Initailize the instance of DataModel First.
Then proceed with assignment
_DetailModal = [[DetailModal alloc] init:_pageTitle descripiton:#"Desc" image:#"image"];
There is a instance method defined already to do the task.
After this also you can alter the value by
_DetailModal.title = #"title_of_yours"

Answer 2

If you have to use detailmodal, you must alloc the restaurant class object (detailmodal). Then only the objects can be used.
detailmodal=[[restaurant alloc]init];
detailmodal.title=_pagetitle;

Answer 3

Before you can use a object, you have to create it first.
DetailModal *detailModal = [DetailModal new];
That way the object will be created and values stored to the class properties will be reserved.

Answer 4

Try:
_DetailModal.title = [[NSString alloc] initWithString: _pageTitle];
(Did not test this)

Answer 5

plz chek you _DetailModal is not nil
if it's nil then
first you need to alloc the memory for you DetailModal Class object
like this
DetailModal *detailModal = [DetailModal new];
then after set the value you want
detailModal.title = _pageTitle;