Sending NSString to another viewController

nickpsaris · January 18th, 2012, 06:41 PM

I want to set an NSString in the RootViewController then when the user goes to DetailView, i could pass that string with the new view.

RootViewController
---------------------

Code:

.h

    NSString *core;


@property (nonatomic, retain) NSString *core;


.m

DetailViewController *DetailViewController = [[DetailViewController alloc] initWithNibName:@"DetailViewController" bundle:nil];

DetailViewController.core = core;

DetailViewController
-----------------------

Code:

.h

    NSString *core;


@property (nonatomic, retain) NSString *core;


.m

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:core]];
NSLog(@"core is => %@",core);

every time core is null

i also try

DetailViewController
-----------------------

Code:

.h

    NSString *core;


@property (nonatomic, retain) NSString *core;

-(void) getcore:(NSString*) cores;


.m

-(void) getcore:(NSString*) cores{
    cores = [core retain];   
}

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:core]];
NSLog(@"core is => %@",core);

RootViewController
---------------------

Code:

.h

    NSString *core;


@property (nonatomic, retain) NSString *core;


.m

DetailViewController *DetailViewController = [[DetailViewController alloc] initWithNibName:@"DetailViewController" bundle:nil];


[storeDetailViewController getcore:core];

with the same result.

thepianoguy · January 19th, 2012, 12:54 AM

Based on what you have posted, you have never allocated, initialized or set the string to any characters. You are trying to open a URL with a string whose value is NULL. What is the value the NSString is supposed to be set to?
Bob