如何在另一个视图中访问NSArray

Question

I have some problems with my XML parser, written in obj-c. The parser itself is fine but I cant access the result Array in the DetailView.

I need the values of the array created by the Parser Class in my Master and DetailViewController.

In MasterViewController I do this:

MasterViewController.h

#import <UIKit/UIKit.h>
#import "AppDelegate.h"
#import "TouchXML.h"
#import "Parser.h"

@class Parser;

@interface MasterViewController : UITableViewController{
    Parser *theParser;
    }

MasterViewController.m

- (void)viewDidLoad
{
    theParser = [[Parser alloc] init];
    [theParser startParser:xmlPath]; //Now the parser runs and parses all needed values into arrays
}

Then I push on click the DetailView and I want to access the values there too.

UniViewController.h

#import <UIKit/UIKit.h>
#import "AppDelegate.h"
#import "Parser.h"

@interface UniViewController : UITableViewController{

    Parser *theParser;
}

UniViewController.m

- (void)viewDidLoad
{
   NSLog(@"Name: %@",[[theParser.listArray objectAtIndex: 0]valueForKey:@"name"]);
}

Here I want to access the the Array from the parser but I always get the value (null) ? In the debugger I saw that theParser has 0x0000 which cant be right... After I do theParser = [[Parser alloc] init]; here, it has an hex value but I still get the (null).

How can I access the Array values from the DetailView?

Would be really nice if someone could explain me the problem here.

Thanks.

Answer 1

Your detail view has to have a pointer to the array that your MasterView creates (via the parser), try this:

(void)viewDidLoad
{
    aParser = [[Parser alloc] init];
    [aParser startParser:xmlPath];
    myUniView.theParser = aParser; //myUniView is just the detail view you're pushing

and then after this you can push your detail view.