Question

In my code, I’ve customized the initWithNibName to receive some data it needs to do it’s thing. Here’s the code:

    - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil theArray:(NSArray *)theDataArray theVal:(NSInteger)theDataValue bRange:(BOOL)isRange bColor:(BOOL)isColor{

    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
        self.data = theDataArray;
        self.selectedValue = theDataValue;
        NSLog(@"NCG - initWithNibName setting selectedValue = %d.", self.selectedValue);
        //self.originalValue = theDataValue;
        self.isTheRange = isRange;
        self.isTheColor = isColor;
        self.selectedIndex = [self indexFromValue:theDataValue bRange:self.isTheRange bColor:self.isTheColor];
        self.doneClicked = NO;
        //NSLog(@"Selected Row = %d.", self.selectedIndex);
    }
    return self;
}

When this view runs, it updates self.selectedValue to a new value. I need this value in the view that pushed this view once this view is popped.

How do I get this data?

Answer 1

When I have this I usually have a ‘parentReference’ data member
ex:

#import "A.h";
#import "B.h";

            @implementation A

                - (void) f
                {
                  B *bInstance = [[B alloc] init];
                  bInstance.parentRef = self;

                  [self.navigationController pushViewController: bInstance];
                }

//while ‘B’ class is declared like

@class A;
@interface B : UIViewController
{
  A *parentRef;
}
@property (nonatomic, assign) A *parentRef;

that way, you can go back to the class that ‘summoned’ you and do whatever you want

(you might think that [self.view superview] == parentRef , but that’s not true)