Pass or associate id (any object) with NSObject(UIView,UIAlertView, etc). Add string Tags to NSObject.

Create a category of NSObject Class

.h

#import <Foundation/Foundation.h>

#import <objc/runtime.h>

#pragma mark - NSObject

@interface NSObject (CCFoundation)

- (id)associativeObjectForKey: (NSString *)key;

- (void)setAssociativeObject: (id)object forKey: (NSString *)key;

@end

.m

#pragma mark - NSObject

@implementation NSObject (CCFoundation)

static char associativeObjectsKey;

- (id)associativeObjectForKey: (NSString *)key {

    NSMutableDictionary *dict = objc_getAssociatedObject(self, &associativeObjectsKey);

    return [dict objectForKey: key];

}

- (void)setAssociativeObject: (id)object forKey: (NSString *)key {

    NSMutableDictionary *dict = objc_getAssociatedObject(self, &associativeObjectsKey);

    if (!dict) {

        dict = [[NSMutableDictionary alloc] init];

        objc_setAssociatedObject(self, &associativeObjectsKey, dict, OBJC_ASSOCIATION_RETAIN);

    } [dict setObject: object objectForKey: key];

}

@end

-------------------:USAGE:-----------------

UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"title" message:@"alert" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"OK",nil];

// Associate MyObject(of type id) with a key

[alertView setAssociatedObject:MyDict forKey:@"kKeyResponse"];

alertView.tag = KTagAlert;

[alertView show];

#pragma mark- Alert View Delegate-

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex;

{

    if (alertView.tag == KTagNotificationAlert) {

// Fetch the associated object(id) currently dictionary 

   NSMutableDictionary *associatedObjectDict = [alertView associativeObjectForKey:@"kKeyResponse"];

NSLog(@"%@", associatedObjectDict);

        if (associatedObjectDict) {

            //Valid

            switch (buttonIndex) {

                case 0:{// cancel pressed

                    break;

                }

                case 1: {// ok pressed

                    break;

                }

                default:

                    break;

            }

        }

        else{

            [[[UIAlertView alloc]initWithTitle:@"Error" message:@"Please try later." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil] show];

        }

    }

}

1. Refer Link
2. Refer Link