How to pass a variable to a UIButton action

Question

I want to pass a variable to a UIButton action, for example

NSString *string=@\"one\";
[downbutton addTarget:self action:@selector(action1:string)
     forCo         


        

Answer 1

Another option for passing variables, which I find to be more direct than the tag from leviatan's answer is to pass a string in the accessibilityHint. For example:

button.accessibilityHint = [user objectId];

Then in the action method of the button:

-(void) someAction:(id) sender {
    UIButton *temp = (UIButton*) sender;
    NSString *variable = temp.accessibilityHint;
    // anything you want to do with this variable
}

Answer 2

You can extends UIButton and add a custom property

//UIButtonDictionary.h
#import <UIKit/UIKit.h>

@interface UIButtonDictionary : UIButton

@property(nonatomic, strong) NSMutableDictionary* attributes;

@end

//UIButtonDictionary.m
#import "UIButtonDictionary.h"

@implementation UIButtonDictionary
@synthesize attributes;

@end