Connecting Multiple Buttons to one action?

Question

I have multiple UIButtons in my app. I also use interfacebuilder. In my .h i have something like this

  IBOutlet UIButton *button1;
    IBOutlet UIButton *button2;
    IBOutlet UIButton *button3;
    - (IBAction)buttonPressed;

Then In my m i want to do something like this

- (IBAction)buttonPressed {


if (theButtonIpressed == button1) 

{

// do something if 

}

}

The problem is I don't have something called "theButtonIpressed" so I cant do this. What should my if statement look like? I don't want to make a -(IBAction) for each button. Is there something that I can determine which button was pressed? Thanks!

Thanks,

-David

@David - why not have other `IBAction`s? Your code will be easier to maintain with multiple methods. — Daniel A. White, Apr 07 '10 at 02:20
not if they all do very similar things. that leads to a lot of repeated code, right? — willc2, Apr 14 '10 at 11:47
Follow this answer.http://stackoverflow.com/questions/16050516/how-to-connect-multiple-buttons-in-a-storyboard-to-a-single-action/24842728#24842728 — Tunvir Rahman Tusher, Jul 26 '14 at 07:21

score 4 · Accepted Answer · answered Apr 07 '10 at 03:28

You can also set the tag property for each button in the interface builder and then use it to find out which button was pressed.... This also means that you don't need to define all your button references (UIButton) and keep track of them in code....

- (void) doSomething:(id)sender {

    int buttonPressed = [sender tag];

    switch (buttonPressed) {
       case 0:....
       // etc
     }
}

score 2 · Answer 2 · answered Apr 07 '10 at 02:22

2

Define your - (IBAction)buttonPressed to:

- (IBAction)buttonPressed: (UIButton *) buttonIpressed

Then it will work.

answered Apr 07 '10 at 02:22

Alfons

1,845
14
16

score 1 · Answer 3 · answered Apr 07 '10 at 02:26

1

- (IBAction)buttonPressed:(UIButton*)button

But if you're doing something different for each button then the proper way to do it is to create separate IBActions.

answered Apr 07 '10 at 02:26

indragie

18,002
16
95
164

score 0 · Answer 4 · answered Feb 13 '13 at 06:11

You can use tag values for each buttons

 IBOutlet UIButton *button1;
 button1.tag = 100;
 IBOutlet UIButton *button2; 
 button2.tag = 200;
 IBOutlet UIButton *button3;
 button3.tag = 300;

 - (IBAction)buttonPressed:(id)sender
{
   if ([sender tag]==100) 
   {
     NSLOG("button1");
   }
   else if([sender tag]==200)
   {
     NSLOG("button2");
   }
   else {
     NSLOG("button3");
   }

}

Connecting Multiple Buttons to one action?

4 Answers4