Check which UIButton was Clicked from another function

Question

In my xib I have taken 4 UIbuttons named button 1, 2, 3 and 4. These four buttons are connected two four different IBAction methods which perform different functions.

Now I have one more button called "Save" This has also a different IBAction method.

- (IBAction)Save:(id)sender
{

}

Now here I want to check which of the above 4 UIButtons have been clicked.

For this I tried checking this way

- (IBAction)Save:(id)sender
{
   if(sender == button1)
   {
      //Do this
   }
   else if (sender == button2)
   {
       //Do this
   }

}

But this is not working. I am doing something wrong.Please help me out

Regards Ranjit.

Answer 1

You can set the tag values for each button in the interface builder and set actions of all buttons to this method

//set global variable flag.

   int flag;

- (IBAction)buttonClicked:(id)sender
{

switch ([sender tag])
{
    case 0:
         {
              flag =0;
             // implement action for first button

         }
        break;
    case 1:
        {
              flag =1;
            // implement action for second button

        }
        break;
    case 2:
        {
              flag =2;
            // implement action for third button

        }
        break;
        //so on
    default:
        break;
}
}

for save button

- (IBAction)save:(id)sender
{

switch (flag)
{
    case 0:
         {

             //  first button clicked

         }
        break;
    case 1:
        { 
            //  second button clicked

        }
        break;
    case 2:
        {
            //  third button clicked

        }
        break;
        //so on
    default:
        break;
}
}

Answer 2

Define a class level ivar as

UIButton *selectedBtn;

Then in you IBActions

- (IBAction)button1:(id)sender {
    selectedBtn = sender // or button1
}

- (IBAction)button2:(id)sender {
    selectedBtn = sender // or button2
}

- (IBAction)button3:(id)sender {
    selectedBtn = sender // or button3
}

- (IBAction)button4:(id)sender {
    selectedBtn = sender // or button4
}

- (IBAction)Save:(id)sender
{
    //Check output of below statement to ensure you're getting a sender
    NSLog(@"Sender: %@", sender);

   if(selectedBtn == button1)
   {
      NSLog(@"Button 1 pressed");
      //Do this
   }
   else if (selectedBtn == button2)
   {
      NSLog(@"Button 2 pressed");
       //Do this
   }
    else if (selectedBtn == button3)
   {
      NSLog(@"Button 3 pressed");
       //Do this
   }
    else if (selectedBtn == button4)
   {
      NSLog(@"Button 4 pressed");
       //Do this
   }
}

Answer 3

Can you try this:

- (IBAction)Save:(id)sender
{
    UIButton *pressedButton = (UIButton*)sender;

    //Check output of below statement to ensure you're getting a sender
    NSLog(@"Sender: %@", sender);

   if([pressedButton isEqual:button1])
   {
      NSLog(@"Button 1 pressed");
      //Do this
   }
   else if ([pressedButton isEqual:button2])
   {
      NSLog(@"Button 2 pressed");
       //Do this
   }

}

Answer 4

In your save method, check the Selected property of the other 4 buttons. If you do not want to keep the buttons in a selected state, but just want to see if they were clicked at some point, then define a property (e.g. an array) to track which buttons were clicked during the session, and check this property in your save method.