Button triggers two actions while pressing the changed button title

Question

I have changed button title of a UIButton programmatically. I have also assigned an action to changed button title. Now when i tap on the button, it triggers both the action (one with same button title and one with changed). However, i want to trigger only one action for the changed title button.

How can i do it? Any help would be appreciated.

Answer 1

Two solutions. Toggle the target/action between methods or decide what to do based on some state.

1.

- (void)method1:(id)sender;
{
  [sender removeTarget:nil action:NULL forControlEvents:UIControlEventTouchUpInside];
  [sender addTarget:self action:@selector(method2:) forControlEvents:UIControlEventTouchUpInside];
}

- (void)method2:(id)sender;
{
  [sender removeTarget:nil action:NULL forControlEvents:UIControlEventTouchUpInside];
  [sender addTarget:self action:@selector(method1:) forControlEvents:UIControlEventTouchUpInside];
}

2a.

- (void)buttonTapped;
{
  if (self.someState) {

  } else {

  }
}

2b.

- (void)buttonTapped:(UIButton *)button;
{
    if ([[button titleForState:UIControlStateNormal] isEqualToString:@"First title"]) {

    } else {

    }
}