Question

I have about 20 buttons added from Interface Builder, and when pressed they change colour like so:

-(IBAction)button1:(id)sender
{
    if(playerTurn == YES)
    {
        button1.backgroundColor = [UIColor redColor];
    }
}

But to shorten things it seems like I could just have a general method, so that every button when pressed runs the method. Something like:

-(IBAction)button1:(id)sender
{
    //Go to method and make this button red
}
-(void)changeColour
{
    if(playerTurn == YES)
    {
        buttonThatWasSent.backgroundColor = [UIColor redColor];
    }
}

Unfortunately I can’t figure out how to do that. It seems selectors/senders are the answer? But I’ve not managed to make any tutorials I’ve found work.

Answer 1

You were pretty close!

- (IBAction)myActionWithAnArbitraryName:(UIButton *)sender
{
    if(playerTurn == YES) {
        [sender setBackgroundColor:[UIColor redColor]];
    }
}