sender currentTitle not recognized in Xcode - iphone

Question

I am doing something as simple as get the current title of an UIButton
-(IBAction)buttonPressed:(id)sender{
NSString *someString = [sender currentTitle];
}
For some reason Xcode confuses sender with self because the complete options only retunrns methods that belongs to "self". No matter whatever I do, I get the same
-(IBAction)buttonPressed:(id)sender{
UIButton *btn = (UIButton *)sender;
NSString *someString = [btn currentTitle];
}
Xcode crashes in NSString line with "unrecognized selector sent to btn". I can copy working code from another project and the same happens. What could be wrong?
SOLUTION
Resarted XCode and it worked fine o.O

Answer 1

I don't think Xcode is confusing sender with self, what's happening is that Xcode knows nothing about sender, since it was declared as id, which means Xcode only knows it's an object.
The suggestions you are getting in Xcode are probably just methods every object has.
You have to make sure that sender is what you expect, try doing this and checking if it's actually a button or something else:
-(IBAction)buttonPressed:(id)sender{
NSLog(#"Sender: %#", sender);
}

Answer 2

SOLUTION
Resarted XCode and it worked fine o.O

Answer 3

Possible reason for "unrecognized selector sent to btn" is when you call a method which was not actually written. Or you might be called
[self buttonPressed];
instead of
[self buttonPressed:];

Answer 4

Your problem is your calling the 'id' not the button its self. Replace the 'id' with 'UIButton' like so...
-(IBAction)buttonPressed:(UIButton *)sender{
NSString *someString = sender.currentTitle;
}

Answer 5

I think the problem is wrong syntax
It is
sender.currentTitle;
OR
btn.currentTitle;
currentTitle is a property and there is no function called currentTitle and hence you get the error "unrecognized selector sent to btn".