NSArray of UIButtons calling the same function

Question

I've been thinking and searching and I can't figure it out. I've come across these two threads which seem to be pieces of my issue:
http://discussions.apple.com/message.jspa?messageID=7891554
http://discussions.apple.com/thread.jspa?threadID=1985019&tstart=0
I'm basically attempting to create an array of 9 UIButtons which will all call the same function, but I need to know which button was clicked.
I'm not entirely sure how to create the NSArray of buttons, and when I include (id)sender with the selectSquare function, it doesn't work. Any help is much appreciated!
// Square a1
a1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[a1 setFrame:CGRectMake(0.0f, 0.0f, 70.0f, 70.0f)];
[a1 setBackgroundImage:[UIImage imageNamed:@"black.png"] forState:UIControlStateNormal];
[a1 setCenter:CGPointMake(60.0f, 200.0f)];
[a1 addTarget:self action:@selector(selectSquare) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:a1];
// I currently have the previous "a1" button code repeated 9 times, each
// with a different button name... I want to put all these in a single
// array instead
-(void) selectSquare:(id) sender {
if(turn == x) {
[sender setBackgroundImage:[UIImage imageNamed:@"x_button.png"] forState:UIControlStateNormal];
statusImage.image = [UIImage imageNamed:@"o_image.png"];

Answer 1

TicTacToe indeed!
The positions I have for my buttons seemed to be perfect when I tested them, so I just went with that vs. using IB.
As for the tag property, would it just be an int? Like:button1.tag = 5And then use the tag as that button's index in the array? So the button with tag 5 would be the 6th element?
Also, I'm still not sure on why -(void) selectSquare:(id) sender; doesn't work. When I click on "a1" (the current button with an action assigned to it), the simulator does nothing and then brings Xcode to the front... But when I take out (id)sender, it works fine.
In the second thread I posted, somebody mentioned something about unbinding and rebinding control actions to fix this, but I'm not too sure what that process entails.
Here is my interface for that controller:#import <UIKit/UIKit.h>
@interface TicTacToeViewController : UIViewController {
UIImageView *statusImage;
UIButton *playButton;
UIButton *a1;
UIButton *a2;
UIButton *a3;
UIButton *b1;
UIButton *b2;
UIButton *b3;
UIButton *c1;
UIButton *c2;
UIButton *c3;
//IBOutlet UILabel *gameText;
//IBOutlet UILabel *x_score;
//IBOutlet UILabel *o_score;
//IBOutlet UILabel *round;
NSInteger turn;
//NSInteger xscorevalue;
//NSInteger oscorevalue;
@property(nonatomic,retain) IBOutlet UIImageView *statusImage;
@property(nonatomic, retain) UIButton *playButton;
@property(nonatomic, retain) UIButton *a1;
@property(nonatomic, retain) UIButton *a2;
@property(nonatomic, retain) UIButton *a3;
@property(nonatomic, retain) UIButton *b1;
@property(nonatomic, retain) UIButton *b2;
@property(nonatomic, retain) UIButton *b3;
@property(nonatomic, retain) UIButton *c1;
@property(nonatomic, retain) UIButton *c2;
@property(nonatomic, retain) UIButton *c3;
//@property(nonatomic,retain) IBOutlet UILabel *gameText;
//@property(nonatomic,retain) IBOutlet UILabel *x_score;
//@property(nonatomic,retain) IBOutlet UILabel *o_score;
//@property(nonatomic,retain) IBOutlet UILabel *round;
@property(nonatomic) NSInteger turn;
//@property(nonatomic) NSInteger x_score;
//@property(nonatomic) NSInteger o_score;
//-(void)reset:(BOOL) newGame;
-(void) selectSquare:(id) sender;
@end