Question

I am trying to access my UIButton in my Play class from my CCLayerClass.

The problem is that it is not working!

Here is how I declare it in the Play class:
.h

IBOutlet UIButton *pauseButton;
@property(nonatomic, retain) IBOutlet UIButton *pauseButton;

.m

@synthesize pauseButton;

Then in the dealloc:

[pauseButton release];

Also of course I connect it then in Interface builder.

Then in my other class (My CCLayer) class. I try to do this:

Play *play = [[[Play alloc] init] autorelease];
[play.pauseButton setHidden:YES];

The thing is, is that it simply just does not hide the button. Is there any reason for this?

Thanks!

Edit1:
My Play.h

IBOutlet UIButton *pauseButton;
BOOL pauseButtonVisible;

@property(nonatomic, retain) IBOutlet UIButton *pauseButton;
@property(readwrite) BOOL pauseButtonVisible;

.m

@synthesize pauseButton;

- (void)setPauseButtonVisible: (BOOL) variableToSet {
    pauseButtonVisible = variableToSet;
    if(pauseButton)
        [pauseButton setHidden: !pauseButtonVisible];
}
- (BOOL) pauseButtonVisible
{
    return(pauseButtonVisible);
}

viewWillAppear:

[pauseButton setHidden: !pauseButtonVisible];

I also made sure I connected it in Interface Builder

Then in CCLayerClass I do this:

Play *play = [[[Play alloc] init] autorelease];
    if(play.pauseButton == NULL) {  
        NSLog( @"pause button is NULL");
    }

But that NSLog gets called! Why is my pauseButton NULL? I just need to alloc it so it stays alive, is that possible?

Thanks!
play.pauseButtonVisible = YES;

Answer 1

Okay. Hopefully third time is the charm (and after that, I’m giving up cause it’s time for me to go to bed).

Here in the .h file, I’m keeping the new pauseButtonVisible BOOL property.

@interface Play : UIViewController
{
    BOOL pauseButtonVisible;
    IBOutlet UIButton *pauseButton;
}

@property(nonatomic, retain) IBOutlet UIButton *pauseButton;
@property(readwrite) BOOL pauseButtonVisible;

@end    

But in the .m file, we’re doing something a little different:

@interface Play

// here we are rolling our own setters and getters
// instead of @synthesizing...
- (void)setPauseButtonVisible: (BOOL) variableToSet
{
    pauseButtonVisible = variableToSet;
    if(pauseButton)
        [pauseButton setHidden: !pauseButtonVisible];
}

- (BOOL) pauseButtonVisible
{
    return(pauseButtonVisible);
}

- (void) viewWillAppear: (BOOL) animated
{
    [pauseButton setHidden: !pauseButtonVisible];
    [super viewWillAppear: animated];
}

and

Play *play = [[[Play alloc] init] autorelease]; // you should really be using initWithNibName, but anyways
play.pauseButtonVisible = YES;

So now, hopefully pause button will be visible or hidden at the appropriate time for while your code is running.