Question

I’m currently busy converting my code to ARC and ran into a little bit of trouble using local variables. As they are only kept in memory as long as the compiler thinks I need them, they usually get released after the last method call to them.

Unfortunately, my application contains a HUD with custom stuff in it, like UIButtons. The selectors of those are pointing to the HUD itself and so I always get an EXC_BAD_ACCESS because the controller was released after it was instantiated.

Is there any solution to this besides creating an instance variable in my class header?

Answer 1

Although it’s really the same thing as putting an iVar in the header, you can at least keep things cleaner by creating a private category at the top of the .m file that defines properties you can hold the UIButtons in.

@interface MyClass ()
@property (nonatomic, retain) UIButton *myButton;
@end

@implementation MyClass
@synthesize myButton;

....

self.myButton = thingThatisHoldingYourButton;

// Now for the block