Access NSMutableArray created in viewDidLoad on button tap - iphone

Question

In my app I have an animation that plays when the user taps a button. In the IBAction method for the button tap, I am having it create a NSMutable Array, load the images into the array, then cycle through the images.
This results in a fair amount of lag between the button tap and the animation playing, but every tap after that is fine since the array is already created with the images.
I have tried placing the array creation and image loading in the vieDidLoad method, but for some reason the IBAction method (where the call to cycle through the images is) cannot access the array. How would I make the array available to it?
- (IBAction)tap {
NSMutableArray *anim = [[NSMutableArray alloc]initWithObjects:[UIImage imageNamed:#"0001.png"], ...(x30)... nil];
type.animationImages = anim;
type.animationDuration = 1.0;
type.animationRepeatCount = 1;
[type startAnimating];
}

Answer 1

Define NSMutableArray *anim into your UIViewController .h file. It will make it available to global to access anywhere into your .m file.
- (void) viewDidLoad
{
anim = [[NSMutableArray alloc]initWithObjects:[UIImage imageNamed:#"0001.png"], ...(x30)... nil];
}
- (IBAction)tap
{
type.animationImages = anim;
type.animationDuration = 1.0;
type.animationRepeatCount = 1;
[type startAnimating];
}

Answer 2

Define NSMutableArray *anim in .h file ie class member variable
in viewDidLoad method defin like this:
anim = [[NSMutableArray alloc]initWithObjects:[UIImage imageNamed:#"0001.png"], ...(x30)... nil];
Use like this in button event:
- (IBAction)tap
{
type.animationImages = anim;
type.animationDuration = 1.0;
type.animationRepeatCount = 1;
[type startAnimating];
}

Answer 3

Try this simple code may be it help full for you.
Array allocate one time when you tap first time.
if(!anim)
{
NSMutableArray *anim = [[NSMutableArray alloc]initWithObjects:[UIImage imageNamed:#"0001.png"], ...(x30)... nil];
NSLog(#"array allocate");
}else
{
NSLog(#"array already allocated");
}