How do I implement an image array in Xcode?

Question

I'm trying to create an array of images for an imageView and then change those images when a button is pressed. I'm just testing the ability for the button to cause a method to get and display the image from the array. What am I doing wrong?

This is the code I have so far:

- (void)viewDidLoad {

    NSMutableArray *imagesArray = [[NSMutableArray alloc] initWithObjects:@"Image1.JPG", @"Image2.JPG", nil];
}


-(IBAction)img1 {

    [imageView setImage:[UIImage imageNamed:[imagesArray objectAtIndex:0]]];
}

I also get the warning 'unused variable 'imagesArray'

Thanks for helping!

Solution

you are not retaining NSMutableArray *imagesArray, it goes out of scope as soon as viewDidLoad completes.

try this:

declare instance variable NSMutableArray *imagesArray;

and init using

imagesArray = [[NSMutableArray alloc] initWithObjects:@"Image1.JPG", @"Image2.JPG", nil];

Comments

[user1633930]

Problem fixed. Thanks for the help!