Loading array from folder of images - xcode - ios

Question

I am having some trouble loading images from a file into an array. I have used a combination of questions I have found on here, and am out of ideas.... I am new to objective-c and rusty on the rest.
My viewDidLoad simply calls my showPics method, and for testing sake I have the _imgView just show the image at position 1 in the array.
It could very well be a problem with the way I am showing the images as well. I have a ViewController and one ImageView (titled: imgView) in my Storyboard.
here is my showPics method:
-(void)showPics
{
NSArray *PhotoArray = [[NSBundle mainBundle] pathsForResourcesOfType:#"jpg" inDirectory:#"Otter_Images"];
NSMutableArray *imgQueue = [[NSMutableArray alloc] initWithCapacity:PhotoArray.count];
for (NSString* path in PhotoArray)
{
[imgQueue addObject:[UIImage imageWithContentsOfFile:path]];
}
UIImage *currentPic = _imgView.image;
int i = -1;
if (currentPic != nil && [PhotoArray containsObject:currentPic]) {
i = [PhotoArray indexOfObject:currentPic];
}
i++;
if(i < PhotoArray.count)
_imgView.image= [PhotoArray objectAtIndex:1];
}
Here is my viewDidLoad:
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
[self showPics];
}
Here is my ViewController.h
#interface ViewController : UIViewController
#property (weak, nonatomic) IBOutlet UIImageView *imgView;
#end
Please let me know if you need anything else and thank you in advance!

Answer 1

In your showPics method, other than the initial 'for-loop', all of your references to PhotoArray should instead be references to imgQueue. PhotoArray is a list of pathnames. imgQueue is the array of actual UIImage objects.
-(void)showPics {
NSArray *PhotoArray = [[NSBundle mainBundle] pathsForResourcesOfType:#"jpg" inDirectory:#"Otter_Images"];
NSMutableArray *imgQueue = [[NSMutableArray alloc] initWithCapacity:PhotoArray.count];
for (NSString* path in PhotoArray) {
[imgQueue addObject:[UIImage imageWithContentsOfFile:path]];
}
UIImage *currentPic = _imgView.image;
int i = -1;
if (currentPic != nil && [imgQueue containsObject:currentPic]) {
i = [imgQueue indexOfObject:currentPic];
}
i++;
if(i < imgQueue.count) {
_imgView.image = [imgQueue objectAtIndex:1];
}
}