objective c - Loading images for animation in UIImageView - iOS

Question

I have around 300 images to be loaded for animation the images are named loading001.png, loading002.png, loading003.png, loading004.png………loading300.png

I am doing it in the following way.

.h file

    #import <UIKit/UIKit.h>
    @interface CenterViewController : UIViewController  {
        UIImageView *imgView;
    }

    @end

.m file

@implementation CenterViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    imgView = [[UIImageView alloc] init];
    imgView.animationImages = [[NSArray alloc] initWithObjects:
                               [UIImage imageNamed:@"loading001.png"],
                               [UIImage imageNamed:@"loading002.png"],
                               [UIImage imageNamed:@"loading003.png"],
                               [UIImage imageNamed:@"loading004.png"],
                               nil];
}

- (IBAction)startAnimation:(id)sender{
    [imgView startAnimating];
}

@end

Is there a efficient way to load the images into a array. I had tried it with for loop but was not able to figure it out.

Answer 1

You may try out the following code to load images into an array in a better way

- (void)viewDidLoad {
    [super viewDidLoad];

    NSMutableArray *imgListArray = [NSMutableArray array];
    for (int i=1; i <= 300; i++) {
        NSString *strImgeName = [NSString stringWithFormat:@"loading%03d.png", i];
        UIImage *image = [UIImage imageNamed:strImgeName];
            if (!image) {
                NSLog(@"Could not load image named: %@", strImgeName);
            }
            else {
                [imgListArray addObject:image];
            }
        }
    imgView = [[UIImageView alloc] init];
    [imgView setAnimationImages:imgListArray];
}