Question

I want to make a image generator but the only thing I can find anywhere is a random one, but I need them to be and a specific order.

Here’s what I have, but I dont want the images to be in random order:

.h file

@interface ViewController :UIViewController {
    IBOutlet UIImageView *imageview;
    IBOutlet UIImageView *imageview2;
}

-(IBAction)randomimagebutton;

-(IBAction)randomimagebutton2;

@end

.m file

-(IBAction)randomimagebutton {

int randomimages = rand() % 8;

switch (randomimages) {
    case 0:            
        imageview.image = [UIImage imageNamed:@"eye right wihte.png"];
        break;

    case 1:
        imageview.image = [UIImage imageNamed:@"eye right red.png"];
        break;

    case 2:
        imageview.image = [UIImage imageNamed:@"eye right pink.png"];
        break;

    case 3:
        imageview.image = [UIImage imageNamed:@"eye right light blue.png"];
        break;

    case 4:
        imageview.image = [UIImage imageNamed:@"eye right dark blue.png"];
        break;

    case 5:
        imageview.image = [UIImage imageNamed:@"eye right light green.png"];
        break;

    case 6:
        imageview.image = [UIImage imageNamed:@"eye right dark green.png"];
        break;

    case 7:
        imageview.image = [UIImage imageNamed:@"eye right orange.png"];
        break;

    case 8:
        imageview.image = [UIImage imageNamed:@"eye right yellow.png"];
        break;

    default:
        break;

}

}

-(IBAction)randomimagebutton2 {

int randomimages = rand() % 8;

switch (randomimages) {
    case 0:
        imageview2.image = [UIImage imageNamed:@"eye left white.png"];
        break;

    case 1:
        imageview2.image = [UIImage imageNamed:@"eye left red.png"];
        break;

    case 2:
        imageview2.image = [UIImage imageNamed:@"eye left pink.png"];
        break;

    case 3:
        imageview2.image = [UIImage imageNamed:@"eye left light blue.png"];
        break;

    case 4:
        imageview2.image = [UIImage imageNamed:@"eye left dark blue.png"];
        break;

    case 5:
        imageview2.image = [UIImage imageNamed:@"eye left light green.png"];
        break;

    case 6:
        imageview2.image = [UIImage imageNamed:@"eye left dark green.png"];
        break;

    case 7:
        imageview2.image = [UIImage imageNamed:@"eye left orange.png"];
        break;

    case 8:
        imageview2.image = [UIImage imageNamed:@"eye left yellow.png"];
        break;

    default:
        break;

}

}

Answer 1

Well, instead of using int randomimages, use an NSNumber that you increment each time you get an image. Make the NSNumber a property of the class.

Update:

Add the property like this:

@interface ViewController :UIViewController {
    IBOutlet UIImageView *imageview;
    IBOutlet UIImageView *imageview2;
}

-(IBAction)randomimagebutton;
-(IBAction)randomimagebutton2;

@property (nonatomic, retain) NSNumber *index;

@end

And don’t forget @synthesize in you .m.

In the .m file, do this:

- (IBAction)randomimagebutton {

    index = [NSNumber numberWithInt:(([index intValue] + 1) % 8)];

    switch ([index intValue]) {

        ...