Question

In my app I have a main viewcontroller with an imageview. Every time the user goes back to this main view, I would like 1 of 3 images to appear, but I would like to randomize them. Does anyone know the best way to get this done? Could someone point me in the right direction?

It’s a universal ios app in xcode with storyboard.

Thanks!

Answer 1

Something like the following should do the trick…

NSArray *imageArray = @[@"ImageName1", @"ImageName2", @"ImageName3"];
NSUInteger randomImageIndex = arc4random() % [imageArray count];
[yourImage setImage:[UIImage imageNamed:[imageArray objectAtIndex:randomImageIndex]]];

Edit:

Add the following to your view controllers .h file.

@property (strong, nonatomic) IBOutlet UIImageView *yourImage;

Then within your storyboard/view link the UIImageView to yourImage.