iOS Random Number Generator to a new view

Question

I need some help with an app. I need to make a random number generator for integers between zero and fifteen, which will then, depending on which number is created, push to a view with the corresponding number. This is how I want it to work

Push a button --> random number generator gives a number between 0 and 15 --> view pushes to another view that has been assigned the number that the random number generator gave.

Can anybody help me with the code? Thanks

Answer 1

arc4random() is the standard Objective-C random number generator function. It'll give you a number between zero and... well, more than fifteen! You can generate a number between 0 and 15 (so, 0, 1, 2, ... 15) with the following code:

NSInteger randomNumber = arc4random() % 16; 

Then you can do a switch or a series of if/else statements to push a different view controller:

UIViewController *viewController = nil; switch (randomNumber) {     case 0:         viewController = [[MyViewController alloc] initWithNibName:@"MyViewController" bundle:nil];     break;     // etc ... }  [self.navigationController pushViewController:viewController animated:YES]; 

Or rather, upon rereading the question, it would look like the following:

UIViewController *viewController = [[MyViewController alloc] initWithNibName:@"MyViewController"  viewController.number = randomNumber; 

And you'd have an NSInteger property on the MyViewController subclass.