Question

The following code isn’t working out for me. Whenever the method is called the app crashes What have i done wrong?

This code does use a storyboard format

in the .h file

@class SendVideoViewController;

...

@property (nonatomic) SendVideoViewController *sendVideoViewController;

in the .m file

#import "SendVideoViewController.h"
...
@synthesize sendVideoViewController;
...
- (IBAction)signMeUpButtonPressed:(id)sender {
termsAndConditionsViewController = [[TermsAndConditionsViewController alloc] init];
[self presentViewController:termsAndConditionsViewController animated:YES completion:nil];
//[self.view insertSubview:termsAndConditionsViewController.view atIndex:0];
}

Answer 1

Your code should read:

sendVideoViewController = [[SendVideoViewController alloc] init];
[self presentViewController:sendVideoViewController animated:YES completion:nil];

Right now you are instantiating a generic UIViewController class. In order to create an object of the type which you have defined in your SendVideoViewController class, you need to call +alloc on that class, not UIViewController. You might want to brush up on the documentation.