iOS Programming: The Big Nerd Ranch Guide

Creating Model Objects

View objects make up the user interface, so developers typically create, configure, and connect view objects using Interface Builder. Model objects, on the other hand, are set up in code.

In the project navigator, select BNRQuizViewController.m. Add the following code that declares an integer and pointers to two arrays.

@interface BNRQuizViewController ()

@property (nonatomic) int currentQuestionIndex;

@property (nonatomic, copy) NSArray *questions;
@property (nonatomic, copy) NSArray *answers;

@property (nonatomic, weak) IBOutlet UILabel *questionLabel;
@property (nonatomic, weak) IBOutlet UILabel *answerLabel;

@end

@implementation

@end

The arrays will be ordered lists containing questions and answers. ...