objective-c : make basic table view with custom background and jason data v.3

snippet.m

//make basic table view with custom background and jason data v.3
//iterate over the recipes and use the addRecipeAtOffset: forSandwich: method
//to add each recipe to the view

//DynamicSandwichViewController.h
@interface DynamicSandwichViewController : UIViewController

@end


//DynamicSandwichViewController.m

#import "DynamicSandwichViewController.h"
#import "SandwichViewController.h" 
#import "AppDelegate.h"

@interface DynamicSandwichViewController ()

@end

@implementation DynamicSandwichViewController
{
    NSMutableArray* _views; //use this variable to keep track of the added views
}

#define debug 1

#pragma mark - retrieve sandwiches from the app delegate

- (NSArray*)sandwiches {
    if (debug==1) {NSLog(@"Running %@ '%@'", self.class, NSStringFromSelector(_cmd));}
    
    AppDelegate* appDelegate = (AppDelegate*)[[UIApplication sharedApplication] delegate];
    return appDelegate.sandwiches;
}


#pragma mark - addRecipeAtOffset (add each recipe to the view)

- (UIView*)addRecipeAtOffset:(CGFloat)offset forSandwich:(NSDictionary*)sandwich {
    if (debug==1) {NSLog(@"Running %@ '%@'", self.class, NSStringFromSelector(_cmd));}
    
    //CGRectOffset : rect, offset x, y (positive numbers are to the right and up)
    CGRect frameForView = CGRectOffset(self.view.bounds, 0.0, self.view.bounds.size.height - offset);
    
    // 1. create the view controller
    UIStoryboard *mystoryboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    SandwichViewController* viewController = [mystoryboard instantiateViewControllerWithIdentifier:@"SandwichVC"];
    // 2. set the frame and provide some data
    UIView* view = viewController.view;
    view.frame = frameForView;
    viewController.sandwich = sandwich;
    
    // 3. add as a child
    [self addChildViewController:viewController];
    [self.view addSubview:viewController.view];
    [viewController didMoveToParentViewController:self];
    return view;
}


#pragma mark - 뷰 라이프 사이클

- (void)viewDidLoad
{
    if (debug==1) {NSLog(@"Running %@ '%@'", self.class, NSStringFromSelector(_cmd));}
    [super viewDidLoad];
    
    // Background image
    UIImageView* backgroundImageView = [[UIImageView alloc] initWithImage:
                                        [UIImage imageNamed:@"Background-LowerLayer.png"]];
    [self.view addSubview:backgroundImageView];
    
    // Header logo
    UIImageView* header = [[UIImageView alloc] initWithImage:
                           [UIImage imageNamed:@"Sarnie.png"]];
    header.center = CGPointMake(220, 190);
    [self.view addSubview:header];
    
    //iterate over the recipes and use the addRecipeAtOffset: forSandwich: method
    //to add each recipe to the view.
    _views = [NSMutableArray new];
    CGFloat offset = 250.0f;
    for (NSDictionary* sandwich in [self sandwiches]) {
        [_views addObject:[self addRecipeAtOffset:offset forSandwich:sandwich]];
        offset -= 50.0f; }
}

@end