objective-c :

Table Views Getting Started (Ray Wenderlich).m

//TableViews Getting Started (Ray Wenderlich) TableViews Chapter 1 Getting Started


//1. PrettyIcons

//Icon.h

typedef NS_ENUM(NSInteger, RatingType) {
  RatingTypeUnrated,
  RatingTypeUgly,
  RatingTypeOK,
  RatingTypeNice,
  RatingTypeAwesome
};

@interface Icon : NSObject

@property (strong, nonatomic) NSString *title;
@property (strong, nonatomic) NSString *subtitle;
@property (strong, nonatomic) UIImage *image;
@property (assign) RatingType rating;

- (instancetype)initWithTitle:(NSString *)title subtitle:(NSString *)subtitle imageName:(NSString *)imageName;

@end


//Icon.m

@implementation Icon

- (instancetype)initWithTitle:(NSString *)title subtitle:(NSString *)subtitle imageName:(NSString *)imageName {
  if ((self = [super init])) {
    _title = title;
    _subtitle = subtitle;
    _image = [UIImage imageNamed:imageName];
    _rating = RatingTypeUnrated;
  }
  return self;
}

@end



//IconSet.h

@interface IconSet : NSObject

@property (strong, nonatomic) NSString *name;
@property (strong, nonatomic) NSMutableArray *icons;

+ (NSMutableArray *)iconSets;
- (instancetype)initWithName:(NSString *)name icons:(NSMutableArray *)icons;

@end


//IconSet.m

#import "Icon.h"

@implementation IconSet

- (instancetype)initWithName:(NSString *)name icons:(NSMutableArray *)icons {
  if ((self = [super init])) {
    _name = name;
    _icons = icons;
  }
  return self;
}


+ (IconSet *)winterSet {

  NSMutableArray *icons = [NSMutableArray array];

  [icons addObject:[[Icon alloc] initWithTitle:@"Ornament" subtitle:@"Hang on your tree" imageName:@"icons_winter_01.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Candy Cane" subtitle:@"Mmm, tasty" imageName:@"icons_winter_02.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Snowman" subtitle:@"A very happy soul" imageName:@"icons_winter_03.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Penguin" subtitle:@"Mario's friend" imageName:@"icons_winter_04.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Santa Hat" subtitle:@"Found it in the chimney" imageName:@"icons_winter_05.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Gift" subtitle:@"Under the tree" imageName:@"icons_winter_06.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Gingerbread Man" subtitle:@"Lives in a yummy house" imageName:@"icons_winter_07.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Christmas Tree" subtitle:@"Smells good" imageName:@"icons_winter_08.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Snowflake" subtitle:@"Unique and beautiful" imageName:@"icons_winter_09.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Reindeer" subtitle:@"A very shiny nose" imageName:@"icons_winter_10.png"]];
  
  return [[IconSet alloc] initWithName:@"Winter" icons:icons];

}


+ (IconSet *)summerSet {

  NSMutableArray *icons = [NSMutableArray array];
  
  [icons addObject:[[Icon alloc] initWithTitle:@"Sun" subtitle:@"A beautiful day" imageName:@"summericons_100px_01.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Beach Ball" subtitle:@"Fun in the sand" imageName:@"summericons_100px_02.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Swim Trunks" subtitle:@"Time to go swimming" imageName:@"summericons_100px_03.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Bikini" subtitle:@"Bow-chicka-bow-wow" imageName:@"summericons_100px_04.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Sand Bucket and Shovel" subtitle:@"A castle in the sand" imageName:@"summericons_100px_05.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Surfboard" subtitle:@"Catch a wave" imageName:@"summericons_100px_06.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Strawberry Dacquari" subtitle:@"Great way to relax" imageName:@"summericons_100px_07.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Sunglasses" subtitle:@"I wear them at night" imageName:@"summericons_100px_08.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Flip Flops" subtitle:@"Sand between your toes" imageName:@"summericons_100px_09.png"]];
  [icons addObject:[[Icon alloc] initWithTitle:@"Ice Cream" subtitle:@"A summer treat" imageName:@"summericons_100px_10.png"]];
  
  return [[IconSet alloc] initWithName:@"Summer" icons:icons];
}


+ (NSMutableArray *)iconSets {
  return [@[[self winterSet], [self summerSet]] mutableCopy];
}

@end





//AppDelegate.h

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;

@end




//AppDelegate.m

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // Override point for customization after application launch.
    return YES;
}




//ViewController.h

@interface ViewController : UITableViewController

@end




//ViewController.m

#import "IconSet.h"
#import "Icon.h"

@interface ViewController () <UITableViewDataSource, UITableViewDelegate>

@property (strong, nonatomic) NSArray *icons;

@end

@implementation ViewController

- (void)viewDidLoad
{
  [super viewDidLoad];

  NSArray *iconSets = [IconSet iconSets];
  IconSet *set = (IconSet *)iconSets[0];
  self.icons = set.icons;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
  return self.icons.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

  // Create the cell (based on prototype)
  UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"IconCell" forIndexPath:indexPath];
  
  // Configure the cell
  Icon *icon = self.icons[indexPath.row];
  cell.textLabel.text = icon.title;
  cell.detailTextLabel.text = icon.subtitle;
  cell.imageView.image = icon.image;
  
  return cell;  
}


@end




//2. Multiple Sections

//Change below code

@interface ViewController () <UITableViewDataSource, UITableViewDelegate>

//@property (strong, nonatomic) NSArray *icons; ->
@property (strong, nonatomic) NSArray *iconSets;

@end


@implementation ViewController

- (void)viewDidLoad
{
  [super viewDidLoad];
  self.iconSets = [IconSet iconSets];
}


- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
  return self.iconSets.count;
}


//if you want a custom look for the header, implement tableView:viewForHeaderInSection: instead
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
  IconSet *set = self.iconSets[section];
  return set.name;
}


- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
  IconSet *set = self.iconSets[section];
  return set.icons.count;
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

  // Create the cell (based on prototype)
  UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"IconCell" forIndexPath:indexPath];
  
  // Configure the cell
  IconSet *set = self.iconSets[indexPath.section];
  Icon *icon = set.icons[indexPath.row];
  cell.textLabel.text = icon.title;
  cell.detailTextLabel.text = icon.subtitle;
  cell.imageView.image = icon.image;
  
  return cell;  
}


@end