my method definition is not found but i'm not sure why - ios

Question

I have a storyboard with tabbed browsing. One of the tabs is a table view. The table is populated by a list of animal "titles". when the title is pressed, a detailed view is opened that displays the title in addition to a sound and the number of times that the animal has been clicked. I have a view controller set up. I also have item.h/m and itemstore.h/m. there is also a detailedviewcontroller. my current problem is that in the item store i have two arays set up but right off the bat xcode is telling me that method definitions aren't found. its also giving my undeclared identifier errors.
FSAnimalsViewController.h (this is my table view controller)
#import <AVFoundation/AVAudioPlayer.h>
#import <UIKit/UIKit.h>
#import "FSDetailViewController.h"
#interface FSAnimalsViewController : UITableViewController
{
}
#end
FSAnimalsViewController.m
#import "FSAnimalsViewController.h"
#import "FSItemStore.h"
#import "FSItem.h"
#implementation FSAnimalsViewController
- (id)init
{
// Call the superclass's designated initializer
self = [super initWithStyle:UITableViewStyleGrouped];
if (self)
{
UINavigationItem *n = [self navigationItem];
[n setTitle:#"FoxSays"];
// Create a new bar button item that will send
// addNewItem: to ItemsViewController
[[self navigationItem] setLeftBarButtonItem:[self editButtonItem]];
}
return self;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[[self tableView] reloadData];
}
- (id)initWithStyle:(UITableViewStyle)style
{
return [self init];
}
- (void)tableView:(UITableView *)aTableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
FSDetailViewController *detailViewController = [[FSDetailViewController alloc] init];
NSArray *items = [[FSItemStore defaultStore] allItems];
FSItem *selectedItem = [items objectAtIndex:[indexPath row]];
// Give detail view controller a pointer to the item object in row
[detailViewController setItem:selectedItem];
// Push it onto the top of the navigation controller's stack
[[self navigationController] pushViewController:detailViewController
animated:YES];
}
- (NSInteger)tableView:(UITableView *)tableView
numberOfRowsInSection:(NSInteger)section
{
return [[[FSItemStore defaultStore] allItems] count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
// Set the cell identifier
static NSString *CellIdentifier = #"BasicCell";
// Reuse the cell from the identifier
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
// Configure the cell if it doesn't exist
if (!cell)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
// Log the row for debugging
NSLog(#"%d", [indexPath row]);
// Get object from store
FSItem *item = [[[FSItemStore defaultStore] allItems] objectAtIndex:[indexPath row]];
// Set label to from property in object
[[cell textLabel] setText:[item title]];
return cell;
}
#end
FSItem.h
#import <Foundation/Foundation.h>
#import <AudioToolbox/AudioToolbox.h>
#import <AVFoundation/AVAudioPlayer.h>
#interface FSItem : NSObject
#property (nonatomic, copy) NSString *title;
#property (nonatomic) SystemSoundID *sound;
#property (nonatomic) int plays;
- (NSArray *)animals;
- (NSArray *)sounds;
#end
FSItem.m
#import <AudioToolbox/AudioToolbox.h>
#import "FSItem.h"
#implementation FSItem
NSString *title;
SystemSoundID *sound;
int plays;
- (NSArray *)animals
{
NSArray *animals = [NSArray arrayWithObjects:#"Dog",#"Cat",#"Bird",#"Mouse",#"Cow",#"Frog",#"Elephant",#"Duck",#"Fish",#"Seal",#"Fox", nil];
return animals;
}
- (NSArray *)sounds
{
NSArray *sounds = [NSArray arrayWithObjects:
#"Woof.mp3",
#"Meow.mp3",
#"tweet.mp3",
#"Squeak.mp3",
#"Moo.mp3",
#"Croak.mp3",
#"Toot.mp3",
#"Quack.mp3",
#"Blub.mp3",
#"OWOwOw.mp3",
#"Fox.mp3",
nil];
return sounds;
}
#end
FSItemStore.h
#import <AVFoundation/AVAudioPlayer.h>
#import <AudioToolbox/AudioToolbox.h>
#import <Foundation/Foundation.h>
#class FSItem;
#interface FSItemStore : NSObject
{
NSMutableArray *allItems;
}
#property (nonatomic) int i;
+ (FSItemStore *)defaultStore;
- (NSArray *)allItems;
- (NSArray *)animals;
- (NSArray *)sounds;
- (FSItem *)createItem;
#end
FSItemStore.m
#import <AudioToolbox/AudioToolbox.h>
#import "FSItem.h"
#import "FSItemStore.h"
#implementation FSItemStore
int i = 0;
- (NSArray *)allItems
{
return allItems;
}
+ (FSItemStore *)defaultStore;
{
static FSItemStore *defaultStore = nil;
if(!defaultStore)
defaultStore = [[super allocWithZone:nil] init];
return defaultStore;
}
- (FSItem *)createItem
{
FSItem *item = [[FSItem alloc] init];
if (i < [animals count])
{
[item setTitle: [animals objectAtIndex: i]];
[item setSound: [sounds objectAtIndex: i]];
[item setPlays: 0];
i++;
[allItems addObject: item];
}
return item;
}
#end
FSItemStore is where my problems seem to be. Its saying that method definition for sounds and animals isn't found and both sounds and animals are undeclared identifiers. Anyone got any ideas?

Answer 1

Your problem is that in your H file you are declaring that your class will implement a method called animals that will return an NSArray, and a method call sounds that will return another NSArray, but in your M file you are not implementing these methods.
In your FSItemStore.m you should implement these methods:
- (NSArray *)animals{
//Do whatever this method is supposed to do, return an NSArray.
}
- (NSArray *)sounds
{
//Do whatever this method is supposed to do, return an NSArray.
}
EDIT
If what you pretend is that FSItemStore inherits the methods from FSItem, you have to declare the interface that way:
#interface FSItemStore : FSItem //FSItem instead of NSObject
{
NSMutableArray *allItems;
}

Answer 2

If I understood your code correctly you want to set one of the animals and sounds initialized in FSItem::sounds and FSItem::animals to the new item that you create in FSItemStore::createItem. So the animals and sounds methods should be executed ont eh correct object - the FSItem object. Change your code in FSItemStore::createItem to this -
- (FSItem *)createItem
{
FSItem *item = [[FSItem alloc] init];
if (i < [animals count])
{
[item setTitle: [[item animals] objectAtIndex: i]];
[item setSound: [[item sounds] objectAtIndex: i]];
[item setPlays: 0];
i++;
[allItems addObject: item];
}
return item;
}
This is still a bad way of doing what you want, as the NSArray will be initialized everytime you create an item. If the number of sounds and animals is fixed, better define them so that they just get initialized once e.g. static objects in FSItem or property on FSItemStore

Answer 3

You haven't defined any properties or variables that are called animals or items. You have only defined the getter methods.
e.g.
#property(nonatomic,strong) NSArray *animals;
#property(nonatomic,strong) NSArray *items;
Then the implementation of your getters, would return these properties.