keicoder

//give object a unique numeric ID (itemId)

//ChecklistItem.h
@property (nonatomic, assign) NSInteger itemId;

//ChecklistItem.m
//initWithCoder - for view controllers that are automatically loaded from a nib or Storyboard
//for unfreezing the objects from the file
- (id)initWithCoder:(NSCoder *)aDecoder
{

keicoder

- (void)textViewDidChange:(UITextView *)textView {
    [self _showTextViewCaretPosition:textView];
}

- (void)textViewDidChangeSelection:(UITextView *)textView {
    [self _showTextViewCaretPosition:textView];
}


- (void)_showTextViewCaretPosition:(UITextView *)textView {

keicoder

//basic local notifications

#pragma mark - didFinishLaunchingWithOptions

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    if (debug==1) {NSLog(@"Running %@ '%@'", self.class, NSStringFromSelector(_cmd));}
    
    //local notifications test
    NSDate *date = [NSDate dateWithTimeIntervalSinceNow:10];

keicoder

//count items and update table views lable

//loops through the ChecklistItem objects from the items array 
//If the item object has its checked property set to NO, increment the local variable count by 1
//When looked at all the objects, return the value of this count to the caller

//Checklist.h
- (int)countUncheckedItems;

//Checklist.m

keicoder

//handleFirstTime

//in DataModel.m

- (void)registerDefaults {
	NSDictionary *dictionary = @{ 
		@"ChecklistIndex" : @-1, 
		@"FirstTime" : @YES
	};

keicoder

//using basic NSDictionary

//inside  DataModel.m
- (void)registerDefaults {
	NSDictionary *dictionary = @{ 
		@"ChecklistIndex" : @-1,
		@"FirstTime" : @YES //“FirstTime” acts as a boolean value because it’s either yes or no (true or false)
	};

	[[NSUserDefaults standardUserDefaults] registerDefaults:dictionary];

keicoder

//table view accessory-tapped delegate method

#pragma mark - Accessory-tapped 델리게이트 메소드

- (void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath
{
    if (debug==1) {NSLog(@"Running %@ '%@'", self.class, NSStringFromSelector(_cmd));}
    
    UINavigationController *navigationController = [self.storyboard instantiateViewControllerWithIdentifier:@"ListNavigationController"];
    

keicoder

//dataModel using plist file and save to documents directory

#import "DataModel.h"
#import "Checklist.h" //first time runs the app then create a new Checklist object

@implementation DataModel

#define debug 1

#pragma mark - 다큐먼트 디렉토리

keicoder

//delegate pattern 

//delegate pattern is commonly used to handle the following situation
//ex)
//screen A opens screen B and at some point screen B needs to communicate back to screen A, for example when it closes. 
//The solution is to make A a delegate of B so screen B can send its messages to A whenever it needs to.

//Screen A launches screen B and becomes its delegate
//The cool thing about the delegate pattern is that screen B doesn’t really know anything about screen A. 
//It just knows that some object is its delegate. Other than that, screen B doesn’t care who that is. Just like UITableView doesn’t really care about your view controller, only that it delivers table view cells when the table view asks for them. 

keicoder

//Xcode Console Debug Code

#define debug 1

if (debug==1) {NSLog(@"Running %@ '%@'", self.class, NSStringFromSelector(_cmd));}