keicoder

//make a property read-only to other objects but fully accessible to your own class


//.h file

//readonly
@property (nonatomic, readonly, strong) NSMutableArray *searchResults;


//.m file

keicoder

//iOS Internationalization using NSLocalizedString()

//1. use NSLocalizedString() (even if you don’t care about internationalization right away)
//2. open a Terminal, go into the folder that contains the actual source files
//3. type command :genstrings *.m -o en.lproj 
//4. above command add a new file called Localizable.strings in the en.lproj folder
//5. add Localizable.strings file to the project in Xcode (ex : Supporting Files group)
//6. in the File Inspector, add a localization for this file (in this case Dutch)
//7. Change the translations in the Localizable.strings

keicoder

//Adding a Background Image using backgroundColor property


- (void)viewDidLoad { 
	[super viewDidLoad];
	
	//make a “color” based on an image using backgroundColor property
	self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"bg_img"]];
}

keicoder

//UIKit Customization


//.h
- (void)customizeAppearance;


//.m
- (void)customizeAppearance
{  

keicoder

//iOS Simple TableView

//You have to wire up data Source and delegate to the tableView in the xib file

//ViewController.h

@interface ViewController : UIViewController <UITableViewDataSource, UITableViewDelegate>

@property (nonatomic, strong) NSMutableArray *tableData; // holds the table data (title)
@property (nonatomic, strong) NSMutableArray *tableDetailData; // holds the table data (detail text)

keicoder

//set background image of a UITableView
//ViewController.m

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    //Controlling the Background of a UITableView
    //setting an image as the background of UITableView through four steps
    

keicoder

//Core Data : enable SQL Debug mode and disable journaling mode (WorksWellOnIOS7)



//enable SQL Debug mode

//1. Product > Scheme > Edit Scheme ...

//2. Ensure Run (Your App) and the Arguments tab is selected

keicoder

//sample code
//CoreData : fetchRequest, sortDescriptor, filter using predicate, show resulting Array object using for loop

- (void)demo {
    if (debug==1) {NSLog(@"Running %@ '%@'", self.class, NSStringFromSelector(_cmd));}
    
    //데모 데이터
//    NSArray *newItemNames = [NSArray arrayWithObjects:
//                             @"Apples", @"Milk", @"Bread", @"Cheese", @"Sausages", @"Butter", @"Orange Juice", @"Cereal", @"Coffee", @"Eggs", @"Tomatoes", @"Fish", nil];
//    

keicoder

//Core Data Lightweight Migration & delete journal mode


//1. add a model version
//select current xcdatamodel -> Editor > Add Model Version -> accept new version name

//2. update data model
//select new xcdatamodel -> create a new entity -> select the new entity, create an attribute you want

//3. update current model version

keicoder

//Core Data Default Migration


//1. disable automatic model mapping (just recommended option)
//set the NSInferMappingModelAutomaticallyOption option to @NO
    NSDictionary *options = @{NSMigratePersistentStoresAutomaticallyOption:@YES,
                              NSInferMappingModelAutomaticallyOption:@NO,
                              NSSQLitePragmasOption: @{@"journal_mode": @"DELETE"}};