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iOS Developer Overview - DevWeek 2014
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So, you're a developer, but you have never worked with iOS? In this session, Ardeleanu will provide a head start on how to plan, build, debug and release iOS 7 apps. The talk will cover a wide range of topics, including: the App Store ecosystem; the nature of an app; iOS 7's new UI and how to migrate from iOS 6; interface design; dev tools (Xcode – IDE, Simulator, Instruments – docs, etc); design patterns; debugging and optimisation; App Store and ad-hoc distribution; and what makes an app successfully.
Paul ArdeleanuFollow
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iOS Developer Overview - DevWeek 2014
- iOS Application Development iOS Developer Overview Paul Ardeleanu
- Assumptions… You are: ‣ a developer of sorts… ‣ have no or little exposure to iOS ‣ want to learn enough to become ‘dangerous’
- The plan ‣ Why iOS? ‣ Tools ‣ Storyboarding ‣ Objective-C ‣ Design patterns ‣ Debug & Testing ‣ Ad-Hoc distribution ‣ Publishing in the app store
- iOS Application Development Why iOS?
- iOS Application Development Once upon a time…
- … there were phones http://www.flickr.com/photos/adrianblack/371301544/
- Then the iPhone happened…
- Before & after https://twitter.com/JoshHelfferich
- App Store
- Global Phone Market Units shipped / quarter © Asymco - used with permission
- Smartphone shipments © Asymco - used with permission
- © Asymco - used with permission
- iOS Application Development Developer tools
- Developer tools
- Xcode
- Xcode
- iOS Simulator
- Instruments
- Instruments
- CocoaPods.org
- CocoaPods.org
- Reveal
- Documentation
- Documentation
- Documentation
- Dash
- Dash
- Dash
- iOS Application Development Building great apps
- Building great apps ‣ Constraints ‣ small size ‣ limited hardware ‣ one screen at a time ‣ one application at a time * ‣ touch input ‣ Interaction ‣ gestures ‣ shake ‣ orientation ‣ audio switch, volume buttons ‣ home & power buttons
- List of features too many features? Filter Yes Application Definition Statement App features User journeys Wirefames Prototype
- Application Definition Statement “A concise, concrete declaration of the app’s main purpose and its intended audience.” https://developer.apple.com/library/ios/documentation/ UserExperience/Conceptual/MobileHIG/
- Solve real problems "An app must solve a user's problem clearly and elegantly." Eric Hope, User Experience Evangelist, Apple
- Delivery channels ‣ web app [dedicated] ‣ native app ‣ “hybrid” solutions
- iOS Application Development Storyboarding
- What is Storyboarding ‣ Design the “screens” that compose your app => scenes ‣ Visually define the navigation between the scenes => segues ‣ Introduced in: iOS 5 & Xcode 4.2
- Xcode 5 - default
- Xcode 4 - optional
- Main Storyboard
- A simple app
- Specialised View Controllers ‣ UITableViewController ‣ UINavigationController ‣ UITabBarController ‣ UICollectionView
- UITableViewController
- UINavigationController
- UITabBarController
- UIToolbar
- UICollectionView
- iOS 6 & 7
- iPhone 3.5 vs 4-inch
- iOS Application Development Objective-C
- What is Objective C ‣ Thin layer on top of C; strict superset of C ‣ Object-oriented programming language ‣ Inspired by SmallTalk ‣ Developed by Stepstone / NeXT Software / Apple ‣ The development language for Mac OSX & iOS devices
- Object-Oriented Programming a programming paradigm that uses "objects" ! myCar • Number of wheels • Number of seats • Colour • Engine size • Top speed • Drive • Brake • Turn Left • Beep • Fill with petrol MethodsProperties Data + Behaviour
- Vehicle class Interface .h Implementation .m Vehicle.h Vehicle.m @interface Vehicle { int wheels; int seats; } ! -‐ (void)drive; -‐ (void)setWheels:(int)n; ! @end #import "Vehicle.h" ! @implementation Vehicle ! -‐ (void)setWheels:(int)n { wheels = n; } ! -‐ (void)drive { … } ! @end
- Methods syntax -‐ (void)setWheels:(int)n; return type name argument type argument name type
- Multiple arguments -‐ (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions application:didFinishLaunchingWithOptions: The name of the method is:
- Multiple arguments + (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion; + (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations;
- Multiple arguments [UIView animateWithDuration:1.0 delay:0.3 options:UIViewAnimationOptionCurveEaseIn animations:^{ // animations } completion:^(BOOL finished) { // completion block } ]; + (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion;
- Properties @implementation Vehicle ! -‐ (int)wheels { return wheels; } ! -‐ (void)setWheels:(int)n { wheels = n; } ! @end @interface Vehicle : NSObject { int wheels; } ! -‐ (int)wheels; -‐ (void)setWheels:(int)n; ! @end @implementation Vehicle ! ! ! @end @interface Vehicle : NSObject { ! } ! @property int noWheels; ! @end int numberWheels; @synthesize numberWheels;
- Properties & dot notation Vehicle *myCar = [Vehicle new]; ! myCar.wheels = 5; ! myCar.wheels
- What is a method? typedef struct objc_selector *SEL; ! Vehicle *myCar = [Vehicle new]; ! [myCar drive]; objc_msgSend(myCar, @selector(drive))
- Sending a message -‐ (void)setWheels: (int)n; [myCar setWheels:4]; objc_msgSend(myCar, @selector(setWheels:), 4);
- Sending a message ! Vehicle *myCar = nil; ! [myCar drive]; myCar = ...; if ([myCar respondsToSelector:@selector(drive)]) { [myCar drive]; }
- Initialisers Vehicle *myCar = [Vehicle new]; -‐ (id)initWithWheels:(int)wheels { self = [super init]; if (nil != self) { // Custom initialization self.wheels = wheels; } return self; } Vehicle *myCar = [[Vehicle alloc] initWithWheels:4]; Vehicle *myCar = [[Vehicle alloc] init];
- InitialisersMultiple @interface Vehicle : NSObject ! @property int wheels; @property int seats; ! -‐ (id)initWithWheels:(int)wheels andSeats:(int)seats; -‐ (id)initWithWheels:(int)wheels; -‐ (id)initWithSeats:(int)seats; ! @end
- InitialisersMultiple -‐ (id)init { return [self initWithWheels:DefaultNumberWheels andSeats:DefaultNumberSeats]; } #define DefaultNumberWheels 4 #define DefaultNumberSeats 5 -‐ (id)initWithWheels:(int)wheels andSeats:(int)seats{ self = [super init]; if (nil != self) { self.wheels = wheels; self.seats = seats; } return self; } -‐ (id)initWithWheels:(int)wheels { return [self initWithWheels:wheels andSeats: ]; } -‐ (id)initWithNumberSeats:(int)seats { return [self initWithWheels:DefaultNumberWheels andSeats:seats]; } DefaultNumberSeats
- Inheritance @interface Truck : Vehicle ! ! ! ! ! ! ! ! ! ! ! @end @interface Vehicle : NSObject ! @property int wheels; @property int seats; ! -‐ (void)drive; ! @end -‐ (void)checkLoad; -‐ (void)loadWithWeight:(int)weight; -‐ (void)unload; { int maxWeight; } @property int currentWeight;
- Inheritance NSObject NSPredicateNSArray NSComparisonPredicate NSMutableArray UIResponder UIView UIWindow UIControl UIButton UIGestureRecognizer UIApplicationNSNumber NSValue
- instance class isa superclass superclass metaclass isa metaclass isa superclass NSObject superclass superclass nil metaclass isa superclass superclass
- Polymorphism & Dynamic typing Vehicle Truck ! - (void)drive Car ! - (void)drive id aVehicle; ! ... ! [aVehicle drive];
- id ‣ the generic object type ‣ can be used for object of any type ‣ the object class is determined at runtime (dynamic typing) Vehicle *aCar; Static typing id aCar; Dynamic typing
- Introspection NSObject - (BOOL)isKindOfClass:(Class)aClass; - (BOOL)isMemberOfClass:(Class)aClass; - (Class)superclass; - (Class)class; - (BOOL)respondsToSelector:(SEL)aSelector;
- Protocols -‐ (void)load; -‐ (void)unload; -‐ (float)getWeight; @interface Truck : Vehicle @end
- Protocols -‐ (void)load; -‐ (void)unload; -‐ (float)getWeight; @implementation Truck ! ! ! ! ! ! ! ! ! ! ! ! ! @end -‐ (void)load { ... } -‐ (void)unload { ... } -‐ (float)getWeight { ... } @interface Truck : Vehicle @end
- Protocols -‐ (void)load; -‐ (void)unload; -‐ (float)getWeight; @interface Truck : Vehicle @end @protocol VehicleLoading @end <VehicleLoading>
- Protocols -‐ (void)load; -‐ (void)unload; -‐ (float)getWeight; @interface Truck : Vehicle @end @protocol VehicleLoading @end <VehicleLoading> @implementation Truck ! ! ! ! ! ! ! ! ! ! ! ! ! @end -‐ (void)load { ... } -‐ (void)unload { ... } -‐ (float)getWeight { ... }
- Category @interface Vehicle : NSObject ! ... ! -‐ (void)drive; -‐ (void)brake; ! @end ! Vehicle *myCar = [Vehicle new]; [myCar steerLeft];
- Category @interface NSString : NSObject ! ! ! ! ! ! @end
- @interface NSString : NSObject ! ! ! ! ! ! @end Category - (NSUInteger)wordCount;
- Category #import "NSString.h" ! @interface NSString (H24Utils) ! -‐ (NSUInteger)wordCount; ! @end NSString+H24Utils.h NSString+H24Utils.m
- Category #import "NSString.h" ! @interface NSString (H24Utils) ! -‐ (NSUInteger)wordCount; ! @end NSString+H24Utils.h NSString+H24Utils.m #import "NSString+H24Utils.h" ! @implementation NSString (H24Utils) ! -‐ (NSUInteger)wordCount { … } ! @end
- Naming conventions Classes Objects camelCase with capitalised first letter (a.k.a. Pascal case) Prefixes HelloWorldViewController camelCase viewController, myCar NSArray, UIView
- BOOL data type typedef signed char BOOL; ! #define YES (BOOL)1 #define NO (BOOL)0
- Blocks void (^sayHello)(NSString *) = ^(NSString *name) { NSLog(@“Hello %@", name); }; NSString *sayHello = @"Hello World";
- Blocks void (^sayHello)(NSString *); ! sayHello = ^(NSString *name) { NSLog(@"Hello %@", name); }; void (^sayHello)(NSString *) = ^(NSString *name) { NSLog(@“Hello %@", name); };
- Blocks @interface Person : NSObject ! @property NSString *name; ! -‐ (void)welcomeUserWithBlock:(void (^)(NSString *))theBlock; ! @end @implementation Person ! … ! -‐ (void)welcomeUserWithBlock:(void (^)(NSString *))theBlock { theBlock(self.name); } ! @end
- Blocks void (^sayHello)(NSString *) = ^(NSString *name) { NSLog(@“Hello %@", name); }; Person *theUser = [[Person alloc] initWithName:@"Paul"]; [theUser welcomeUserWithBlock:^(NSString *name) { NSLog(@"Hello %@", name); }]; [theUser welcomeUserWithBlock:sayHello];
- Blocks Person *theUser = [[Person alloc] initWithName:@"Paul"]; [theUser welcomeUserWithBlock:^(NSString *name) { NSLog(@"Hello %@", name); }];
- Block scope ! ! Person *theUser = [[Person alloc] initWithName:@"Paul"]; ! [theUser welcomeUserWithBlock:^(NSString *name) { NSLog(@"Hello %@", name); }]; message Module09_02[8635:303] Hello Paul NSString *message = @"Hello %@";
- Block scope NSString *message = @"Hello %@"; ! ! ! ! ! ! Person *theUser = [[Person alloc] initWithName:@"Paul"]; ! [theUser welcomeUserWithBlock:^(NSString *name) { NSLog(@"Hello %@", name); }]; message ... ! if (morning) { message = @"Good morning %@"; } Module09_02[8693:303] Good morning Paul
- Example UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Hello" message:@"Are you sure?" delegate:self cancelButtonTitle:@"No" otherButtonTitles:@"Yes", nil]; [alert show]; - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex { ... }
- Example @interface UIAlertView (H24Blocks) ! ! + (UIAlertView*) alertViewWithTitle:(NSString*) title message:(NSString*) message cancelButtonTitle:(NSString*) cancelButtonTitle otherButtonTitles:(NSArray*) otherButtons onDismiss:(IndexBlock) dismissed onCancel:(EmptyBlock) cancelled; ! @end
- Example [UIAlertView alertViewWithTitle:@"Hello" message:@"Hello World" cancelButtonTitle:@"Cancel" otherButtonTitles:@[@"OK"] onDismiss:^(int buttonIndex) { NSLog(@"Dismissed"); } onCancel:^{ NSLog(@"Cancelled"); }];
- iOS Application Development Design Patterns
- Design Patterns ‣ Accessors Pattern ‣ allows access to an object properties through simple methods ‣Anonymous Type Pattern ‣ send message to objects of an uncertain (at compilation) type ‣2-stage Object Creation Pattern ‣ alloc + init = new ‣ allow custom initialisers ‣Outlets, targets & actions ‣ configuration of and interaction with UI elements
- MVC Model View Controller
- MV[C] Model View Controller
- [M]VC Model View Controller
- [M]VC Model View Controller !View Controller
- MVC
- MVC
- Decorator pattern ‣ add bevaviour to an object ‣ without affecting the behaviour of other objects from the same class
- Categories ‣ adds functionality to classes without the need to subclass ‣ group common methods and implement them across the relevant framework ‣ informal protocols (unimplemented methods) ‣ anonymous category (private methods)
- Delegation ‣ a delegate is an object that works together with its delegator to solve a problem ‣ a delegate adds/changes the behaviour of the delegator (avoids subclassing) ‣ loose coupling ‣ a delegate is usually referenced using the anonymous type @interface MyAppDelegate : NSObject <UIApplicationDelegate>
- Observer pattern ‣ enables communication between objects ‣ no coupling ‣ one object notifies another object (registered as ‘listener’) when a change occurs
- Notifications ‣ an object registers as observer ‣ when a notification is sent to the Notification Center, it is distributed to all listeners [NSNotificationCenter defaultCenter]
- Notifications [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(soSomething) name:@"H24CourseNotification" object:nil]; [[NSNotificationCenter defaultCenter] postNotificationName:@"H24CourseNotification" object:nil]; [[NSNotificationCenter defaultCenter] removeObserver:self];
- Key-Value Observing ‣ KVC - Key Value Coding ‣ KVO - Key Value Observing
- KVC @interface Vehicle : NSObject @end
- KVC @interface Vehicle : NSObject @end @property NSString *maker;
- KVC @interface Vehicle : NSObject @end myCar.maker [myCar maker] myCar.maker = @"Ford"; [myCar setMaker:@"Ford"]; @property NSString *maker;
- KVC @interface Vehicle : NSObject @end [myCar valueForKey:@"maker"]; [myCar setValue:@"Ford" forKey:@"maker"]; myCar.maker [myCar maker] myCar.maker = @"Ford"; [myCar setMaker:@"Ford"]; @property NSString *maker;
- KVC @interface Vehicle : NSObject @end @property User *owner; myCar.maker [myCar maker] myCar.maker = @"Ford"; [myCar setMaker:@"Ford"]; @property NSString *maker; [myCar valueForKey:@"maker"]; [myCar setValue:@"Ford" forKey:@"maker"];
- KVC @interface Vehicle : NSObject @end @property User *owner; [myCar valueForKeyPath:@"owner.firstName"] [myCar setValue:@"John" forKeyPath:@"owner.firstName"]; myCar.maker [myCar maker] myCar.maker = @"Ford"; [myCar setMaker:@"Ford"]; @property NSString *maker; [myCar valueForKey:@"maker"]; [myCar setValue:@"Ford" forKey:@"maker"];
- KVO [aVehicle addObserver:self forKeyPath:@"owner" options:NSKeyValueObservingOptionNew context:nil]; options:(NSKeyValueObservingOptionNew | NSKeyValueObservingOptionOld)
- KVO - (void)observeValueForKeyPath:(NSString *)keyPath " ofObject:(id)object " change:(NSDictionary *)change " context:(void *)context
- KVO [vehicle removeObserver:self forKeyPath:@"owner"];
- Key-Value Observing ‣ KVC - Key Value Coding ‣ KVO - Key Value Observing
- Facade pattern ‣ simplified interface to a larger body of code ‣ subsystems accessed through a well defined entry point ‣ allows subsystems to change without affecting the overall functionality
- UIImage + (UIImage *)imageWithContentsOfFile:(NSString *)path + (UIImage *)imageNamed:(NSString *)name
- Anatomy of an app #import <UIKit/UIKit.h> ! #import "AppDelegate.h" ! int main(int argc, char * argv[]) { @autoreleasepool { return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class])); } } main.m
- iOS Application Development App states
- Slide Hello24 Ltd. (c) 2014 App states 122 Active Inactive Running Suspende Running Not running Background
- Slide Hello24 Ltd. (c) 2014 No background 123
- Slide Hello24 Ltd. (c) 2014 App life cycle 124 Active Inactive Running Suspended iPhone OS 3 iOS 4 Running Not running Running Not running Background
- Slide Hello24 Ltd. (c) 2014 AppDelegate callbacks ‣ application:willFinishLaunchingWithOptions: ‣ application:didFinishLaunchingWithOptions: ‣ applicationDidBecomeActive: ‣ applicationWillResignActive: ‣ applicationDidEnterBackground: ‣ applicationWillEnterForeground: ‣ applicationWillTerminate: 125
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 126 Active Inactive Running Suspended
- Slide Hello24 Ltd. (c) 2014 App life cycle - app start 127 ForegroundActive Inactive BackgroundRunning Suspended Not running 1
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 128 Active Inactive Running Suspended willFinishLaunchingWithOptions: 1
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 129 Active Inactive Running Suspended 2 willFinishLaunchingWithOptions: 1
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 130 Active Inactive Running Suspended 2 willFinishLaunchingWithOptions: 1 didFinishLaunchingWithOptions:
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 131 Active Inactive Running Suspended 2 willFinishLaunchingWithOptions: 1 didFinishLaunchingWithOptions: applicationDidBecomeActive:
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle - inactive 132 Active Inactive Running Suspended
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 133 Active Inactive Running Suspended
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 134 Active Inactive Running Suspended applicationDidResignActive:
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 135 Active Inactive Running Suspended applicationDidResignActive:
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 136 Active Inactive Running Suspended applicationDidResignActive: applicationDidBecomeActive:
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle - background 137 Active Inactive Running Suspended
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 138 Active Inactive Running Suspended 1
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 139 Active Inactive Running Suspended 1 applicationDidResignActive:
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 140 Active Inactive Running Suspended 1 applicationDidResignActive: 2
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 141 Active Inactive Running Suspended 1 applicationDidResignActive: 2 applicationDidEnterBackground:
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 142 Active Inactive Running Suspended 1 applicationDidResignActive: 2 applicationDidEnterBackground: 7
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 143 Active Inactive Running Suspended 1 applicationDidResignActive: 2 applicationDidEnterBackground: 7 8
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 144 Active Inactive Running Suspended 1 applicationDidResignActive: 2 applicationDidEnterBackground: 7 8 9
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 145 Active Inactive Running Suspended 1 applicationDidResignActive: 2 applicationDidEnterBackground: 7 8 9 applicationDidEnterForeground:
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 146 Active Inactive Running Suspended 1 applicationDidResignActive: 2 applicationDidEnterBackground: 7 8 9 10 applicationDidEnterForeground:
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 147 Active Inactive Running Suspended 1 applicationDidResignActive: 2 applicationDidEnterBackground: 7 8 9 10 applicationDidEnterForeground: applicationDidBecomeActive:
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle - terminate 148 Active Inactive Running Suspended
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 149 Active Inactive Running Suspended
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 150 Active Inactive Running Suspended
- Slide Hello24 Ltd. (c) 2014 Foreground Background Not running App life cycle 151 Active Inactive Running Suspended applicationWillTerminate:
- iOS Application Development Debug & Testing
- Instruments
- Instruments - Leaks
- Instruments - Allocations
- Instruments - Zombies
- Instruments - Time Profiler
- Instruments
- Network Link Conditioner
- Network Link Conditioner
- Network Link Conditioner on device
- Pony Debugger
- Pony Debugger [16:04:17] paul@Pro2x:project1 [502] $ ponyd serve --listen-interface=127.0.0.1 PonyGateway starting. Listening on 127.0.0.1:9000 [17:14:22] paul@Pro2x:MyPony [516] $ pod install Setting up CocoaPods master repo Setup completed (read-only access) Analyzing dependencies Downloading dependencies Installing PonyDebugger (0.3.1) Installing SocketRocket (0.3.1-beta2) Generating Pods project Integrating client project ! [!] From now on use `MyPony.xcworkspace`. [deprecated] I18n.enforce_available_locales will default to true in the future. If you really want to skip validation of your locale you can set I18n.enforce_available_locales = false to avoid this message.
- Pony Debugger PDDebugger *debugger = [PDDebugger defaultInstance]; [debugger connectToURL:[NSURL URLWithString:@"ws://127.0.0.1:9000/device"]]; [debugger forwardAllNetworkTraffic]; [debugger enableCoreDataDebugging]; [debugger addManagedObjectContext:self.managedObjectContext withName:@"MyPony"]; [debugger enableViewHierarchyDebugging]; [debugger enableRemoteLogging];
- Pony Debugger
- Pony Debugger
- Reveal
- iOS Application Development Ad-Hoc distribution
- TestFlight
- TestFlight
- TestFlight
- TestFlight
- HockeyApp
- HockeyApp
- HockeyApp
- iOS Application Development Publishing
- iTunes Connect
- New App
- Pricing Matrix
- Categories
- App Rating
- Review http://reviewtimes.shinydevelopment.com/
- Ready for sale!
- Newsstand apps
- Newsstand apps
- iAd
- iAd
- iAd
- iOS Application Development What is an app?
- What is an app? ‣ A package that is installed on a device ‣ Runs in a sandboxed environment ‣ Has limited access to system resources ‣ The limits can change over time ‣ Can retrieve remote information (when connection available) ‣ Can run in background
- The apps
- The apps
- The IPA
- The App
- The plan ‣ Why iOS? ‣ Tools ‣ Storyboarding ‣ Objective-C ‣ Design patterns ‣ Debug & Testing ‣ Ad-Hoc distribution ‣ Publishing in the app store
- Thank you! @pardel ! hello24.com paul@hello24.com
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