formacion en movilidad: conceptos de desarrollo en ios (i)

CCRTViFormación en movilidad

Conceptos de desarrollo en iOS

1

LenguajeHerramientas

HerramientasDel simulador al dispositivo

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iOS 6.1Xcode 4.6

3

Objective-C

@interface Video : NSObject

- (void)play;- (void)pause;

@end

@implementation Video

- (void)play {}

@end

4

Objective-C

@interface Video : NSObject

- (void)play;- (void)pause;

@end

@implementation Video

- (void)play {}

@end

Incomplete implementation

5

Objective-C

[myVideo play];[myVideo pause];

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Objective-C

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[Video pause]: unrecognized selector sent to instance 0x8334620'

[myVideo play];[myVideo pause]; Thread 1: signal SIGABRT

7

Objective-C

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[Video pause]: unrecognized selector sent to instance 0x8334620'

[myVideo play];[myVideo pause]; Thread 1: signal SIGABRT

“un objeto puede enviar un mensaje sin temor a producir errores en tiempo de ejecución”

Wikipedia

8

Objective-C

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[Video pause]: unrecognized selector sent to instance 0x8334620'

[myVideo play];[myVideo pause]; Thread 1: signal SIGABRT

“un objeto puede enviar un mensaje sin temor a producir errores en tiempo de ejecución”

No en la runtime library de iOS

9

Objective-C

10

Objective-CInitializers

Video *myVideo = [[Video alloc] init];// Es equivalente a:Video *myVideo = [Video new];

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Objective-CInitializers

Video *myVideo = [[Video alloc] init];// Es equivalente a:Video *myVideo = [Video new];

Video *myVideo = [[Video alloc] initWithURL:theURL];

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Objective-CInitializers

Video *myVideo = [[Video alloc] init];// Es equivalente a:Video *myVideo = [Video new];

NSString *theURL = @"http://youtu.be/THERgYM8gBM";Video *myVideo = [[Video alloc] initWithURL:theURL];

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Objective-CInitializers

Video *myVideo = [[Video alloc] init];// Es equivalente a:Video *myVideo = [Video new];

NSString *theURL = @"http://youtu.be/THERgYM8gBM";Video *myVideo = [[Video alloc] initWithURL:theURL];

- (id)initWithURL:(NSString *)url {! self = [super init];! if(self) {! ! _url = url;! }! return self;}

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Objective-CProperties

Declaración

@interface Video : NSObject

@property NSString *title;@property NSString *url;

@end

15

Objective-CProperties

Modificadores

@interface Video : NSObject

@property NSString *title;@property (readonly) NSString *url;

- (void)assignURL:(NSString *)url;

@end

16

Objective-CProperties

Modificadores

#import "Video.h"

@implementation Video

- (void)assignURL:(NSString *)url { // validaciones...! self.url = url;}

@end

17

Objective-CProperties

Modificadores

#import "Video.h"

@implementation Video

- (void)assignURL:(NSString *)url { // validaciones...! self.url = url;}

@end

Assignment to readonly property

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Objective-CProperties

Extensiones

#import "Video.h"

@interface Video ()

@property (readwrite) NSString *url;

@end

@implementation Video

- (void)assignURL:(NSString *)url { // validaciones...! self.url = url;}

@end

19

Objective-CProperties

Modificadores cool

@interface Video : NSObject

@property (readonly) BOOL ready;

@end

if([myVideo ready]) {}

20

Objective-CProperties

Modificadores cool

@interface Video : NSObject

@property (readonly, getter = isReady) BOOL ready;

@end

if([myVideo isReady]) {}

21

Objective-CProperties

Atomicidad

@interface Video : NSObject

@property (nonatomic) NSObject *whatever;

@end

22

Objective-CProperties

strong & weak references

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Objective-CProperties

strong & weak references

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Objective-CProperties

strong & weak references

25

Objective-CProtocols

@protocol Playable

- (void)play;- (void)pause;

@optional

- (void)fastForward:(int)times;

@end

26

Objective-CProtocols

@interface Video : NSObject <Playable>@end

@implementation Video

#pragma mark - Playable

- (void)play {}

- (void)pause {}

- (void)fastForward:(int)times {}

@end

27

Objective-CProtocols

@interface PhotoSequence : NSObject <Playable>@end

@implementation PhotoSequence

#pragma mark - Playable

- (void)play {}

- (void)pause {}

@end

28

Objective-CProtocols

@interface PhotoSequence : NSObject <Playable>@end

@implementation PhotoSequence

#pragma mark - Playable

- (void)play {}

- (void)pause {}

@end

29

Objective-CBlocks

Tareas asíncronas

dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);

dispatch_async(queue, ^{ // Long running task});

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dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);

dispatch_async(queue, ^{ // Long running task});

Objective-CBlocks

Tareas asíncronas

31

dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);

dispatch_async(queue, ^{ // Long running task});

Objective-CBlocks

Tareas asíncronas

32

Xcode

33

XcodeCommand Line Tools

Instalación

34

RubyRuby Version Manager

Instalación$  export  LANG=en_US.UTF-­‐8

$  curl  -­‐L  https://get.rvm.io  |  bash  -­‐s  stable  -­‐-­‐autolibs=3  -­‐-­‐ruby

$  rvm  install  1.9.3

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Coffee Break!

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RubyRuby Version Manager

Instalación$  rvm  use  1.9.3-­‐p392

$  ruby  -­‐vruby  1.9.3p392  (2013-­‐02-­‐22  revision  39386)  [x86_64-­‐darwin12.3.0]

37

Ruby + XcodeCocoaPods

Instalación$  gem  install  cocoapods

$  pod  setup...Setup  completed  (read-­‐only  access)

$  echo  'platform  :ios'  >  Podfile

$  pod  install...[!]  From  now  on  use  `Workshop.xcworkspace`.

38

Xcode

⇧⌘N

Master-Detail Application

39

Xcode

Use Storyboards, Core Data, ARCand include Unit Tests

40

Xcode

Create local git repository for this project

try.github.com41

Xcode

42

XcodeSchemes & Targets

“An scheme defines a collection of targets to build, a configuration to use when building, and

a collection of tests to execute”

* Only one scheme can be active at a time

“A target specifies a product to build and contains the instructions for building the

product from a set of files in a project or workspace”

* A product can be an app or a static library

43

XcodeWorkspaces & Projects

“A workspace is a document that groups projects and other documents so you can

work on them together”* Workspaces provide implicit and explicit relationships among the

included projects and their targets

“A project is a repository for all the files, resources, and information required to build

one or more software products”

* Projects define default build settings for all their targets

44

XcodeRelación entre unidades de trabajo

Workspace

Project

Project

Target

Target

Target

Scheme

45

XcodePrimera ejecución

⌘R

46

XcodePrimera ejecución

App simulada

47

XcodePreparando para dispositivo

Firma del código

Code Signing Identity: Don’t Code Sign

48

XcodePreparando para dispositivo

Certificado de desarrollo

Request a Certificate From a Certificate Authority...

49

XcodePreparando para dispositivo

Certificado de desarrollo

Request is: Saved to disk50

XcodePreparando para dispositivo

Certificado de desarrollo

51

XcodePreparando para dispositivo

Certificado de desarrollo

52

XcodePreparando para dispositivo

Certificado de desarrollo

CER (certificado)+ CSR (clave privada)

P12 (PKCS#12)53

XcodePreparando para dispositivo

Certificado de desarrollo

CER (certificado)+ CSR (clave privada)

P12 (PKCS#12)54

XcodePreparando para dispositivo

Certificado de desarrollo

Certificado y clave privada

55

XcodePreparando para dispositivo

Certificado de desarrollo

File Format: Personal Information Exchange (.p12)

56

XcodePreparando para dispositivo

Certificado de desarrollo

57

XcodeGit

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Próxima sesión...

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