Conceitos e prática no desenvolvimento iOS

Desenvolvedor e instrutor (iOS, Android, Java e Ruby)

Quem sou eu?

@fabiopimentelgithub.com/fabiopimentel

Vamos programar?

Objective-C (OFICIAL)

Ruby - RubyMotion

C# - Xamarin

iOS MVC

Controller

Model View

iOS MVC

Controller

Model View

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iOS MVC

Controller

Model View

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iOS MVC

Controller

Model View

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Outlet

iOS MVC

Controller

Model View

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Outlet

Action

Opções para View

StoryBoard

Xib

Opções para View

1) StoryBoard2) Xib2) Programaticamente

Ciclo de Vida

ViewController

A tela já existe?

ViewController

A tela já existe?

viewWillAppear

Não

viewDidAppear

Tela visível

viewDidLoadFluxo

ViewController

A tela já existe?

Sim

viewWillAppear

Não

viewDidAppear

Tela visível

viewDidLoad

viewDidLoad

viewWillAppear

Tela visível

viewWillDisappear

Ciclo de vida - ViewController

viewDidAppear

viewDidDisappear

Tela não visível

Ciclo de Vida - App

Aplicação não está rodando

Usuário clica no ícone

da appapplication:didFinishLauchingWithOptions:

applicationDidBecomeActive:

Aplicação rodando

Usuário clica em Home, ou recebe

chamada telefônica/SMS

applicationWillResignActive:

applicationDidEnterBackground:

Aplicação em backgroung

Usuário clica no ícone

da appapplicationWillEnterForeground:

Ciclo de Vida - App

Aplicação não está rodando

Usuário clica no ícone

da appapplication:didFinishLauchingWithOptions:

applicationDidBecomeActive:

Aplicação rodando

Usuário clica em Home, ou recebe

chamada telefônica/SMS

applicationWillResignActive:

applicationDidEnterBackground:

Aplicação em backgroung

Usuário clica no ícone

da appapplicationWillEnterForeground:

Live Coding

First

Roun

d

Principal componente do iOS

TableViewhttps://developer.apple.com/library/ios/documentation/userexperience/conceptual/tableview_iphone/

AboutTableViewsiPhone/AboutTableViewsiPhone.html

UITableViewStyleGrouped

UITableViewStylePlain

Section 0

Section 1

Section 2

Section 3

Section 4

Row 0

Row 1

Row 0

Row 1

Row 2

NSIndexPath"The UIKit framework adds programming interfaces to the NSIndexPath class of the

Foundation framework to facilitate the identification of rows and sections in UITableView objects and the identification of items and sections in UICollectionView

objects."

https://developer.apple.com/library/ios/documentation/uikit/reference/NSIndexPath_UIKitAdditions/Reference/Reference.html

NSIndexPath

Row Section

Row 2

Section 2

NSIndexPath

UITableViewControllerhttps://developer.apple.com/library/ios/documentation/uikit/reference/UITableViewController_Class/

Reference/Reference.html

Métodos para configuração

– numberOfSectionsInTableView:

- tableView:numberOfRowsInSection:

– tableView:cellForRowAtIndexPath:

Trabalhando em Background

Opção 1

performSelectorInBackground:withObject:

performSelectonOnMainThread:withObject:waitUntilDone

Exemplo

-(IBAction)carregaLista:(UIButton *) botao !

{! [self performSelectorInBackground: @selector(buscaMotos) withObject: nil];!}

Exemplo

-(IBAction)carregaLista:(UIButton *) botao !

{! [self performSelectorInBackground: @selector(buscaMotos) withObject: nil];!

} -(void)buscaMotos!

{

//faz a comunicação com algum webservice

[self performSelectorOnMainThread @selector(atualizaTabela:) withObject: arrayDeDados waitUntilDone: NO];!

}

Exemplo-(IBAction)carregaLista:(UIButton *) botao !

{! [self performSelectorInBackground: @selector(buscaMotos) withObject: nil];!

} -(void)buscaMotos!

{

//faz a comunicação com algum webservice

[self performSelectorOnMainThread @selector(atualizaTabela:) withObject: nil waitUntilDone: NO];!

}!

-(void)atualizaTabela:(NSObject*) object!

{

! ! [self.tableView reloadData];!

}

Opção 2

NSOperationQueue

NSInvocationOperation ou NSBlockOperation

Exemplo-(IBAction)carregaLista:(UIButton *) botao { NSOperationQueue * queue = [[NSOperationQueue alloc]init]; NSInvocationOperation *operation = [[NSInvocationOperation alloc] initWithTarget: self selector: @selector(downloadMotos) object:nil]; ! [queue addOperation:operation]; } !-(void)downloadPosts{ //faz a comunicação com algum webservice! [self performSelectorOnMainThread @selector(atualizaTabela:) withObject: arrayDeDados waitUntilDone: NO]; !} !-(void)atualizaTabela:(NSObject*) object{ //... [self.tableView reloadData]; }

Opção 3

Grand Central Dispatch (GCD)

ExemploNSArray *images = @[@"http://example.com/image1.png", @"http://example.com/image2.png", @"http://example.com/image3.png", @"http://example.com/image4.png"]; !dispatch_queue_t imageQueue = dispatch_queue_create("Image Queue",NULL); !for (NSString *urlString in images) { dispatch_async(imageQueue, ^{ NSURL *url = [NSURL URLWithString:urlString]; NSData *imageData = [NSData dataWithContentsOfURL:url]; UIImage *image = [UIImage imageWithData:imageData]; ! NSUInteger imageIndex = [images indexOfObject:urlString]; UIImageView *imageVIew = (UIImageView *)[self.view viewWithTag:imageIndex]; if (!imageView) return; dispatch_async(dispatch_get_main_queue(), ^{ // Update the UI [imageVIew setImage:image]; }); }); }

Conexão com webservices

Opção 1

NSURLRequest e NSURLMutableRequest

NSURLConnection

Exemplo(GET)NSString * url = @“http://projetows.heroku.com/motos.json” !NSURLRequest *request = [NSURLRequest requestWithURL: [NSURL URLWithString: url] ]; ![NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler: ^(NSURLResponse *response, NSData *data, NSError *connectionError) { // manipula resposta } ];

Opção 2

!

NSURLSession (iOS 7)

Exemplo (GET)NSString * url = @“http://projetows.heroku.com/motos.json” !NSURLSession *session = [NSURLSession sharedSession];

[session dataTaskWithURL: [NSURL URLWithString: url]completionHandler:^(NSData *data, NSURLResponse *response, NSError *error)

{

//manipula resposta!

}

] resume];

Interpretando resultados

JSONprojetows.heroku.com/motos.json

[ { "marca":"Yamaha", "modelo":"R1", }, { "marca":"Honda", “modelo":"CBR 600 RR", } ]

Opção da Apple

NSJSONSerializationhttps://developer.apple.com/library/ios/documentation/ foundation/reference/nsjsonserialization_class

ExemploNSString *url = @“http://projetows.heroku.com/motos.json";!!NSData *jsonData = [NSData dataWithContentsOfURL: [NSURL URLWithString:url]];!!NSError *error;!NSArray *resultados = [NSJSONSerialization JSONObjectWithData: jsonData options:NSJSONReadingMutableContainers error:&error];!if(!error) {!! for(NSDictionary * moto in resultados){!! ! NSString *marca = [moto objectForKey:@"marca"];! ! ! NSString *modelo = [moto objectForKey:@"modelo"];! ! ! NSLog(@"Marca: %@, modelo: %@", marca, modelo);!! }!}!

Opções de terceiros

https://github.com/stig/json-framework/JSON Framework

https://github.com/TouchCode/TouchJSONTouchJSON

Agora basta juntar tudo?

https://github.com/AFNetworking/AFNetworking

Exemplo!NSString * url = @“projetows.heroku.com/motos.json”!AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];!![manager GET:url parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {!! !! self.json = responseObject;! ! for(NSDictionary * moto in self.json){! ! ! NSString *marca = [moto objectForKey:@"marca"];! ! ! NSString *modelo = [moto objectForKey:@"modelo"];! ! ! NSLog(@"Marca: %@, modelo: %@", marca, modelo);! ! }! } failure:^(AFHTTPRequestOperation *operation, NSError *error) {! NSLog(@"Error: %@", error);! ! }];!}!

Como usá-lo no projeto?

CocoaPodshttp://cocoapods.org/

Gerenciador de

dependências

Instalação

gem install cocoapods

Instalação

gem install cocoa-pods

Podfile

Podfile

platform :ios , '7.1'!!

pod 'AFNetworking', '> 2.0'

Instalaçãogem install cocoa-pods

Podfile

pod install

Saída(Terminal)Fabios-MacBook-Pro:MobileConf fabiopimentel$ pod install Analyzing dependencies Downloading dependencies Installing AFNetworking (2.2.4) Generating Pods project Integrating client project ![!] From now on use `MobileConf.xcworkspace`.

Estrutura do projeto

Live Coding

Second

Round

Mais bibliotecas …

TestesKiwi

https://github.com/kiwi-bdd/KiwiBDD

style

describe(@"Team", ^{ context(@"when newly created", ^{ it(@"should have a name", ^{ id team = [Team team]; [[team.name should] equal:@"Black Hawks"]; }); ! it(@"should have 11 players", ^{ id team = [Team team]; [[[team should] have:11] players]; }); }); });

Testes

KIFhttps://github.com/kif-framework/KIF

Acceptance Tests

Kiwihttps://github.com/kiwi-bdd/Kiwi

BDD style

KIF Acceptance Tests@implementation LoginTests !- (void)beforeEach { [tester navigateToLoginPage]; } !- (void)afterEach { [tester returnToLoggedOutHomeScreen]; } !- (void)testSuccessfulLogin { [tester enterText:@"user@example.com" intoViewWithAccessibilityLabel:@"Login User Name"]; [tester enterText:@"thisismypassword" intoViewWithAccessibilityLabel:@"Login Password"]; [tester tapViewWithAccessibilityLabel:@"Log In"]; ! // Verify that the login succeeded [tester waitForTappableViewWithAccessibilityLabel:@"Welcome"]; } !@end

Ainda mais…

https://www.testflightapp.com/

AppCode (IDE)

E agora?

http://www.caelum.com.br/curso-ios-iphone-ipad/

https://developer.apple.com/programs/ios/

Obrigado!@fabiopimentel