In The Brain of Paul Ardeleanu: What's new in iOS 4

What’s new in iOS4Paul Ardeleanu

@pardel

SkillsMatter - August 12th 2010

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What was missing?

Multitasking

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What’s new in iOS4?

Multitasking

Local Notifications

Game Center

New Frameworks & APIs

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1. Multitasking

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1. Multitasking ... of a different kind

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Multitasking

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Multitasking

Fast app switching

Task Completion

Background Audio

Navigation & Location tracking

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Fast App Switching

Running

Not running

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Fast App Switching

Running

Not running

Active

Inactive

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Fast App Switching

Running

Not running

Running

Not running

Background

Active

Inactive

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Fast App Switching

Running

Not running

Running

Not running

Background

Active

Inactive

Running

Suspended

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App Life CycleForegroundActive

Inactive

Not running

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Inactive

Not running

didFinishLaunchingWithOptions:

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Inactive

Not running

applicationDidBecomeActive:

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Inactive

Not running

applicationDidResignActive:

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Inactive

Not running

applicationDidTerminate:

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Inactive

Not running

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Inactive

Not running

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Inactive

BackgroundRunning

Suspended

Not running

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Inactive

BackgroundRunning

Suspended

Not running

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Inactive

BackgroundRunning

Suspended

Not running

applicationDidEnterBackground:

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Inactive

BackgroundRunning

Suspended

Not running

applicationDidEnterForeground:

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Inactive

BackgroundRunning

Suspended

Not running

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Inactive

BackgroundRunning

Suspended

Not running

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Inactive

BackgroundRunning

Suspended

Not running

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UIApplicationDelegate Callbacks

//// MyAppDelegate.m//

- (void)applicationWillResignActive:(UIApplication *)application

- (void)applicationDidEnterBackground:(UIApplication *)application

- (void)applicationWillEnterForeground:(UIApplication *)application

- (void)applicationDidBecomeActive:(UIApplication *)application

- (void)applicationWillTerminate:(UIApplication *)application

UIApplicationDidEnterBackgroundNotificationUIApplicationDidEnterForegroundNotification

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UIApplicationDelegate Callbacks

//// MyAppDelegate.m//

- (void)applicationWillResignActive:(UIApplication *)application

- (void)applicationDidEnterBackground:(UIApplication *)application

- (void)applicationWillEnterForeground:(UIApplication *)application

- (void)applicationDidBecomeActive:(UIApplication *)application

- (void)applicationWillTerminate:(UIApplication *)application

UIApplicationDidEnterBackgroundNotificationUIApplicationDidEnterForegroundNotification

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UIApplicationtypedef enum { UIApplicationStateActive, UIApplicationStateInactive, UIApplicationStateBackground} UIApplicationState;

@property(nonatomic,readonly) UIApplicationState applicationState

[[UIApplication sharedApplication] applicationState]

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Best practicesForegroundActive

Inactive

BackgroundRunning

Suspended

Not running

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Inactive

BackgroundRunning

Suspended

Not running

✦ save state✦ minimise memory usage✦ change the UI accordingly✦ stop Bonjour & networking✦ stop shared system data

access & GPU

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Inactive

BackgroundRunning

Suspended

Not running

✦ save state✦ minimise memory usage✦ change the UI accordingly✦ stop Bonjour & networking✦ stop shared system data

access & GPU

your app can be terminated at any time

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No Multitasking

UIApplicationExitsOnSuspend

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Inactive

BackgroundRunning

Suspended

Not running

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Inactive

BackgroundRunning

Suspended

Not running

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Inactive

BackgroundRunning

Suspended

Not running

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Inactive

BackgroundRunning

Suspended

Not running

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Inactive

BackgroundRunning

Suspended

Not running

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Background Services

Task completion

Background Audio

Background Location

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Task completionForegroundActive

Inactive

Background

Not running

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Inactive

BackgroundRunning

Not running

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Inactive

BackgroundRunning

Not running

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Inactive

BackgroundRunning

Suspended

Not running

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Inactive

BackgroundRunning

Not running

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Task completionUIApplication

- (UIBackgroundTaskIdentifier)beginBackgroundTaskWithExpirationHandler:(void(^)(void))handler;- (void)endBackgroundTask:(UIBackgroundTaskIdentifier)identifier;

@property(nonatomic,readonly) NSTimeInterval backgroundTimeRemaining;

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Task completionUIApplication

typedef NSUInteger UIBackgroundTaskIdentifier;

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Task completion

self.bgTaskId = [app beginBackgroundTaskWithExpirationHandler: ^{ [self stopLongTask];}];...[[UIApplication sharedApplication] endBackgroundTask:self.bgTaskId];

UIApplication

typedef NSUInteger UIBackgroundTaskIdentifier;

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Background Services

Task completion

Background Audio

Background Location

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Background Services

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Inactive

Background

Not running

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Inactive

BackgroundRunning

Not running

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Inactive

BackgroundRunning

Not running

AVAudioSession

AVAudioSessionDelegate

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Inactive

BackgroundRunning

Not running

AVAudioSession

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Inactive

BackgroundRunning

Suspended

Not running

beginInteruption

AVAudioSession

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Inactive

BackgroundRunning

Suspended

Not running

beginInteruption

AVAudioSession

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Inactive

BackgroundRunning

Suspended

Not running

Running

beginInteruption

AVAudioSession

endInteruption

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Inactive

BackgroundRunning

Suspended

Not running

Running

beginInteruption

AVAudioSession

endInterruptionWithFlags:

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Background Location Services

Turn by turn directions

Location tracking✦ Significant location changing✦ Region monitoring (iPhone4 only)

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locationManager = [[CLLocationManager alloc] init];locationManager.delegate = self;locationManager.desiredAccuracy = kCLLocationAccuracyBestForNavigation;[locationManager startUpdatingLocation];

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extern const CLLocationAccuracy kCLLocationAccuracyBestForNavigation;extern const CLLocationAccuracy kCLLocationAccuracyBest;extern const CLLocationAccuracy kCLLocationAccuracyNearestTenMeters;extern const CLLocationAccuracy kCLLocationAccuracyHundredMeters;extern const CLLocationAccuracy kCLLocationAccuracyKilometer;extern const CLLocationAccuracy kCLLocationAccuracyThreeKilometers;

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kCLLocationAccuracyBestForNavigationUse the highest possible accuracy and combine it with additional sensor data. This level of accuracy is intended for use in navigation applications that require precise position information at all times and are intended to be used only while the device is plugged in.

extern const CLLocationAccuracy kCLLocationAccuracyBestForNavigation;extern const CLLocationAccuracy kCLLocationAccuracyBest;extern const CLLocationAccuracy kCLLocationAccuracyNearestTenMeters;extern const CLLocationAccuracy kCLLocationAccuracyHundredMeters;extern const CLLocationAccuracy kCLLocationAccuracyKilometer;extern const CLLocationAccuracy kCLLocationAccuracyThreeKilometers;

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Location tracking

a) Significant location changing

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Location tracking

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Location tracking

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Location tracking

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Location tracking

locationManager = [[CLLocationManager alloc] init];locationManager.delegate = self;[locationManager startMonitoringSignificantLocationChanges];

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Location tracking

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation

locationManager = [[CLLocationManager alloc] init];locationManager.delegate = self;[locationManager startMonitoringSignificantLocationChanges];

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Location tracking

b) Region monitoring (iPhone4 only)

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Location tracking

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Location tracking

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Location tracking

locationManager = [[CLLocationManager alloc] init];locationManager.delegate = self;locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters;CLLocationCoordinate2D regionCenterCoordinate;tempCoordinate.latitude = 51.5245;tempCoordinate.longitude = -0.0995;

CLRegion *region = [[CLRegion alloc] initCircularRegionWithCenter:regionCenterCoordinate radius:10.0 identifier:@"Skills Matter"];[locationManager startMonitoringForRegion:region desiredAccuracy:kCLLocationAccuracyNearestTenMeters];

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Multitasking

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Multitasking

Fast app switching

Task Completion

Background Audio

Navigation & Location tracking

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2. Local Notifications

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Local notifications// check if the local notification class exists Class cls = NSClassFromString(@"UILocalNotification");if (cls != nil) {

// check if the device is supporting multitasking UIDevice* device = [UIDevice currentDevice]; if ([device respondsToSelector:@selector(isMultitaskingSupported)]) { UIApplication* app = [UIApplication sharedApplication]; UILocalNotification* alarm = [[[UILocalNotification alloc] init] autorelease]; if (alarm) { alarm.fireDate = [NSDate date]; alarm.timeZone = [NSTimeZone defaultTimeZone]; alarm.repeatInterval = 0; alarm.soundName = @"alert.caf"; alarm.alertBody = @"Ha ha"; [app scheduleLocalNotification:alarm]; } }

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Local notifications// check if the local notification class exists Class cls = NSClassFromString(@"UILocalNotification");if (cls != nil) {

// check if the device is supporting multitasking UIDevice* device = [UIDevice currentDevice]; if ([device respondsToSelector:@selector(isMultitaskingSupported)]) { UIApplication* app = [UIApplication sharedApplication]; UILocalNotification* alarm = [[[UILocalNotification alloc] init] autorelease]; if (alarm) { alarm.fireDate = [NSDate date]; alarm.timeZone = [NSTimeZone defaultTimeZone]; alarm.repeatInterval = 0; alarm.soundName = @"alert.caf"; alarm.alertBody = @"Ha ha"; [app scheduleLocalNotification:alarm]; } }

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3. iAd

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Nov 09 - Google acquires AdMob for $750 million in stock

Jan 10 - Apple acquires Quattro Wireless for $275 million

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CPM + CPC = eCPM

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CPM + CPC = eCPM

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CPM + CPC = eCPM

60% revenues

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iAd.frameworkADBannerView

@property(nonatomic, copy) NSSet *requiredContentSizeIdentifiers;@property (nonatomic, copy) NSString *currentContentSizeIdentifier;

@property(nonatomic, readonly) BOOL bannerLoaded;@property(nonatomic, readonly) BOOL bannerViewActionInProgress;

- (void)cancelBannerViewAction;

@property(nonatomic, assign) id<ADBannerViewDelegate> delegate;

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ADBannerContentSizeIdentifier320x50ADBannerContentSizeIdentifier480x32

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iAd.framework

ADBannerViewDelegate

ADBannerView

- (void)bannerViewDidLoadAd:(ADBannerView *)banner;

- (BOOL)bannerViewActionShouldBegin:(ADBannerView *)banner willLeaveApplication:(BOOL)willLeave;- (void)bannerViewActionDidFinish:(ADBannerView *)banner;

- (void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error;

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iAd.framework

ADBannerViewDelegate

ADBannerView

- (void)bannerViewDidLoadAd:(ADBannerView *)banner;

- (BOOL)bannerViewActionShouldBegin:(ADBannerView *)banner willLeaveApplication:(BOOL)willLeave;- (void)bannerViewActionDidFinish:(ADBannerView *)banner;

- (void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error;

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iAd JS

✦ Banner✦ Main advertising screen

HTML5 + CSS3

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4. Game Center

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Game Center

✦ Beta✦ Social gaming network✦ Leaderboards & Achievements

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5. New Frameworks & APIs

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Block Objects

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Block Objectsself.bgTaskId = [app beginBackgroundTaskWithExpirationHandler:^{ [self stopLongTask];}];

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Block Objectsself.bgTaskId = [app beginBackgroundTaskWithExpirationHandler:^{ [self stopLongTask];}];

an object with some code

respond to NSObject methods

available in C

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Blocks

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Blocks

returnType (^myBlockName) (argumentType) = ^(argumentType argumentName){ returnType x; ... return x;}

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Blocks

int (^myBlock) (int) = ^(int num) { return num * multiplier; }

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Blocks

int multiplier = 5;

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Blocks

int multiplier = 5;

myBlock(7);

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New Frameworks

Quick Look

Event Kit

Core Motion

Core Telephony

Data Protection

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Event Kit

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Event Kit

EKEventStore@property(nonatomic, readonly) NSArray *calendars@property(nonatomic, readonly) EKCalendar *defaultCalendarForNewEvents

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Event Kit

EKCalendar

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Event Kit

EKCalendartypedef enum { EKCalendarTypeLocal, EKCalendarTypeCalDAV, EKCalendarTypeExchange, EKCalendarTypeSubscription, EKCalendarTypeBirthday,} EKCalendarType;

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Event Kit

EKCalendar EKEventtypedef enum { EKCalendarTypeLocal, EKCalendarTypeCalDAV, EKCalendarTypeExchange, EKCalendarTypeSubscription, EKCalendarTypeBirthday,} EKCalendarType;

alarms -> EKAlarmorganizer, attendees -> EKParticipantrecurrenceRule -> EKRecurrenceRule

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New API’s

Block related methods

- (void)enumerateObjectsUsingBlock:(void (^)(id obj, NSUInteger idx, BOOL *stop))block

Photo Library Access

MapKit improvements

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iPhone & iPad Application Development Course

Sep 29th to Oct 1st

http://skillsmatter.com/course/os-mobile-server/iphone-ipad-application-development

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iPhone & iPad Application Development Course

Sep 29th to Oct 1st

http://skillsmatter.com/course/os-mobile-server/iphone-ipad-application-development

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PROGRAMME

Day 1: Introduction to iOS development I • The development environment • Objective C crash course • Foundation framework • Memory management • The iPhone Dev Center

Day 3: Advance Features I • Touch & Gestures • Camera & Photo Library access • Core Location • Event Kit • Core Motion • Web Services (inc. XML & JSON Parsers) • Threading • Localisation

Day 2: Introduction to iOS development II • Design patterns (MVC, Delegation, etc.) • Table views, Navigation, Tab bar • Data Persistence (Preferences, SQLite & Code Data) • Animation • Core Graphics

Day 4: Advance Features II • Documents Sharing • Multitasking • Local notifications • iPad Specific topics • Testing and Optimisation (Instruments) • Submitting your application to the App Store

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Thank you

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In The Brain of Paul Ardeleanu: What's new in iOS 4

Technology

Transcript of In The Brain of Paul Ardeleanu: What's new in iOS 4

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