The World Wide Developer Conference (WWDC) 2015 took place in San Francisco with attendees from over 70 countries, primarily featuring first-time attendees. Key announcements included updates on OS X El Capitan, iOS 9, and watchOS 2, highlighting new features such as multitasking on iPad, advanced app capabilities, and improved graphics performance. Significant enhancements in development tools, particularly Xcode 7 and Swift 2, were also showcased, emphasizing app optimization and testing advancements.

1. World Wide Developer Conference 2015
San Francisco, CA, USA
Burcu GENECİ
Date(10/07/2015)

2. World Wide Developer Conference 2015
2
• Hosted in the Moscone Center for the 26th year.
• Attendees from over 70 countries.
• 80% are first-time attendees.
• Presented at more than 100 conference sessions and 150 labs.
• 350 student scholarship winners.
• 1000+ Apple Engineers.

3. Agenda
• New versions of OS, IOS and WatchOS
• Multitasking in iPad on iOS9
• App Thinning
• XCode7 – New Features
• Advanced Unit Testing and UI Test Recording
• What’s new in Auto layout
• Swift 2

4. 4
Important News from Apple - EL CAPITAIN
• SPOTLIGHT as a Search Engine..
The new search system allows users to resize and move the Spotlight window,
which presents new types of content.
Sports scores and other Siri data will be supported, and natural language search
allows users to track down mail messages and documents easily. The search
upgrades are also available in apps like Mail and Finder.
• METAL for Mac..
50% improvements in rendering with 40% less CPU processing power required
for graphics. Metal on OS X El Capitan offers better battery life and improved
graphics performance for both games and professional apps.
• SAFARI
A new pinned feature enables users to keep websites listed at the top of Safari,
similar to a bookmarks bar. The browser also gains a universal mute feature that
allows users to mute a website that is playing music, even with several tabs
open.
• Call out your cursor.
• SPLITVIEW

5. 5
EL CAPITAIN
SPLITVIEW

6. Important News from Apple – IOS9
6
• SEARCH (Siri Suggestions)
• App History
• Content indexing
• Web markup
• SIRI
Siri can do a lot more in iOS 9 with contextual awareness. If you ask Siri to
"Remind me to do this" when looking at a request you've received in the
Messages app, Siri will understand what you mean by "this" and will add the
event.
• SPLITVIEW for iPad
• Safari View Controller
Created with the goal to let developers stop writing miniature web browsers,
Safari View Controller enables apps to delegate the responsibility of showing web
content to Safari itself, avoiding the need to write custom code for built-in
browsers.
• Low Power mode
iOS will shut down background activity and reduce performance to get you
as much as three extra hours before the battery finally goes kaput.
• HTTPS exclusively
• NOTES

7. IOS9 - NOTES
7

8. Important News from Apple - WATCHOS 2
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• NATIVE APPS
Apps now run natively for better performance.
With watchOS 2, many apps are native apps, which means they run entirely
on your Apple Watch. So they load more quickly and have even
greater capabilities.
• Apps can now take advantage of features like the Taptic Engine,
Digital Crown, accelerometer, heart rate sensor, speaker, and microphone.
• Use more cards with Apple Pay.
• WATCHCONNECTIVITY
WatchConnectivity saves battery life by allowing the WatchKit extension to
transfer new information for the iPhone app to use when it’s next launched,
allowing for seamless file transfers between the Apple Watch app and
iPhone app. Using NSURLSession, Apple Watch can now communicate
directly with known wifi hotspots using the new Tetherless Wi-Fi feature in
watchOS 2.
• COMPLICATIONS
• TIMETRAVEL

9. Important News from Apple – WATCHOS 2
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COMPLICATIONS

10. Important News from Apple – WATCHOS 2
10
TIME TRAVEL

11. Important News from Apple – Platform State of Unions
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12. Multitasking in iPad on iOS9

13. Multitasking in iPad on iOS9
How to make your application resizable?
SizeClasses + Autolayout
How to manage this environment?
• Memory Management
• Optimize Your App  Use Instruments
• Fix Memory Leaks  Track memory warnings
• Fix inefficient algorithms
NSPurgableData ..
NSCache
Working Set
Memory
To participate effectively in this environment, an iOS 9 developer must carefully tune their app’s resource
usage. If an app consumes too much time per frame, screen updates can fall below 60 frames per
second. Under memory pressure, the system terminates the app consuming the most memory.
• New Features
• Slide Over
• Picture in Picture
• Split View

14. App Thinning in Xcode
Bitcode App Slicing On Demand
Resources

15. App Thinning in Xcode

16. App Thinning in Xcode

17. App Thinning in Xcode

18. App Thinning in Xcode

19. App Thinning in Xcode

20. App Thinning in Xcode

21. App Thinning in Xcode

22. App Thinning in Xcode

23. App Thinning in Xcode – App Slicing

24. App Thinning in Xcode – App Slicing

25. App Thinning in Xcode – App Slicing
WHAT TO DO?
• 1x,2x,3x artwork
• Use Asset Catalog
• Use Device Traits (Screen Resolution, Device Family)
HOW TO TEST?
ENABLE_ONLY_ACTIVE_RESOURCES
HOW TO DISTRIBUTE?
Thin Distribution is supported in AppStore Purchase, TestFlight,
Adhoc/Enterprise Distributions.

26. App Thinning in Xcode – App Slicing
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HOW TO DISTRIBUTE FOR TESTING?

27. App Thinning in Xcode – App Slicing
27
HOW TO DISTRIBUTE?

28. App Thinning in Xcode – App Slicing
HOW TO DISTRIBUTE?

29. App Thinning in Xcode- On Demand Resources

30. App Thinning in Xcode- On Demand Resources

31. App Thinning in Xcode- On Demand Resources

32. App Thinning in Xcode- On Demand Resources
• Asset packs are built by Xcode
Can contain any non-executable assets
• Hosted by the App Store
Downloaded when needed
• Reclaimed as appropriate
Device-thinned just like the other content

33. Advanced Unit Testing and UI Test Recording
• XCTest and Accesibility work together
• New UI Test feature
• UI Recording

34. Advanced Unit Testing and UI Test Recording
XCTest
Xcode’stesting framework
Test casesubclasses
Test methods
Assertions
Integrated with Xcode
CIviaXcodeServer and xcodebuild

35. Advanced Unit Testing and UI Test Recording
CoreTechnologies
+
AccessibilityXCTest

36. Advanced Unit Testing and UI Test Recording

37. Advanced Unit Testing and UI Test Recording
XCUIApplication
Proxy for the tested application
Launch
Starting point for finding elements
XCUIElement
Proxy for elements in application
Types
Identifiers
XCUIElementQuery
Queries resolve to collections of accessible elements
Number of matches:count
Specify by identifier: subscripting
Specify by index:elementAtIndex()
descendantsMatchingType()
childrenMatchingType()
containingType()
Element Uniqueness
Element Hierachy

38. Advanced Unit Testing and UI Test Recording
XCUIElementQuery
descendantsMatchingType()
childrenMatchingType()
containingType()
Event Synthesis
Simulate user interaction on elements
APIs are platform-specific
button.click() // OS X
button.tap() // iOS
textField.typeText(“Hello, World!”) // iOS & OS X
Assertions
•XCTAssertEqual()

39. Advanced Unit Testing and UI Test Recording

40. Advanced Unit Testing and UI Test Recording

41. What’s new in Auto layout
• StackView
• Horizontal & Vertical Layouts
• 3D View Debugger
• Activate and deactiveConstraints

42. What’s new in Auto layout
• StackView
• Horizontal & Vertical Layouts (Alignment)

43. What’s new in Auto layout
• StackView
• Horizontal & Vertical Layouts (Alignment)

44. What’s new in Auto layout
• StackView
• Horizontal & Vertical Layouts (Alignment & Distribution)

45. What’s new in Auto layout
• StackView
• Horizontal & Vertical Layouts (Alignment)

46. XCode7 – New Features
• Swift Migrator
• Playgrounds
• Debugging and Profiling Tools
• Address Sanitizier
• Crash Logs

47. XCode7 – Swift Migrator

48. XCode7 – Debugging and Profiling Tools
• Debugging
• View Debuger
• Exception Breakpoint
• Advance Breakpoint Actions
• Energy Impact
• CPU
• Network
• Location
• Background

49. XCode7 – Playgrounds
• Get more information about results
• Adding explanation to play ground.
• Protocol Extensions

50. XCode7 – Playgrounds

51. XCode7 – Address Sanitizer
• Analyze Memory Corruption
• EXC_BAD_ACCESS
• Integrated into Debug Navigator
• Edit Scheme – Diagnotics —> Enable Address Sanitizer
• Edit Scheme – Test – Diagnostics —> Enable Address Sanitizer
• Shadow Mapping

52. XCode7 – Crash Logs
• Fully Symbolicated
• App Store and Test Flight
• Full Xcode Integration

53. XCode7 – Crash Logs

54. Swift 2
• Error Handling
• Availability Check
• Testability
• Typed Collections

55. Swift 2
• Error Handling

56. Swift 2
• Availability Check
Old Aproach
Better Approach

57. Swift 2
• Testability
@testable
import MyApp
• Typed Collections

58. 58

59. 59
• WWDC 2015 Keynote
• WWDC 2015 Sessions
• https://developer.apple.com/library/prerelease/ios/documentation/IDEs/Conceptual/AppDistri
butionGuide/AppThinning/AppThinning.html
• https://developer.apple.com/library/prerelease/ios/documentation/IDEs/Conceptual/AppDistri
butionGuide/AnalyzingCrashReports/AnalyzingCrashReports.html
REFERENCES