Slides for my talk on getting started with iOS and adding iOS 9-specific features to your native iOS and Xamarin.Forms apps.

1. Introduction to iOS… 9
Craig Dunn
Xamarin
@conceptdev

2. On the menu?
File New App
How it works
iOS 9
Configuration
UI design
C# code

4. File > New

5. iPad Multitasking
-‐ Adaptive layout
-‐ Size classes
-‐ Configuration:
+ LaunchScreen.storyboard
+ support all iPad
orientation options

6. How it works

7. Xamarin’s Unique Approach
iOS C# UI
Windows C# UI
Android C# UI
Shared C# Code
github.com/xamarinhq/app-‐acquaint

8. Under the Hood Bonnet
Native UI
Storyboards & XIBs
User Interface code (﴾C#)﴿
UIKit, MapKit,
CoreLocation
…
Shared C# Code
• Business Logic
• Database
• Web services
• File operations
custom
bindings
Mono (﴾.NET Framework)﴿
• System.Net
CocoaPods
Objective-‐C
NSUrlSession
SQLite
iOS
iOS C# UI
Windows C# UI
Android C# UI
Shared C# Code
Xamarin

9. System.Net
Choose the Mono managed or the native iOS
network stack for WebClient & HttpClient
*
*

10. Application Transport Security
-‐ HTTPS “just works”
-‐ HTTP exceptions
-‐ HTTP opt-‐out

11. Native Performance
Xamarin.iOS does full Ahead Of Time (﴾AOT)﴿ compilation
with LLVM to produce an ARM binary for Apple’s App Store.

12. Shine with iOS 9

13. iOS 9
-‐ UIStackView & Localization
-‐ Core Spotlight
-‐ NSUserActivity / Handoff
-‐ Universal linking
-‐ 3D Touch
+ Quick Actions

14. UIStackView

15. UIStackView
Horizontal & vertical orientation
Leading and Trailing
(﴾not Left and Right)﴿

16. UIStackView & Localization

17. Localization Configuration
<key>CFBundleLocalizations</key>
<array>
<string>de</string>
<string>es</string>
<string>ja</string>
<string>he</string>
<string>ar</string>
</array>
<key>CFBundleDevelopmentRegion</key>
<string>en</string>
Info.plist

18. Localized Content

19. Localized Content

20. Localization

21. Core Spotlight

22. Core Spotlight (﴾Search)﴿
public override void Index (Task t)
{
var attributeSet = new CSSearchableItemAttributeSet (UTType.Text);
attributeSet.Title = t.Name;
attributeSet.ContentDescription = t.Notes;
attributeSet.TextContent = t.Notes;
var dataItem = new CSSearchableItem (t.Id.ToString(), "co.conceptdev.to9o",
attributeSet);
}
// delete items
CSSearchableIndex.DefaultSearchableIndex.Delete (new string[] {t.Id.ToString()}, err => {})
// index all-at-once (for reference material)
var dataItems = new List<CSSearchableItem>();
foreach (var session in sessions)
{
Index (session);
}

23. Responding to Search
public override bool ContinueUserActivity (UIApplication application,
NSUserActivity userActivity,
UIApplicationRestorationHandler completionHandler)
{
// Take action based on the activity type
if (userActivity.ActivityType == CSSearchableItem.ActionType)
{
var uuid = userActivity.UserInfo.ObjectForKey (CSSearchableItem.ActivityIdentifier);
ContinueNavigation (); // custom implementation
}

24. NSUserActivity / Handoff

25. NSUserActivity / Handoff

26. Creating NSUserActivity for Handoff
<key>NSUserActivityTypes</key>
<array>
<string>my.custom.identifier.add</string>
<string>my.custom.identifier.edit</string>
</array>
Info.plist

27. Creating NSUserActivity for Handoff
var activity = new NSUserActivity ("my.custom.identifier.add")(;
activity.EligibleForSearch = false; // don’t use this _and_ CoreSpotlight
activity.EligibleForPublicIndexing = false;
activity.EligibleForHandoff = true;
activity.Title = "Todo Detail";
var attributeSet = new CoreSpotlight.CSSearchableItemAttributeSet ();
attributeSet.DisplayName = "Add Todo";
attributeSet.ContentDescription = NSBundle.MainBundle.LocalizedString ("(new)","");
activity.AddUserInfoEntries (NSDictionary.FromObjectAndKey(new NSString("0"),
ActivityKeys.Id));
activity.ContentAttributeSet = attributeSet;
activity.BecomeCurrent (); // ViewWillDisappear: don’t forget to ResignCurrent()
ViewController

28. Responding to NSUserActivity
public override bool ContinueUserActivity (UIApplication application,
NSUserActivity userActivity,
UIApplicationRestorationHandler completionHandler)
{
// Take action based on the activity type
if (userActivity.ActivityType == "my.custom.identifier.add")
{
var uuid = userActivity.UserInfo.ObjectForKey
(CSSearchableItem.ActivityIdentifier);
ContinueNavigation (); // custom implementation
};
}
AppDelegate

29. Universal Links
Deep link into your app
Great for search, mail-‐outs
https://evolve.xamarin.com/session/56f441a3de91c6253c277bf6

30. Set up Universal Links
https://evolve.xamarin.com/apple-‐app-‐site-‐association
{
"applinks": {
"apps": [],
"details": [
{
"appID": "XXXX421985.com.xamarin.evolve",
"paths": [ "/session/*" ]
}
]
}
}
Entitlements.plist
App ID
apple-‐app-‐site-‐association

31. Responding to Universal Links
public override bool ContinueUserActivity (UIApplication application,
NSUserActivity userActivity,
UIApplicationRestorationHandler completionHandler)
{
if (userActivity.ActivityType == NSUserActivityType.BrowsingWeb)
{
var data = userActivity.WebPageUrl.AbsoluteString;
if (string.IsNullOrWhiteSpace (data) || !data.Contains ("/session/"))
return true;
var id = data.Substring (data.LastIndexOf ("/", StringComparison.Ordinal) + 1);
ContinueNavigation (); // custom implementation
}
}
AppDelegate

32. 3D Touch Quick Actions
Info.plist

33. Responding to Quick Actions
public UIApplicationShortcutItem LaunchedShortcutItem { get; set; }
public override void OnActivated (UIApplication application)
{
HandleShortcutItem(LaunchedShortcutItem);
LaunchedShortcutItem = null;
}
public override void PerformActionForShortcutItem (UIApplication application,
UIApplicationShortcutItem shortcutItem, UIOperationHandler completionHandler)
{ // app already running
var handled = HandleShortcutItem (shortcutItem);
completionHandler (handled);
}
public bool HandleShortcutItem (UIApplicationShortcutItem shortcutItem)
{
// show required view controller
}
AppDelegate

34. Xamarin.Forms too!
Evolve app:
-‐ Core Spotlight
-‐ NSUserActivity
-‐ Universal Linking
-‐ 3D Touch
Quick Actions
EVOLVE APP!!

35. VISUAL STUDIO
one more thing…

36. Visual Studio on Windows Storyboards

37. Visual Studio on Windows iOS Simulator

38. Visual Studio on Windows USB Remoting

39. Sample Code
github.com/conceptdev/xamarin-‐ios-‐samples > Traveller (﴾iOS)﴿
github.com/conceptdev/xamarin-‐ios-‐samples > To9o (﴾iOS)﴿
github.com/xamarin/xamarin-‐forms-‐samples > Todo (﴾Xamarin.Forms)﴿
github.com/xamarinhq/app-‐evolve > Evolve (﴾Xamarin.Forms)﴿
github.com/nishanil/TouristAttractions > Android app (﴾@nishanil)﴿

40. Craig Dunn
Xamarin
@conceptdev
THANK YOU!