Cologne, 01.03.2012 Version 1.0

Ralf Rottmann | CTO

Facebook for iOS SDK 3.2 Status QuoFacebook and iOS

grandcentrix GmbH

A confusing landscape

Version 5.x of the iOS operating system knows nothing about Facebook.Version 6.x introduces an operating system level integration with Facebook.Behavior also depends on the native Facebook application being available on a device, or not.These varying scenarios are partially abstracted by the Facebook SDK for iOS – but not completely.

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Speaking of a fragmented environment...A confusing landscape

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iOS 6

In this scenario

‣ The Facebook SDK will authenticate the user using an OS level system dialog.

‣ Absolutely no app switching will occur, everything will happen smoothly inside your app.

‣ Sharing will leverage Apple’s system level share UI.

‣ The native Facebook app is not required. If it’s there, it simply gets ignored.This configuration arguably delivers the best overall user experience. Developers don’t have to write any UI related code. The Facebook SDK handles everything automatically.

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iOS 6 with Facebook connected on OS levelScenario 1: The ideal setup

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In this scenario

‣ The Facebook SDK will authenticate the user by switching to the native Facebook app, asking the user to confirm and switching back.

‣ Trying to share using Apple’s system level share UI will silently fail and the developer can react to this in a couple of ways:

‣ Force Apple’s system level share UI in which case the user is asked to connect her Facebook account on iOS level.

‣ Use the Facebook SDK to pop up the Facebook Feed Dialog in an in-app Web View.

‣ Provide her own user interface. A pretty solid clone of Apple’s system level share UI is available here: https://github.com/sakrist/FacebookSample.

While the Facebook SDK provides means to detect this situation, handling it appropriately is completely up to the developer.

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iOS 6 with Facebook not connected on OS level and the Facebook app installedScenario 2: The very popular setup

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In this scenario

‣ The Facebook SDK will authenticate the user by switching to Mobile Safari, asking the user to log into Facebook, confirm and switching back.

From here on onwards, Scenario 2 applies.

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iOS 6 with Facebook not connected on OS level and the Facebook app not installedScenario 3: Nothing configured. Nothing installed.

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iOS 5

In this scenario

‣ The Facebook SDK will authenticate the user by switching to the native Facebook app, asking the user to confirm and switching back.

‣ For sharing, the developer has two alternatives:

‣ Use the Facebook SDK to pop up the Facebook Feed Dialog in an in-app Web View.

‣ Provide her own user interface. A pretty solid clone of Apple’s iOS 6 sharing UI is available here: https://github.com/sakrist/FacebookSample.

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iOS 5 with Facebook and the Facebook app installedScenario 4: The very popular setup

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In this scenario

‣ The Facebook SDK will authenticate the user by switching to Mobile Safari, asking the user to log into Facebook, confirm and switching back.

From here on onwards, Scenario 4 applies.

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iOS 5 and the Facebook app not installedScenario 5: No Facebook app

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p. +49 221 677 860 20t. @ralff. http://www.facebook.com/grandcentrix

ralf.rottmann@grandcentrix.netRalf Rottmann