Picking an image from your Facebook photos in iOS
Apple provides a convinient class, UIImagePickerController, that easily allows your app to display a user interface to pick an image from the photo library. There are countless apps out there that utilize this class. Since this class manages all the user interactions, end-users of the apps that use it will find consistency when picking an image from photo library. Facebook iOS app, WhatsApp text messenger, Messages and Tweetbot are just a few popular apps that leverage this class. It’d be great had Apple provided a similar class for picking a photo from a Facebook account.