This sample app uses AVFoundation to take a Still Image in the background as soon as the app loads.
The app is updated for Xcode 8.2 & Swift 3
Updated in iOS SDK 10 :
This fucntion is called by the AVCapturePhotoOutput with AVCapturePhotoSettings as settings and AVCapturePhotoCaptureDelegate type of class as delegate
capturePhoto(with settings: AVCapturePhotoSettings, delegate: AVCapturePhotoCaptureDelegate)The delegate function on the image clicked is from which the image can be retrieved as Data
capture(_ captureOutput: AVCapturePhotoOutput, didFinishProcessingPhotoSampleBuffer photoSampleBuffer: CMSampleBuffer?, previewPhotoSampleBuffer: CMSampleBuffer?, resolvedSettings: AVCaptureResolvedPhotoSettings, bracketSettings: AVCaptureBracketedStillImageSettings?, error: Error?)