How to take picture automatically by programming in Swift? - ios

Question

I am developing in Swift with iPhone camera.
I using the following code to check the camera:
if UIImagePickerController.isSourceTypeAvailable(.Camera) {
let picker = UIImagePickerController()
picker.delegate = self
picker.sourceType = UIImagePickerControllerSourceType.Camera
picker.allowsEditing = true
self.presentViewController(picker, animated: true)
} else {
print("can't find camera")
}
}
And I use the following code to open the camera.
presentViewController(imagePicker, animated: true, completion: nil)
I have reference the following link and call takePicture() , but it seems did not working.
But I always need to manually take the picture by tapping the shutter button. Is programmatically taking the picture possible in Swift?
Thanks in advance.

Answer 1

1) Check if you have these delegates in your view controller class:
UIImagePickerControllerDelegate, UINavigationControllerDelegate
2) Check if your plist have the permissions with YES
Privacy - Photo Library Usage Description
Privacy - Camera Usage Description
If you want, I use this code (swift 3):
let imagePicker = UIImagePickerController()
imagePicker.sourceType = .photoLibrary
imagePicker.delegate = self
self.present(imagePicker, animated: true, completion: nil)
For camera, just change "photoLibrary"
imagePicker.sourceType = .camera
3) In order to get the picture, you must implement the delegate didFinishPickingMediaWithInfo:
extension YourViewController:
UIImagePickerControllerDelegate,
UINavigationControllerDelegate
{
func imagePickerController(
_ picker: UIImagePickerController,
didFinishPickingMediaWithInfo info: [String : Any])
{
imagePicker.dismiss(animated: true, completion: nil)
let image = info[UIImagePickerControllerOriginalImage] as? UIImage
print("picture taken: \(image)")
}
}

Answer 2

var imagePicker:UIImagePickerController = UIImagePickerController()
//Set delegate to imagePicker
imagePicker.delegate = self
//Allow user crop or not after take picture
imagePicker.allowsEditing = false
//set what you need to use "camera or photo library"
imagePicker.sourceType = .camera
//Switch flash camera
imagePicker.cameraFlashMode = .off
//Set camera Capture Mode photo or Video
imagePicker.cameraCaptureMode = .photo
//set camera front or rear
imagePicker.cameraDevice = .rear
//Present camera viewcontroller
self.present(imagePicker, animated: true, completion: nil)
and don't forget implement two protocol: UIImagePickerControllerDelegate,UINavigationControllerDelegate
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
if let imagePicked = info[UIImagePickerControllerOriginalImage] as? UIImage {
UIImageWriteToSavedPhotosAlbum(imagePicked, nil, nil, nil)
dismiss(animated: true, completion: nil)
}
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
dismiss(animated: true, completion: nil)
}

Answer 3

Because you want to take picture fully automatically, you don't need UIImagePickerController at all. Instead use AVFoundation directly.
This article will be very helpful: Camera Capture on iOS.