Selecting "camera" causes Terminated due to signal 9 - ios

Question

In iOS Swift 3.1 I'm trying to access the camera, the same way I have done successfully in other apps. However, in this one particular app, it always crashes on the self.present(imagePicker, animated: true, completion: nil) line. The message in the console is Message from debugger: Terminated due to signal 9. Does this usually signal a memory related error?
#IBAction func onChooseImageClick(_ sender: AnyObject) {
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.savedPhotosAlbum){
let imagePicker = UIImagePickerController()
imagePicker.delegate = self
//Create the AlertController and add Its action like button in Actionsheet
let actionSheetControllerForImage: UIAlertController = UIAlertController(title: "Please select", message: "Option to select", preferredStyle: .actionSheet)
let cancelActionButton: UIAlertAction = UIAlertAction(title: "Cancel", style: .cancel) { action -> Void in
print("Cancel")
}
actionSheetControllerForImage.addAction(cancelActionButton)
let cameraActionButton: UIAlertAction = UIAlertAction(title: "Camera", style: .default)
{ action -> Void in
print("Camera")
if(UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera)) {
imagePicker.sourceType = UIImagePickerControllerSourceType.camera
let mediaTypes:[String] = [kUTTypeImage as String]
imagePicker.mediaTypes = mediaTypes
imagePicker.allowsEditing = false
self.present(imagePicker, animated: true, completion: nil)
} else {
let alertController = UIAlertController(title: "error", message: "Camera not found!", preferredStyle: .alert)
let OKAction = UIAlertAction(title: "OK", style: .cancel) { action in
// ...
}
alertController.addAction(OKAction)
self.present(alertController, animated: true)
}
}
actionSheetControllerForImage.addAction(cameraActionButton)
let galleryActionButton: UIAlertAction = UIAlertAction(title: "Image Gallery", style: .default)
{ action -> Void in
imagePicker.sourceType = UIImagePickerControllerSourceType.savedPhotosAlbum;
imagePicker.allowsEditing = false
self.present(imagePicker, animated: true, completion: nil)
}
actionSheetControllerForImage.popoverPresentationController?.sourceView = self.view
actionSheetControllerForImage.addAction(galleryActionButton)
===> self.present(actionSheetControllerForImage, animated: true, completion: nil)
}
}

Answer 1

You need a string in your plist file that explains why your app need permission to use the camera. There's a great summary of these strings in the question at iOS 10 - Changes in asking permissions of Camera, microphone and Photo Library causing application to crash, with a list you can copy from in the answer at https://stackoverflow.com/a/40734360/968577
Without the required strings, your app will crash in this manner. However, the console output will explain what the problem is.

Answer 2

Try like this i hope it would be helpful!!
Add these two points in info.plist first
Privacy - Camera Usage Description
Privacy - Photo Library Usage Description
Add these two delegates in your class file
UIImagePickerControllerDelegate
UINavigationControllerDelegate
#IBAction func onclickImageAction(_ sender: Any){
print("onclickImageAction method called here")
let imagePicker = UIImagePickerController()
imagePicker.delegate = self
imagePicker.isEditing = false
let actionSheet = UIAlertController(title: "Select Profile Photo", message: "", preferredStyle: UIAlertControllerStyle.actionSheet)
let libButton = UIAlertAction(title: "Select photo from library", style: UIAlertActionStyle.default){ (libSelected) in
print("library selected")
imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary
self.present(imagePicker, animated: true, completion: nil)
}
actionSheet.addAction(libButton)
let cameraButton = UIAlertAction(title: "Take a picture", style: UIAlertActionStyle.default) { (camSelected) in
if (UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera))
{
imagePicker.sourceType = UIImagePickerControllerSourceType.camera
self.present(imagePicker, animated: true, completion: nil)
}
else
{
actionSheet.dismiss(animated: false, completion: nil)
let alert = UIAlertController(title: "Error", message: "There is no camera available", preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "Okay", style: .default, handler: { (alertAction) in
alert.dismiss(animated: true, completion: nil)
}))
}
}
actionSheet.addAction(cameraButton)
let cancelButton = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.cancel) { (cancelSelected) in
print("cancel selected")
}
actionSheet.addAction(cancelButton)
let albumButton = UIAlertAction(title: "Saved Album", style: UIAlertActionStyle.default) { (albumSelected) in
print("Album selected")
imagePicker.sourceType = UIImagePickerControllerSourceType.savedPhotosAlbum
self.present(imagePicker, animated: true, completion: nil)
}
actionSheet.addAction(albumButton)
self.present(actionSheet, animated: true, completion:nil)
}
Implement these delegate method
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any])
{if let PickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage
{
yourimageview.image = PickedImage
dismiss(animated: true, completion: nil)
}
}

Answer 3

I just added exit(0) when i opened the camera settings. It's working fine