Selecting "camera" causes Terminated due to signal 9

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)
    }
}

You need a string in your plist file that explains why your app need permission to use the camera. See http://stackoverflow.com/questions/38498275/ios-10-changes-in-asking-permissions-of-camera-microphone-and-photo-library-c for details about these strings. — Gary Makin, Apr 23 '17 at 05:27
@GaryMakin I thought I had that in my plist, but I guess I was looking at the "Library" one instead. That fixed the problem. Many thanks! — Lastmboy, Apr 23 '17 at 05:32
@GaryMakin, did you want to include your solution as an answer? — Lastmboy, Apr 24 '17 at 16:28

score 3 · Accepted Answer · edited May 23 '17 at 12:09

3

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.

edited May 23 '17 at 12:09

Community

1
1

answered Apr 25 '17 at 01:10

Gary Makin

3,109
1
19
27

I just added exit(0) when i opened the camera settings. It's working fine – HariKarthick Oct 12 '17 at 10:40

score 0 · Answer 2 · answered Apr 23 '17 at 06:40

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)   
        }
    }

score 0 · Answer 3 · answered Oct 12 '17 at 10:39

0

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

answered Oct 12 '17 at 10:39

HariKarthick

1,369
1
19
47

Selecting "camera" causes Terminated due to signal 9

3 Answers3