white screen after present an UIImagePickerController - ios

Question

I'm presenting an UIImagePickerController to take a photo, the problem is if I take a photo, or cancel the UIImagePickerController I'll return on a white screen and not on my previous ViewController. Only my navigation bar still here. If I click to an other view (with the navigation bar) it's ok, and if I return on the tab where the UIImagePickerController is called it still white.
let picker = UIImagePickerController();
picker.delegate = self;
picker.mediaTypes = [swiftString];
picker.allowsEditing = true
picker.sourceType = UIImagePickerControllerSourceType.camera;
picker.cameraCaptureMode = .photo
self.present(picker, animated:true, completion:nil);
dismiss :
picker.dismiss(animated: true, completion:nil);
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
picker.dismiss(animated: true, completion:nil);
}
If someone have an idea thank's !
Update :
White screen appears always when i call a view with present method. So i think it's conflict with the navigation controller (hierarchy...)
This solve my problem :
guard let appDelegate = UIApplication.shared.delegate as? AppDelegate else {return}
appDelegate.navigationController.present(picker, animated: true, completion: nil)
If someone have an other alternative to solve it !

Answer 1

Use picker.modalPresentationStyle = UIModalPresentationStyle.OverCurrentContext before presenting the imagepicker.

Answer 2

Here's the code I use for the camera:
func openCameraApp() {
if UIImagePickerController.availableCaptureModes(for: .rear) != nil {
picker.allowsEditing = false
picker.sourceType = UIImagePickerControllerSourceType.camera
picker.cameraCaptureMode = .photo
picker.modalPresentationStyle = .fullScreen
present(picker,
animated: true,
completion: nil)
} else {
noCamera()
}
}
func noCamera(){
let alertVC = UIAlertController(
title: "No Camera",
message: "Sorry, this device has no camera",
preferredStyle: .alert)
let okAction = UIAlertAction(
title: "OK",
style:.default,
handler: nil)
alertVC.addAction(okAction)
present(
alertVC,
animated: true,
completion: nil)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
let chosenImage = info[UIImagePickerControllerOriginalImage] as! UIImage // do you have this line in your code?
image = chosenImage
self.performSegue(withIdentifier: "ShowEditView", sender: self)
dismiss(animated: true, completion: nil)
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
dismiss(animated: false, completion: nil)
}
I notice a couple of things different.
You set .allowsEditing to true. I don't believe that is making a difference.
I'm checking for a camera, but you probably didn't put that code in your question.
I'm setting .modalPresentationStyle to full screen. This could be your issue.
I don't see the imagePickerController(picker: didFinishPickingMediaWithInfo) call. But since it shouldn't build, that definitely isn't the issue.
Inside that call I unwrap the image from info. I believe this is your issue. I've placed a comment on that specific line, asking you to check for this.
Finally, I'm executing a segue to another view controller. (My app is basically a "select" then "edit".)

Answer 3

Set the .modalPresentationStyle to fullScreen