У меня есть класс, чтобы выбрать изображение из галереи или камеры.Я открываю alertController и позволяет выбирать между галереей и камерой.Он также содержит делегата.Если я выберу картину из галереи, я обнаружил утечку памяти с помощью инструментов.Как я могу улучшить код, чтобы избежать утечки памяти?Спасибо!
class ImagePickerManager: NSObject, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
var imagePicker = UIImagePickerController()
weak var delegate: DelegatePhotohandler?
var viewController: UIViewController?
override init() {
super.init()
}
func pickImage<T:UIViewController>(viewController: T) {
self.viewController = viewController
let alertList = UIAlertController(title: NSLocalizedString("Load Picture", comment: "Picture alert Alertcontroller"), message: nil, preferredStyle: .actionSheet)
let cameraAction = UIAlertAction(title: "Camera", style: .default) {
UIAlertAction in self.openCamera()
alertList.dismiss(animated: true, completion: nil)
}
let galleryAction = UIAlertAction(title: "Gallery", style: .default) {
UIAlertAction in self.openGallery()
alertList.dismiss(animated: true, completion: nil)
}
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel) {
UIAlertAction in
alertList.dismiss(animated: true, completion: nil)
}
alertList.addAction(cameraAction)
alertList.addAction(galleryAction)
alertList.addAction(cancelAction)
viewController.present(alertList, animated: true, completion: nil)
}
private func openCamera() {
if(UIImagePickerController .isSourceTypeAvailable(.camera)) {
imagePicker.sourceType = .camera
imagePicker.delegate = self
self.viewController!.present(imagePicker, animated: true, completion: nil)
} else {
let warningAlert = UIAlertController(title: "Warning", message: "You do not have a camera", preferredStyle: .alert)
let cancelAction = UIAlertAction(title: "Okay", style: .cancel) {
UIAlertAction in
warningAlert.dismiss(animated: true, completion: nil)
}
warningAlert.addAction(cancelAction)
self.viewController!.present(warningAlert, animated: true, completion: nil)
}
}
private func openGallery() {
imagePicker.sourceType = .photoLibrary
imagePicker.delegate = self
self.viewController!.present(imagePicker, animated: true, completion: nil)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
picker.dismiss(animated: true, completion: nil)
guard let image = info[.originalImage] as? UIImage else {
print("Expected a dictionary containing an image, but was provided the following: \(info)")
return
}
delegate?.returnImage(image: image)
}
}