Ios 如何在Swift中裁剪图像？

您好，我正在使用UIImagePicker拍摄图像，但在拍摄图像时，我希望裁剪该图像。。怎么做

我可以从gallery中选择图像到imageview，但在选择图像时，我需要裁剪图像

我尝试了以下代码：

 class AddNewEventViewController: UIViewController, UIPickerViewDelegate,UIImagePickerControllerDelegate, UIPickerViewDataSource,UINavigationControllerDelegate {

@IBOutlet weak var imgPick: UIImageView!

var picker = UIImagePickerController()

 override func viewDidLoad() {
    super.viewDidLoad()
    hideKeyboardWhenTappedAround()
    picker.delegate = self
    picker.allowsEditing = true
}
  @IBAction func addProfileBtnAction(_ sender: Any) {
    let actionSheetController: UIAlertController = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
    actionSheetController.popoverPresentationController?.sourceView = self.contentView
    let cancelAction: UIAlertAction = UIAlertAction(title: "Cancel", style: .cancel) { action -> Void in
    }
    actionSheetController.addAction(cancelAction)
    let takePictureAction: UIAlertAction = UIAlertAction(title: "TakePhoto", style: .default) { action -> Void in
        self.openCameraPicker()
    }
    actionSheetController.addAction(takePictureAction)
    let choosePictureAction: UIAlertAction = UIAlertAction(title: "ChooseFromLibrary", style: .default) { action -> Void in
        self.openPhotoGallery()
    }
    actionSheetController.addAction(choosePictureAction)
    //Present the
    self.present(actionSheetController, animated: true, completion: nil)
}
func openCameraPicker() {
    picker.sourceType = UIImagePickerController.SourceType.camera
    picker.cameraCaptureMode = .photo
    picker.allowsEditing = true
    picker.modalPresentationStyle = .fullScreen
    present(picker,animated: true,completion: nil)
}
func openPhotoGallery() {
    picker.sourceType = .photoLibrary
    picker.allowsEditing = true

    picker.mediaTypes = UIImagePickerController.availableMediaTypes(for: .photoLibrary)!
    present(picker, animated: true, completion: nil)
}
// MARK: - UIImagePickerControllerDelegate Methods
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    if let img = info[UIImagePickerController.InfoKey.editedImage] as? UIImage{
        imgPick.image = img
    }
    else if let image = info[UIImagePickerController.InfoKey.originalImage] as? UIImage {
        self.imgPick.image = image
    }
    dismiss(animated: true, completion: nil)
}

}

像这样我得到。。没有收成

在这里，我得到的图像从画廊到imageview，但没有得到作物

---

如何裁剪图像，请帮助我修改代码。

我检查了您的代码，发现您缺少设置

UIImagePickerController的
委托

我现在尝试使用
photoLibrary

class ImagePickerViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    @IBOutlet var imageView:UIImageView!

    override func viewDidLoad() {
        super.viewDidLoad()

        self.openPhotoGallery()
    }

    func openPhotoGallery() {

        let picker = UIImagePickerController()
        picker.delegate = self
        picker.sourceType = .photoLibrary
        picker.allowsEditing = true
        picker.mediaTypes = UIImagePickerController.availableMediaTypes(for: .photoLibrary)!
        present(picker, animated: true, completion: nil)
    }

    // MARK: - UIImagePickerControllerDelegate Methods
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {

        if let img = info[UIImagePickerController.InfoKey.editedImage] as? UIImage{
            imageView.image = img
        }
        dismiss(animated: true, completion: nil)
    }
}

我检查了您的代码，发现您缺少设置
UIImagePickerController

我现在尝试使用
photoLibrary

class ImagePickerViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    @IBOutlet var imageView:UIImageView!

    override func viewDidLoad() {
        super.viewDidLoad()

        self.openPhotoGallery()
    }

    func openPhotoGallery() {

        let picker = UIImagePickerController()
        picker.delegate = self
        picker.sourceType = .photoLibrary
        picker.allowsEditing = true
        picker.mediaTypes = UIImagePickerController.availableMediaTypes(for: .photoLibrary)!
        present(picker, animated: true, completion: nil)
    }

    // MARK: - UIImagePickerControllerDelegate Methods
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {

        if let img = info[UIImagePickerController.InfoKey.editedImage] as? UIImage{
            imageView.image = img
        }
        dismiss(animated: true, completion: nil)
    }
}

我还没有加上那个密码。。但是我仍然无法裁剪。。。现在，我编辑了这篇文章，并将其添加到您的VC->
UIImagePickerControllerDelegate
，
UINavigationControllerDelegate
？请检查我编辑的问题。。刚刚编辑过阿金。。我是否遗漏了任何你可以裁剪的图像。。请输入密码。。任何工作代码。。或者工作样本将是有帮助的，请张贴您的整个代码，或者如果您有在github的样本项目，请共享。。我使用的是Xcode 11.3版本。。我需要代码，请分享我还没有添加代码。。但是我仍然无法裁剪。。。现在，我编辑了这篇文章，并将其添加到您的VC->
UIImagePickerControllerDelegate
，
UINavigationControllerDelegate
？请检查我编辑的问题。。刚刚编辑过阿金。。我是否遗漏了任何你可以裁剪的图像。。请输入密码。。任何工作代码。。或者工作样本将是有帮助的，请张贴您的整个代码，或者如果您有在github的样本项目，请共享。。我使用的是Xcode 11.3版本。。我需要代码，请分享