swift - 如何在 Xcode swift 中更改图片方向

Question

我从照片库中获取一张图片，并使用以下代码将其称为图像:

@IBAction func importImage(_ sender: AnyObject) {
    let image = UIImagePickerController()
    image.delegate = self
    image.sourceType = UIImagePickerControllerSourceType.photoLibrary
    image.allowsEditing = false
    self.present(image, animated: true) { }
}

和这段代码:

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {
        myImageView.image = image
        dismiss(animated: true, completion: nil)
        SubmitBtnOutlet.isHidden = false;
        Gurpcontroller.person = "yours";
        Gurpcontroller.collecterthing = "Coin";
        PictureViewController.imageuniversal = myImageView
    } else {
        //Error message
    }
}

我想看看图像是横向还是纵向。然后，如果它是横向的，我想将其更改为纵向。

Answer 1

您可以使用 image.imageOrientation 获取方向。

为了改变方向，最快的解决方案是从实际图像创建一个新的 UIImage，如下所示:

let newImage = UIImage(cgImage: image.cgImage!, scale: image.scale, orientation: .up)