Xcode Swift如何将肖像图像旋转到横向

Question

希望有人可以帮助我。

我有一个imagepicker，照片被拍成肖像。然后我的图像显示在UIImageView中，其宽度大于使图像看起来错误的高度。如何在风景中的uiimageview中显示图片？是否可以在imageview中旋转图像？

我的imagepicker代码是：

func openCamera() {

    if(UIImagePickerController .isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera)) {
        imagePicker.sourceType = UIImagePickerControllerSourceType.Camera
        self .presentViewController(imagePicker, animated: true, completion: nil)
    } else {
        openGallary()
    }
}

func openGallary() {

    imagePicker.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
    if UIDevice.currentDevice().userInterfaceIdiom == .Phone {
        self.presentViewController(imagePicker, animated: true, completion: nil)
    } else {
        popover=UIPopoverController(contentViewController: imagePicker)
    }
}

internal func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {

    imageView.image = info[UIImagePickerControllerOriginalImage] as? UIImage

    let image = info[UIImagePickerControllerOriginalImage] as! UIImage
    imageView.image = image

    photoURL = saveImageToFile(image)

    self.dismissViewControllerAnimated(true, completion: nil)
}