ios - 在 Swift 2.0 中以横向模式使用 UIImagePickerController

Question

我正在编写一个仅限 LandScape 的 iPad 应用程序，我需要从图库中拍摄照片以发送到数据库，但图像上传屏幕仅适用于纵向模式。我如何将其更改为横向模式？我读过一些关于 UIPickerControllerDelegate 不支持横向模式的内容，但一些应用程序(例如 iMessage)已经在使用它。

这是我的代码:

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


func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage!, editingInfo: [NSObject : AnyObject]!) {

    print("Image Selected")

    self.dismissViewControllerAnimated(true, completion: nil)

    profileImageView.image = image

}



@IBAction func importImage(sender: AnyObject) {

    var image = UIImagePickerController()
    image.delegate = self
    image.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
    image.allowsEditing = false

    self.presentViewController(image, animated: true, completion: nil)
}
}

Answer 1

它绝对支持横向模式。把这个扩展放在某个地方。最好在名为 UIImagePickerController+SupportedOrientations.swift 的文件中

extension UIImagePickerController
{
    public override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
        return .Landscape
    }
}

这使得所有 UIImagePickerControllers 都在你的应用场景中。您还可以将其子类化并重写此方法以仅使子类可横向显示:

class LandscapePickerController: UIImagePickerController
{
    public override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
        return .Landscape
    }
}

最后，支持你可以返回的所有方向

return [.Landscape, .Portrait]

对于 Swift 3:

    extension UIImagePickerController
    {
        override open var shouldAutorotate: Bool {
                return true
        }
        override open var supportedInterfaceOrientations : UIInterfaceOrientationMask {
                return .all
        }
}