Question

所以我在导航控制器内部，并希望按下按钮时显示图像选择器。这样可以正常工作，但是当我解除拾取器时，它会将我抛回到根视图控制器，而不是我想处理图像的位置。

这是我的代码：

@IBAction func attachPhotoButtonPressed(sender: UIButton) {
        imagePicker.sourceType = .SavedPhotosAlbum
        presentViewController(imagePicker, animated: true, completion: nil)
}

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {
        print("Success")
    } else{
        print("Something went wrong")
    }

    self.dismissViewControllerAnimated(true, completion: nil)
}

我已经看过这些问题，但没有找到解决办法。（不是客观的C家伙）

Pushing a navigation controller is not supported- performing segues

presenting ViewController with NavigationViewController swift

Pushing a navigation controller is not supported

Answer 1

您正在反弹到根视图控制器的原因是因为这一行

self.dismissViewControllerAnimated(true, completion: nil)

正在关闭父视图（self），而不是选择器视图。因此，假设您有一个对您的选择器的引用，那么您应该调用

picker.dismissViewControllerAnimated(true, completion: nil)

Answer 2

我和您有同样的问题，我正在这样做：

// Custom class : see below.
private let imagePicker = ImagePickerViewCustomController() 

@IBAction func openPicker(_ sender: Any) {
    // Hide the navigation bar when the picker is opened
    navigationController!.setNavigationBarHidden(true, animated: false)
    // Add it as a subview
    addChild(imagePicker)
    view.addSubview(imagePicker.view)
}

我有一个UIImagePickerController的子类，它隐藏状态栏。选择器中的scrollView的内容会在状态栏上滚动。

class ImagePickerViewCustomController: UIImagePickerController {
    override func viewDidLoad() {
        super.viewDidLoad()
        UIApplication.shared.isStatusBarHidden = true
    }
}

最后通过以这种方式关闭选择器来处理委托方法：

extension UIViewController : UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]){
        dismissPicker(picker: picker)
    }

    func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
        dismissPicker(picker: picker)
    }

    private func dismissPicker(picker : UIImagePickerController){
        picker.view!.removeFromSuperview()
        picker.removeFromParent()
        navigationController?.setNavigationBarHidden(false, animated: false)
        UIApplication.shared.isStatusBarHidden = false
    }
}

NavigationController里面的Swift ImagePicker

2 个答案: