Ios WKWebView ImagePicker捕获选择图片的事件

我正在使用WKWebView，并在其上点击“加载文件”。WKWebView为我打开UIImagePickerView，在此期间我需要知道选择了什么图像。

对我很有用

override func present(_ viewControllerToPresent: UIViewController, animated flag: Bool, completion: (() -> Void)? = nil) {
    if let imagePicker = viewControllerToPresent as? UIImagePickerController {
        previousIPDelegate = imagePicker.delegate
        imagePickerController = imagePicker
        imagePickerController?.delegate = self
    }

    super.present(viewControllerToPresent, animated: flag, completion: completion)
}

在此之后-您将能够使用didFinishPickingMediaWithInfo func，在该功能中，您可以捕获并使用所选的媒体，应将旧代理返回到imagePicker，并在旧代理中调用didFinishPickingMediaWithInfo func

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    var newInfo = info
    if let pickedImage = newInfo[UIImagePickerControllerOriginalImage] as? UIImage {
        /// DO YOUR STUFF HERE
    }

    picker.delegate = previousIPDelegate
    previousIPDelegate?.imagePickerController!(picker, didFinishPickingMediaWithInfo: newInfo)
}

您应该在DidCancel func中执行相同的操作

func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
    picker.delegate = previousIPDelegate
    previousIPDelegate?.imagePickerControllerDidCancel!(picker)
}

为我工作

override func present(_ viewControllerToPresent: UIViewController, animated flag: Bool, completion: (() -> Void)? = nil) {
    if let imagePicker = viewControllerToPresent as? UIImagePickerController {
        previousIPDelegate = imagePicker.delegate
        imagePickerController = imagePicker
        imagePickerController?.delegate = self
    }

    super.present(viewControllerToPresent, animated: flag, completion: completion)
}

在此之后-您将能够使用didFinishPickingMediaWithInfo func，在该功能中，您可以捕获并使用所选的媒体，应将旧代理返回到imagePicker，并在旧代理中调用didFinishPickingMediaWithInfo func

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    var newInfo = info
    if let pickedImage = newInfo[UIImagePickerControllerOriginalImage] as? UIImage {
        /// DO YOUR STUFF HERE
    }

    picker.delegate = previousIPDelegate
    previousIPDelegate?.imagePickerController!(picker, didFinishPickingMediaWithInfo: newInfo)
}

您应该在DidCancel func中执行相同的操作

func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
    picker.delegate = previousIPDelegate
    previousIPDelegate?.imagePickerControllerDidCancel!(picker)
}

---

阅读文档：或者一些教程，比如您已经尝试过的内容？请多次阅读文档。试图通过navigationDelegate的func的DecidePolicy捕获链接。我没听懂。实际上-我在WKWebView中找不到对UIImagePickerView的访问，这毫无意义：（提供足够的代码来复制您的场景，以便有人能够轻松测试您的逻辑并提供解决方案阅读文档：或一些教程，如您已经尝试过的内容？多次阅读文档。试图通过navigationDelegate的func通过DecidePolicy捕获链接。没有捕获。实际上-我找不到对UIImagePickerView ins的访问权限。）没有意义的ide WKWebView：（提供足够的代码来复制您的场景，以便有人能够轻松测试您的逻辑并提供解决方案。这非常有效，非常感谢，为我节省了很多时间！在我的情况下，这是一个复杂的场景，因为我正在WKWebView上从Froala editor打开一个摄像头，但您的解决方案为我指明了一条道路，非常感谢！什么是“previousIPDelegate”？这很有效，非常感谢，节省了我很多时间！在我的情况下，这是一个复杂的场景，因为我正在WKWebView上从Froala编辑器打开一个摄像头，但您的解决方案为我指明了一条路，非常感谢！什么是“previousIPDelegate”？