如何做自定义警报操作表

Question

我有一个邮件API，可以发送一些信息和文档。我只发送文件文档，但我想在UIDocumentPickerView中显示另一个选项。

如何在带有图像的同一个选择器中显示列表"文档，照片，相机等"？

我的代码是：

@available(iOS 8.0, *)
public func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentAt url: URL) {
    let urlData = url as URL
    let theFile = urlData.absoluteString
    self.documentName.text = "(theFileName)"
}
@available(iOS 8.0, *)
public func documentMenu(_ documentMenu:     UIDocumentMenuViewController, didPickDocumentPicker documentPicker: UIDocumentPickerViewController) {
    documentPicker.delegate = self
    present(documentPicker, animated: true, completion: nil)
}
func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) {
    dismiss(animated: true, completion: nil)
}
func mySpecialFunction(){
    let importMenu = UIDocumentMenuViewController(documentTypes: [String(kUTTypePDF)], in: .import)
    importMenu.delegate = self
    importMenu.modalPresentationStyle = .formSheet
    self.present(importMenu, animated: true, completion: nil)
}

Answer 1

它是一个

自定义组件，你需要自己编码，以便在GitHub或CocoaControls上找到类似的东西。