相关疑难解决方法(0)

我在应用程序中实现了WKWebView.在显示的网页中有一个文件输入,它应该从照片中导入图像.每当我按下该输入并选择"拍照"或"照片库"时,该应用程序突然崩溃,我认为这是因为该应用程序缺少拍照或从库导入的权限.

当用户选择上述方法之一(拍照或照片库)时,如何推送权限请求？

我使用Swift 3.0和WKWebView.

我正在尝试录制视频，然后将其保存在 IOS 设备上，我可以录制它，但我想知道如何将其保存在设备上？

import UIKit
import AVKit
import MobileCoreServices

class ViewController: UIViewController , UIImagePickerControllerDelegate , UINavigationControllerDelegate {
    @IBOutlet weak var RecordButton: UIButton!

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    @IBAction func RecordAction(_ sender: UIButton) {

        if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera) {
            print("Camera Available")

            let imagePicker = UIImagePickerController()
            imagePicker.delegate = self
            imagePicker.sourceType = .camera
            imagePicker.mediaTypes = [kUTTypeMovie as String]
            imagePicker.allowsEditing = false

            self.present(imagePicker, animated: true, completion: nil)
        } else {
            print("Camera UnAvaialable") …