我尝试设置 CFBundleDisplayName和 Privacy - Photo Library Usage Description 但仍然无法正常工作

但在设置中它有权限开/关

我尝试卸载该应用程序并再次安装，但它从不询问是否已关闭它显示上面的屏幕截图...用户必须转到设置并打开它。

那么如何让它在第一次使用时请求许可。

这是我正在使用的代码

let imgPicker:UIImagePickerController=UIImagePickerController()
imgPicker.delegate=self
imgPicker.sourceType=UIImagePickerControllerSourceType.PhotoLibrary
imgPicker.mediaTypes=[kUTTypeImage as String,kUTTypeMovie as String]
UIApplication.sharedApplication().keyWindow?.rootViewController?.presentViewController(imgPicker, animated: true, completion: nil)

最佳答案

我刚刚创建了一个扩展来执行此操作，您应该能够将它添加到您的代码中并将 socket 连接到任何触发您应用中的图像选择器的东西。

   // MARK: - UIImagePickerControllerDelegate Methods
extension UIViewController:UIImagePickerControllerDelegate, UINavigationControllerDelegate{

@IBAction func newImgTapped(sender: UIButton) {
    let imgPicker = UIImagePickerController()
    imgPicker.delegate = self
    let status = AVCaptureDevice.authorizationStatusForMediaType(AVMediaTypeVideo)
    if status == AVAuthorizationStatus.Denied{

        let changeYourSettingsAlert = UIAlertController(title: "You do not have permissions enabled for this.", message: "Would you like to change them in settings?", preferredStyle: .Alert)
        let okAction = UIAlertAction(title: "OK", style: .Default, handler: { (UIAlertAction) -> Void in
            guard let url = NSURL(string: UIApplicationOpenSettingsURLString) else {return}
            UIApplication.sharedApplication().openURL(url)
            print("opensettings")

        })
        let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel, handler: nil)

        changeYourSettingsAlert.addAction(okAction)
        changeYourSettingsAlert.addAction(cancelAction)
        presentAlert(changeYourSettingsAlert)


    } else {
        let Alert = UIAlertController(title: "Where would you like to get photos from?", message: nil, preferredStyle: UIAlertControllerStyle.ActionSheet)
        Alert.popoverPresentationController?.sourceRect = sender.bounds
        Alert.popoverPresentationController?.sourceView = sender
        let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel, handler: nil)

        imgPicker.allowsEditing = true
        imgPicker.modalPresentationStyle = UIModalPresentationStyle.Popover
        imgPicker.popoverPresentationController?.sourceView = sender
        imgPicker.popoverPresentationController?.sourceRect = sender.bounds

        presentAlert(Alert)

        let camera = UIAlertAction(title: "Take a Photo", style: .Default) { (camera) -> Void in
            imgPicker.sourceType = .Camera
            self.presentViewController(imgPicker, animated: true, completion: nil)
        }

        let photoLibrary = UIAlertAction(title: "Choose from Library", style: .Default) { (Photolibrary) -> Void in

            imgPicker.sourceType = .PhotoLibrary
            self.presentViewController(imgPicker, animated: true, completion: nil)

        }

        if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera){
            Alert.addAction(camera)
        }
        if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.PhotoLibrary){
            Alert.addAction(photoLibrary)
        }
        Alert.addAction(cancelAction)
    }
}

public func presentAlert(sender:UIAlertController){
    presentViewController(sender, animated: false, completion: nil)
}

public func imagePickerControllerDidCancel(picker: UIImagePickerController) {
    dismissViewControllerAnimated(true, completion: nil)
}
}

希望对您有所帮助。

关于ios - UIImagePickerController 也没有在首次使用时请求许可，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/35883273/