照片库无法访问，只有相机选项可用 swift 代码

Question

I am using Swift 5 code and in code I have to capture image. My source type would be .camera or .photoLibrary . I have perfectly set everything even the permission settings in Info.plist but for unseen reason photo library is not accessible for selecting image. Only camera option is available every time. Please suggest and look into my code what am I doing wrong?

Permission Info.plist:

Privacy - Photo Library Additions Usage Description
Privacy - Photo Library Usage Description
Privacy - Media Library Usage Description
Privacy - Camera Usage Description

Code:

var imagePicker: UIImagePickerController!


 enum ImageSource {
        case photoLibrary
        case camera
    }

    //MARK: - Take image
    func takePhoto() {
        guard UIImagePickerController.isSourceTypeAvailable(.camera) else {
            selectImageFrom(.photoLibrary)
            return
        }
        selectImageFrom(.camera)
    }

    func selectImageFrom(_ source: ImageSource){
        imagePicker =  UIImagePickerController()
        imagePicker.delegate = self
        switch source {
        case .camera:
            imagePicker.sourceType = .camera
        case .photoLibrary:
            imagePicker.sourceType = .photoLibrary
        }
        present(imagePicker, animated: true, completion: nil)
    }

Answer 1

You always prioritize camera in your guard

//MARK: - Take image
func takePhotoLib() { 
    guard UIImagePickerController.isSourceTypeAvailable(.photoLibrary) else { 
        return
    }
    selectImageFrom(.photoLibrary)
}

//MARK: - Take image
func takePhotoCamera() {
    guard UIImagePickerController.isSourceTypeAvailable(.camera) else { 
        return
    }
    selectImageFrom(.camera)
}

Answer 2

Change the argument type from ImageSource to UIImagePickerController.SourceType

func selectImageFrom(_ source: UIImagePickerController.SourceType){
        imagePicker =  UIImagePickerController()
        imagePicker.delegate = self
        switch source {
        case .camera:
            imagePicker.sourceType = .camera
        case .photoLibrary:
            imagePicker.sourceType = .photoLibrary
        }
        present(imagePicker, animated: true, completion: nil)
    }

It should work now.

Sorry, you seem to check whether the device have a camera and then proceed to select that. Show an action sheet for the user to select one of them. It would work.

use this function:

func showOptions(sender: AnyObject) {
    let alertController = UIAlertController.init(title: "Choose Option", message: "", preferredStyle: .actionSheet)
    let cameraAction = UIAlertAction.init(title: "Camera", style: .default) { (action) in
        self.selectImageFrom(.camera)
    }
    alertController.addAction(cameraAction)
    let photoLibraryAction = UIAlertAction.init(title: "Photo Library", style: .default) { (action) in
        self.selectImageFrom(.photoLibrary)
    }
    alertController.addAction(photoLibraryAction)
    let cancelAction = UIAlertAction.init(title: "Cancel", style: .cancel) { (action) in
    }
    alertController.addAction(cancelAction)
    present(alertController, animated: true, completion: nil)
}

Answer 3

I think this function is shorter and reduces the extra code.

func selectImageFrom(_ source: UIImagePickerController.SourceType) {
    guard UIImagePickerController.isSourceTypeAvailable(source) else {
        return
    }
    let imagePicker =  UIImagePickerController()
    imagePicker.delegate = self
    imagePicker.sourceType = source
    present(imagePicker, animated: true, completion: nil)
}

Answer 4

      func selectimage(_ sender: UIButton)
    {
        let alert = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
        alert.addAction(UIAlertAction(title: "Take Photo", style: .default, handler: { _ in
            self.openCamera()
        }))

        alert.addAction(UIAlertAction(title: "Choose Photo", style: .default, handler: { _ in
            self.openGallary()
        }))

        alert.addAction(UIAlertAction.init(title: "Cancel", style: .cancel, handler: nil))

        //If you want work actionsheet on ipad then you have to use popoverPresentationController to present the actionsheet, otherwise app will crash in iPad
        switch UIDevice.current.userInterfaceIdiom {
        case .pad:
            alert.popoverPresentationController?.sourceView = sender
            alert.popoverPresentationController?.sourceRect = sender.bounds
            alert.popoverPresentationController?.permittedArrowDirections = .up
        default:
            break
        }

        self.present(alert, animated: true, completion: nil)
    }


    //MARK: - Open the camera
    func openCamera(){
        if(UIImagePickerController .isSourceTypeAvailable(UIImagePickerControllerSourceType.camera)){
            imagePicker.sourceType = UIImagePickerControllerSourceType.camera

            //If you dont want to edit the photo then you can set allowsEditing to false
            // imagePicker.allowsEditing = true
            imagePicker.delegate = self
            imagePicker.modalPresentationStyle = .overCurrentContext
            self.present(imagePicker, animated: true, completion: nil)


        }
        else{
            let alert  = UIAlertController(title: "Warning", message: "You don't have camera", preferredStyle: .alert)
            alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
            self.present(alert, animated: true, completion: nil)
        }
    }

func openGallary(){
        if(UIImagePickerController .isSourceTypeAvailable(UIImagePickerControllerSourceType.photoLibrary)){
            imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary
            self.tabBarController?.tabBar.isHidden = true
            //If you dont want to edit the photo then you can set allowsEditing to false
            // imagePicker.allowsEditing = true
            imagePicker.delegate = self
            imagePicker.modalPresentationStyle = .overCurrentContext
            self.present(imagePicker, animated: true, completion: nil)


        }