ios 如何在 swift 中同时为相机和照片库制作 UIImagePickerController

How to make UIImagePickerController for camera and photo library at the same time in swift

提问by Coucou

I use UIImagePickerController to take a photo by camera of iPhone.

我使用 UIImagePickerController 通过 iPhone 的相机拍照。

I want to show both "take a photo" and "choose a photo".

我想同时显示“拍照”和“选择照片”。

My code

我的代码

imagePicker =  UIImagePickerController()
imagePicker.delegate = self
imagePicker.sourceType = .camera
//imagePicker.sourceType = .PhotoLibrary
presentViewController(imagePicker, animated: true, completion: nil)

I tried to use imagePicker.sourceType = .Cameraand imagePicker.sourceType = .PhotoLibrarytogether to do this, but it doesn't work...

我试图使用imagePicker.sourceType = .Camera和一imagePicker.sourceType = .PhotoLibrary起来做到这一点，但它不起作用......

Thank you

谢谢

回答by anas.p

Import UIImagePickerControllerDelegateand create a variable to assign UIImagePickerController var imagePicker = UIImagePickerController() and set imagePicker.delegate = self.

导入UIImagePickerControllerDelegate并创建一个变量来分配 UIImagePickerController var imagePicker = UIImagePickerController() 并设置imagePicker.delegate = self。

Create a action sheet to display options for 'Camera' and 'Photo library'.

创建一个动作表以显示“相机”和“照片库”的选项。

On your button click action:

在您的按钮单击操作上：

@IBAction func buttonOnClick(_ sender: UIButton)
{
    self.btnEdit.setTitleColor(UIColor.white, for: .normal)
    self.btnEdit.isUserInteractionEnabled = true

    let alert = UIAlertController(title: "Choose Image", message: nil, preferredStyle: .actionSheet)
    alert.addAction(UIAlertAction(title: "Camera", style: .default, handler: { _ in
        self.openCamera()
    }))

    alert.addAction(UIAlertAction(title: "Gallery", 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 on 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)
}

func openCamera()
{
    if(UIImagePickerController .isSourceTypeAvailable(UIImagePickerControllerSourceType.camera))
    {
        imagePicker.sourceType = UIImagePickerControllerSourceType.camera
        imagePicker.allowsEditing = true
        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()
{
    imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary
    imagePicker.allowsEditing = true
    self.present(imagePicker, animated: true, completion: nil)
}

Download sample project from here.

从这里下载示例项目。

回答by Rajesh Loganathan

Swift 5 +:

斯威夫特 5 +：

Action sheet with camera and gallery:

带相机和画廊的动作表：

//MARK:- Image Picker
    @IBAction func imagePickerBtnAction(selectedButton: UIButton)
    {

        let alert = UIAlertController(title: "Choose Image", message: nil, preferredStyle: .actionSheet)
        alert.addAction(UIAlertAction(title: "Camera", style: .default, handler: { _ in
            self.openCamera()
        }))

        alert.addAction(UIAlertAction(title: "Gallery", style: .default, handler: { _ in
            self.openGallery()
        }))

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

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

---

---

Camera image picker functionality:

相机图像选择器功能：

func openCamera()
{
    if UIImagePickerController.isSourceTypeAvailable(UIImagePickerController.SourceType.camera) {
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.sourceType = UIImagePickerController.SourceType.camera
        imagePicker.allowsEditing = false
        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)
    }
}

---

---

Gallery image picker functionality:

图库图像选择器功能：

 func openGallery()
{
    if UIImagePickerController.isSourceTypeAvailable(UIImagePickerController.SourceType.photoLibrary){
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.allowsEditing = true
        imagePicker.sourceType = UIImagePickerController.SourceType.photoLibrary
        self.present(imagePicker, animated: true, completion: nil)
    }
    else
    {
        let alert  = UIAlertController(title: "Warning", message: "You don't have permission to access gallery.", preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
        self.present(alert, animated: true, completion: nil)
    }
}

---

---

ImagePicker delegate:

ImagePicker 委托：

//MARK:-- ImagePicker delegate
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    if let pickedImage = info[.originalImage] as? UIImage {
        // imageViewPic.contentMode = .scaleToFill
    }
    picker.dismiss(animated: true, completion: nil)
}

回答by Mr.Javed Multani

set delegate like:

设置委托如下：

UIImagePickerControllerDelegate,UINavigationControllerDelegate

take one imageview so we can display selected/captured image:

采取一个图像视图，以便我们可以显示选定/捕获的图像：

@IBOutlet weak var imageViewPic: UIImageView!

For capture new image by using device camera:

使用设备摄像头捕获新图像：

if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera) {
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.sourceType = UIImagePickerControllerSourceType.camera
        imagePicker.allowsEditing = false
        self.present(imagePicker, animated: true, completion: nil)
    }

For select photo from gallery:

从图库中选择照片：

if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.photoLibrary){
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.allowsEditing = true
        imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary
        self.present(imagePicker, animated: true, completion: nil)
    }

This is the delegate method :

这是委托方法：

     //MARK: - ImagePicker delegate
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
       // imageViewPic.contentMode = .scaleToFill
        imageViewPic.image = pickedImage
    }
    picker.dismiss(animated: true, completion: nil)
}

set permission for access camera and photo in info.plistlike:

在info.plist 中设置访问相机和照片的权限，例如：

<key>NSCameraUsageDescription</key>
<string>This app will use camera</string>
<key>NSPhotoLibraryUsageDescription</key>
<string>You can select photo</string>

100% working and tested

100% 工作和测试

回答by Tony Franzis

Create view controller and add button and image in the storyboard

创建视图控制器并在故事板中添加按钮和图像

add UIImagePickerControllerDelegate,UINavigationControllerDelegate protocols in view controller

在视图控制器中添加 UIImagePickerControllerDelegate、UINavigationControllerDelegate 协议

camera action button enter following code

相机动作按钮输入以下代码

let imagePickerController = UIImagePickerController()
    imagePickerController.delegate = self
    let actionsheet = UIAlertController(title: "Photo Source", message: "Choose A Sourece", preferredStyle: .actionSheet)
    actionsheet.addAction(UIAlertAction(title: "Camera", style: .default, handler: { (action:UIAlertAction)in
        if UIImagePickerController.isSourceTypeAvailable(.camera){
            imagePickerController.sourceType = .camera
            self.present(imagePickerController, animated: true, completion: nil)
        }else
        {
            print("Camera is Not Available")
        }



    }))
    actionsheet.addAction(UIAlertAction(title: "Photo Library", style: .default, handler: { (action:UIAlertAction)in
        imagePickerController.sourceType = .photoLibrary
        self.present(imagePickerController, animated: true, completion: nil)
    }))
    actionsheet.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
    self.present(actionsheet,animated: true, completion: nil)

Add following function in view controller

在视图控制器中添加以下功能

 func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    let image = info[UIImagePickerControllerOriginalImage] as! UIImage
    imageView.image = image
    picker.dismiss(animated: true, completion: nil)
    }
    func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
    picker.dismiss(animated:  true, completion: nil)
    }
}

in info.plist add row with

在 info.plist 添加行

 Privacy - Photo Library Usage Description
Privacy - Camera Usage Description

回答by tryKuldeepTanwar

I created this beautiful project and with these four lines of code you get image either from camera or library and apply beautiful filters with a single line like this : -

我创建了这个漂亮的项目，使用这四行代码，您可以从相机或库中获取图像，并使用这样的一行应用漂亮的过滤器：-

let picker = PickerController()
picker.applyFilter = true // to apply filter after selecting the picture by default false
picker.selectImage(self){ image in
    // Use the picture
}

Here's the link of the project.

这是项目的链接。

回答by Davender Verma

//MARK:- Camera and Gallery

    func showActionSheet(){

        //Create the AlertController and add Its action like button in Actionsheet
        let actionSheetController: UIAlertController = UIAlertController(title: NSLocalizedString("Upload Image", comment: ""), message: nil, preferredStyle: .actionSheet)
        actionSheetController.view.tintColor = UIColor.black
        let cancelActionButton: UIAlertAction = UIAlertAction(title: NSLocalizedString("Cancel", comment: ""), style: .cancel) { action -> Void in
            print("Cancel")
        }
        actionSheetController.addAction(cancelActionButton)

        let saveActionButton: UIAlertAction = UIAlertAction(title: NSLocalizedString("Take Photo", comment: ""), style: .default)
        { action -> Void in
            self.camera()
        }
        actionSheetController.addAction(saveActionButton)

        let deleteActionButton: UIAlertAction = UIAlertAction(title: NSLocalizedString("Choose From Gallery", comment: ""), style: .default)
        { action -> Void in
            self.gallery()
        }
        actionSheetController.addAction(deleteActionButton)
        self.present(actionSheetController, animated: true, completion: nil)
    }

    func camera()
    {
        let myPickerControllerCamera = UIImagePickerController()
        myPickerControllerCamera.delegate = self
        myPickerControllerCamera.sourceType = UIImagePickerController.SourceType.camera
        myPickerControllerCamera.allowsEditing = true
        self.present(myPickerControllerCamera, animated: true, completion: nil)

    }

    func gallery()
    {

        let myPickerControllerGallery = UIImagePickerController()
        myPickerControllerGallery.delegate = self
        myPickerControllerGallery.sourceType = UIImagePickerController.SourceType.photoLibrary
        myPickerControllerGallery.allowsEditing = true
        self.present(myPickerControllerGallery, animated: true, completion: nil)

    }


    //MARK:- ***************  UIImagePickerController delegate Methods ****************

    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {

        // The info dictionary may contain multiple representations of the image. You want to use the original.
        guard let selectedImage = info[.originalImage] as? UIImage else {
            fatalError("Expected a dictionary containing an image, but was provided the following: \(info)")
        }

        // Set photoImageView to display the selected image.
        imageUserProfile.image = selectedImage

        // Dismiss the picker.
        dismiss(animated: true, completion: nil)
    }