我使用UIImagePickerController通过iPhone相机拍摄照片。
我想同时展示“拍照”和“选择照片”功能。
我的代码
imagePicker = UIImagePickerController()
imagePicker.delegate = self
imagePicker.sourceType = .camera
//imagePicker.sourceType = .PhotoLibrary
presentViewController(imagePicker, animated: true, completion: nil)
我尝试同时使用imagePicker.sourceType = .Camera和imagePicker.sourceType = .PhotoLibrary来实现这个功能，但是它不起作用...
谢谢
升级到Swift 5+
导入UIImagePickerControllerDelegate并创建一个变量来分配UIImagePickerController
var imagePicker = UIImagePickerController()并设置imagePicker.delegate = self。
创建一个操作表来显示“相机”和“照片库”的选项。
在您的按钮点击操作中：
/// Button action
@IBAction func btnChooseImageOnClick(_ 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)
}
/// Open the camera
func openCamera() {
if(UIImagePickerController .isSourceTypeAvailable(UIImagePickerController.SourceType.camera)){
imagePicker.sourceType = UIImagePickerController.SourceType.camera
//If you dont want to edit the photo then you can set allowsEditing to false
imagePicker.allowsEditing = true
imagePicker.delegate = self
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)
}
}
/// Choose image from camera roll
func openGallary() {
imagePicker.sourceType = UIImagePickerController.SourceType.photoLibrary
// If you don't want to edit the photo then you can set allowsEditing to false
imagePicker.allowsEditing = true
imagePicker.delegate = self
self.present(imagePicker, animated: true, completion: nil)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
// Get the image from the info dictionary.
if let editedImage = info[.editedImage] as? UIImage {
self.imgProfile.image = editedImage
}
// Dismiss the UIImagePicker after selection
picker.dismiss(animated: true, completion: nil)
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
picker.isNavigationBarHidden = false
self.dismiss(animated: true, completion: nil)
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) { picker.isNavigationBarHidden = false self.dismiss(animated: true, completion: nil) } - anas.p使用相机和图库的操作表：
//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)
}
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)
}
}
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代理:
//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)
}
设置代理：
UIImagePickerControllerDelegate,UINavigationControllerDelegate
拿一个ImageView，这样我们就可以显示选定/捕获的图像：
@IBOutlet weak var imageViewPic: UIImageView!
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)
}
从画廊中选择照片：
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)
}
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)
}
需要在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%可行并已测试
在故事板中创建视图控制器，添加按钮和图片
在视图控制器中添加UIImagePickerControllerDelegate、UINavigationControllerDelegate协议
相机操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)
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)
}
}
Privacy - Photo Library Usage Description
Privacy - Camera Usage Description
我创建了这个精美的项目，用这四行代码，你可以从相机或图库获取图像，并使用一行代码应用美丽的滤镜，就像这样：
let picker = PickerController()
picker.applyFilter = true // to apply filter after selecting the picture by default false
picker.selectImage(self){ image in
// Use the picture
}
//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)
}
这将创建一个可重用的类，当你的图片、按钮等被点击时，它将显示一个操作表。
import Foundation
import UIKit
class CameraHandler: NSObject{
static let shared = CameraHandler()
fileprivate var currentVC: UIViewController!
//MARK: Internal Properties
var imagePickedBlock: ((UIImage) -> Void)?
func camera()
{
if UIImagePickerController.isSourceTypeAvailable(.camera){
let myPickerController = UIImagePickerController()
myPickerController.delegate = self
myPickerController.allowsEditing = true
myPickerController.sourceType = .camera
currentVC.present(myPickerController, animated: true, completion: nil)
}
}
func photoLibrary()
{
if UIImagePickerController.isSourceTypeAvailable(.photoLibrary){
let myPickerController = UIImagePickerController()
myPickerController.delegate = self
myPickerController.allowsEditing = true
myPickerController.sourceType = .photoLibrary
currentVC.present(myPickerController, animated: true, completion: nil)
}
}
func showActionSheet(vc: UIViewController) {
currentVC = vc
let actionSheet = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
actionSheet.addAction(UIAlertAction(title: "Camera", style: .default, handler: { (alert:UIAlertAction!) -> Void in
self.camera()
}))
actionSheet.addAction(UIAlertAction(title: "Gallery", style: .default, handler: { (alert:UIAlertAction!) -> Void in
self.photoLibrary()
}))
actionSheet.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
vc.present(actionSheet, animated: true, completion: nil)
}
}
extension CameraHandler: UIImagePickerControllerDelegate, UINavigationControllerDelegate{
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
// The info dictionary may contain multiple representations of the image. Since we said "allowsEditing = true" we need to set this to ".editedImage".
guard let selectedImage = info[.editedImage] as? UIImage else {
fatalError("“Expected a dictionary containing an image, but was provided the following: \(info)")
}
// Set photoImageView to display the selected image.
self.imagePickedBlock?(selectedImage)
// Dismiss the picker.
currentVC.dismiss(animated: true, completion: nil)
}
}
使用方法
确保您的信息PList设置如下图所示。
创建一个带有UIImageView的故事板，并将imageView拖动到ViewController中。这将创建一个类似于下面代码中看到的@IBOutlet。我将我的imageView命名为profileImageView。
创建一个UIImage并将其设置为资产文件夹中的图像或使用系统图像。如果使用系统图像，它应该像这样UIImage(systemName: "plus") 注意：plus是一个示例，可以在那里传递任何系统图像。
(4) 创建一个函数来更新profileImageView以满足您的需求，将图像添加到profileImageView，然后在ViewDidLoad()中调用此函数。
(5) 在同一函数中，我设置了一个tapGestureRecognizer，因此每次点击imageView时都会通知它并触发editImageTapGesture()函数。
(6) 设置editImageTapGesture函数以访问CameraHandler并显示操作表，以及将图像（您从库中选择或从相机中获取）分配给您的profileImageView。
import UIKit
class EditProfileImageController: UIViewController {
// (2) IBOutlet from storyboard
@IBOutlet weak var profileImageView: UIImageView!
// (3) Add image: this can be a system image or in my case an image in my assets folder named "noImage".
var profileImage = UIImage(named: "noImage")
override func viewDidLoad() {
super.viewDidLoad()
setupProfileImage()
}
//(4) I setup the profile image in this function and set profile image to the profileImageView
private func setupProfileImage() {
profileImageView.contentMode = .scaleAspectFill
profileImageView.image = profileImage
//(5) setup tap gesture for when profileImageView is tapped
profileImageView.isUserInteractionEnabled = true
let editImageTapGesture = UITapGestureRecognizer(target: self, action: #selector(editProfileImageTapped(_:)))
profileImageView.addGestureRecognizer(editImageTapGesture)
}
//(6) Once tap on profile image occurs the action sheet appears with Gallery and Camera buttons.
@objc func editProfileImageTapped(_ sender: UITapGestureRecognizer) {
CameraHandler.shared.showActionSheet(vc: self)
CameraHandler.shared.imagePickedBlock = { (image) in
self.profileImageView.image = image
}
}
}
Swift 5: 你可以使用下方的相机图像：
创建一个项目
在主Storyboard中，在底部添加两个按钮并添加imageView，然后链接到viewController。
在Info.plist中添加Privacy - Camera Usage Description权限，如下所示：
将以下代码粘贴到视图控制器中：
class ViewController: UIViewController {
@IBOutlet weak var imageView: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
}
@IBAction func btnPhotGalary(_ sender: Any) {
let picker = UIImagePickerController()
picker.sourceType = .photoLibrary
picker.delegate = self
present(picker, animated: true)
}
@IBAction func btnCapture(_ sender: Any) {
let picker = UIImagePickerController()
picker.sourceType = .camera
//for camera front
// picker.cameraDevice = .front
picker.delegate = self
picker.allowsEditing = false
present(picker, animated: true)
}
}
extension ViewController :UIImagePickerControllerDelegate,UINavigationControllerDelegate{
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
picker.dismiss(animated: true, completion: nil)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
picker.dismiss(animated: true, completion: nil)
guard let originalImage = info[UIImagePickerController.InfoKey.originalImage] as? UIImage else {
return
}
//for image rotation
let image = originalImage.upOrientationImage()
imageView.image = image
}
}
extension UIImage {
func upOrientationImage() -> UIImage? {
switch imageOrientation {
case .up:
return self
default:
UIGraphicsBeginImageContextWithOptions(size, false, scale)
draw(in: CGRect(origin: .zero, size: size))
let result = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return result
}
}
}
Swift 5 简单易行，只需调用函数
//MARK Life Cycles
override func viewDidLoad() {
super.viewDidLoad()
choosePicture
}
extension AddBook: UIPickerViewDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
@objc func choosePicture(){
let alert = UIAlertController(title: "Select Image", message: "", preferredStyle: .actionSheet)
alert.modalPresentationStyle = .overCurrentContext
alert.addAction(UIAlertAction(title: "Camera", style: .default, handler: { (action) in
self.openCamera()
}))
alert.addAction(UIAlertAction(title: "Photo Library", style: .default, handler: { (action) in
self.openGallary()
}))
alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
let popoverController = alert.popoverPresentationController
popoverController?.permittedArrowDirections = .up
self.present(alert, animated: true, completion: nil)
}
func openCamera() {
if(UIImagePickerController .isSourceTypeAvailable(UIImagePickerController.SourceType.camera))
{
imagePicker.sourceType = UIImagePickerController.SourceType.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 = UIImagePickerController.SourceType.photoLibrary
imagePicker.allowsEditing = true
self.present(imagePicker, animated: true, completion: nil)
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
picker.dismiss(animated: true, completion: nil)
}
private func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
// picker.supportedInterfaceOrientations = .
if let image = info[UIImagePickerController.InfoKey.originalImage.rawValue] as? UIImage {
if btnPicOther.tag == 1 {
btnPicOther.setImage(image, for: .normal)
}
else if btnPicBack.tag == 1 {
btnPicBack.setImage(image, for: .normal)
}
else if btnPicFront.tag == 1{
btnPicFront.setImage(image, for: .normal)
}
picker.dismiss(animated: true, completion: nil)
}
}
}