I have managed to take a correct picture of an ID Card, however, to help the user to frame it I need to do it through a frame with rounded edges exactly as shown in the image. I have tried many approaches without success. Could someone give me some guidance?
import UIKit
import SwiftUI
import AVFoundation
struct CameraView: UIViewControllerRepresentable {
#Binding var isShowing: Bool
#Binding var capturedImage: UIImage?
func makeUIViewController(context: UIViewControllerRepresentableContext<CameraView>) -> UIViewController {
let cameraView = UIImagePickerController()
cameraView.sourceType = .camera
cameraView.delegate = context.coordinator
return cameraView
}
func updateUIViewController(_ uiViewController: UIViewController, context: UIViewControllerRepresentableContext<CameraView>) {
}
func makeCoordinator() -> Coordinator {
return Coordinator(isShowing: $isShowing, capturedImage: $capturedImage)
}
class Coordinator: NSObject, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
#Binding var isShowing: Bool
#Binding var capturedImage: UIImage?
init(isShowing: Binding<Bool>, capturedImage: Binding<UIImage?>) {
_isShowing = isShowing
_capturedImage = capturedImage
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
let image = info[UIImagePickerController.InfoKey.originalImage] as! UIImage
capturedImage = image
isShowing = false
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
isShowing = false
}
}
}
The way to handle this is to use the UIImagePickerController.cameraOverlayView property. You assign a UIView to this which is presented over the top of the camera.
Here's a (bad looking) example, using SwiftUI View and a UIHostingController…
struct Overlay: View {
var body: some View {
VStack(spacing: 0) {
Rectangle().fill(.black.opacity(0.5))
.frame(height: 100)
HStack(spacing: 0) {
Rectangle().fill(.black.opacity(0.5))
.frame(width: 20)
Color.clear
Rectangle().fill(.black.opacity(0.5))
.frame(width: 20)
}
.frame(maxWidth: .infinity)
.frame(height: 200)
Rectangle().fill(.black.opacity(0.5))
Color.clear
.frame(height: 200)
}
}
}
and then
func makeUIViewController(context: UIViewControllerRepresentableContext<CameraView>) -> UIViewController {
let cameraView = UIImagePickerController()
cameraView.sourceType = .camera
cameraView.delegate = context.coordinator
let overlayView = UIHostingController(rootView: Overlay()).view
overlayView?.backgroundColor = .clear
overlayView?.isUserInteractionEnabled = false
overlayView?.frame = (cameraView.cameraOverlayView?.frame)!
cameraView.cameraOverlayView = overlayView
return cameraView
}
gives…
There are more details in the Apple documentation
Related
I'm new in Swift and ARKit. For some reason the SCNNode node I'm trying to display is not showing up. I'm working with SwiftUI. I defined in the next code block the function addNode that should render the node.
import Foundation
import ARKit
import SwiftUI
// MARK: - ARViewIndicator
struct ARViewIndicator: UIViewControllerRepresentable {
typealias UIViewControllerType = ARView
func makeUIViewController(context: Context) -> ARView {
return ARView()
}
func updateUIViewController(_ uiViewController:
ARViewIndicator.UIViewControllerType, context:
UIViewControllerRepresentableContext<ARViewIndicator>) { }
}
class ARView: UIViewController, ARSCNViewDelegate {
var arView: ARSCNView {
return self.view as! ARSCNView
}
override func loadView() {
self.view = ARSCNView(frame: .zero)
}
override func viewDidLoad() {
super.viewDidLoad()
arView.delegate = self
arView.scene = SCNScene()
}
// MARK: - Functions for standard AR view handling
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
}
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
let configuration = ARWorldTrackingConfiguration()
arView.debugOptions = [.showFeaturePoints,
.showWorldOrigin]
arView.session.run(configuration)
arView.delegate = self
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
arView.session.pause()
}
func addNode(){
let node = SCNNode()
node.geometry = SCNBox(width: 0.1,
height: 0.1,
length: 0.1,
chamferRadius: 0)
node.geometry?.firstMaterial?.diffuse.contents = UIColor.blue
node.position = SCNVector3(0,0,0.3)
arView.scene.rootNode.addChildNode(node)
arView.delegate = self
print(123)
}
// MARK: - ARSCNViewDelegate
func sessionWasInterrupted(_ session: ARSession) {}
func sessionInterruptionEnded(_ session: ARSession) {}
func session(_ session: ARSession, didFailWithError error: Error)
{}
func session(_ session: ARSession, cameraDidChangeTrackingState
camera: ARCamera) {}
}
... and that function is invoked when clicking the button "HOME"
import SwiftUI
import ARKit
// MARK: - NavigationIndicator
struct NavigationIndicator: UIViewControllerRepresentable {
typealias UIViewControllerType = ARView
func makeUIViewController(context: Context) -> ARView {
return ARView()
}
func updateUIViewController(_ uiViewController:
NavigationIndicator.UIViewControllerType, context:
UIViewControllerRepresentableContext<NavigationIndicator>) { }
}
struct ContentView: View {
#State var page = "Home"
var body: some View {
VStack {
ZStack {
NavigationIndicator()
VStack {
Spacer()
HStack {
Button("Home") {
let ar = ARView();
ar.addNode()
}.padding()
.background(RoundedRectangle(cornerRadius: 10)
.foregroundColor(Color.white).opacity(0.7))
Spacer()
}
}
}
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
Do you know why it's not showing up ?
Thanks in advance !
Use this approach for SceneKitView:
import SwiftUI
import ARKit
struct SceneKitView: UIViewRepresentable {
let arView = ARSCNView(frame: .zero)
#Binding var pressed: Bool
#Binding var node: SCNNode
func makeCoordinator() -> Coordinator {
Coordinator(self)
}
final class Coordinator: NSObject, ARSCNViewDelegate {
var control: SceneKitView
init(_ control: SceneKitView) {
self.control = control
}
func renderer(_ renderer: SCNSceneRenderer,
updateAtTime time: TimeInterval) {
if control.pressed {
self.control.node = self.addCube()
self.control.arView.scene.rootNode.addChildNode(control.node)
}
}
fileprivate func addCube() -> SCNNode {
control.node.geometry = SCNBox(width: 0.25,
height: 0.25,
length: 0.25,
chamferRadius: 0.01)
control.node.geometry?.firstMaterial?.diffuse.contents = UIColor.blue
control.node.geometry?.firstMaterial?.lightingModel = .phong
control.node.position = SCNVector3(0, 0,-2)
return control.node
}
}
func makeUIView(context: Context) -> ARSCNView {
arView.scene = SCNScene()
arView.delegate = context.coordinator
arView.autoenablesDefaultLighting = true
arView.debugOptions = .showFeaturePoints
// arView.allowsCameraControl = true
let config = ARWorldTrackingConfiguration()
arView.session.run(config)
return arView
}
func updateUIView(_ uiView: ARSCNView,
context: Context) { }
}
Then use this code for ContentView.
struct ContentView: View {
#State var pressed: Bool = false
#State var node = SCNNode()
var body: some View {
ZStack {
SceneKitView(pressed: $pressed, node: $node)
VStack {
Spacer()
HStack {
Button("Blue Cube") {
pressed.toggle()
}.padding()
.foregroundColor(.red)
Spacer()
}
}
}
}
}
P.S.
However, a strange issue occurs with ARSCNView in Simulator – after pressing a button a SCNBox appears only after tapping a screen with .allowsCameraControl = true.
I followed this article on how to display a SearchBar in the NavigationBar. I integrated it like this into my view:
struct ExploreView: View {
#ObservedObject var searchBar = SearchBar()
var body: some View {
NavigationView {
ZStack {
Color(red: 250/255, green: 250/255, blue: 250/255)
.edgesIgnoringSafeArea(.all)
VStack(spacing: 0) {
Image(R.image.navigationBarBackground)
.resizable()
.scaledToFit()
.frame(width: UIScreen.main.bounds.width)
.edgesIgnoringSafeArea(.all)
Spacer()
}
}
.navigationBarTitle("", displayMode: .inline)
.add(self.searchBar)
}
.navigationViewStyle(StackNavigationViewStyle())
}
}
class SearchBar: NSObject, ObservableObject {
#Published var text: String = ""
let searchController: UISearchController = UISearchController(searchResultsController: nil)
override init() {
super.init()
self.searchController.obscuresBackgroundDuringPresentation = false
self.searchController.searchResultsUpdater = self
}
}
extension SearchBar: UISearchResultsUpdating {
func updateSearchResults(for searchController: UISearchController) {
// Publish search bar text changes.
if let searchBarText = searchController.searchBar.text {
self.text = searchBarText
}
}
}
struct SearchBarModifier: ViewModifier {
let searchBar: SearchBar
func body(content: Content) -> some View {
content
.overlay(
ViewControllerResolver { viewController in
viewController.navigationItem.searchController = self.searchBar.searchController
}
.frame(width: 0, height: 0)
)
}
}
extension View {
func add(_ searchBar: SearchBar) -> some View {
return self.modifier(SearchBarModifier(searchBar: searchBar))
}
}
final class ViewControllerResolver: UIViewControllerRepresentable {
let onResolve: (UIViewController) -> Void
init(onResolve: #escaping (UIViewController) -> Void) {
self.onResolve = onResolve
}
func makeUIViewController(context: Context) -> ParentResolverViewController {
ParentResolverViewController(onResolve: onResolve)
}
func updateUIViewController(_ uiViewController: ParentResolverViewController, context: Context) {
}
}
class ParentResolverViewController: UIViewController {
let onResolve: (UIViewController) -> Void
init(onResolve: #escaping (UIViewController) -> Void) {
self.onResolve = onResolve
super.init(nibName: nil, bundle: nil)
}
required init?(coder: NSCoder) {
fatalError("Use init(onResolve:) to instantiate ParentResolverViewController.")
}
override func didMove(toParent parent: UIViewController?) {
super.didMove(toParent: parent)
if let parent = parent {
onResolve(parent)
}
}
}
It look's like this: SearchBar: inactive, SearchBar: active
But I would like to have the inactive SearchBar in the same position as the active SearchBar to avoid the free space. In the end it should look like the SearchBar in the Instagram App. Does anyone know how to do this?
Add this piece of code inside your init() method of SearchBar. It will make search bar at same position when it's active.
self.searchController.hidesNavigationBarDuringPresentation = false
If you want to set search bar to navigation bar title instead of text, inside your overlay(_:)
Change this code
ViewControllerResolver { viewController in
viewController.navigationItem.searchController = self.searchBar.searchController
}
To
ViewControllerResolver { viewController in
viewController.navigationItem.titleView = self.searchBar.searchController.searchBar
}
I am trying to implement an inputAccessoryView on a TextField in SwiftUI. The goal is to have a "Done" Button appear above the Keyboard which when pressed gets rid of the keyboard (i.e. resignFirstResponder()).
I came across the following Medium article which purports to implement this behavior exactly as I would require, however, I am struggling to get it working.
Medium link containing method to be implemented.
I have tried to implement this in a blank XCode project, my code compiles, however, the TextField never shows up, and I cannot touch in the area it should be to bring up the keyboard. How do I correctly implement this code to get the desired behavior?
Code
import Foundation
import UIKit
import SwiftUI
class TextFieldViewController
: UIViewController {
// our custom text field will report changes to the outside
let text: Binding<String>?
// if the toolbar (see below) is used (Done), the keyboard shall be dismissed
// and optionally we execute a provided closure
let onDismiss: (() -> Void)?
init (
text: Binding<String>
, onDismiss: (() -> Void)?) {
self.text = text
self.onDismiss = onDismiss
super.init(
nibName: nil //"<XIB>"
, bundle: nil //Bundle.main?
)
}
required init?(coder: NSCoder) {
self.text = nil
self.onDismiss = nil
super.init(coder: coder)
}
// helper function to encapsulate calling the "view" of UIViewController
fileprivate func getTextField() -> UITextField? {
return view as? UITextField
}
override func viewDidLoad() {
let textField = self.getTextField()
guard textField != nil else {
return
}
// configure a toolbar with a Done button
let toolbar = UIToolbar()
toolbar.setItems([
// just moves the Done item to the right
UIBarButtonItem(
barButtonSystemItem: UIBarButtonItem.SystemItem.flexibleSpace
, target: nil
, action: nil
)
, UIBarButtonItem(
title: "Done"
, style: UIBarButtonItem.Style.done
, target: self
, action: #selector(self.onSet)
)
]
, animated: true
)
toolbar.barStyle = UIBarStyle.default
toolbar.sizeToFit()
textField?.inputAccessoryView = toolbar
}
#objc private func onSet() {
let textField = self.getTextField()
textField?.resignFirstResponder()
self.text?.wrappedValue = textField?.text ?? ""
self.onDismiss?()
}
}
// The SwiftUI view, wrapping the UITextField
struct TextFieldView: View {
var text: Binding<String>
var onDismissKeyboard: (() -> Void)?
var body: some View {
TextFieldRepresentable(
text: self.text
, dismissKeyboardCallback: self.onDismissKeyboard
)
}
}
// The UIViewControllerRepresentable, feeding and controlling the UIViewController
struct TextFieldRepresentable
: UIViewControllerRepresentable {
// the callback
let dismissKeyboardCallback: (() -> Void)?
// created in the previous file/gist
let viewController: TextFieldViewController
init (
text: Binding<String>
, dismissKeyboardCallback: (() -> Void)?) {
self.dismissKeyboardCallback = dismissKeyboardCallback
self.viewController = TextFieldViewController(
text: text
, onDismiss: dismissKeyboardCallback
)
}
// UIViewControllerRepresentable
func makeUIViewController(context: Context) -> UIViewController {
return viewController
}
// UIViewControllerRepresentable
func updateUIViewController(_ viewController: UIViewController, context: Context) {
}
}
struct ContentView : View {
#State var email:String = ""
var body: some View {
HStack{
Circle()
TextFieldView(text: $email)
Circle()
}
}
}
Here is a demo with custom toolbar & binding for entered text, but simplified by excluding on dismiss callback (as it is not important for approach demo), just to have less code. Hope it will be helpful.
import SwiftUI
import UIKit
import Combine
struct CustomInputTextField : UIViewRepresentable {
#Binding var text: String
let textField = UITextField(frame: CGRect(x:0, y:0, width: 100, height: 32)) // just any
func makeUIView(context: UIViewRepresentableContext<CustomInputTextField>) -> UITextField {
return textField
}
func updateUIView(_ uiView: UITextField, context: UIViewRepresentableContext<CustomInputTextField>) {
self.textField.text = text
}
func makeCoordinator() -> CustomInputTextField.Coordinator {
let coordinator = Coordinator(self)
// configure a toolbar with a Done button
let toolbar = UIToolbar()
toolbar.setItems([
// just moves the Done item to the right
UIBarButtonItem(
barButtonSystemItem: UIBarButtonItem.SystemItem.flexibleSpace
, target: nil
, action: nil
)
, UIBarButtonItem(
title: "Done"
, style: UIBarButtonItem.Style.done
, target: coordinator
, action: #selector(coordinator.onSet)
)
]
, animated: true
)
toolbar.barStyle = UIBarStyle.default
toolbar.sizeToFit()
textField.inputAccessoryView = toolbar
return coordinator
}
typealias UIViewType = UITextField
class Coordinator: NSObject {
let owner: CustomInputTextField
private var subscriber: AnyCancellable
init(_ owner: CustomInputTextField) {
self.owner = owner
subscriber = NotificationCenter.default.publisher(for: UITextField.textDidChangeNotification, object: owner.textField)
.sink(receiveValue: { _ in
owner.$text.wrappedValue = owner.textField.text ?? ""
})
}
#objc fileprivate func onSet() {
owner.textField.resignFirstResponder()
}
}
}
struct DemoCustomKeyboardInput : View {
#State var email:String = ""
var body: some View {
VStack{
CustomInputTextField(text: $email).border(Color.black)
.padding(.horizontal)
.frame(maxHeight: 32)
Divider()
Text("Entered text: \(email)")
}
}
}
struct DemoCustomKeyboardInput_Previews: PreviewProvider {
static var previews: some View {
DemoCustomKeyboardInput()
}
}
I use this code multi line textfield.
SwiftUI
Swift5
Version 11.3 (11C29)
struct MultiLineTextField: UIViewRepresentable {
#Binding var text: String
let onEditingChanged: (Bool) -> Void
init(text: Binding<String>, onEditingChanged: #escaping (Bool) -> Void = {_ in}) {
self._text = text
self.onEditingChanged = onEditingChanged
}
func makeCoordinator() -> MultiLineTextField.Coordinator {
return MultiLineTextField.Coordinator(parent1: self)
}
func makeUIView(context: UIViewRepresentableContext<MultiLineTextField>) -> UITextView {
let textView = UITextView()
textView.isEditable = true
textView.isUserInteractionEnabled = true
textView.isScrollEnabled = true
textView.font = .systemFont(ofSize: 20)
textView.delegate = context.coordinator
textView.text = self.text
/******* toolbar add **********/
let toolbar = UIToolbar()
toolbar.setItems(
[
UIBarButtonItem(
title: "Done",
style: UIBarButtonItem.Style.done,
target: self,
action: nil
)
]
, animated: true
)
toolbar.barStyle = UIBarStyle.default
toolbar.sizeToFit()
textView.inputAccessoryView = toolbar
/******* toolbar add **********/
return textView
}
func updateUIView(_ uiView: UITextView, context: UIViewRepresentableContext<MultiLineTextField>) {
if uiView.text != self.text {
uiView.text = self.text
}
}
class Coordinator: NSObject, UITextViewDelegate {
var parent: MultiLineTextField
let onEditingChanged: (Bool) -> Void
init(parent1: MultiLineTextField, onEditingChanged: #escaping (Bool) -> Void = {_ in}) {
self.parent = parent1
self.onEditingChanged = onEditingChanged
}
func textViewDidChange(_ textView: UITextView) {
self.parent.text = textView.text
}
func textViewDidBeginEditing(_ textView: UITextView) {
onEditingChanged(true)
}
func textViewDidEndEditing(_ textView: UITextView) {
onEditingChanged(false)
}
}
}
I've solved this problem using 99% pure SwiftUI on iOS 14.
That's my implementation:
import SwiftUI
struct ContentView: View {
#State private var showtextFieldToolbar = false
#State private var text = ""
var body: some View {
ZStack {
VStack {
TextField("Write here", text: $text) { isChanged in
if isChanged {
showtextFieldToolbar = true
}
} onCommit: {
showtextFieldToolbar = false
}
.textFieldStyle(RoundedBorderTextFieldStyle())
.padding()
}
VStack {
Spacer()
if showtextFieldToolbar {
HStack {
Spacer()
Button("Close") {
showtextFieldToolbar = false
UIApplication.shared
.sendAction(#selector(UIResponder.resignFirstResponder),
to: nil, from: nil, for: nil)
}
.foregroundColor(Color.black)
.padding(.trailing, 12)
}
.frame(idealWidth: .infinity, maxWidth: .infinity,
idealHeight: 44, maxHeight: 44,
alignment: .center)
.background(Color.gray)
}
}
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
struct InputAccessory: UIViewRepresentable {
var placeHolder: String
func makeUIView(context: Context) -> UITextField {
let toolbar = UIToolbar()
toolbar.setItems([
// just moves the Done item to the right
UIBarButtonItem(
barButtonSystemItem: UIBarButtonItem.SystemItem.flexibleSpace
, target: nil
, action: nil
)
, UIBarButtonItem(
title: "Done"
, style: UIBarButtonItem.Style.done
, target: self
, action: nil
)
]
, animated: true
)
toolbar.barStyle = UIBarStyle.default
toolbar.sizeToFit()
let customView = UIView(frame: CGRect(x: 0, y: 0, width: 10, height: 44))
customView.backgroundColor = UIColor.red
let sampleTextField = UITextField(frame: CGRect(x: 20, y: 100, width: 300, height: 40))
sampleTextField.inputAccessoryView = toolbar
sampleTextField.placeholder = placeHolder
return sampleTextField
}
func updateUIView(_ uiView: UITextField, context: Context) {
uiView.endEditing(true)
}
}
struct ContentView : View {
#State var email:String = "e"
var body: some View {
HStack{
Circle()
InputAccessory(placeHolder: "hello")
Circle()
}
}
}
PlaygroundPage.current.liveView = UIHostingController(rootView: ContentView())
Now you can hide and show the textfield with the "showInput" state. The next problem is, that you have to open your keyboard at a certain event and show the textfield. That's again not possible with SwiftUI and you have to go back to UiKit and making it first responder.
Overall, at the current state it's not possible to work with the keyboard or with the certain textfield method.
I'm not sure if this a SwiftUI specific issue. Anyway, I'm have an UIImagePickerController that I implemented into a SwiftUI view by using the UIViewControllerRepresentableProtocol:
struct ContentView: View {
#State var showCameraView = false
#State var showImagePicker = false
#State var UserImage = Image("user")
var body: some View {
VStack {
UserImage
.resizable()
.frame(width: 200, height: 200)
.scaledToFit()
.background(Color.gray)
.cornerRadius(200)
.clipped()
Button(action: {self.showImagePicker = true}) {
Text("Choose from camera roll")
}
.padding(.top, 10)
}
.sheet(isPresented: $showImagePicker) {
ImagePicker(showImagePicker: self.$showImagePicker, pickedImage: self.$UserImage)
}
}
}
struct ImagePicker: UIViewControllerRepresentable {
#Binding var showImagePicker: Bool
#Binding var pickedImage: Image
func makeCoordinator() -> ImagePicker.Coordinator {
Coordinator(self)
}
func makeUIViewController(context: UIViewControllerRepresentableContext<ImagePicker>) -> UIImagePickerController {
let imagePicker = UIImagePickerController()
imagePicker.delegate = context.coordinator
return imagePicker
}
func updateUIViewController(_ uiViewController: UIImagePickerController, context: UIViewControllerRepresentableContext<ImagePicker>) {
return
}
class Coordinator: NSObject, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
var parent: ImagePicker
init(_ imagePicker: ImagePicker) {
self.parent = imagePicker
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
let uiImage = info[UIImagePickerController.InfoKey.originalImage] as! UIImage
parent.pickedImage = Image(uiImage: uiImage)
parent.showImagePicker = false
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
parent.showImagePicker = false
}
}
}
It works fine when picking images that are not taken by the device's camera. However, every time I pick an Image that was taken by the camera itself, it seems that the .aspectRatio modifier does not get applied because the loaded Image's dimensions are distorted in this case. Does anybody spot something wrong in my code or know a solution?
Had the same issue. I used a modified version of the one proposed by #ninjahamster where I simply didn't resize the image. Any other solution is welcome.
func resizeImage(image: UIImage) -> UIImage {
let width = image.size.width
let height = image.size.height
UIGraphicsBeginImageContext(CGSize(width: width, height: height))
image.draw(in: CGRect(x: 0, y: 0, width: width, height: height))
let newImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return newImage!
}
I've had the same issue. I didn't find a solution, but a workaround.
I resized the image with a function in the coordinator class, bevor I return it to the view. Works for me.
func resizeImage(image: UIImage) -> UIImage {
let scale = 300 / image.size.width
let newHeight = image.size.height * scale
UIGraphicsBeginImageContext(CGSize(width: 300, height: newHeight))
image.draw(in: CGRect(x: 0, y: 0, width: 300, height: newHeight))
let newImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return newImage!
}
I met the same issue. I didn't realize it is a lacking from SwiftUI!! Now I have applied ninjahamster's workaround.
My code here, in case anyone need some reference. See the changes in func didFinishPickingMediaWithInfo.
import SwiftUI
final class ImagePickerCoordinator: NSObject {
#Binding var image: UIImage?
#Binding var takePhoto: Bool
init(image: Binding<UIImage?>, takePhoto: Binding<Bool>) {
_image = image
_takePhoto = takePhoto
}
}
struct ImagePicker: UIViewControllerRepresentable {
#Binding var image: UIImage?
#Binding var takePhoto: Bool
func makeCoordinator() -> ImagePickerCoordinator {
ImagePickerCoordinator(image: $image, takePhoto: $takePhoto)
}
func makeUIViewController(context: Context) -> UIImagePickerController {
let pickerController = UIImagePickerController()
pickerController.delegate = context.coordinator
return pickerController
}
func updateUIViewController(_ uiViewController: UIImagePickerController, context: Context) {
switch self.takePhoto {
case true:
uiViewController.sourceType = .camera
uiViewController.showsCameraControls = true
case false:
uiViewController.sourceType = .photoLibrary
}
uiViewController.allowsEditing = false
}
}
extension ImagePickerCoordinator: UINavigationControllerDelegate, UIImagePickerControllerDelegate {
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
if let imageOriginal = info[.originalImage] as? UIImage {
// image = imageOriginal
image = resizeImage(image: imageOriginal)
}
if let imageEdited = info[.editedImage] as? UIImage {
image = imageEdited
}
picker.dismiss(animated: true, completion: nil)
}
func resizeImage(image: UIImage) -> UIImage {
let width = image.size.width
let height = image.size.height
UIGraphicsBeginImageContext(CGSize(width: width, height: height))
image.draw(in: CGRect(x: 0, y: 0, width: width, height: height))
let newImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return newImage!
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
picker.dismiss(animated: true, completion: nil)
}
}
I'm working on an app in SwiftUI where I need access to the camera on the iPhone to take a picture while in the app. I followed a tutorial (https://www.youtube.com/watch?v=W60nnRFUGaI) on how to access photos on the device from imagePicker but can't find anywhere on how to access the actual camera view to take a photo or video.
Here is the code I've tried
import SwiftUI
struct ContentView: View {
#State private var showImagePicker: Bool = false
#State private var image: Image? = nil
var body: some View {
VStack {
image?.resizable()
.scaledToFit()
Button("Open Photo Library") {
self.showImagePicker = true
}.padding()
.background(Color.blue)
.foregroundColor(Color.white)
.cornerRadius(10)
}.sheet(isPresented: self.$showImagePicker) {
PhotoCaptureView(showImagePicker: self.$showImagePicker, image: self.$image)
}
}
}
import Foundation
import SwiftUI
class ImagePickerCoordinator: NSObject, UINavigationControllerDelegate, UIImagePickerControllerDelegate {
#Binding var isShown: Bool
#Binding var image: Image?
init(isShown: Binding<Bool>, image: Binding<Image?>) {
_isShown = isShown
_image = image
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
let uiImage = info[UIImagePickerController.InfoKey.originalImage] as! UIImage
image = Image(uiImage: uiImage)
isShown = false
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
isShown = false
}
}
struct ImagePicker: UIViewControllerRepresentable {
#Binding var isShown: Bool
#Binding var image: Image?
func updateUIViewController(_ uiViewController: UIImagePickerController, context: UIViewControllerRepresentableContext<ImagePicker>) {
}
func makeCoordinator() -> ImagePickerCoordinator {
return ImagePickerCoordinator(isShown: $isShown, image: $image)
}
func makeUIViewController(context: UIViewControllerRepresentableContext<ImagePicker>) -> UIImagePickerController {
let picker = UIImagePickerController()
picker.delegate = context.coordinator
return picker
}
}
import SwiftUI
struct PhotoCaptureView: View {
#Binding var showImagePicker: Bool
#Binding var image: Image?
var body: some View {
ImagePicker(isShown: $showImagePicker, image: $image)
}
}
#if DEBUG
struct PhotoCaptureView_Previews: PreviewProvider {
static var previews: some View {
PhotoCaptureView(showImagePicker: .constant(false), image: .constant(Image("")))
}
}
#endif
Change this:
func makeUIViewController(context: UIViewControllerRepresentableContext<ImagePicker>) -> UIImagePickerController {
let picker = UIImagePickerController()
picker.delegate = context.coordinator
return picker
}
To this:
func makeUIViewController(context: UIViewControllerRepresentableContext<ImagePicker>) -> UIImagePickerController {
let picker = UIImagePickerController()
picker.delegate = context.coordinator
if !UIImagePickerController.isSourceTypeAvailable(.camera){
picker.sourceType = .photoLibrary
} else {
picker.sourceType = .camera
}
return picker
}
Remember you will only be able to open the camera in an actual physical device. The simulator doesn't support camera view only image picker.
Hope it works!
I basically the same code, just with some adaptations:
struct CameraView: UIViewControllerRepresentable {
#Binding var showCameraView: Bool
#Binding var pickedImage: Image
func makeCoordinator() -> CameraView.Coordinator {
Coordinator(self)
}
func makeUIViewController(context: UIViewControllerRepresentableContext<CameraView>) -> UIViewController {
let cameraViewController = UIImagePickerController()
cameraViewController.delegate = context.coordinator
cameraViewController.sourceType = .camera
cameraViewController.allowsEditing = false
return cameraViewController
}
func updateUIViewController(_ uiViewController: UIViewController, context: UIViewControllerRepresentableContext<CameraView>) {
}
class Coordinator: NSObject, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
var parent: CameraView
init(_ cameraView: CameraView) {
self.parent = cameraView
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
let uiImage = info[UIImagePickerController.InfoKey.originalImage] as! UIImage
parent.pickedImage = Image(uiImage: uiImage)
parent.showCameraView = false
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
parent.showCameraView = false
}
}
}
Then you can use this as you did with your code (: