I'm working on both flutter and swift in order to customize my camera.
My Flutter version
My XCode version
I've made my camera as below
I want to take a picture when button is pressed. How can I complete this?
Here is my code
.dart file
class IOSCompositionWidget extends StatefulWidget {
const IOSCompositionWidget({super.key});
@override
State<IOSCompositionWidget> createState() => _IOSCompositionWidgetState();
}
class _IOSCompositionWidgetState extends State<IOSCompositionWidget> {
static const platformChannel =
MethodChannel('com.vrin.methodchannel/cameraButton');
dynamic nativePhoto;
final String text = '';
@override
Widget build(BuildContext context) {
Map<String, dynamic> creationParams = <String, dynamic>{};
creationParams["text"] = text;
return Scaffold(
backgroundColor: Colors.black,
body: Column(
mainAxisAlignment: MainAxisAlignment.start,
children: [
SizedBox(
height: MediaQuery.of(context).size.height * 0.068,
),
Padding(
padding: EdgeInsets.only(
left: MediaQuery.of(context).size.width * 0.062,
right: MediaQuery.of(context).size.width * 0.038,
),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
SvgPicture.asset(
'images/help.svg',
height: 24,
width: 24,
),
SizedBox(
width: MediaQuery.of(context).size.width * 0.026,
),
SvgPicture.asset(
'images/timer.svg',
height: 24,
width: 24,
),
],
),
Container(
height: MediaQuery.of(context).size.height * 0.028,
width: MediaQuery.of(context).size.width * 0.262,
color: Colors.white,
),
SvgPicture.asset(
'images/close.svg',
height: 24,
width: 24,
),
],
),
),
SizedBox(
height: MediaQuery.of(context).size.height * 0.017,
),
SizedBox(
height: MediaQuery.of(context).size.height * 0.646,
width: MediaQuery.of(context).size.width,
child: UiKitView(
viewType: 'NativeView',
creationParams: creationParams,
creationParamsCodec: const StandardMessageCodec(),
),
),
SizedBox(
height: MediaQuery.of(context).size.height * 0.063,
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
GestureDetector(
onTap: () async {
print("pressed");
//TODO
},
child: Container(
height: 60,
width: 60,
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(50),
),
),
),
],
),
],
),
);
}
}
My Swift Code
AppDelegate.swift
@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
override func application(
_ application: UIApplication,
didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
) -> Bool {
if #available(iOS 12.0, *) {
UNUserNotificationCenter.current().delegate = self as? UNUserNotificationCenterDelegate
}
let nativeViewFactory = NativeViewFactory()
registrar(forPlugin: "Runner")!.register(nativeViewFactory, withId: "NativeView")
UIApplication.shared.setMinimumBackgroundFetchInterval(TimeInterval(60*15))
FirebaseApp.configure()
GeneratedPluginRegistrant.register(with: self)
return super.application(application, didFinishLaunchingWithOptions: launchOptions)
}
}
NativeViewFactory.swift
import Foundation
import Flutter
import UIKit
import AVFoundation
class NativeViewFactory: NSObject, FlutterPlatformViewFactory{
private var nativeView: NativeView?
private var messenger: FlutterBinaryMessenger?
func createArgsCodec() -> FlutterMessageCodec & NSObjectProtocol {
return FlutterStandardMessageCodec.sharedInstance()
}
override init(){
super.init()
}
init(messenger: FlutterBinaryMessenger) {
self.messenger = messenger
super.init()
}
func create(withFrame frame: CGRect, viewIdentifier viewId: Int64, arguments args: Any?) -> FlutterPlatformView {
self.nativeView = NativeView(
frame: frame,
viewIdentifier: viewId,
arguments: args,
binaryMessenger: messenger)
return nativeView ?? NativeView(
frame: frame,
viewIdentifier: viewId,
arguments: args,
binaryMessenger: messenger)
}
}
class NativeView: NSObject, FlutterPlatformView{
var likeAction: (() -> Void)?
private var returnView: UIView?
var previewView : UIView!
var boxView:UIView!
let myButton: UIButton = UIButton()
//Camera Capture requiered properties
var videoDataOutput: AVCaptureVideoDataOutput!
var videoDataOutputQueue: DispatchQueue!
var previewLayer:AVCaptureVideoPreviewLayer!
var captureDevice : AVCaptureDevice!
let session = AVCaptureSession()
var photoOutput: AVCapturePhotoOutput?
var imageData: Data?
var depthData: AVDepthData?
var depthDataMap: CVPixelBuffer?
override init() {
returnView = UIView()
super.init()
}
init(
frame: CGRect,
viewIdentifier viewId: Int64,
arguments args: Any?,
binaryMessenger messenger: FlutterBinaryMessenger?
) {
returnView = UIView()
super.init()
// iOS views can be created here
createNativeView(view: returnView!, args: args)
// ViewController()
}
func view() -> UIView {
return returnView!
}
func receiveGyeomViewMethod(){
print("receiveGyeomViewMethod")
}
@objc func onClickMyButton(sender: UIButton){
print("button pressed")
}
func createNativeView(view _view: UIView, args: Any?){
_view.backgroundColor = UIColor.black
previewView = UIView(frame: CGRect(x: 0, y: -150, width: UIScreen.main.bounds.size.width, height: UIScreen.main.bounds.size.height))
previewView.contentMode = UIView.ContentMode.scaleAspectFit
view().addSubview(previewView)
self.setupAVCapture()
}
}
extension NativeView: AVCaptureVideoDataOutputSampleBufferDelegate{
func setupAVCapture(){
session.sessionPreset = AVCaptureSession.Preset.photo
let device = AVCaptureDevice.DiscoverySession(deviceTypes: [.builtInDualCamera, .builtInWideAngleCamera], mediaType: AVMediaType.video, position: .back).devices
print(device)
captureDevice = device.first
do {
let captureDeviceInput = try AVCaptureDeviceInput(device: captureDevice!)
session.addInput(captureDeviceInput)
photoOutput = AVCapturePhotoOutput()
//let pixelFormatType = "kCVPixelFormatType_DisparityFloat32"
// photoOutput?.setPreparedPhotoSettingsArray([AVCapturePhotoSettings(format: [AVVideoCodecKey : AVVideoCodecType.jpeg]
// )], completionHandler: nil)
photoOutput?.setPreparedPhotoSettingsArray([AVCapturePhotoSettings(format: [AVVideoCodecKey : AVVideoCodecType.hevc])], completionHandler: nil)
//captureSession.addOutput(photoOutput!)
if session.canAddOutput(photoOutput!) {
session.addOutput(photoOutput!)
photoOutput!.isDepthDataDeliveryEnabled = photoOutput!.isDepthDataDeliverySupported
}
} catch {
print(error)
}
beginSession()
}
func beginSession(){
var deviceInput: AVCaptureDeviceInput!
do {
deviceInput = try AVCaptureDeviceInput(device: captureDevice)
guard deviceInput != nil else {
print("error: cant get deviceInput")
return
}
if self.session.canAddInput(deviceInput){
self.session.addInput(deviceInput)
}
videoDataOutput = AVCaptureVideoDataOutput()
videoDataOutput.alwaysDiscardsLateVideoFrames=true
videoDataOutputQueue = DispatchQueue(label: "VideoDataOutputQueue")
videoDataOutput.setSampleBufferDelegate(self, queue:self.videoDataOutputQueue)
if session.canAddOutput(self.videoDataOutput){
session.addOutput(self.videoDataOutput)
}
videoDataOutput.connection(with: .video)?.isEnabled = true
previewLayer = AVCaptureVideoPreviewLayer(session: self.session)
previewLayer.videoGravity = AVLayerVideoGravity.resizeAspect
let rootLayer :CALayer = self.previewView.layer
rootLayer.masksToBounds=true
previewLayer.frame = rootLayer.bounds
rootLayer.addSublayer(self.previewLayer)
session.startRunning()
} catch let error as NSError {
deviceInput = nil
print("error: \(error.localizedDescription)")
}
}
// clean up AVCapture
func stopCamera(){
session.stopRunning()
}
}
I'm making my custom camera and I need to take picture when flutter button is clicked.
