kajornsakp

double potentialEnergy(double mass, double height) {
  return mass * 9.81 * height;
}

//becomes this

static final double GRAVITATIONAL_CONSTANT = 9.81;
double potentialEnergy(double mass, double height) {
  return mass * GRAVITATIONAL_CONSTANT * height;
}

kajornsakp

import UIKit
import Firebase

class ChooseImageViewController: UIViewController {

    let picker = UIImagePickerController()
    lazy var vision = Vision.vision()
    override func viewDidLoad() {
        super.viewDidLoad()
        picker.delegate = self

kajornsakp

//MARK: UIImagePickerController's delegate
extension ChooseImageViewController : UIImagePickerControllerDelegate,UINavigationControllerDelegate{
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
        if let image = info["UIImagePickerControllerOriginalImage"] as? UIImage {
            self.labelImage(image: image)
        }
        picker.dismiss(animated: true, completion: nil)
    }
}

kajornsakp

//MARK: UI
extension ChooseImageViewController{
    func showError(errorMessage : String){
        let alertController = UIAlertController(title: "Error", message: errorMessage, preferredStyle: .alert)
        let action = UIAlertAction(title: "dismiss", style: .default)
        alertController.addAction(action)
        self.present(alertController, animated: true, completion: nil)
    }
    
    func showResultScreen(image : UIImage,resultString : String){

kajornsakp

// MARK: ML Kit label detect
extension ChooseImageViewController{
    func labelImage(image : UIImage){
        let labelDetector = vision.labelDetector()
        let visionImage = VisionImage(image: image)
        labelDetector.detect(in: visionImage){ (labels, error) in
            guard error == nil , let labels = labels, !labels.isEmpty else {
                self.showError(errorMessage: error?.localizedDescription ?? "Something went wrong")
                return
            }

kajornsakp

/**
 * Represents a label for an image.
 */
NS_SWIFT_NAME(VisionLabel)
@interface FIRVisionLabel : NSObject

/**
 * The rectangle that holds the discovered label relative to the detected image in the view
 * coordinate system.
 */

kajornsakp

private fun onImageSelected(uri: Uri) {
        var image: FirebaseVisionImage
        try {
            image = FirebaseVisionImage.fromFilePath(context!!, uri)
            val detector = FirebaseVision.getInstance().getVisionLabelDetector()
            detector.detectInImage(image)
                    .addOnSuccessListener {
                        var output = ""
                        it.forEach {
                            output += it.label + " " + it.confidence + "\n"

kajornsakp

private fun showResultScreen(uri : Uri, label : String){
        val direction = ChooseImageFragmentDirections
                .action_chooseImageFragment_to_resultFragment(uri.toString(),label)
        Navigation.findNavController(activity!!,R.id.my_nav_host_fragment)
                .navigate(direction)
}

kajornsakp

arguments?.let {
  val args = ResultFragmentArgs.fromBundle(it)
  imageView.setImageURI(args.uri.toUri())
  textView.text = args.output
}

kajornsakp

    implementation 'com.google.firebase:firebase-core:15.0.0'
    
    implementation 'com.google.firebase:firebase-ml-vision:15.0.0'
    implementation 'com.google.firebase:firebase-ml-vision-image-label-model:15.0.0'