Scan Process

fun onClickedBtnStartScan(view: View) {
    val scannerInstance = TireTreadScanner.instance

    val btnStartScan = (view as Button)
    if (!scannerInstance.isScanning) {
        // Here we start scanning
        scannerInstance.startScanning()
        btnStartScan.text = "Stop"
    } else {
        btnStartScan.visibility = View.GONE
        btnStartScan.isEnabled = false
        btnStartScan.isClickable = false
        // Here we stop scanning
        scannerInstance.stopScanning()
    }
}

if (TireTreadScanner.instance.captureDistanceStatus == DistanceStatus.OK)
    TireTreadScanner.instance.startScanning()
else {
    Toast.makeText(
        this,
        "Move the phone to the correct position before starting.",
        Toast.LENGTH_SHORT
    ).show()
}

// Implement the TireTreadScanViewCallback interface
class MyScanActivity : AppCompatActivity(), TireTreadScanViewCallback {

    private var aborted = false

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_scan)

        val myTireTreadScanView = findViewById<TireTreadScanView>(R.id.tireTreadScanView)
        myTireTreadScanView.scanViewCallback = this
    }

    // These callbacks should always be implemented
    override fun onScanAbort(uuid: String?) {
        super.onScanAbort(uuid)
        Log.d("MY_APP", "scan was aborted!")
        aborted = true
        // Leave the scan activity
        finish()
    }

    override fun onUploadCompleted(uuid: String?) {
        super.onUploadCompleted(uuid)
        Log.d("MY_APP", "upload is completed!")

        // redirect to the result loading screen
        if (!aborted && !uuid.isNullOrEmpty()) {
            openLoadAndResultScreen(uuid)
        }
    }

    override fun onUploadAborted(uuid: String?) {
        super.onUploadAborted(uuid)
        mainHandler.post {
            Toast.makeText(applicationContext, "Upload Aborted", Toast.LENGTH_SHORT).show()
        }
        finish()
    }

    override fun onUploadFailed(uuid: String?, exception: Exception) {
        super.onUploadFailed(uuid, exception)
        Log.e("MY_APP", "onUploadFailed: ", exception)

        Toast.makeText(applicationContext, "Upload Failed. Check your internet and try again.", Toast.LENGTH_SHORT).show()

        finish()
    }

    // When not using the 'default UI', you will need to implement (at least) the following functions to control the scan process

    fun startScanning(view: View) {
        TireTreadScanner.instance.startScanning()
    }

    fun stopScanning() {
        TireTreadScanner.instance.stopScanning()
    }

    fun abortScan() {
        TireTreadScanner.instance.abortScanning()
        finish()
    }

    // When not using the "default UI", use this callback to provide guidance to the users
    override fun onDistanceChanged(uuid: String?, previousStatus: DistanceStatus, newStatus: DistanceStatus, previousDistance: Float, newDistance: Float,
    ) {
        super.onDistanceChanged(uuid, previousStatus, newStatus, previousDistance, newDistance)

        // newDistance will be in millimiters if you choose Metric, or in inches, if you choose Imperial
        val scanView = findViewById<TireTreadScanView>(R.id.tireTreadScanView)
        val measurementSystem = scanView.measurementSystem
        val distanceString: String = if(measurementSystem == MeasurementSystem.Imperial){
            "${inchStringToTriple(inchToFractionString(newDistance.toDouble())).first} in"
        } else {
            "${(newDistance/10).toInt()} cm"
        }

        var message = ""
        message = when (newStatus) {
            DistanceStatus.TOO_CLOSE -> {
                "Increase Distance: "
            }
            DistanceStatus.TOO_FAR -> {
                "Decrease Distance: "
            }
            else -> {
                "Distance OK"
            }
        }
        message += distanceString
        findViewById<TextView>(R.id.tvDistance).text = message
    }
}