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Updated on 2026-08-14

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Tangem 2023-11-10 11:00:41 +02:00
parent 2806489bd8
commit c2a6235483
10 changed files with 293 additions and 75 deletions
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39
app/src/main/java/com/tangem/tap/common/qrCodeScan/MLKitBarcodeAnalyzer.kt Normal file
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@ -0,0 +1,39 @@
package com.tangem.tap.common.qrCodeScan
import androidx.camera.core.ExperimentalGetImage
import androidx.camera.core.ImageAnalysis
import androidx.camera.core.ImageProxy
import com.google.mlkit.vision.barcode.BarcodeScanning
import com.google.mlkit.vision.common.InputImage
class MLKitBarcodeAnalyzer(private val onScanned: (String) -> Unit) : ImageAnalysis.Analyzer {
private var isScanning: Boolean = false
@ExperimentalGetImage
override fun analyze(imageProxy: ImageProxy) {
val mediaImage = imageProxy.image
if (mediaImage != null && !isScanning) {
val image = InputImage.fromMediaImage(mediaImage, imageProxy.imageInfo.rotationDegrees)
val scanner = BarcodeScanning.getClient()
isScanning = true
scanner.process(image)
.addOnSuccessListener { codes ->
codes.firstOrNull().let { barcode ->
val rawValue = barcode?.rawValue
rawValue?.let {
onScanned.invoke(it)
}
}
isScanning = false
imageProxy.close()
}
.addOnFailureListener {
isScanning = false
imageProxy.close()
}
}
}
}

71
app/src/main/java/com/tangem/tap/common/qrCodeScan/ScanQrCodeActivity.kt
View file

@ -3,48 +3,63 @@ package com.tangem.tap.common.qrCodeScan
import android.Manifest
import android.content.Intent
import android.content.pm.PackageManager
import android.os.Build
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import androidx.camera.lifecycle.ProcessCameraProvider
import androidx.core.app.ActivityCompat
import androidx.core.content.ContextCompat
import com.google.zxing.BarcodeFormat
import com.google.zxing.Result
import by.kirich1409.viewbindingdelegate.viewBinding
import com.google.common.util.concurrent.ListenableFuture
import com.otaliastudios.cameraview.CameraView.PERMISSION_REQUEST_CODE
import me.dm7.barcodescanner.zxing.ZXingScannerView
import com.tangem.tap.features.details.ui.walletconnect.dialogs.PreviewBinder
import com.tangem.wallet.R
import com.tangem.wallet.databinding.LayoutQrScanningBinding
import java.util.concurrent.ExecutorService
import java.util.concurrent.Executors
/**
[REDACTED_AUTHOR]
*/
class ScanQrCodeActivity : AppCompatActivity(), ZXingScannerView.ResultHandler {
class ScanQrCodeActivity : AppCompatActivity() {
private lateinit var mScannerView: ZXingScannerView
private val binding: LayoutQrScanningBinding by viewBinding(LayoutQrScanningBinding::bind)
private var cameraProviderFuture: ListenableFuture<ProcessCameraProvider>? = null
private var cameraExecutor: ExecutorService? = null
private val binder = PreviewBinder()
override fun onCreate(state: Bundle?) {
super.onCreate(state)
mScannerView = ZXingScannerView(this).apply {
setFormats(listOf(BarcodeFormat.QR_CODE))
}
setContentView(mScannerView)
if (!permissionIsGranted()) requestPermission()
}
override fun onResume() {
super.onResume()
mScannerView.setResultHandler(this)
mScannerView.startCamera()
}
setContentView(R.layout.layout_qr_scanning)
override fun onPause() {
super.onPause()
mScannerView.stopCamera()
}
cameraProviderFuture = ProcessCameraProvider.getInstance(this)
cameraExecutor = Executors.newSingleThreadExecutor()
override fun handleResult(result: Result) {
setResult(SCAN_QR_REQUEST_CODE, Intent().apply { putExtra(SCAN_RESULT, result.text) })
finish()
cameraProviderFuture?.addListener(
{
val cameraProvider = cameraProviderFuture?.get()
binder.bindPreview(
context = this,
binding = binding,
lifecycleOwner = this,
cameraProvider = requireNotNull(cameraProvider),
cameraExecutor = requireNotNull(cameraExecutor),
onScanned = { result ->
setResult(SCAN_QR_REQUEST_CODE, Intent().apply { putExtra(SCAN_RESULT, result) })
finish()
},
)
},
ContextCompat.getMainExecutor(this),
)
binding.overlay.post {
binding.overlay.setViewFinder()
}
}
override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
@ -56,12 +71,8 @@ class ScanQrCodeActivity : AppCompatActivity(), ZXingScannerView.ResultHandler {
}
private fun permissionIsGranted(): Boolean {
return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
val cameraPermission = ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA)
cameraPermission == PackageManager.PERMISSION_GRANTED
} else {
true
}
val cameraPermission = ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA)
return cameraPermission == PackageManager.PERMISSION_GRANTED
}
private fun requestPermission() {

42
app/src/main/java/com/tangem/tap/common/qrCodeScan/ViewFinderOverlay.kt Normal file
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@ -0,0 +1,42 @@
package com.tangem.tap.common.qrCodeScan
import android.content.Context
import android.graphics.*
import android.util.AttributeSet
import android.view.View
import androidx.core.content.ContextCompat
import com.tangem.wallet.R
class ViewFinderOverlay(context: Context, attrs: AttributeSet) : View(context, attrs) {
private val boxPaint: Paint = Paint().apply {
color = ContextCompat.getColor(context, R.color.white)
style = Paint.Style.STROKE
strokeWidth = context.resources.getDimensionPixelOffset(R.dimen.qr_border_stroke_width).toFloat()
}
private val boxWidthRatio = 0.8F
private val boxCornerRadius: Float =
context.resources.getDimensionPixelOffset(R.dimen.qr_border_corner_radius).toFloat()
private var boxRect: RectF? = null
@Suppress("MagicNumber")
fun setViewFinder() {
val overlayWidth = width.toFloat()
val overlayHeight = height.toFloat()
val boxSize = overlayWidth * boxWidthRatio
val cx = overlayWidth / 2
val cy = overlayHeight / 2
boxRect = RectF(cx - boxSize / 2, cy - boxSize / 2, cx + boxSize / 2, cy + boxSize / 2)
invalidate()
}
override fun draw(canvas: Canvas) {
super.draw(canvas)
boxRect?.let {
canvas.drawRoundRect(it, boxCornerRadius, boxCornerRadius, boxPaint)
}
}
}

87
app/src/main/java/com/tangem/tap/features/details/ui/walletconnect/QrScanFragment.kt
View file

@ -2,26 +2,33 @@ package com.tangem.tap.features.details.ui.walletconnect
import android.Manifest
import android.content.pm.PackageManager
import android.os.Build
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.view.*
import androidx.activity.OnBackPressedCallback
import androidx.camera.lifecycle.ProcessCameraProvider
import androidx.core.content.ContextCompat
import androidx.core.view.WindowCompat
import androidx.fragment.app.Fragment
import com.google.zxing.BarcodeFormat
import com.google.zxing.Result
import by.kirich1409.viewbindingdelegate.viewBinding
import com.google.common.util.concurrent.ListenableFuture
import com.otaliastudios.cameraview.CameraView
import com.tangem.core.navigation.NavigationAction
import com.tangem.tap.features.details.redux.walletconnect.WalletConnectAction
import com.tangem.tap.features.details.ui.walletconnect.dialogs.PreviewBinder
import com.tangem.tap.store
import me.dm7.barcodescanner.zxing.ZXingScannerView
import com.tangem.wallet.R
import com.tangem.wallet.databinding.LayoutQrScanningBinding
import java.util.concurrent.ExecutorService
import java.util.concurrent.Executors
class QrScanFragment : Fragment(0), ZXingScannerView.ResultHandler {
internal class QrScanFragment : Fragment(R.layout.layout_qr_scanning) {
private var scannerView: ZXingScannerView? = null
private val binding: LayoutQrScanningBinding by viewBinding(LayoutQrScanningBinding::bind)
private val binder = PreviewBinder()
private var cameraProviderFuture: ListenableFuture<ProcessCameraProvider>? = null
private var cameraExecutor: ExecutorService? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
@ -36,25 +43,38 @@ class QrScanFragment : Fragment(0), ZXingScannerView.ResultHandler {
)
}
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
if (!permissionIsGranted()) requestPermission()
scannerView = ZXingScannerView(activity).apply {
setFormats(listOf(BarcodeFormat.QR_CODE))
cameraProviderFuture = ProcessCameraProvider.getInstance(requireContext())
cameraExecutor = Executors.newSingleThreadExecutor()
cameraProviderFuture?.addListener(
{
val cameraProvider = cameraProviderFuture?.get()
binder.bindPreview(
context = requireContext(),
binding = binding,
lifecycleOwner = this,
cameraProvider = requireNotNull(cameraProvider),
cameraExecutor = requireNotNull(cameraExecutor),
onScanned = { result ->
store.dispatch(NavigationAction.PopBackTo())
setFitSystemWindows(fit = false)
if (result.isNotBlank()) {
store.dispatch(WalletConnectAction.OpenSession(result))
}
},
)
},
ContextCompat.getMainExecutor(requireContext()),
)
binding.overlay.post {
binding.overlay.setViewFinder()
}
return scannerView
}
override fun onResume() {
super.onResume()
scannerView?.setResultHandler(this)
scannerView?.startCamera()
}
override fun onPause() {
super.onPause()
scannerView?.stopCamera()
}
override fun onDestroy() {
@ -62,14 +82,6 @@ class QrScanFragment : Fragment(0), ZXingScannerView.ResultHandler {
setFitSystemWindows(fit = false)
}
override fun handleResult(result: Result) {
store.dispatch(NavigationAction.PopBackTo())
setFitSystemWindows(fit = false)
if (!result.text.isNullOrBlank()) {
store.dispatch(WalletConnectAction.OpenSession(result.text))
}
}
override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
if (requestCode != CameraView.PERMISSION_REQUEST_CODE) return
@ -80,13 +92,8 @@ class QrScanFragment : Fragment(0), ZXingScannerView.ResultHandler {
}
private fun permissionIsGranted(): Boolean {
return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
val cameraPermission =
ContextCompat.checkSelfPermission(requireContext(), Manifest.permission.CAMERA)
cameraPermission == PackageManager.PERMISSION_GRANTED
} else {
true
}
val cameraPermission = ContextCompat.checkSelfPermission(requireContext(), Manifest.permission.CAMERA)
return cameraPermission == PackageManager.PERMISSION_GRANTED
}
private fun requestPermission() {

69
app/src/main/java/com/tangem/tap/features/details/ui/walletconnect/dialogs/PreviewBinder.kt Normal file
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@ -0,0 +1,69 @@
package com.tangem.tap.features.details.ui.walletconnect.dialogs
import android.content.Context
import android.util.Size
import android.view.OrientationEventListener
import android.view.Surface
import androidx.camera.core.CameraSelector
import androidx.camera.core.ImageAnalysis
import androidx.camera.core.Preview
import androidx.camera.lifecycle.ProcessCameraProvider
import androidx.lifecycle.LifecycleOwner
import com.tangem.tap.common.qrCodeScan.MLKitBarcodeAnalyzer
import com.tangem.wallet.databinding.LayoutQrScanningBinding
import java.util.concurrent.ExecutorService
internal class PreviewBinder {
@Suppress("LongParameterList")
fun bindPreview(
context: Context,
binding: LayoutQrScanningBinding,
lifecycleOwner: LifecycleOwner,
cameraProvider: ProcessCameraProvider,
cameraExecutor: ExecutorService,
onScanned: (String) -> Unit,
) {
cameraProvider.unbindAll()
val preview: Preview = Preview.Builder()
.build()
val imageAnalysis = ImageAnalysis.Builder()
.setTargetResolution(Size(binding.cameraPreview.width, binding.cameraPreview.height))
.setBackpressureStrategy(ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST)
.build()
val orientationEventListener = object : OrientationEventListener(context) {
@Suppress("MagicNumber")
override fun onOrientationChanged(orientation: Int) {
val rotation: Int = when (orientation) {
in 45..134 -> Surface.ROTATION_270
in 135..224 -> Surface.ROTATION_180
in 225..314 -> Surface.ROTATION_90
else -> Surface.ROTATION_0
}
imageAnalysis.targetRotation = rotation
}
}
orientationEventListener.enable()
val analyzer: ImageAnalysis.Analyzer = MLKitBarcodeAnalyzer {
imageAnalysis.clearAnalyzer()
onScanned.invoke(it)
}
cameraExecutor.let {
imageAnalysis.setAnalyzer(it, analyzer)
}
preview.setSurfaceProvider(binding.cameraPreview.surfaceProvider)
val cameraSelector: CameraSelector = CameraSelector.Builder()
.requireLensFacing(CameraSelector.LENS_FACING_BACK)
.build()
cameraProvider.bindToLifecycle(lifecycleOwner, cameraSelector, imageAnalysis, preview)
}
}