Android'de QR Kod Tarayıcı: ML Kit ile Hızlı Çözüm

1dependencies {
2implementation 'androidx.camera:camera-core:1.3.0'
3implementation 'androidx.camera:camera-camera2:1.3.0'
4implementation 'androidx.camera:camera-lifecycle:1.3.0'
5implementation 'com.google.mlkit:barcode-scanning:17.1.0'
6}

1<uses-permission android:name="android.permission.CAMERA" />

1import androidx.camera.core.CameraSelector
2import androidx.camera.core.ImageAnalysis
3import androidx.camera.lifecycle.ProcessCameraProvider
4import com.google.mlkit.vision.barcode.BarcodeScanning
5import com.google.mlkit.vision.common.InputImage
6
7class MainActivity: AppCompatActivity() {
8private lateinit var cameraProvider: ProcessCameraProvider
9private val scanner = BarcodeScanning.getClient()
10
11override fun onCreate(savedInstanceState: Bundle?) {
12super.onCreate(savedInstanceState)
13setContentView(R.layout.activity_main)
14startCamera()
15}
16
17private fun startCamera() {
18val cameraProviderFuture = ProcessCameraProvider.getInstance(this)
19cameraProviderFuture.addListener({
20cameraProvider = cameraProviderFuture.result
21val imageAnalysis = ImageAnalysis.Builder().setBackpressureStrategy(ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST).build()
22
23imageAnalysis.setAnalyzer(Executors.newSingleThreadExecutor()) { imageProxy ->
24val mediaImage = imageProxy.image
25if (mediaImage!= null) {
26val image = InputImage.fromMediaImage(mediaImage, imageProxy.imageInfo.rotationDegrees)
27scanner.process(image).addOnSuccessListener { barcodes ->
28for (barcode in barcodes) {
29Log.d("QR", "Taranmış: ${barcode.rawValue}")
30}
31}.addOnCompleteListener {
32imageProxy.close()
33}
34}
35}
36
37val preview = Preview.Builder().build()
38val cameraSelector = CameraSelector.DEFAULT_BACK_CAMERA
39preview.setSurfaceProvider(binding.previewView.surfaceProvider)
40
41cameraProvider.bindToLifecycle(this, cameraSelector, imageAnalysis, preview)
42}, ContextCompat.getMainExecutor(this))
43}
44}

1<?xml version="1.0" encoding="utf-8"?>
2<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
3android:layout_width="match_parent"
4android:layout_height="match_parent">
5<androidx.camera.view.PreviewView
6android:id="@+id/previewView"
7android:layout_width="match_parent"
8android:layout_height="match_parent" />
9</FrameLayout>