{"id":456360,"date":"2025-04-17T09:00:39","date_gmt":"2025-04-17T09:00:39","guid":{"rendered":"http:\/\/savepearlharbor.com\/?p=456360"},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-29T21:00:00","slug":"","status":"publish","type":"post","link":"https:\/\/savepearlharbor.com\/?p=456360","title":{"rendered":"<span>\u0421\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0431\u0430\u0440\u043a\u043e\u0434\u043e\u0432 c \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043a\u0430\u043c\u0435\u0440\u044b \u0438 \u0432\u043d\u0435\u0448\u043d\u0438\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 \u0432 Compose<\/span>"},"content":{"rendered":"<div><!--[--><!--]--><\/div>\n<div id=\"post-content-body\">\n<div>\n<div class=\"article-formatted-body article-formatted-body article-formatted-body_version-2\">\n<div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\">\n<p>\u0412 \u044d\u0442\u043e\u0439 \u0441\u0442\u0430\u0442\u044c\u0435 \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c, \u043a\u0430\u043a \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0431\u0430\u0440\u043a\u043e\u0434\u044b \u0432 Android- \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u0445, \u043a\u0430\u043a \u0432 Compose \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u0441 \u043a\u0430\u043c\u0435\u0440\u043e\u0439 (\u043f\u0440\u0435\u0434\u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440 \u0438 \u043b\u043e\u0433\u0438\u043a\u0430 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f), \u0430 \u0442\u0430\u043a\u0436\u0435 \u043a\u0430\u043a \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0442\u044c \u0432\u043d\u0435\u0448\u043d\u0438\u0435 \u0441\u043a\u0430\u043d\u0435\u0440\u044b, \u0432 \u0441\u0438\u0442\u0443\u0430\u0446\u0438\u044f\u0445, \u043a\u043e\u0433\u0434\u0430 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u0431\u0435\u0437 \u043a\u0430\u043c\u0435\u0440\u044b \u0438 \u043c\u044b \u043d\u0435 \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u043c \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u043e\u043c \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430<\/p>\n<h2>\u0421\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 barcode<\/h2>\n<p>\u0414\u043b\u044f \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0431\u0430\u0440\u043a\u043e\u0434\u043e\u0432 \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443 \u043e\u0442 Google barcode-scanning. \u0421\u043d\u0430\u0447\u0430\u043b\u0430 \u043d\u0443\u0436\u043d\u043e \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0438\u0442\u044c \u0435\u0451 \u043a \u043f\u0440\u043e\u0435\u043a\u0442\u0443:<\/p>\n<pre><code class=\"kotlin\">dependencies {   \/\/ ...   \/\/ Use this dependency to bundle the model with your app   implementation 'com.google.mlkit:barcode-scanning:17.3.0' } <\/code><\/pre>\n<p>\u0414\u0430\u043b\u0435\u0435 \u043d\u0443\u0436\u043d\u043e \u0443\u043a\u0430\u0437\u0430\u0442\u044c, \u043a\u0430\u043a\u0438\u0435 \u0442\u0438\u043f\u044b \u043a\u043e\u0434\u043e\u0432 \u043a\u043e\u0434\u043e\u0432 \u0431\u0443\u0434\u0435\u043c \u0441\u0447\u0438\u0442\u044b\u0432\u0430\u0442\u044c:<\/p>\n<pre><code class=\"kotlin\">val options = BarcodeScannerOptions.Builder()         .setBarcodeFormats(                 Barcode.FORMAT_QR_CODE,                 Barcode.FORMAT_AZTEC)         .build() <\/code><\/pre>\n<p>\u0422\u0438\u043f\u043e\u0432 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043c\u043d\u043e\u0433\u043e: <\/p>\n<ul>\n<li>\n<p>\u041a\u043e\u0434 128 (\u00a0FORMAT_CODE_128\u00a0)<\/p>\n<\/li>\n<li>\n<p>\u041a\u043e\u0434 39 (\u00a0FORMAT_CODE_39\u00a0)<\/p>\n<\/li>\n<li>\n<p>\u041a\u043e\u0434 93 (\u00a0FORMAT_CODE_93\u00a0)<\/p>\n<\/li>\n<li>\n<p>\u041a\u043e\u0434\u0430\u0431\u0430\u0440 (\u00a0FORMAT_CODABAR\u00a0)<\/p>\n<\/li>\n<li>\n<p>EAN-13 (\u00a0FORMAT_EAN_13\u00a0)<\/p>\n<\/li>\n<li>\n<p>EAN-8 (\u00a0FORMAT_EAN_8\u00a0)<\/p>\n<\/li>\n<li>\n<p>ITF (\u00a0FORMAT_ITF\u00a0)<\/p>\n<\/li>\n<li>\n<p>\u0421\u041a\u041f-\u0410 (\u00a0FORMAT_UPC_A\u00a0)<\/p>\n<\/li>\n<li>\n<p>UPC-E (\u00a0FORMAT_UPC_E\u00a0)<\/p>\n<\/li>\n<li>\n<p>QR-\u043a\u043e\u0434 (\u00a0FORMAT_QR_CODE\u00a0)<\/p>\n<\/li>\n<li>\n<p>PDF417 (\u00a0FORMAT_PDF417\u00a0)<\/p>\n<\/li>\n<li>\n<p>\u0410\u0446\u0442\u0435\u043a\u0441\u043a\u0438\u0439 (\u00a0FORMAT_AZTEC\u00a0)<\/p>\n<\/li>\n<li>\n<p>\u041c\u0430\u0442\u0440\u0438\u0446\u0430 \u0434\u0430\u043d\u043d\u044b\u0445 (\u00a0FORMAT_DATA_MATRIX\u00a0)<\/p>\n<\/li>\n<\/ul>\n<p>\u0422\u0435\u043f\u0435\u0440\u044c \u043d\u0443\u0436\u043d\u043e \u0441\u0434\u0435\u043b\u0430\u0442\u044c \u0441\u0432\u044f\u0437\u043a\u0443 \u043c\u0435\u0436\u0434\u0443 \u043a\u0430\u043c\u0435\u0440\u043e\u0439 \u0438 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u043e\u0439 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0431\u0430\u0440\u043a\u043e\u0434\u043e\u0432. \u0421\u0445\u0435\u043c\u0430\u0442\u0438\u0447\u043d\u043e \u0432\u044b\u0433\u043b\u044f\u0434\u0438\u0442 \u0442\u0430\u043a:<\/p>\n<figure class=\"full-width\"><img decoding=\"async\" src=\"https:\/\/habrastorage.org\/getpro\/habr\/upload_files\/41a\/c7b\/dcc\/41ac7bdcc4d225a6d0f5480c9891a918.svg\" width=\"1855\" height=\"170\" sizes=\"auto, (max-width: 780px) 100vw, 50vw\" srcset=\"https:\/\/habrastorage.org\/getpro\/habr\/upload_files\/41a\/c7b\/dcc\/41ac7bdcc4d225a6d0f5480c9891a918.svg 780w,&#10;       https:\/\/habrastorage.org\/getpro\/habr\/upload_files\/41a\/c7b\/dcc\/41ac7bdcc4d225a6d0f5480c9891a918.svg 781w\" loading=\"lazy\" decode=\"async\"\/><\/figure>\n<p>\u041f\u0440\u043e\u0449\u0435 \u0433\u043e\u0432\u043e\u0440\u044f, \u043c\u044b \u043f\u043e\u043b\u0443\u0447\u0430\u0435\u043c \u0434\u0430\u043d\u043d\u044b\u0435 \u0441 \u043a\u0430\u043c\u0435\u0440\u044b, \u043e\u0442\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u043c \u043d\u0430 \u0432\u0445\u043e\u0434 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0430\u043d\u0430\u043b\u0438\u0437\u0430 \u0431\u0430\u0440\u043a\u043e\u0434\u043e\u0432 \u0438 \u043f\u043e\u0434\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u043c\u0441\u044f \u043d\u0430 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u0435 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430, \u043f\u043e\u0441\u043b\u0435 \u0447\u0435\u0433\u043e \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u043c.<\/p>\n<p>\u0414\u043b\u044f \u043f\u0440\u0438\u043c\u0435\u0440\u0430 \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443 \u044d\u043a\u0440\u0430\u043d\u0430:<\/p>\n<figure class=\"full-width\"><img decoding=\"async\" src=\"https:\/\/habrastorage.org\/getpro\/habr\/upload_files\/78e\/ea9\/334\/78eea9334dffd7978734546108c709e1.svg\" width=\"987\" height=\"471\" sizes=\"auto, (max-width: 780px) 100vw, 50vw\" srcset=\"https:\/\/habrastorage.org\/getpro\/habr\/upload_files\/78e\/ea9\/334\/78eea9334dffd7978734546108c709e1.svg 780w,&#10;       https:\/\/habrastorage.org\/getpro\/habr\/upload_files\/78e\/ea9\/334\/78eea9334dffd7978734546108c709e1.svg 781w\" loading=\"lazy\" decode=\"async\"\/><\/figure>\n<p>\u041d\u0430 \u044d\u043a\u0440\u0430\u043d\u0435 \u043e\u0442\u043e\u0431\u0440\u0430\u0436\u0430\u0435\u0442\u0441\u044f: \u0437\u043e\u043d\u0430 \u043f\u0440\u0435\u0434\u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440\u0430 \u0441\u043a\u0430\u043d\u0435\u0440\u0430 \u0438 \u043f\u0435\u0440\u0435\u043a\u043b\u044e\u0447\u0430\u0442\u0435\u043b\u044c \u0440\u0435\u0436\u0438\u043c\u0430. \u041f\u0440\u0438 \u043d\u0430\u0436\u0430\u0442\u0438\u0438 \u043d\u0430 \u043f\u0435\u0440\u0435\u043a\u043b\u044e\u0447\u0430\u0442\u0435\u043b\u044c \u043d\u0430 \u044d\u043a\u0440\u0430\u043d \u0432\u044b\u0432\u043e\u0434\u0438\u0442\u0441\u044f \u043f\u0440\u0435\u0434\u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440 \u043a\u0430\u043c\u0435\u0440\u044b \u0438\u043b\u0438 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u0432\u043d\u0435\u0448\u043d\u0438\u043c \u0441\u043a\u0430\u043d\u0435\u0440\u043e\u043c. <\/p>\n<h2>\u0421\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043a\u0430\u043c\u0435\u0440\u044b<\/h2>\n<p>\u0420\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c, \u043a\u0430\u043a \u044d\u0442\u043e \u043e\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043a\u043e\u0434\u0430. \u0412\u043d\u0430\u0447\u0430\u043b\u0435 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0430\u0435\u043c \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443 \u043a\u0430\u043c\u0435\u0440\u044b:<\/p>\n<pre><code class=\"kotlin\">implementation(libs.androidx.camera.core) implementation(libs.androidx.camera.compose) implementation(libs.androidx.camera.lifecycle) implementation(libs.androidx.camera.camera2) <\/code><\/pre>\n<p>\u0414\u0430\u043b\u0435\u0435 \u043e\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u043c \u0440\u0430\u0431\u043e\u0442\u0443 \u0441 \u043a\u0430\u043c\u0435\u0440\u043e\u0439. \u041d\u0430\u043c \u043d\u0443\u0436\u0435\u043d \u043f\u0440\u0435\u0434\u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440 \u0432 Compose. \u0424\u0443\u043d\u043a\u0446\u0438\u044f \u0431\u0443\u0434\u0435\u0442 \u0432\u044b\u0433\u043b\u044f\u0434\u0435\u0442\u044c \u0442\u0430\u043a: <\/p>\n<pre><code class=\"kotlin\">@Composable fun CameraPreview(     modifier: Modifier = Modifier,     scaleType: PreviewView.ScaleType = PreviewView.ScaleType.FILL_CENTER,     cameraSelector: CameraSelector = CameraSelector.DEFAULT_BACK_CAMERA,     barCodeListener: (barCode: String) -&gt; Unit ) {     val coroutineScope = rememberCoroutineScope()     val context = LocalContext.current     val lifecycleOwner = LocalLifecycleOwner.current     val cameraProviderFuture =         remember(context) { ProcessCameraProvider.getInstance(context) }     val executor = remember(context) { ContextCompat.getMainExecutor(context) }     val previewView = PreviewView(context).apply {         this.scaleType = scaleType         layoutParams = ViewGroup.LayoutParams(             ViewGroup.LayoutParams.MATCH_PARENT,             ViewGroup.LayoutParams.WRAP_CONTENT         )     }       AndroidView(         modifier = modifier,         factory = { _ -&gt;             cameraProviderFuture.addListener({                  \/\/ ImageAnalysis                 imageAnalyzer = ImageAnalysis.Builder()                     .setBackpressureStrategy(ImageAnalysis.STRATEGY_BLOCK_PRODUCER)                      .build()                     .also {                         it.setAnalyzer(cameraExecutor,                             BarcodeAnalyzer() { barcode -&gt;                                 available.acquire()                                 barCodeListener(barcode)                                 available.release()                             })                     }             }, executor)              \/\/ Preview             val previewUseCase = Preview.Builder()                 .build()                 .also {                     it.setSurfaceProvider(previewView.surfaceProvider)                 }              coroutineScope.launch {                 val cameraProvider = context.getCameraProvider()                 try {                     \/\/ Must unbind the use-cases before rebinding them.                     cameraProvider.unbindAll()                      cameraProvider.bindToLifecycle(                         lifecycleOwner, cameraSelector, previewUseCase, imageAnalyzer                     )                  } catch (ex: Exception) {                     Log.e(\"CameraPreview\", \"Use case binding failed\", ex)                 }             }             previewView         }     ) } <\/code><\/pre>\n<p>\u0414\u043b\u044f \u043f\u0440\u0435\u0434\u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440\u0430 \u043a\u0430\u043c\u0435\u0440\u044b \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c \u043e\u0431\u0432\u0451\u0440\u0442\u043a\u0443 \u0441 AndroidView. \u041d\u0430 \u0442\u0435\u043a\u0443\u0449\u0438\u0439 \u043c\u043e\u043c\u0435\u043d\u0442  \u0432 \u0430\u043b\u044c\u0444\u0430-\u0432\u0435\u0440\u0441\u0438\u0438 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 camerax \u043f\u043e\u044f\u0432\u0438\u043b\u0430\u0441\u044c \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u043f\u0440\u0435\u0434\u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440 \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u043d\u0430 Compose, \u043d\u043e \u0437\u0434\u0435\u0441\u044c \u043c\u044b \u044d\u0442\u043e\u0433\u043e \u043d\u0435 \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0435\u043c.\u00a0 \u0412 \u043f\u0440\u0438\u0432\u0435\u0434\u0451\u043d\u043d\u043e\u043c \u0432\u044b\u0448\u0435 \u043f\u0440\u0438\u043c\u0435\u0440\u0435 \u043a\u043e\u0434\u0430 \u0435\u0441\u0442\u044c \u043a\u043b\u0430\u0441\u0441 <em>BarcodeAnalyzer<\/em>, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u0430 \u043b\u043e\u0433\u0438\u043a\u0430 \u0430\u043d\u0430\u043b\u0438\u0437\u0430 \u0431\u0430\u0440\u043a\u043e\u0434\u043e\u0432:<\/p>\n<pre><code class=\"kotlin\">class BarcodeAnalyzer(     val listener: (barcode: String) -&gt; Unit ) :  ImageAnalysis.Analyzer {     private var isBusy = AtomicBoolean(false)      @SuppressLint(\"UnsafeExperimentalUsageError\", \"UnsafeOptInUsageError\")     override fun analyze(image: ImageProxy) {         if (isBusy.compareAndSet(false, true)) {             image.image?.let { imageItem -&gt;                 val visionImage =                     InputImage.fromMediaImage(imageItem, image.imageInfo.rotationDegrees)                 val options = BarcodeScannerOptions.Builder().enableAllPotentialBarcodes().build()                 BarcodeScanning.getClient(options).process(visionImage)                     .addOnCompleteListener { task -&gt;                         if (task.isSuccessful) {                             task.result?.let { barcodes -&gt;                                 for (barcode in barcodes) {                                     listener(barcode.rawValue ?: \"\")                                 }                             }                         } else {                             Log.e(\"scanner\", \"failed to scan image: ${task.exception?.message}\")                         }                         image.close()                         isBusy.set(false)                     }             }         } else {             image.close()         }     } } <\/code><\/pre>\n<p>\u042d\u0442\u043e\u0442 \u043a\u043b\u0430\u0441\u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u0442 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 <em>ImageAnalysis.Analyzer <\/em>\u0432 \u043c\u0435\u0442\u043e\u0434\u0435 <em>analyze<\/em>. \u041e\u043d \u043e\u0442\u0432\u0435\u0447\u0430\u0435\u0442 \u0437\u0430 \u043b\u043e\u0433\u0438\u043a\u0443 \u0430\u043d\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430 \u0438 \u0432\u044b\u0437\u043e\u0432 callback-\u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u0443\u0441\u043f\u0435\u0445\u0430.<\/p>\n<p>\u041c\u044b \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0435\u043b\u0438 \u0440\u0430\u0431\u043e\u0442\u0443 \u0441 \u043a\u0430\u043c\u0435\u0440\u043e\u0439 \u043f\u0440\u0438 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0438 \u0431\u0430\u0440\u043a\u043e\u0434\u043e\u0432. \u0422\u0435\u043f\u0435\u0440\u044c \u0434\u043e\u0431\u0430\u0432\u0438\u043c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 \u0432\u043d\u0435\u0448\u043d\u0438\u0445 \u0441\u043a\u0430\u043d\u0435\u0440\u043e\u0432 \u0438 \u043e\u043f\u0438\u0448\u0435\u043c \u0441\u0430\u043c \u044d\u043a\u0440\u0430\u043d:\u00a0<\/p>\n<pre><code class=\"kotlin\">override fun onCreate(savedInstanceState: Bundle?) {         super.onCreate(savedInstanceState)         setContent {             var resultScan by remember { mutableStateOf(\"\") }             var usingExternalScan by remember { mutableStateOf(true) }             var scanning by remember { mutableStateOf(true) }             BarCodeScanTheme {                 Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding -&gt;                     Column(                         modifier = Modifier.padding(innerPadding),                         verticalArrangement = Arrangement.spacedBy(32.dp)                     ) {                         if (!usingExternalScan) {                             CameraPreviewScreen(                                 resultScan = { barCode -&gt;                                     if (scanning) {                                         resultScan = barCode                                         viewModel.action(ScanActions.Camera(number = barCode))                                     }                                 }                             )                         } else {                             ExternalScanner(                                 modifier = Modifier                                     .fillMaxWidth()                                     .height(350.dp),                                 result = { barCode -&gt;                                     if (scanning) {                                         resultScan = barCode                                         viewModel.action(ScanActions.External(number = barCode))                                     }                                 }                             )                          }                         Spacer(Modifier.height(100.dp))                          Text(                             modifier = Modifier.fillMaxWidth(),                             text = resultScan,                             textAlign = TextAlign.Center                         )                          ExternalScannerToggle(text = \"Using External Scanner\",                             modifier = Modifier.padding(start = 16.dp, end = 16.dp),                             callBack = { isUsing -&gt;                                 usingExternalScan = isUsing                             })                     }                 }             }              val uiState by viewModel.stateFlow.collectAsState()             when (uiState) {                 ScanState.HandlingResult -&gt; {                     scanning = false                 }                  ScanState.Scanning -&gt; {                     scanning = true                     resultScan = \"\"                 }             }         }     } } <\/code><\/pre>\n<p>\u0412 \u043d\u0430\u0448\u0435\u043c \u043f\u0440\u043e\u0441\u0442\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u0435\u0441\u0442\u044c \u043f\u0435\u0440\u0435\u043a\u043b\u044e\u0447\u0430\u0442\u0435\u043b\u044c <em>toggle<\/em>, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u0435\u043d\u044f\u0435\u0442 \u0440\u0435\u0436\u0438\u043c \u0440\u0430\u0431\u043e\u0442\u044b \u043c\u0435\u0436\u0434\u0443 \u043a\u0430\u043c\u0435\u0440\u043e\u0439 \u0438 \u0432\u043d\u0435\u0448\u043d\u0438\u043c \u0441\u043a\u0430\u043d\u0435\u0440\u043e\u043c. \u0414\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u043a\u0430\u043c\u0435\u0440\u043e\u0439 \u0432\u043d\u0430\u0447\u0430\u043b\u0435 \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u044e\u0442\u0441\u044f \u0440\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u044f, \u043f\u043e\u0441\u043b\u0435 \u0438\u0445 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u044f \u043f\u043e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u043c \u043f\u0440\u0435\u0434\u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440 \u043a\u0430\u043c\u0435\u0440\u044b. <em>State<\/em> \u0441 <em>viewModel<\/em> \u043f\u0435\u0440\u0435\u043a\u043b\u044e\u0447\u0430\u0435\u0442 \u0440\u0435\u0436\u0438\u043c\u044b: <\/p>\n<ul>\n<li>\n<p>\u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0438 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0430 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430 \u0434\u043b\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438;<\/p>\n<\/li>\n<li>\n<p>\u0438\u0433\u043d\u043e\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u044f \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f, \u043f\u043e\u043a\u0430 \u043d\u0435 \u0437\u0430\u0432\u0435\u0440\u0448\u0438\u0442\u0441\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0435\u0433\u043e, \u0447\u0442\u043e\u0431\u044b \u043d\u0435 \u0441\u043f\u0430\u043c\u0438\u0442\u044c \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a.\u00a0<\/p>\n<\/li>\n<\/ul>\n<h2>\u0421\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0432\u043d\u0435\u0448\u043d\u0435\u0433\u043e \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430<\/h2>\n<p>\u041f\u0440\u0438 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u043e\u0442 \u0432\u043d\u0435\u0448\u043d\u0435\u0433\u043e \u0441\u043a\u0430\u043d\u0435\u0440\u0430 \u043c\u044b \u043f\u0440\u043e\u0441\u0442\u043e \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u043c \u0441 \u043f\u043e\u043b\u0435\u043c \u0432\u0432\u043e\u0434\u0430, \u0447\u0430\u0449\u0435 \u0432\u0441\u0435\u0433\u043e \u0431\u0435\u0437 \u043e\u0442\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0432 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430 \u043a\u043b\u0430\u0432\u0438\u0430\u0442\u0443\u0440\u044b, \u0438 \u043f\u043e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u043c \u0442\u043e\u043b\u044c\u043a\u043e \u0432\u0432\u043e\u0434\u0438\u043c\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f. \u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440:<\/p>\n<pre><code class=\"kotlin\">@Composable fun ExternalScanner(     modifier: Modifier = Modifier,     result: (String) -&gt; Unit = {} ) {     val textValue = remember {         mutableStateOf(\"\")     }      val focusRequester = remember { FocusRequester() }      Box(         modifier = modifier             .background(color = Color.Blue)     ) {         OutlinedTextField(             value = textValue.value,             onValueChange = {                 textValue.value = it.trim()                 result.invoke(it)             },             modifier = Modifier                 .fillMaxWidth()                 .padding(16.dp)                 .align(Alignment.Center)                 .focusRequester(focusRequester),             colors = TextFieldDefaults.colors(                 focusedIndicatorColor = Color.Transparent,                 unfocusedIndicatorColor = Color.Transparent             )         )     }      LaunchedEffect(Unit) {         focusRequester.requestFocus()     } } <\/code><\/pre>\n<p>\u041f\u0440\u0438 \u0440\u0430\u0431\u043e\u0442\u0435 \u0441 \u0432\u043d\u0435\u0448\u043d\u0438\u043c \u0441\u043a\u0430\u043d\u0435\u0440\u043e\u043c \u0432\u0430\u043c, \u0441\u043a\u043e\u0440\u0435\u0439 \u0432\u0441\u0435\u0433\u043e, \u043f\u043e\u043d\u0430\u0434\u043e\u0431\u0438\u0442\u0441\u044f \u0443\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0442\u044c \u0444\u043e\u043a\u0443\u0441 \u043d\u0430 \u043f\u043e\u043b\u0435 \u0432\u0432\u043e\u0434\u0430 \u0438 \u0441\u043a\u0440\u044b\u0442\u044c \u043a\u043b\u0430\u0432\u0438\u0430\u0442\u0443\u0440\u0443 \u043f\u0440\u0438 \u0432\u0432\u043e\u0434\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0432 \u043f\u043e\u043b\u0435.\u00a0\u00a0\u0420\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c \u0432\u0438\u0434 <em>viewModel<\/em> \u043d\u0430\u0448\u0435\u0433\u043e \u044d\u043a\u0440\u0430\u043d\u0430:<\/p>\n<pre><code class=\"kotlin\">class ScanViewModel : ViewModel() {      private val _stateFlow: MutableStateFlow&lt;ScanState&gt; = MutableStateFlow(ScanState.Scanning)      val stateFlow: StateFlow&lt;ScanState&gt; = _stateFlow      private val text = MutableStateFlow(\"\")      fun action(actions: ScanActions) {         when (actions) {             is ScanActions.Camera -&gt; {                 _stateFlow.value = ScanState.HandlingResult                 viewModelScope.launch {                     handleResult()                 }             }              is ScanActions.External -&gt; {                 viewModelScope.launch {                     text.debounce(2000)                         .distinctUntilChanged()                         .collect {                             _stateFlow.value = ScanState.HandlingResult                             handleResult()                         }                 }             }         }     }      private suspend fun handleResult() {         \/\/ handler result simulation         delay(1000)         _stateFlow.value = ScanState.Scanning     } } <\/code><\/pre>\n<p>\u041f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430 \u0441 \u043a\u0430\u043c\u0435\u0440\u044b \u043c\u044b \u0438\u0433\u043d\u043e\u0440\u0438\u0440\u0443\u0435\u043c \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u0435 \u0434\u0440\u0443\u0433\u0438\u0445 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u043e\u0432 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f, \u043f\u043e\u043a\u0430 \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u043c \u0442\u0435\u043a\u0443\u0449\u0435\u0435. \u041f\u043e\u0441\u043b\u0435 \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044f \u043f\u043e\u043b\u0443\u0447\u0430\u0435\u043c \u043d\u0430 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0443 \u043d\u043e\u0432\u044b\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f.<\/p>\n<p>\u041f\u0440\u0438 \u0440\u0430\u0431\u043e\u0442\u0435 \u0441 \u0432\u043d\u0435\u0448\u043d\u0438\u043c \u0441\u043a\u0430\u043d\u0435\u0440\u043e\u043c \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e debounce \u0436\u0434\u0451\u043c \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044f \u0432\u0432\u043e\u0434\u0430 \u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0435\u043c \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0443 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430.<\/p>\n<h2>\u0420\u0435\u0437\u044e\u043c\u0435<\/h2>\n<p>\u041c\u044b \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0435\u043b\u0438 \u043b\u043e\u0433\u0438\u043a\u0443 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0431\u0430\u0440\u043a\u043e\u0434\u043e\u0432 c \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 <em>barcode-scanning<\/em> \u0432 \u0434\u0432\u0443\u0445 \u0440\u0435\u0436\u0438\u043c\u0430\u0445: \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u043e\u0439 \u043a\u0430\u043c\u0435\u0440\u044b \u0438\u043b\u0438 \u0432\u043d\u0435\u0448\u043d\u0435\u0433\u043e \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430. \u041f\u0440\u0435\u0434\u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440 \u043a\u0430\u043c\u0435\u0440\u044b \u043c\u044b \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043b\u0438 \u0441 \u043e\u0431\u0432\u0451\u0440\u0442\u043a\u043e\u0439 view \u0432 Compose, \u043d\u043e \u0441 \u0432\u044b\u0445\u043e\u0434\u043e\u043c \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 camerax \u043c\u043e\u0436\u043d\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u043d\u0430 Compose. \u041f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u0432\u043d\u0435\u0448\u043d\u0435\u0433\u043e \u0441\u043a\u0430\u043d\u0435\u0440\u0430 \u043c\u044b \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u043c \u0441 \u043e\u0431\u044b\u0447\u043d\u044b\u043c \u043f\u043e\u043b\u0435\u043c \u0432\u0432\u043e\u0434\u0430. \u041f\u0440\u0438\u043c\u0435\u0440 \u043a\u043e\u0434\u0430 \u0432\u044b\u043b\u043e\u0436\u0435\u043d <a href=\"https:\/\/github.com\/alexpereverzev\/BarCodeScan\">\u0437\u0434\u0435\u0441\u044c<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><!----><!----><\/div>\n<p><!----><!----><br \/> \u0441\u0441\u044b\u043b\u043a\u0430 \u043d\u0430 \u043e\u0440\u0438\u0433\u0438\u043d\u0430\u043b \u0441\u0442\u0430\u0442\u044c\u0438 <a href=\"https:\/\/habr.com\/ru\/articles\/901630\/\"> https:\/\/habr.com\/ru\/articles\/901630\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<div><!--[--><!--]--><\/div>\n<div id=\"post-content-body\">\n<div>\n<div class=\"article-formatted-body article-formatted-body article-formatted-body_version-2\">\n<div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\">\n<p>\u0412 \u044d\u0442\u043e\u0439 \u0441\u0442\u0430\u0442\u044c\u0435 \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c, \u043a\u0430\u043a \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0431\u0430\u0440\u043a\u043e\u0434\u044b \u0432 Android- \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u0445, \u043a\u0430\u043a \u0432 Compose \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u0441 \u043a\u0430\u043c\u0435\u0440\u043e\u0439 (\u043f\u0440\u0435\u0434\u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440 \u0438 \u043b\u043e\u0433\u0438\u043a\u0430 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f), \u0430 \u0442\u0430\u043a\u0436\u0435 \u043a\u0430\u043a \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0442\u044c \u0432\u043d\u0435\u0448\u043d\u0438\u0435 \u0441\u043a\u0430\u043d\u0435\u0440\u044b, \u0432 \u0441\u0438\u0442\u0443\u0430\u0446\u0438\u044f\u0445, \u043a\u043e\u0433\u0434\u0430 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u0431\u0435\u0437 \u043a\u0430\u043c\u0435\u0440\u044b \u0438 \u043c\u044b \u043d\u0435 \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u043c \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u043e\u043c \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430<\/p>\n<h2>\u0421\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 barcode<\/h2>\n<p>\u0414\u043b\u044f \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0431\u0430\u0440\u043a\u043e\u0434\u043e\u0432 \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443 \u043e\u0442 Google barcode-scanning. \u0421\u043d\u0430\u0447\u0430\u043b\u0430 \u043d\u0443\u0436\u043d\u043e \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0438\u0442\u044c \u0435\u0451 \u043a \u043f\u0440\u043e\u0435\u043a\u0442\u0443:<\/p>\n<pre><code class=\"kotlin\">dependencies {   \/\/ ...   \/\/ Use this dependency to bundle the model with your app   implementation 'com.google.mlkit:barcode-scanning:17.3.0' } <\/code><\/pre>\n<p>\u0414\u0430\u043b\u0435\u0435 \u043d\u0443\u0436\u043d\u043e \u0443\u043a\u0430\u0437\u0430\u0442\u044c, \u043a\u0430\u043a\u0438\u0435 \u0442\u0438\u043f\u044b \u043a\u043e\u0434\u043e\u0432 \u043a\u043e\u0434\u043e\u0432 \u0431\u0443\u0434\u0435\u043c \u0441\u0447\u0438\u0442\u044b\u0432\u0430\u0442\u044c:<\/p>\n<pre><code class=\"kotlin\">val options = BarcodeScannerOptions.Builder()         .setBarcodeFormats(                 Barcode.FORMAT_QR_CODE,                 Barcode.FORMAT_AZTEC)         .build() <\/code><\/pre>\n<p>\u0422\u0438\u043f\u043e\u0432 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043c\u043d\u043e\u0433\u043e: <\/p>\n<ul>\n<li>\n<p>\u041a\u043e\u0434 128 (\u00a0FORMAT_CODE_128\u00a0)<\/p>\n<\/li>\n<li>\n<p>\u041a\u043e\u0434 39 (\u00a0FORMAT_CODE_39\u00a0)<\/p>\n<\/li>\n<li>\n<p>\u041a\u043e\u0434 93 (\u00a0FORMAT_CODE_93\u00a0)<\/p>\n<\/li>\n<li>\n<p>\u041a\u043e\u0434\u0430\u0431\u0430\u0440 (\u00a0FORMAT_CODABAR\u00a0)<\/p>\n<\/li>\n<li>\n<p>EAN-13 (\u00a0FORMAT_EAN_13\u00a0)<\/p>\n<\/li>\n<li>\n<p>EAN-8 (\u00a0FORMAT_EAN_8\u00a0)<\/p>\n<\/li>\n<li>\n<p>ITF (\u00a0FORMAT_ITF\u00a0)<\/p>\n<\/li>\n<li>\n<p>\u0421\u041a\u041f-\u0410 (\u00a0FORMAT_UPC_A\u00a0)<\/p>\n<\/li>\n<li>\n<p>UPC-E (\u00a0FORMAT_UPC_E\u00a0)<\/p>\n<\/li>\n<li>\n<p>QR-\u043a\u043e\u0434 (\u00a0FORMAT_QR_CODE\u00a0)<\/p>\n<\/li>\n<li>\n<p>PDF417 (\u00a0FORMAT_PDF417\u00a0)<\/p>\n<\/li>\n<li>\n<p>\u0410\u0446\u0442\u0435\u043a\u0441\u043a\u0438\u0439 (\u00a0FORMAT_AZTEC\u00a0)<\/p>\n<\/li>\n<li>\n<p>\u041c\u0430\u0442\u0440\u0438\u0446\u0430 \u0434\u0430\u043d\u043d\u044b\u0445 (\u00a0FORMAT_DATA_MATRIX\u00a0)<\/p>\n<\/li>\n<\/ul>\n<p>\u0422\u0435\u043f\u0435\u0440\u044c \u043d\u0443\u0436\u043d\u043e \u0441\u0434\u0435\u043b\u0430\u0442\u044c \u0441\u0432\u044f\u0437\u043a\u0443 \u043c\u0435\u0436\u0434\u0443 \u043a\u0430\u043c\u0435\u0440\u043e\u0439 \u0438 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u043e\u0439 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0431\u0430\u0440\u043a\u043e\u0434\u043e\u0432. \u0421\u0445\u0435\u043c\u0430\u0442\u0438\u0447\u043d\u043e \u0432\u044b\u0433\u043b\u044f\u0434\u0438\u0442 \u0442\u0430\u043a:<\/p>\n<figure class=\"full-width\"><\/figure>\n<p>\u041f\u0440\u043e\u0449\u0435 \u0433\u043e\u0432\u043e\u0440\u044f, \u043c\u044b \u043f\u043e\u043b\u0443\u0447\u0430\u0435\u043c \u0434\u0430\u043d\u043d\u044b\u0435 \u0441 \u043a\u0430\u043c\u0435\u0440\u044b, \u043e\u0442\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u043c \u043d\u0430 \u0432\u0445\u043e\u0434 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0430\u043d\u0430\u043b\u0438\u0437\u0430 \u0431\u0430\u0440\u043a\u043e\u0434\u043e\u0432 \u0438 \u043f\u043e\u0434\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u043c\u0441\u044f \u043d\u0430 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u0435 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430, \u043f\u043e\u0441\u043b\u0435 \u0447\u0435\u0433\u043e \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u043c.<\/p>\n<p>\u0414\u043b\u044f \u043f\u0440\u0438\u043c\u0435\u0440\u0430 \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443 \u044d\u043a\u0440\u0430\u043d\u0430:<\/p>\n<figure class=\"full-width\"><\/figure>\n<p>\u041d\u0430 \u044d\u043a\u0440\u0430\u043d\u0435 \u043e\u0442\u043e\u0431\u0440\u0430\u0436\u0430\u0435\u0442\u0441\u044f: \u0437\u043e\u043d\u0430 \u043f\u0440\u0435\u0434\u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440\u0430 \u0441\u043a\u0430\u043d\u0435\u0440\u0430 \u0438 \u043f\u0435\u0440\u0435\u043a\u043b\u044e\u0447\u0430\u0442\u0435\u043b\u044c \u0440\u0435\u0436\u0438\u043c\u0430. \u041f\u0440\u0438 \u043d\u0430\u0436\u0430\u0442\u0438\u0438 \u043d\u0430 \u043f\u0435\u0440\u0435\u043a\u043b\u044e\u0447\u0430\u0442\u0435\u043b\u044c \u043d\u0430 \u044d\u043a\u0440\u0430\u043d \u0432\u044b\u0432\u043e\u0434\u0438\u0442\u0441\u044f \u043f\u0440\u0435\u0434\u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440 \u043a\u0430\u043c\u0435\u0440\u044b \u0438\u043b\u0438 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u0432\u043d\u0435\u0448\u043d\u0438\u043c \u0441\u043a\u0430\u043d\u0435\u0440\u043e\u043c. <\/p>\n<h2>\u0421\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043a\u0430\u043c\u0435\u0440\u044b<\/h2>\n<p>\u0420\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c, \u043a\u0430\u043a \u044d\u0442\u043e \u043e\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043a\u043e\u0434\u0430. \u0412\u043d\u0430\u0447\u0430\u043b\u0435 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0430\u0435\u043c \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443 \u043a\u0430\u043c\u0435\u0440\u044b:<\/p>\n<pre><code class=\"kotlin\">implementation(libs.androidx.camera.core) implementation(libs.androidx.camera.compose) implementation(libs.androidx.camera.lifecycle) implementation(libs.androidx.camera.camera2) <\/code><\/pre>\n<p>\u0414\u0430\u043b\u0435\u0435 \u043e\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u043c \u0440\u0430\u0431\u043e\u0442\u0443 \u0441 \u043a\u0430\u043c\u0435\u0440\u043e\u0439. \u041d\u0430\u043c \u043d\u0443\u0436\u0435\u043d \u043f\u0440\u0435\u0434\u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440 \u0432 Compose. \u0424\u0443\u043d\u043a\u0446\u0438\u044f \u0431\u0443\u0434\u0435\u0442 \u0432\u044b\u0433\u043b\u044f\u0434\u0435\u0442\u044c \u0442\u0430\u043a: <\/p>\n<pre><code class=\"kotlin\">@Composable fun CameraPreview(     modifier: Modifier = Modifier,     scaleType: PreviewView.ScaleType = PreviewView.ScaleType.FILL_CENTER,     cameraSelector: CameraSelector = CameraSelector.DEFAULT_BACK_CAMERA,     barCodeListener: (barCode: String) -&gt; Unit ) {     val coroutineScope = rememberCoroutineScope()     val context = LocalContext.current     val lifecycleOwner = LocalLifecycleOwner.current     val cameraProviderFuture =         remember(context) { ProcessCameraProvider.getInstance(context) }     val executor = remember(context) { ContextCompat.getMainExecutor(context) }     val previewView = PreviewView(context).apply {         this.scaleType = scaleType         layoutParams = ViewGroup.LayoutParams(             ViewGroup.LayoutParams.MATCH_PARENT,             ViewGroup.LayoutParams.WRAP_CONTENT         )     }       AndroidView(         modifier = modifier,         factory = { _ -&gt;             cameraProviderFuture.addListener({                  \/\/ ImageAnalysis                 imageAnalyzer = ImageAnalysis.Builder()                     .setBackpressureStrategy(ImageAnalysis.STRATEGY_BLOCK_PRODUCER)                      .build()                     .also {                         it.setAnalyzer(cameraExecutor,                             BarcodeAnalyzer() { barcode -&gt;                                 available.acquire()                                 barCodeListener(barcode)                                 available.release()                             })                     }             }, executor)              \/\/ Preview             val previewUseCase = Preview.Builder()                 .build()                 .also {                     it.setSurfaceProvider(previewView.surfaceProvider)                 }              coroutineScope.launch {                 val cameraProvider = context.getCameraProvider()                 try {                     \/\/ Must unbind the use-cases before rebinding them.                     cameraProvider.unbindAll()                      cameraProvider.bindToLifecycle(                         lifecycleOwner, cameraSelector, previewUseCase, imageAnalyzer                     )                  } catch (ex: Exception) {                     Log.e(\"CameraPreview\", \"Use case binding failed\", ex)                 }             }             previewView         }     ) } <\/code><\/pre>\n<p>\u0414\u043b\u044f \u043f\u0440\u0435\u0434\u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440\u0430 \u043a\u0430\u043c\u0435\u0440\u044b \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c \u043e\u0431\u0432\u0451\u0440\u0442\u043a\u0443 \u0441 AndroidView. \u041d\u0430 \u0442\u0435\u043a\u0443\u0449\u0438\u0439 \u043c\u043e\u043c\u0435\u043d\u0442  \u0432 \u0430\u043b\u044c\u0444\u0430-\u0432\u0435\u0440\u0441\u0438\u0438 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 camerax \u043f\u043e\u044f\u0432\u0438\u043b\u0430\u0441\u044c \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u043f\u0440\u0435\u0434\u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440 \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u043d\u0430 Compose, \u043d\u043e \u0437\u0434\u0435\u0441\u044c \u043c\u044b \u044d\u0442\u043e\u0433\u043e \u043d\u0435 \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0435\u043c.\u00a0 \u0412 \u043f\u0440\u0438\u0432\u0435\u0434\u0451\u043d\u043d\u043e\u043c \u0432\u044b\u0448\u0435 \u043f\u0440\u0438\u043c\u0435\u0440\u0435 \u043a\u043e\u0434\u0430 \u0435\u0441\u0442\u044c \u043a\u043b\u0430\u0441\u0441 <em>BarcodeAnalyzer<\/em>, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u0430 \u043b\u043e\u0433\u0438\u043a\u0430 \u0430\u043d\u0430\u043b\u0438\u0437\u0430 \u0431\u0430\u0440\u043a\u043e\u0434\u043e\u0432:<\/p>\n<pre><code class=\"kotlin\">class BarcodeAnalyzer(     val listener: (barcode: String) -&gt; Unit ) :  ImageAnalysis.Analyzer {     private var isBusy = AtomicBoolean(false)      @SuppressLint(\"UnsafeExperimentalUsageError\", \"UnsafeOptInUsageError\")     override fun analyze(image: ImageProxy) {         if (isBusy.compareAndSet(false, true)) {             image.image?.let { imageItem -&gt;                 val visionImage =                     InputImage.fromMediaImage(imageItem, image.imageInfo.rotationDegrees)                 val options = BarcodeScannerOptions.Builder().enableAllPotentialBarcodes().build()                 BarcodeScanning.getClient(options).process(visionImage)                     .addOnCompleteListener { task -&gt;                         if (task.isSuccessful) {                             task.result?.let { barcodes -&gt;                                 for (barcode in barcodes) {                                     listener(barcode.rawValue ?: \"\")                                 }                             }                         } else {                             Log.e(\"scanner\", \"failed to scan image: ${task.exception?.message}\")                         }                         image.close()                         isBusy.set(false)                     }             }         } else {             image.close()         }     } } <\/code><\/pre>\n<p>\u042d\u0442\u043e\u0442 \u043a\u043b\u0430\u0441\u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u0442 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 <em>ImageAnalysis.Analyzer <\/em>\u0432 \u043c\u0435\u0442\u043e\u0434\u0435 <em>analyze<\/em>. \u041e\u043d \u043e\u0442\u0432\u0435\u0447\u0430\u0435\u0442 \u0437\u0430 \u043b\u043e\u0433\u0438\u043a\u0443 \u0430\u043d\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430 \u0438 \u0432\u044b\u0437\u043e\u0432 callback-\u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u0443\u0441\u043f\u0435\u0445\u0430.<\/p>\n<p>\u041c\u044b \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0435\u043b\u0438 \u0440\u0430\u0431\u043e\u0442\u0443 \u0441 \u043a\u0430\u043c\u0435\u0440\u043e\u0439 \u043f\u0440\u0438 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0438 \u0431\u0430\u0440\u043a\u043e\u0434\u043e\u0432. \u0422\u0435\u043f\u0435\u0440\u044c \u0434\u043e\u0431\u0430\u0432\u0438\u043c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 \u0432\u043d\u0435\u0448\u043d\u0438\u0445 \u0441\u043a\u0430\u043d\u0435\u0440\u043e\u0432 \u0438 \u043e\u043f\u0438\u0448\u0435\u043c \u0441\u0430\u043c \u044d\u043a\u0440\u0430\u043d:\u00a0<\/p>\n<pre><code class=\"kotlin\">override fun onCreate(savedInstanceState: Bundle?) {         super.onCreate(savedInstanceState)         setContent {             var resultScan by remember { mutableStateOf(\"\") }             var usingExternalScan by remember { mutableStateOf(true) }             var scanning by remember { mutableStateOf(true) }             BarCodeScanTheme {                 Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding -&gt;                     Column(                         modifier = Modifier.padding(innerPadding),                         verticalArrangement = Arrangement.spacedBy(32.dp)                     ) {                         if (!usingExternalScan) {                             CameraPreviewScreen(                                 resultScan = { barCode -&gt;                                     if (scanning) {                                         resultScan = barCode                                         viewModel.action(ScanActions.Camera(number = barCode))                                     }                                 }                             )                         } else {                             ExternalScanner(                                 modifier = Modifier                                     .fillMaxWidth()                                     .height(350.dp),                                 result = { barCode -&gt;                                     if (scanning) {                                         resultScan = barCode                                         viewModel.action(ScanActions.External(number = barCode))                                     }                                 }                             )                          }                         Spacer(Modifier.height(100.dp))                          Text(                             modifier = Modifier.fillMaxWidth(),                             text = resultScan,                             textAlign = TextAlign.Center                         )                          ExternalScannerToggle(text = \"Using External Scanner\",                             modifier = Modifier.padding(start = 16.dp, end = 16.dp),                             callBack = { isUsing -&gt;                                 usingExternalScan = isUsing                             })                     }                 }             }              val uiState by viewModel.stateFlow.collectAsState()             when (uiState) {                 ScanState.HandlingResult -&gt; {                     scanning = false                 }                  ScanState.Scanning -&gt; {                     scanning = true                     resultScan = \"\"                 }             }         }     } } <\/code><\/pre>\n<p>\u0412 \u043d\u0430\u0448\u0435\u043c \u043f\u0440\u043e\u0441\u0442\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u0435\u0441\u0442\u044c \u043f\u0435\u0440\u0435\u043a\u043b\u044e\u0447\u0430\u0442\u0435\u043b\u044c <em>toggle<\/em>, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u0435\u043d\u044f\u0435\u0442 \u0440\u0435\u0436\u0438\u043c \u0440\u0430\u0431\u043e\u0442\u044b \u043c\u0435\u0436\u0434\u0443 \u043a\u0430\u043c\u0435\u0440\u043e\u0439 \u0438 \u0432\u043d\u0435\u0448\u043d\u0438\u043c \u0441\u043a\u0430\u043d\u0435\u0440\u043e\u043c. \u0414\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u043a\u0430\u043c\u0435\u0440\u043e\u0439 \u0432\u043d\u0430\u0447\u0430\u043b\u0435 \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u044e\u0442\u0441\u044f \u0440\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u044f, \u043f\u043e\u0441\u043b\u0435 \u0438\u0445 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u044f \u043f\u043e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u043c \u043f\u0440\u0435\u0434\u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440 \u043a\u0430\u043c\u0435\u0440\u044b. <em>State<\/em> \u0441 <em>viewModel<\/em> \u043f\u0435\u0440\u0435\u043a\u043b\u044e\u0447\u0430\u0435\u0442 \u0440\u0435\u0436\u0438\u043c\u044b: <\/p>\n<ul>\n<li>\n<p>\u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0438 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0430 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430 \u0434\u043b\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438;<\/p>\n<\/li>\n<li>\n<p>\u0438\u0433\u043d\u043e\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u044f \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f, \u043f\u043e\u043a\u0430 \u043d\u0435 \u0437\u0430\u0432\u0435\u0440\u0448\u0438\u0442\u0441\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0435\u0433\u043e, \u0447\u0442\u043e\u0431\u044b \u043d\u0435 \u0441\u043f\u0430\u043c\u0438\u0442\u044c \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a.\u00a0<\/p>\n<\/li>\n<\/ul>\n<h2>\u0421\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0432\u043d\u0435\u0448\u043d\u0435\u0433\u043e \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430<\/h2>\n<p>\u041f\u0440\u0438 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u043e\u0442 \u0432\u043d\u0435\u0448\u043d\u0435\u0433\u043e \u0441\u043a\u0430\u043d\u0435\u0440\u0430 \u043c\u044b \u043f\u0440\u043e\u0441\u0442\u043e \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u043c \u0441 \u043f\u043e\u043b\u0435\u043c \u0432\u0432\u043e\u0434\u0430, \u0447\u0430\u0449\u0435 \u0432\u0441\u0435\u0433\u043e \u0431\u0435\u0437 \u043e\u0442\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0432 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430 \u043a\u043b\u0430\u0432\u0438\u0430\u0442\u0443\u0440\u044b, \u0438 \u043f\u043e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u043c \u0442\u043e\u043b\u044c\u043a\u043e \u0432\u0432\u043e\u0434\u0438\u043c\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f. \u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440:<\/p>\n<pre><code class=\"kotlin\">@Composable fun ExternalScanner(     modifier: Modifier = Modifier,     result: (String) -&gt; Unit = {} ) {     val textValue = remember {         mutableStateOf(\"\")     }      val focusRequester = remember { FocusRequester() }      Box(         modifier = modifier             .background(color = Color.Blue)     ) {<\/code><\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-456360","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts\/456360","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=456360"}],"version-history":[{"count":0,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts\/456360\/revisions"}],"wp:attachment":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=456360"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=456360"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=456360"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}