Google Code Scanner API มีโซลูชันที่สมบูรณ์สำหรับการสแกนโค้ดโดยไม่ต้องให้แอปขอสิทธิ์เข้าถึงกล้อง ในขณะที่ยังคงรักษาความเป็นส่วนตัวของผู้ใช้ ซึ่งทำได้โดยมอบหมายงานการสแกนโค้ดให้
บริการ Google Play และส่งคืนเฉพาะผลการสแกนไปยังแอปของคุณ (วิดีโอ 1)
การประมวลผลรูปภาพทั้งหมดจะเกิดขึ้นในอุปกรณ์และ Google จะไม่จัดเก็บผลลัพธ์
หรือข้อมูลรูปภาพ API รองรับรูปแบบโค้ดเดียวกันกับ ML Kit Barcode Scanning API และแสดงผลออบเจ็กต์ Barcode เดียวกัน
API นี้เหมาะสำหรับแอปที่ต้องการการสแกนโค้ดที่ราบรื่นโดยไม่จำเป็นต้องมี UI หรือประสบการณ์การใช้งานกล้องที่กำหนดเอง
การติดตั้งใช้งานจะอยู่ในบริการ Google Play ทั้งหมด ซึ่งช่วยให้มั่นใจได้ว่าแอปจะมีขนาดเพิ่มขึ้นน้อยที่สุด
นอกจากนี้ คุณยังตรวจสอบความพร้อมใช้งานของโมดูลสแกนเนอร์และขอ
ดาวน์โหลดผ่าน ModuleInstallClient
API ของบริการ Google Play ได้ด้วย
หากคุณไม่ได้เปิดใช้การดาวน์โหลดโมดูล ณ เวลาติดตั้งหรือขอการดาวน์โหลดที่ชัดเจน
และยังไม่ได้ติดตั้งโมดูลสแกนเนอร์สำหรับกรณีการใช้งานอื่น
บริการ Google Play จะดาวน์โหลดโมดูลสแกนเนอร์ในครั้งแรกที่มีการใช้งาน
valoptions=GmsBarcodeScannerOptions.Builder().setBarcodeFormats(...).enableAutoZoom()// available on 16.1.0 and higher.build()
Java
GmsBarcodeScannerOptionsoptions=newGmsBarcodeScannerOptions.Builder().setBarcodeFormats(...).enableAutoZoom()// available on 16.1.0 and higher.build();
valscanner=GmsBarcodeScanning.getClient(this)// Or with a configured options// val scanner = GmsBarcodeScanning.getClient(this, options)
Java
GmsBarcodeScannerscanner=GmsBarcodeScanning.getClient(this);// Or with a configured options// GmsBarcodeScanner scanner = GmsBarcodeScanning.getClient(context, options);
[null,null,["อัปเดตล่าสุด 2025-09-04 UTC"],[[["\u003cp\u003eThe Google Code Scanner API enables code scanning without requiring camera permission, preserving user privacy by delegating the task to Google Play services.\u003c/p\u003e\n"],["\u003cp\u003eIt supports various code formats, returns a \u003ccode\u003eBarcode\u003c/code\u003e object, and is ideal for apps needing seamless code scanning without a custom UI.\u003c/p\u003e\n"],["\u003cp\u003eAuto-zoom, available from version 16.1.0, automatically zooms in on barcodes, eliminating the need for manual adjustments and making scanning faster and more accurate.\u003c/p\u003e\n"],["\u003cp\u003eThe API uses an unbundled library downloaded before use and requires Android API level 21 or higher.\u003c/p\u003e\n"],["\u003cp\u003eFor complex use cases requiring a custom UI, the ML Kit Barcode Scanning API is recommended.\u003c/p\u003e\n"]]],[],null,["The Google code scanner API provides a complete solution for scanning code\nwithout requiring your app to request camera permission, while preserving user\nprivacy. This is accomplished by delegating the task of scanning the code to\nGoogle Play services and returning only the scan results to your app (Video 1).\nAll image processing occurs on the device and Google doesn't store the results\nor image data. The API supports the same code formats as the\n[ML Kit Barcode Scanning API](/ml-kit/vision/barcode-scanning) and returns the\nsame [`Barcode`](/android/reference/com/google/mlkit/vision/barcode/common/Barcode)\nobject.\n\nThis API is ideal for apps that require seamless code scanning without the need\nfor a custom UI or camera experience. The implementation resides entirely within\nGoogle Play services, ensuring minimal impact on the size of your app.\n\nStarting with version 16.1.0, you can enable auto-zoom to allow the Google code\nscanner to automatically scan barcodes that are far away from the camera. When\nusers point their devices at a barcode, the scanner will intelligently detect\nand zoom in on the barcode. This eliminates the need for manual zoom\nadjustments, making barcode scanning faster, more accurate and more accessible\n(see Video 2).\n\n|------------------------------------------|---------------------------|\n| | |\n| Video 1. Google code scanner integration | Video 2. Auto-zoom effect |\n\n\u003cbr /\u003e\n\nFor more complex use cases that require a custom UI, we recommend using the\n[ML Kit Barcode Scanning API](/ml-kit/vision/barcode-scanning) directly.\n\nIf you have questions, want to submit a bug, or need assistance, check the\n[ML Kit community page](/ml-kit/community).\n| This API uses an unbundled library that must be downloaded before use. See [this guide](/ml-kit/tips/installation-paths) for more information.\n\nBefore you begin This API requires Android API level 21 or above. Make sure that your app's build file uses a `minSdkVersion` value of 21 or higher.\n\nTo prepare your app, complete the steps in the following sections.\n\nConfigure your app\n\n1. In your top-level `settings.gradle` file, include\n [Google's Maven repository](https://maven.google.com/web/index.html) and\n [Maven central repository](https://search.maven.org/artifact) in under the\n `dependencyResolutionManagement` block:\n\n dependencyResolutionManagement {\n repositories {\n google()\n mavenCentral()\n }\n }\n\n2. Add the Google Play services dependency for the `play-services-code-scanner`\n SDK to your module's Gradle build file, which is commonly `app/build.gradle`:\n\n dependencies {\n implementation 'com.google.android.gms:play-services-code-scanner:16.1.0'\n }\n\n3. You can configure your app to have Google Play services automatically\n download the scanner module to the device while your app is installed from\n the Play Store.\n\n \u003capplication ...\u003e\n ...\n \u003cmeta-data\n android:name=\"com.google.mlkit.vision.DEPENDENCIES\"\n android:value=\"barcode_ui\"/\u003e\n ...\n \u003c/application\u003e\n\n You can also explicitly check the scanner module availability and request\n download through Google Play services [ModuleInstallClient\n API](https://developers.google.com/android/guides/module-install-apis).\n\n If you don't enable install-time module downloads or request explicit\n downloads---and the scanner module isn't already installed for another\n use case---Google Play services downloads the scanner module the first\n time it's used.\n\nScan a code\n\nImplement the following steps to scan a barcode.\n\n1. Optional: Configure the code scanner.\n\n If you know which barcode formats you expect to read, you can improve the\n speed of the barcode detector by configuring it to only detect those\n formats. For example, to detect only Aztec code and QR codes, build a\n [`GmsBarcodeScannerOptions`](/android/reference/com/google/mlkit/vision/codescanner/GmsBarcodeScannerOptions.Builder)\n object as in the following example: \n\n Kotlin \n\n ```kotlin\n val options = GmsBarcodeScannerOptions.Builder()\n .setBarcodeFormats(\n Barcode.FORMAT_QR_CODE,\n Barcode.FORMAT_AZTEC)\n .build()\n ```\n\n Java \n\n ```java\n GmsBarcodeScannerOptions options = new GmsBarcodeScannerOptions.Builder()\n .setBarcodeFormats(\n Barcode.FORMAT_QR_CODE,\n Barcode.FORMAT_AZTEC)\n .build();\n ```\n\n By default, auto-zoom is turned off. To enable auto-zoom functionality\n starting in version 16.1.0, call `enableAutoZoom()` as shown in the\n following code example. \n\n Kotlin \n\n ```kotlin\n val options = GmsBarcodeScannerOptions.Builder()\n .setBarcodeFormats(...)\n .enableAutoZoom() // available on 16.1.0 and higher\n .build()\n ```\n\n Java \n\n ```java\n GmsBarcodeScannerOptions options = new GmsBarcodeScannerOptions.Builder()\n .setBarcodeFormats(...)\n .enableAutoZoom() // available on 16.1.0 and higher\n .build();\n ```\n2. Get an instance of [`GmsBarcodeScanner`](/android/reference/com/google/mlkit/vision/codescanner/GmsBarcodeScanner),\n as shown in the code example:\n\n Kotlin \n\n ```kotlin\n val scanner = GmsBarcodeScanning.getClient(this)\n // Or with a configured options\n // val scanner = GmsBarcodeScanning.getClient(this, options)\n ```\n\n Java \n\n ```java\n GmsBarcodeScanner scanner = GmsBarcodeScanning.getClient(this);\n // Or with a configured options\n // GmsBarcodeScanner scanner = GmsBarcodeScanning.getClient(context, options);\n ```\n3. Request a code scanning by calling [`startScan()`](/android/reference/com/google/mlkit/vision/codescanner/GmsBarcodeScanner#startScan()).\n\n Kotlin \n\n ```kotlin\n scanner.startScan()\n .addOnSuccessListener { barcode -\u003e\n // Task completed successfully\n }\n .addOnCanceledListener {\n // Task canceled\n }\n .addOnFailureListener { e -\u003e\n // Task failed with an exception\n }\n ```\n\n Java \n\n ```java\n scanner\n .startScan()\n .addOnSuccessListener(\n barcode -\u003e {\n // Task completed successfully\n })\n .addOnCanceledListener(\n () -\u003e {\n // Task canceled\n })\n .addOnFailureListener(\n e -\u003e {\n // Task failed with an exception\n });\n ```\n4. Handle the resulting [`Barcode`](/android/reference/com/google/mlkit/vision/barcode/common/Barcode).\n\n Kotlin \n\n ```kotlin\n val rawValue: String? = barcode.rawValue\n ```\n\n Java \n\n ```java\n String rawValue = barcode.getRawValue();\n ```"]]
