谷歌 mlkit 的條碼掃描儀無法識別任何條碼

Question

所以我按照谷歌的條碼掃描儀教程（ 這個），二維碼掃描就像一個魅力。 唯一的問題是我不需要二維碼而是條形碼。 但它們不起作用。 它沒有檢測到任何東西。 我嘗試了多個在線條形碼和來自房子周圍的條形碼，但沒有一個被識別為條形碼。

這是我的活動中處理圖像和掃描儀的代碼：

public void btnClick(View v) {

    Intent imageTakeIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

    if(imageTakeIntent.resolveActivity(getPackageManager())!=null){
        startActivityForResult(imageTakeIntent, 101);
    }
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if(requestCode==101 && resultCode==RESULT_OK) {
        Bundle extras = data.getExtras();
        Bitmap imageBitmap = (Bitmap) extras.get("data");
        imageView.setImageBitmap(imageBitmap);
        image = InputImage.fromBitmap(imageBitmap, 0);
        barCodeScanning();
    }
}

public void barCodeScanning(){
    BarcodeScannerOptions options =
            new BarcodeScannerOptions.Builder()
                    .setBarcodeFormats(
                            Barcode.FORMAT_CODE_128,
                            Barcode.FORMAT_CODE_93,
                            Barcode.FORMAT_CODE_93,
                            Barcode.FORMAT_CODABAR,
                            Barcode.FORMAT_EAN_13,
                            Barcode.FORMAT_EAN_8,
                            Barcode.FORMAT_ITF,
                            Barcode.FORMAT_UPC_A,
                            Barcode.FORMAT_UPC_E,
                            Barcode.FORMAT_PDF417,
                            Barcode.FORMAT_DATA_MATRIX,
                            Barcode.FORMAT_QR_CODE,
                            Barcode.FORMAT_AZTEC)
                    .build();
    BarcodeScanner scanner = BarcodeScanning.getClient();
    Task<List<Barcode>> result = scanner.process(image)
            .addOnSuccessListener(new OnSuccessListener<List<Barcode>>() {
                @Override
                public void onSuccess(List<Barcode> barcodes) {
                    System.out.println(barcodes.size());
                    for (Barcode barcode: barcodes) {
                        Rect bounds = barcode.getBoundingBox();
                        Point[] corners = barcode.getCornerPoints();

                        String rawValue = barcode.getRawValue();
                        System.out.println(rawValue);

                        int valueType = barcode.getValueType();
                        System.out.println(valueType);
                    }
                }
            })
            .addOnFailureListener(new OnFailureListener() {
                @Override
                public void onFailure(@NonNull Exception e) {
                    e.printStackTrace();
                }
            });
}

控制台對我來說很好，除了E/libc: Access denied finding property "ro.hardware.chipname" ，它被標記為紅色，但在谷歌上沒有出現任何有用的結果。 這是完整的控制台 output：

02/26 18:29:10: Launching 'app' on HMD Global Nokia 5.3.
Install successfully finished in 2 s 230 ms.
$ adb shell am start -n "com.project.kuecheninventar/com.project.kuecheninventar.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Connected to process 28314 on device 'hmd_global-nokia_5_3-N0AA003687KA2700363'.
Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.
I/Perf: Connecting to perf service.
W/kuecheninventa: Accessing hidden method Landroid/view/View;->computeFitSystemWindows(Landroid/graphics/Rect;Landroid/graphics/Rect;)Z (greylist, reflection, allowed)
Accessing hidden method Landroid/view/ViewGroup;->makeOptionalFitsSystemWindows()V (greylist, reflection, allowed)
I/AdrenoGLES: QUALCOMM build                   : cfd6c90, Id60e6598a1
Build Date                       : 01/27/20
OpenGL ES Shader Compiler Version: EV031.27.05.03
Local Branch                     : mybranchea40f85b-21cb-f1fb-b0c0-5cb90179c3e0
Remote Branch                    : quic/gfx-adreno.lnx.1.0.r91-rel
Remote Branch                    : NONE
Reconstruct Branch               : NOTHING
Build Config                     : S P 8.0.12 AArch64
I/AdrenoGLES: PFP: 0x016ee187, ME: 0x00000000
W/Gralloc3: mapper 3.x is not supported
D/TransportRuntime.JobInfoScheduler: Scheduling upload for context TransportContext(cct, VERY_LOW, MSRodHRwczovL2ZpcmViYXNlbG9nZ2luZy5nb29nbGVhcGlzLmNvbS92MGNjL2xvZy9iYXRjaD9mb3JtYXQ9anNvbl9wcm90bzNc) with jobId=-1883559869 in 86400000ms(Backend next call timestamp 0). Attempt 1
I/DynamiteModule: Considering local module com.google.mlkit.dynamite.barcode:10000 and remote module com.google.mlkit.dynamite.barcode:0
Selected local version of com.google.mlkit.dynamite.barcode
I/tflite: Initialized TensorFlow Lite runtime.
I/native: barcode_detector_client.cc:239 Not using NNAPI
E/libc: Access denied finding property "ro.hardware.chipname"
D/TransportRuntime.SQLiteEventStore: Storing event with priority=VERY_LOW, name=FIREBASE_ML_SDK for destination cct
D/TransportRuntime.JobInfoScheduler: Upload for context TransportContext(cct, VERY_LOW, MSRodHRwczovL2ZpcmViYXNlbG9nZ2luZy5nb29nbGVhcGlzLmNvbS92MGNjL2xvZy9iYXRjaD9mb3JtYXQ9anNvbl9wcm90bzNc) is already scheduled. Returning...
I/System.out: 0
D/TransportRuntime.SQLiteEventStore: Storing event with priority=VERY_LOW, name=FIREBASE_ML_SDK for destination cct
D/TransportRuntime.JobInfoScheduler: Upload for context TransportContext(cct, VERY_LOW, MSRodHRwczovL2ZpcmViYXNlbG9nZ2luZy5nb29nbGVhcGlzLmNvbS92MGNjL2xvZy9iYXRjaD9mb3JtYXQ9anNvbl9wcm90bzNc) is already scheduled. Returning...
D/TransportRuntime.SQLiteEventStore: Storing event with priority=VERY_LOW, name=FIREBASE_ML_SDK for destination cct
D/TransportRuntime.JobInfoScheduler: Upload for context TransportContext(cct, VERY_LOW, MSRodHRwczovL2ZpcmViYXNlbG9nZ2luZy5nb29nbGVhcGlzLmNvbS92MGNjL2xvZy9iYXRjaD9mb3JtYXQ9anNvbl9wcm90bzNc) is already scheduled. Returning...
D/TransportRuntime.SQLiteEventStore: Storing event with priority=VERY_LOW, name=FIREBASE_ML_SDK for destination cct
D/TransportRuntime.JobInfoScheduler: Upload for context TransportContext(cct, VERY_LOW, MSRodHRwczovL2ZpcmViYXNlbG9nZ2luZy5nb29nbGVhcGlzLmNvbS92MGNjL2xvZy9iYXRjaD9mb3JtYXQ9anNvbl9wcm90bzNc) is already scheduled. Returning...

行System.out.println(barcodes.size()); 只打印 0 表示條形碼列表為空。 我做錯了什么或者為什么二維碼可以識別但沒有條形碼？

Answer 1

我忘記了這個問題，因為我通過另一種方式解決了。 所以這是我使用 zxing 的解決方案：在應用程序 built.gradle 中使用implementation 'com.journeyapps:zxing-android-embedded:4.1.0'

public class BarCodeScanner extends AppCompatActivity {

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        scan();
    }

    private void scan() {
        IntentIntegrator i = new IntentIntegrator(this);

        i.setDesiredBarcodeFormats(IntentIntegrator.PRODUCT_CODE_TYPES);

        i.setCaptureActivity(CaptureActivitaet.class);
        i.setOrientationLocked(false);
        i.setBeepEnabled(false);
        i.setPrompt("Scanning");
        i.initiateScan();
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        IntentResult res = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
        if (res != null) {
            if (res.getContents() != null) {
                AlertDialog.Builder builder = new AlertDialog.Builder(this);
                builder.setMessage(res.getContents());
                builder.setTitle(getString(R.string.scanComplete));
                builder.setPositiveButton(R.string.ok, (dialogInterface, i) -> {
                    setResult(RESULT_OK, new Intent().putExtra("code", res.getContents()));
                    finish();
                }).setNegativeButton(R.string.scanAgain, (dialogInterface, i) -> scan());
                AlertDialog dialog = builder.create();
                dialog.show();
            } else {
                Toast.makeText(this, "No Results", Toast.LENGTH_LONG).show();
            }
        } else {
            super.onActivityResult(requestCode, resultCode, data);
        }
    }
}

捕獲活動只是一個空活動public class CaptureActivitaet extends CaptureActivity {}盡管它必須像這樣在 Manifest 文件中配置：

    <activity
        android:name="com.project.Grocerly.UI.CaptureActivitaet"
        android:screenOrientation="fullSensor"
        android:stateNotNeeded="true"
        android:windowSoftInputMode="stateAlwaysHidden" />

這將打開一個全屏相機活動，該活動根據通過i.setDesiredBarcodeFormats(IntentIntegrator.PRODUCT_CODE_TYPES); 在scan()方法中。 如果您使用setCaptureActivity(this.class)並在清單文件中正確配置它，則可能會跳過額外的捕獲活動，但我不確定。

因為這是一個大學項目，所以這段代碼不是很漂亮，但它可以工作，這是我當時主要關心的問題。