A user launches an app and sends a request of scanning a barcode.
The app checks whether it has the camera access and file read permissions.
If the app has the permissions, HmsScanAnalyzer will be initialized.
The app converts image information into MLFrame.
The app calls the asynchronous scanning API analyzInAsyn of HmsScanAnalyzer.
The HMS Core Scan SDK calls back the onSuccess or onFailure API of the app to send the scanning result.
The app encapsulates the scanning result and sends it to the user.

Development Process

(Optional) Initialize the HmsScanAnalyzerOptions object and set the supported barcode format.

setHmsScanTypes() is an optional parameter. Set it as needed.

setHmsScanTypes(): Sets your desired barcode formats. Scan Kit with only a few barcode formats supported will scan faster. All formats supported by Scan Kit will be scanned by default.

Java
// QRCODE_SCAN_TYPE and DATAMATRIX_SCAN_TYPE are set for the barcode format, indicating that Scan Kit will support only the QR code and DataMatrix code.
HmsScanAnalyzerOptions options = new HmsScanAnalyzerOptions.Creator().setHmsScanTypes(HmsScan.QRCODE_SCAN_TYPE,HmsScan.DATAMATRIX_SCAN_TYPE).create();

Kotlin
// QRCODE_SCAN_TYPE and DATAMATRIX_SCAN_TYPE are set for the barcode format, indicating that Scan Kit will support only the QR code and DataMatrix code.
val options = HmsScanAnalyzerOptions.Creator().setHmsScanTypes(HmsScan.QRCODE_SCAN_TYPE,HmsScan.DATAMATRIX_SCAN_TYPE).create()

Initialize the HmsScanAnalyzer object. If you do not have specific barcode formats to set, set options to null here.

Java
HmsScanAnalyzer barcodeDetector = new HmsScanAnalyzer(options);

Kotlin
val barcodeDetector = HmsScanAnalyzer(options)

Convert image information into MLFrame, which is the image information class encapsulated by ML Kit.
```
Java
MLFrame image = MLFrame.fromBitmap(bitmap);
```
```
Kotlin
val image = MLFrame.fromBitmap(bitmap)
```

Call the analyzInAsyn API of HmsScanAnalyzer to initiate a scanning request and subscribe to the scanning result event. The scanning result is a data structure containing HmsScan. For details about HmsScan, please refer to Parsing Barcodes.

Java
barcodeDetector.analyzInAsyn(image).addOnSuccessListener(new OnSuccessListener<List<HmsScan>>() {
    @Override
    public void onSuccess(List<HmsScan> hmsScans) {
        if (hmsScans != null && hmsScans.size() > 0) {
            // Display the scanning result.
            ...
        }
    }
}).addOnFailureListener(new OnFailureListener() {
    @Override
    public void onFailure(Exception e) {
        String TAG = "AsyncError";
        Log.w(TAG, e);
    }
});

Kotlin
barcodeDetector.analyzInAsyn(image).addOnSuccessListener(OnSuccessListener {  
        if (hmsScans != null && it.size > 0) { 
            // Display the scanning result.
            ...
        } 
     
}).addOnFailureListener(OnFailureListener { 
     val TAG = "asyncError"
     Log.w(TAG, it)
    
})

目录

Asynchronous Mode

Service Process

Development Process