xt / Flutter-ReserveApp · Files

flutter_barcode_scanner_ohos

flutter_barcode_scanner_ohos is a plugin for Flutter apps that adds barcode scanning support on ohos.

How to use ?

To use on ohos, you will need to add the camera permission in module.json5.

Open entry/src/main/module.json5 and add the following information:

...
"requestPermissions": [
+  {
+    "name": "ohos.permission.CAMERA",
+    "reason": "$string:camera_reason",
+    "usedScene": {
+      "abilities": [
+        "EntryAbility"
+      ],
+      "when":"inuse"
+    }
+  }
]

Add the reason for applying for the preceding permission to the entry directory.

Open entry/src/main/resources/base/element/string.json and add the following information:

...
{
  "string": [
+    {
+      "name": "camera_reason",
+      "value": "camera_reason"
+    }
  ]
}

Usage

Go to the project directory and add the following dependencies in pubspec.yaml

pubspec.yaml

...

dependencies:
  flutter_barcode_scanner_ohos:
    git: 
      url: https://gitcode.com/openharmony-sig/fluttertpc_flutter_barcode_scanner.git
      path: ohos

...

Execute Command

flutter pub get

One time scan

1. You need to import the package first.

import 'package:flutter_barcode_scanner_ohos/flutter_barcode_scanner.dart';

1. Then use the scanBarcode method to access barcode scanning.

String barcodeScanRes = await FlutterBarcodeScanner.scanBarcode(
                                                    COLOR_CODE, 
                                                    CANCEL_BUTTON_TEXT, 
                                                    isShowFlashIcon, 
                                                    scanMode);

Here in scanBarcode,

COLOR_CODE is hex-color which is the color of line in barcode overlay you can pass color of your choice,

CANCEL_BUTTON_TEXT is a text of cancel button on screen you can pass text of your choice and language,

isShowFlashIcon is bool value used to show or hide the flash icon,

scanMode is a enum in which user can pass any of { QR, BARCODE, DEFAULT }, if nothing is passed it will consider a default value which will be QR. It shows the graphics overlay like for barcode and QR.

NOTE: Currently, scanMode is just to show the graphics overlay for barcode and QR. Any of this mode selected will scan both QR and barcode.

Continuous scan

• If you need to scan barcodes continuously without closing camera use FlutterBarcodeScanner.getBarcodeStreamReceiver params will be same like FlutterBarcodeScanner.scanBarcode e.g.

FlutterBarcodeScanner.getBarcodeStreamReceiver("#ff6666", "Cancel", false, ScanMode.other)
         .listen((barcode) { 
         /// barcode to be used
         });