格式 CODE_128 的条形码通过 @zxing/ngx-scanner 扫描不正确

Question

我正在使用 @zxing/ngx-scanner 扫描条形码。我可以使用我的笔记本电脑相机扫描 QR_CODE 和 DATA_MATRIX 格式的条形码。我现在想扫描 CODE_128 格式的条码。但是图书馆需要时间来扫描，当它扫描时……它扫描不正确。

有没有人遇到过类似的问题？我该如何解决这个问题？

我正在使用 Angular 7 和 ngx-scanner 2.0.1 版。我正在 Chrome 浏览器中尝试 Windows 10。

代码：

In HTML:
<zxing-scanner #scanner start="true" (scanSuccess)="myFn($event)" [formats]="['QR_CODE', 'EAN_13', 'CODE_128', 'DATA_MATRIX']"></zxing-scanner>

In ts:
import { ZXingScannerComponent } from '@zxing/ngx-scanner';

export class myClass implements OnInit {
 @ViewChild('scanner') scanner: ZXingScannerComponent;
 hasDevices: boolean = false;
 hasPermission: boolean;
 availableDevices: MediaDeviceInfo[] = [];
 currentDevice: MediaDeviceInfo;

 constructor(private zone: NgZone) {
  window['angularComponentReference'] = {
    zone: this.zone,
    componentFn: (searchcontent: any) =>
      window['scannerOutput'](searchcontent),
      component: this,
  };
 }

 ngOnInit() {
  this.scanner.camerasFound.subscribe((devices: MediaDeviceInfo[]) => {
     this.hasDevices = true;
     this.availableDevices = devices;
  });
  this.scanner.camerasNotFound.subscribe(() => {
     this.hasDevices = false;
  });
  this.scanner.scanComplete.subscribe((result: Result) => {
     this.qrResult = result;
     this.hasPermission = false;
  });
  this.scanner.permissionResponse.subscribe((perm: boolean) => {
    this.hasPermission = perm;
  });
 }

 myFn(resultString) {
   console.log(resultString);
 }

}

更新：我需要扫描的条码样本

Answer 1

问题已解决。对于一维条码，我们需要水平握住条码才能正确扫描。

有关更多信息，我已经创建了 github 问题：https://github.com/zxing-js/ngx-scanner/issues/296

格式 CODE_128 的条形码通过 @zxing/ngx-scanner 扫描不正确

Barcode of format CODE_128 is scanning incorrectly via @zxing/ngx-scanner

barcode-scanner

zxing

angular

angular7