HarmonyOS 调用generateBarcode. createBarcode()生成码图无响应

生成码图不需要开通权限，需要在真机上运行，请参考以下demo

import { scanCore, generateBarcode } from '@kit.ScanKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { image } from '@kit.ImageKit';
import { hilog } from '@kit.PerformanceAnalysisKit';
@Entry
@Component
struct GenerateBarcode {
  @State pixelMap: image.PixelMap | undefined = undefined
  build() {
    Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {
      Button('generateBarcode Promise').onClick(() => {
        // 以QR码为例，码图生成参数
        this.pixelMap = undefined;
        let content: string = 'huawei';
        let options: generateBarcode.CreateOptions = {
          scanType: scanCore.ScanType.QR_CODE,
          height: 400,
          width: 400
        }
        // 码图生成接口，成功返回PixelMap格式图片
        generateBarcode.createBarcode(content, options).then((pixelMap: image.PixelMap) => {
          this.pixelMap = pixelMap;
          hilog.info(0x0001, '[Scan Sample]', `Succeeded in getting PixelMap by promise with options.`);
        }).catch((error: BusinessError) => {
          hilog.error(0x0001, '[generateBarcode]', 'promise error : %{public}s', JSON.stringify(error));
        })
      })
      // 获取生成码后显示
      if (this.pixelMap) {
        Image(this.pixelMap).width(300).height(300).objectFit(ImageFit.Contain)
      }
    }
    .width('100%')
    .height('100%')
  }
}
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请参考api文档链接

https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/scan-generatebarcode-V5#section191012115182，说明了对生成码参数建议：码图大小，生成QR Code、Data Matrix、Aztec类型的码图时，输入的width和height值相同且均大于等于200小于等于4096，否则生成的码图过小会影响识别，均不要设置小于200