HarmonyOS 判断设备是否安装某个app

以下是demo：

//module.json5文件中加入链接

  "module": {
    "querySchemes": [
      "xxx",
      "xxx",
    ],
   "name": "entry",
   "type": "entry",
}



//index.ets文件中

import { bundleManager } from '@kit.AbilityKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { hilog } from '@kit.PerformanceAnalysisKit';

@Entry
@Component
struct Index66 {
  build() {

    Text('click')
      .fontSize(40)
      .onClick(()=>{

        try {
          let link = 'xxx://';
          let data = bundleManager.canOpenLink(link);
          hilog.info(0x0000, 'testTag', 'canOpenLink successfully: %{public}s', JSON.stringify(data));
        } catch (err) {
          let message = (err as BusinessError).message;
          hilog.error(0x0000, 'testTag', 'canOpenLink failed: %{public}s', message);
        }

        try {
          let link = 'xxx://';
          let data = bundleManager.canOpenLink(link);
          hilog.info(0x0000, 'testTag', 'canOpenLink successfully: %{public}s', JSON.stringify(data));
        } catch (err) {
          let message = (err as BusinessError).message;
          hilog.error(0x0000, 'testTag', 'canOpenLink failed: %{public}s', message);
        }
      })
  }
}
//手机中已下载了app，没有下载支xx，结果如下：
08-05 20:07:20.552   26311-26311  A00000/testTag                 com.examp...ation_02  I     canOpenLink successfully: false
08-05 20:07:20.570   26311-26311  A00000/testTag                 com.examp...ation_02  I     canOpenLink successfully: true
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参考链接：

https://developer.huawei.com/consumer/cn/blog/topic/03154191594256003