HarmonyOS 标准化数据通路中如何删除指定的数据内容

参考unifiedDataChannel.deleteData中的Options说明配置项参数，key和intention均为可选，根据传入的参数做相应的校验以返回不同的值。在共享的文件在公共数据通路中，数据提供方可以通过UMDF提供的insertData接口将数据写入公共数据通路，获取到的返回值（生成的数据的唯一标识符），可用于对其插入的数据进行更新和删除操作。

参考链接：https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/js-apis-data-unifieddatachannel-V5#unifieddatachanneldeletedata

参考demo：

import { unifiedDataChannel } from '@kit.ArkData';
import { uniformTypeDescriptor } from '@kit.ArkData';
import { BusinessError } from '@kit.BasicServicesKit';

let options: unifiedDataChannel.Options = {
  key: 'xxx'
};

try {
  unifiedDataChannel.deleteData(options).then((data) => {
    console.info(`Succeeded in deleting data. size = ${data.length}`);
    for (let i = 0; i < data.length; i++) {
      let records = data[i].getRecords();
      for (let j = 0; j < records.length; j++) {
        if (records[j].getType() === uniformTypeDescriptor.UniformDataType.PLAIN_TEXT) {
          let text = records[j] as unifiedDataChannel.PlainText;
          console.info(`${i + 1}.${text.textContent}`);
        }
      }
    }
  }).catch((err: BusinessError) => {
    console.error(`Failed to delete data. code is ${err.code},message is ${err.message} `);
  });
} catch (e) {
  let error: BusinessError = e as BusinessError;
  console.error(`Query data throws an exception. code is ${error.code},message is ${error.message} `);
}