HarmonyOS鸿蒙Next应用如何获取设备唯一标识（如 IMEI、OAID）？

可以参考文档，ohos.deviceInfo (设备信息)，看可有帮助:

https://developer.huawei.com/consumer/cn/doc/harmonyos-references/js-apis-device-info

参考其它示例代码，https://developer.huawei.com/consumer/cn/blog/topic/03189375471183037：

import { BusinessError, deviceInfo } from '@kit.BasicServicesKit';
import { hilog } from '@kit.PerformanceAnalysisKit';
import { AAID } from '@kit.PushKit';
import { abilityAccessCtrl, bundleManager, common } from '@kit.AbilityKit';
import { identifier } from '@kit.AdsKit';

export default class DeviceIdTest {

  // Get ODID.
  getOdId(): string {
    let odId = deviceInfo.ODID;
    console.info(`getOdId: ${odId}`);
    return odId;
  }

  // Get AAID.
  async getAaId(): Promise<string> {
    let aaId = '';
    await AAID.getAAID().then((data: string) => {
      aaId = data;
      console.info(`getAAID: ${aaId}`);
    }).catch((err: BusinessError) => {
      console.error('Failed to get AAID', err.code, err.message);
    })
    return aaId;
  }

  // Get OAID.
  getOaId() {
    let hasPermission = false;
    let tokenId: number = 0;
    try {
      // Obtain the current application's BundleInfo based on the given BundleFlags using synchronous methods.
      let bundleInfo: bundleManager.BundleInfo =
        bundleManager.getBundleInfoForSelfSync(bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_APPLICATION);
      let appInfo: bundleManager.ApplicationInfo = bundleInfo.appInfo;
      tokenId = appInfo.accessTokenId;
    } catch (error) {
      const err = error as BusinessError;
      hilog.error(0x0000, 'testTag', '%{public}s',
        `Failed to query Asset. Code: ${err.code}, message: ${err.message}`);
    }

    try {
      let atManager = abilityAccessCtrl.createAtManager();
      // Verify whether the application has been granted permissions through tokenID and permissionName.
      let access = atManager.checkAccessTokenSync(tokenId, 'ohos.permission.APP_TRACKING_CONSENT');
      hasPermission = access === abilityAccessCtrl.GrantStatus.PERMISSION_GRANTED;
    } catch (error) {
      const err = error as BusinessError;
      hilog.error(0x0000, 'testTag', '%{public}s',
        `Failed to check access token. Code: ${err.code}, message: ${err.message}`);
    }

    if (hasPermission) {
      this.rquestOAID();
    } else {
      this.requestPermissions();
    }
  }

  private rquestOAID() {
    // The API is not supported on all devices. Use the canIUse condition to determine whether the API is supported.
    if (canIUse('SystemCapability.Advertising.OAID')) {
      try {
        // Obtain open anonymous device identifiers.
        identifier.getOAID().then((data) => {
          hilog.info(0x0000, 'testTag', '%{public}s', `Success getting OAID by promise, OAID:', ${data}`);
        }).catch((err: BusinessError) => {
          hilog.error(0x0000, 'testTag', '%{public}s',
            `get oaid by promise failed, code: ${err.code}, message: ${err.message}`);
        })
      } catch (err) {
        hilog.error(0x0000, 'testTag', '%{public}s',
          `Failed to get oaid by promise, catch error: ${err.code}, ${err.message}`);
      }
    } else {
      hilog.info(0x0000, 'testTag', '%{public}s', 'Advertising not by this device.');
    }
  }

  // Request Permissions.
  private requestPermissions() {
    let atManager = abilityAccessCtrl.createAtManager();
    try {
      atManager.requestPermissionsFromUser(getContext(this) as common.UIAbilityContext,
        ['ohos.permission.APP_TRACKING_CONSENT']).then((data) => {
        hilog.info(0x0000, 'testTag', '%{public}s', `requestPermissionsFromUser: ${JSON.stringify(data)}`)
        if (data.authResults[0] === -1 && data.dialogShownResults && !data.dialogShownResults[0]) {
          // User not authorized.
          this.openPermissionsSetting();
        }
        if (data.authResults[0] !== 0) {
          // No permission obtained.
          hilog.info(0x0000, 'testTag', 'No permission obtained');
          return;
        }
        this.rquestOAID();
      }).catch((err: Error) => {
        hilog.error(0x0000, 'testTag', '%{public}s', `requestPermissionsFromUser err: ${JSON.stringify(err)}`);
      })
    } catch (err) {
      hilog.error(0x0000, 'testTag', '%{public}s', `requestPermissionsFromUser err: ${JSON.stringify(err)}`);
    }
  }

  // Open permissions setting.
  private openPermissionsSetting() {
    let atManager = abilityAccessCtrl.createAtManager();
    atManager.requestPermissionOnSetting(getContext(this) as common.UIAbilityContext, ['ohos.permission.APP_TRACKING_CONSENT'])
      .then((data: Array<abilityAccessCtrl.GrantStatus>) => {
        if (data[0] === -1) {
          hilog.info(0x0000, 'testTag', 'not access');
          return;
        }
        this.rquestOAID();
      }).catch((err: BusinessError) => {
      hilog.error(0x0000, 'testTag', '%{public}s', `requestPermissionOnSetting err: ${JSON.stringify(err)}`);
    })
  }

}