HarmonyOS 系统相机默认打开前置摄像头

async thirdPartyCall(supportMultiMode: boolean): Promise<common.AbilityResult | undefined> {
  console.log("thirdPartyCall savaPath=" + this.savePath) // ohos.want.action.imageCapture
  // 拉起拍照功能
  let want: Want = {
    "action": 'ohos.want.action.imageCapture',
    "parameters": {
      supportMultiMode: supportMultiMode,
      callBundleName: "XXXXXX"
    }
  };
  // 获取图片uri
  if (this.context) {
  let result: common.AbilityResult = await this.context.startAbilityForResult(want);
  let params = result?.want?.parameters as Record<string, string | number>
  this.imagePathSrc = params?.resourceUri as string;
  console.info('Operation imagePathSrc= ' + this.imagePathSrc);
}
return undefined;
}
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打开系统相机的方法如何默认打开前置摄像头？