HarmonyOS 鸿蒙Next 从文件管理器选择音乐文件后如何拥有永久化权限而不需copy

HarmonyOS 鸿蒙Next 从文件管理器选择音乐文件后如何拥有永久化权限而不需

let audioSelectOptions = new picker.AudioSelectOptions();
let audioPicker = new picker.AudioViewPicker(this.context);
audioPicker.select(audioSelectOptions).then((audioSelectResult: Array<string>) => {
  if (audioSelectResult !== null && audioSelectResult !== undefined) {
    let arrStr: string[] = [];
    for(let i=0;i<audioSelectResult.length;i++){

      let filePath = getContext(this).filesDir +'/'+ Utility.getMediaNameByUri(audioSelectResult[i])
      Logger.info(TAG,'filePath uri: ' + filePath);
      arrStr.push(filePath)
      let file = fileIo.openSync(audioSelectResult[i], fileIo.OpenMode.READ_ONLY)
      let file2 = fileIo.openSync(filePath, fileIo.OpenMode.READ_WRITE | fileIo.OpenMode.CREATE)
      fileIo.copyFileSync(file.fd, file2.fd)
      fileIo.closeSync(file);
      fileIo.closeSync(file2);

    }