HarmonyOS 如何获取资源文件的路径，用于ndk C++侧处理

使用异步方法将数据写入文件沙箱路径中：

import { BusinessError } from '@kit.BasicServicesKit';
import { fileIo } from '@kit.CoreFileKit';

getContext(this).resourceManager.getRawFileContent('test.txt', (_err, value) => {
  // test.txt是rawfile中文件的名称
  let myBuffer: ArrayBufferLike = value.buffer
  let context = getContext(this);
  //沙箱路径 /test.txt是自定义名称
  let filePath = context.filesDir + "/test.txt";
  console.log("testTag-filePath:" + filePath);
  let file = fileIo.openSync(filePath, fileIo.OpenMode.READ_WRITE | fileIo.OpenMode.CREATE);
  fileIo.write(file.fd, myBuffer, (err: BusinessError, writeLen: number) => {
    if (err) {
      console.error("write data to file failed with error message:" + err.message + ", error code: " + err.code);
    } else {
      console.info("write data to file succeed and size is:" + writeLen);
    }
    fileIo.closeSync(file);
  });
});
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请参考下此种沙箱写入的方法codelabs参考：https://developer.huawei.com/consumer/cn/codelabsPortal/carddetails/tutorials_NEXT-FilesManger