为什么我的数据库文件内容没有更新？

Question

当我使用php将db文件上传到服务器并恢复该文件时，Android Device Explorer中的数据库日期已更新，但内容未更新。我不明白为什么会这样。

时间已更新，但内容未更新，这是怎么回事？使用retrofit2进行上传/下载，结果日志成功，文件大小正确为“ 4kb”。

文件权限就像这样的“ -rw-rw ----”，这是我的代码，用于将下载的文件转储到原始文件中。另外，我一直在尝试使用reponse.body（）。bytes（）在onResponse中进行多种方式，但是任何方法都不起作用。

 private boolean writeResponseBodyToDisk(ResponseBody body) {
        try {
            // todo change the file location/name according to your needs
            File futureStudioIconFile = new File(file.getPath());

            InputStream inputStream = null;
            OutputStream outputStream = null;

            try {
                byte[] fileReader = new byte[4096];

                long fileSize = body.contentLength();
                long fileSizeDownloaded = 0;

                inputStream = body.byteStream();
                outputStream = new FileOutputStream(futureStudioIconFile);

                while (true) {
                    int read = inputStream.read(fileReader);

                    if (read == -1) {
                        break;
                    }

                    outputStream.write(fileReader, 0, read);

                    fileSizeDownloaded += read;

                    Log.d("TAG", "file download: " + fileSizeDownloaded + " of " + fileSize);
                }

                outputStream.flush();

                return true;
            } catch (IOException e) {
                return false;
            } finally {
                if (inputStream != null) {
                    inputStream.close();
                }

                if (outputStream != null) {
                    outputStream.close();
                }
            }
        } catch (IOException e) {
            return false;
        }
    }

这是有关下载的回复：

responseBodyCall = retrofitInterface.download("savelocation");
                responseBodyCall.enqueue(new Callback<ResponseBody>() {
                    @Override
                    public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
                        Log.d("Success", "success "+response.code());
                        Log.d("Success", "success "+response.message());
                        Log.d("Success", "downloaded");

                        boolean isSuccess = writeResponseBodyToDisk(response.body());
                        if(isSuccess) Toast.makeText(getApplicationContext(),"Success",Toast.LENGTH_LONG).show();
                    }
                    @Override
                    public void onFailure(Call<ResponseBody> call, Throwable t) {
                        Log.d("failure", "message = " + t.getMessage());
                        Log.d("failure", "cause = " + t.getCause());
                    }
                });