Android将InputStream从http逐字节写入字节数组

Question

我使用Url("some_url").openStream()或OkHttp的response.body().byteStream()从http请求接收InputStream。目的是将InputStream逐块读取到字节数组缓冲区，并将其发送到支持可恢复上传的API方法。

我已经做了一些实现，但是最终文件损坏了（存档无法扩展，视频无法播放等）。

int UPLOAD_THRESHOLD = 1024 * 1024 * 5; // 5 MB
int uploadedSize = 0;
while ((uploadedSize + UPLOAD_THRESHOLD) < docSize) {
    Response<ResponseBody> response = fileService.updateResumableFileContent(token, 
        fileId, false, uploadedSize, getChunkBytes(inputStream, UPLOAD_THRESHOLD));
    if (response.isSuccessful()) {
            uploadedSize = uploadedSize + UPLOAD_THRESHOLD;
    }
}

Response<ResponseBody> response = fileService.updateResumableFileContent(token, 
    fileId, true, uploadedSize, getChunkBytes(inputStream, UPLOAD_THRESHOLD));
if (response.isSuccessful()) {
    return getDocument(fileId);
}

private byte[] getChunkBytes(InputStream inputStream, int offset) throws IOException {
    byte[] buffer = new byte[offset];
    int readCount = inputStream.read(buffer);
    if (readCount == -1) {
        throw new IOException();
    }
    return buffer;
}