如何在Android应用程序上传文件，谷歌驱动器

问题描述

我实现一个功能，上传文件，谷歌驱动器。我的应用程序（Android应用程序）有两个页面。

I have implement a function upload file to Google Drive. My app (Android App) have two page.

设置页：我们已经配置了谷歌帐户。到谷歌帐户登录后。我们授予权和组oauth_token和oauth_token_secret保存到的共享preferences 的

Setting Page: we have config the google account. After login in to google account. We grant the right and save the OAUTH_TOKEN and OAUTH_TOKEN_SECRET to the SharedPreferences.

上传页：我们从资源管理器中选择文件。然后在按钮[UPLOAD]点击发送它们谷歌驱动器。

Upload page: We choose files from explorer. Then click on button [UPLOAD] to send them Google Drive.

我发现在developers.google.com样品code展示如何上传文件。它看起来像这样

I found the sample code on developers.google.com show how to upload file. It look like this

/**
   * Insert new file.
   *
   * @param service Drive API service instance.
   * @param title Title of the file to insert, including the extension.
   * @param description Description of the file to insert.
   * @param parentId Optional parent folder's ID.
   * @param mimeType MIME type of the file to insert.
   * @param filename Filename of the file to insert.
   * @return Inserted file metadata if successful, {@code null} otherwise.
   */
  private static File insertFile(Drive service, String title, String description,
      String parentId, String mimeType, String filename) {
    // File's metadata.
    File body = new File();
    body.setTitle(title);
    body.setDescription(description);
    body.setMimeType(mimeType);

    // Set the parent folder.
    if (parentId != null && parentId.length() > 0) {
      body.setParents(
          Arrays.asList(new File.ParentReference().setId(parentId));
    }

    // File's content.
    java.io.File fileContent = new java.io.File(filename);
    FileContent mediaContent = new FileContent(mimeType, fileContent);
    try {
      File file = service.files().insert(body, mediaContent).execute();

      // Uncomment the following line to print the File ID.
      // System.out.println("File ID: %s" + file.getId());

      return file;
    } catch (IOException e) {
      System.out.println("An error occured: " + e);
      return null;
    }
  }

---

所以我们只需要调用上述函数上传文件。但我不知道如何初始化
驱动器的（com.google.api.services.drive.Drive）的传递给函数。

我有什么事做的oauth_token和oauth_token_secret初始化驱动变量？

What thing i have to do to initialize the drive variable with OAUTH_TOKEN and OAUTH_TOKEN_SECRET ?

感谢你的援助。

推荐答案

在谷歌驱动器SDK文档中的OAuth 2.0页面介绍了如何检索有效的凭证，并用它们来实例化一个服务对象：

The OAuth 2.0 page in the Google Drive SDK documentation explains how to retrieve valid credentials and use them to instantiate a service object:

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