小编Var*_*.MS的帖子

我按照google drive sdk中提到的所有步骤进行操作.我在我的设备上创建了一个示例应用程序(android,运行果冻豆),并且能够将文件上传到驱动器.当我尝试下载相同的文件时,我能够获取文件ID,fileTitle,fileDownloadURL等元数据,但无法下载内容.我收到401 Unauthorized错误.

我的应用程序AUTH SCOPE是AUTH_TOKEN_TYPE ="oauth2:https://www.googleapis.com/auth/drive.file ";

我正在执行以下操作来获取OAUTH令牌:

AccountManager am = AccountManager.get(this);
        Bundle options = new Bundle();
        am.getAuthToken(
                mAccount,                               
                AUTH_TOKEN_TYPE,                        
                options,                                
                this,                                   
                new OnTokenAcquired(),                  
                new Handler(){
                    @Override
                    public void handleMessage(Message msg) {
                        invadiateToken();                       
                        super.handleMessage(msg);
                    }
                });  

基于令牌,这是我构建Drive对象的方式

Drive buildService(final String AuthToken) {
    HttpTransport httpTransport = new NetHttpTransport();
    JacksonFactory jsonFactory = new JacksonFactory();

    Drive.Builder b = new Drive.Builder(httpTransport, jsonFactory, null);
    b.setJsonHttpRequestInitializer(new JsonHttpRequestInitializer() {

        @Override
        public void initialize(JsonHttpRequest request) throws IOException {
            DriveRequest driveRequest = (DriveRequest) request;
            driveRequest.setPrettyPrint(true); …