如何在AccessType中使用GoogleAuthorizationCodeFlow处于脱机状态

Question

我必须实现一个将文件上传到Google云端硬盘的功能.
与快速入门指南中一样.

首先,我调用generateLinkAuth来生成获取代码的链接.
然后执行generateCode以获取令牌.
一切都好.

    List<String> SCOPES = Arrays.asList("https://www.googleapis.com/auth/drive.file", "https://www.googleapis.com/auth/userinfo.email",
            "https://www.googleapis.com/auth/userinfo.profile", DriveScopes.DRIVE);
    public String generateLinkAuth() {
            mHttpTransport = new NetHttpTransport();
            mJsonFactory = new JacksonFactory();

            mFlow = new GoogleAuthorizationCodeFlow.Builder(mHttpTransport, mJsonFactory, CLIENT_ID, CLIENT_SECRET, SCOPES).setAccessType("online").setApprovalPrompt("force").build();


            String url = mFlow.newAuthorizationUrl().setRedirectUri(REDIRECT_URI).build();

            System.out.println("url :" + url);
            return url;
        }

        public void generateCode(String code) {
            new GetCredentialFromCode(mContext, code).execute();
        }


        class GetCredentialFromCode extends AsyncTask<Void, Void, Void> {
            private Context mContext;
            private String code;
            private final ProgressDialog mDialog;

            public GetCredentialFromCode(Context context, String cd) {
                mContext = context;
                mDialog = new ProgressDialog(context);
                mDialog.show();
                mDialog.setTitle("Uploading ...");
                code = cd;
            }

            @Override
            protected Void doInBackground(Void... params) {

                if (mFlow != null) {
                    try {

                        mResponse = mFlow.newTokenRequest(code).setRedirectUri(REDIRECT_URI).execute();

                        mCredential = new GoogleCredential();

                        mCredential.setFromTokenResponse(mResponse);


                        String accessToken = mCredential.getAccessToken();
                        Editor edit = mPrefs.edit();
                        edit.putString(GOOGLE_DRIVE_TOKEN, accessToken);
                        edit.commit();

                        String accessTokenSave = mPrefs.getString(GOOGLE_DRIVE_TOKEN, "NO KEY");
                        Log.e(TAG, "access Token Saved is " + accessTokenSave);

                    } catch (IOException e) {
                        Editor edit = mPrefs.edit();
                        edit.putString(GOOGLE_DRIVE_TOKEN, "NO KEY");
                        e.printStackTrace();
                    }
                }

                String accessTokenSave = mPrefs.getString(GOOGLE_DRIVE_TOKEN, "NO KEY");

                mHttpTransport = new NetHttpTransport();
                mJsonFactory = new JacksonFactory();
                mCredential = new GoogleCredential().setAccessToken(accessTokenSave);

                getUserInfo();

                mDriveService = new Drive.Builder(mHttpTransport, mJsonFactory, mCredential).build();
                return null;
            }

            @Override
            protected void onPostExecute(Void result) {
                mDialog.dismiss();
                GoogleDriveLogInAct act=  (GoogleDriveLogInAct) mContext;
                act.goBackSettingScreen();
            }

        }

问题是令牌将在1小时内使用setAccessType("在线")到期,因此我将其更改为setAccessType("离线").
当我更改它并再次运行我的Android应用程序时,我收到一个错误 - 当我执行下面的代码时.

                mResponse = mFlow.newTokenRequest(code).setRedirectUri(REDIRECT_URI).execute();

                mCredential = new GoogleCredential();

                mCredential.setFromTokenResponse(mResponse);

当我尝试在控制台上调试时执行mCredential.setFromTokenResponse(mResponse).,将提出例外

java.lang.RuntimeException: An error occured while executing doInBackground()
    at android.os.AsyncTask$3.done(AsyncTask.java:278)
    at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
    at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
    at java.util.concurrent.FutureTask.run(FutureTask.java:137)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
    at java.lang.Thread.run(Thread.java:856)
 Caused by: java.lang.IllegalArgumentException: Please use the Builder and call setJsonFactory, setTransport and setClientSecrets
    at com.google.common.base.Preconditions.checkArgument(Preconditions.java:88)
    at com.google.api.client.googleapis.auth.oauth2.GoogleCredential.setRefreshToken(GoogleCredential.java:294)
    at com.google.api.client.googleapis.auth.oauth2.GoogleCredential.setRefreshToken(GoogleCredential.java:153)
    at com.google.api.client.auth.oauth2.Credential.setFromTokenResponse(Credential.java:556)
    at com.google.api.client.googleapis.auth.oauth2.GoogleCredential.setFromTokenResponse(GoogleCredential.java:313)
    at com.jp.shotdocs.libs.GoogleDriveLib$GetCredentialFromCode.doInBackground(GoogleDriveLib.java:168)
    at com.jp.shotdocs.libs.GoogleDriveLib$GetCredentialFromCode.doInBackground(GoogleDriveLib.java:1)
    at android.os.AsyncTask$2.call(AsyncTask.java:264)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
    ... 4 more

如何脱机使用accessType？
有什么我必须修改才能使用此模式吗？

Answer 1

（在评论中回答。请参阅没有答案的问题，但问题已在评论中解决（或在聊天中扩展））

OP 写道：

已经解决了这个问题...我应该GoogleCredential用 usingGoogleCredential.Build()而不是 来声明new GoogleCredential()。