Question

我正在开发Android Honeycomb（v3.0）应用程序，该应用程序需要与Google Calendar API进行通信。我想允许我的应用访问特定Google帐户的日历数据，以便阅读和创建活动。

不幸的是，我使用OAuth2遇到授权问题。这是我到目前为止所做的：

1）我想访问其日历的Google帐户已在我正在使用的Android设备中注册。

2）我在帐户上的Google API控制台中启用了Calendar API。

3）我可以使用以下代码访问此帐户：

AccountManager accountManager = AccountManager.get(this.getBaseContext());
Account[] accounts = accountManager.getAccountsByType("com.google");
Account acc = accounts[0]; // The device only has one account on it

4）我现在想要获取一个AuthToken，以便在与日历通信时使用。我按照此tutorial进行了操作，但将所有内容转换为Google日历而非Google任务。我使用authToken AccountManager使用getAuthToken成功从我要使用的帐户AUTH_TOKEN_TYPE == "oauth2:https://www.googleapis.com/auth/calendar"中检索AccessProtectedResource accessProtectedResource = new GoogleAccessProtectedResource(tokens[0]); // this is the correct token HttpTransport transport = AndroidHttp.newCompatibleTransport(); Calendar service = Calendar.builder(transport, new JacksonFactory()) .setApplicationName("My Application's Name") .setHttpRequestInitializer(accessProtectedResource) .build(); service.setKey("myCalendarSimpleAPIAccessKey"); // This is deprecated??? Events events = service.events().list("primary").execute(); // Causes an exception!。

5）这是问题开始的地方。我现在就在这一点上：

com.google.api.client.googleapis.json.GoogleJsonResponseException: 403 Forbidden
{
  "code" : 403,
  "errors" : [ {
    "domain" : "usageLimits",
    "message" : "Daily Limit Exceeded. Please sign up",
    "reason" : "dailyLimitExceededUnreg",
    "extendedHelp" : "https://code.google.com/apis/console"
  } ],
  "message" : "Daily Limit Exceeded. Please sign up"
}

6）这是最后一行返回的异常：

Calendar.setKey

7）根据此Google API Video（等待一分钟左右来查看适用的内容），此异常的原因可能是我未在Google API控制台中启用API访问权限帐户。但是，如果你看2），你可以看到我确实这样做了。

8）对我来说，问题似乎是我无法正确设置Simple API访问密钥，因为不推荐使用Tasks.accessKey = "key"方法。在我之前链接的Google Tasks教程中，使用HttpTransport TRANSPORT = new NetHttpTransport(); JsonFactory JSON_FACTORY = new JacksonFactory(); String SCOPE = "https://www.googleapis.com/auth/calendar"; String CALLBACK_URL = "urn:ietf:wg:oauth:2.0:oob"; String CLIENT_ID = "myClientID"; String CLIENT_SECRET = "myClientSecret"; String authorizeUrl = new GoogleAuthorizationRequestUrl(CLIENT_ID, CALLBACK_URL, SCOPE).build(); String authorizationCode = "???"; // At this point, I have to manually go to the authorizeUrl and grab the authorization code from there to paste it in here while in debug mode GoogleAuthorizationCodeGrant authRequest = new GoogleAuthorizationCodeGrant(TRANSPORT, JSON_FACTORY, CLIENT_ID, CLIENT_SECRET, authorizationCode, CALLBACK_URL); authRequest.useBasicAuthorization = false; AccessTokenResponse authResponse = authRequest.execute(); String accessToken = authResponse.accessToken; // gets the correct token GoogleAccessProtectedResource access = new GoogleAccessProtectedResource(accessToken, TRANSPORT, JSON_FACTORY, CLIENT_ID, CLIENT_SECRET, authResponse.refreshToken); HttpRequestFactory rf = TRANSPORT.createRequestFactory(access); AccessProtectedResource accessProtectedResource = new GoogleAccessProtectedResource(accessToken); HttpTransport transport = AndroidHttp.newCompatibleTransport(); Calendar service = Calendar.builder(transport, new JacksonFactory()) .setApplicationName("My Application's Name") .setHttpRequestInitializer(accessProtectedResource) .build(); Events events = service.events().list("primary").execute(); // this works!设置密钥。不过，我不知道如何使用Calendar API。我尝试了多个Google帐户，所有这些帐户都提供了5）的例外情况。

9）我想指出使用OAuth2的传统方法对我有用。这是我用于此的代码：

{{1}}

10）最后，我的问题是：我想在设备上使用AccountManager中的帐户，以便检索用于Google Calendar API的有效OAuth2令牌。第二种方法对我没用，因为用户必须手动转到他们的网络浏览器并获得授权代码，这不是用户友好的。有人有主意吗？为长篇帖子道歉，谢谢！

Answer 1

尝试将JsonHttpRequestInitializer添加到构建器并在那里设置密钥：

Calendar service = Calendar.builder(transport, new JacksonFactory())
.setApplicationName("My Application's Name")
.setHttpRequestInitializer(accessProtectedResource)
.setJsonHttpRequestInitializer(new JsonHttpRequestInitializer() {
    public void initialize(JsonHttpRequest request) {
        CalendarRequest calRequest = (CalendarRequest) request;
        calRequest.setKey("myCalendarSimpleAPIAccessKey");
    }

}).build();

Answer 2

回答否10：我基本上不得不做你使用TaskSample所做的事情，然后使用这里提供的Android GData日历示例：http://code.google.com/p/google-api-java-client/source/browse/calendar-android-sample/src/main/java/com/google/api/client/sample/calendar/android/CalendarSample.java?repo=samples 从AccountManager本身获取AuthToken：

accountManager = new GoogleAccountManager(this);
settings = this.getSharedPreferences(PREF, 0);
gotAccount();

private void gotAccount() {
        Account account = accountManager.getAccountByName(accountName);
        if (account != null) {
            if (settings.getString(PREF_AUTH_TOKEN, null) == null) {
                accountManager.manager.getAuthToken(account, AUTH_TOKEN_TYPE,
                        true, new AccountManagerCallback<Bundle>() {

                            @Override
                            public void run(AccountManagerFuture<Bundle> future) {
                                try {
                                    Bundle bundle = future.getResult();
                                    if (bundle
                                            .containsKey(AccountManager.KEY_INTENT)) {
                                        Intent intent = bundle
                                                .getParcelable(AccountManager.KEY_INTENT);
                                        int flags = intent.getFlags();
                                        flags &= ~Intent.FLAG_ACTIVITY_NEW_TASK;
                                        intent.setFlags(flags);
                                        startActivityForResult(intent,
                                                REQUEST_AUTHENTICATE);
                                    } else if (bundle
                                            .containsKey(AccountManager.KEY_AUTHTOKEN)) {
                                        setAuthToken(bundle
                                                .getString(AccountManager.KEY_AUTHTOKEN));
                                        // executeRefreshCalendars();
                                    }
                                } catch (Exception e) {
                                    handleException(e);
                                }
                            }
                        }, null);
            } else {
                // executeRefreshCalendars();
            }
            return;
        }
        chooseAccount();
    }

private void chooseAccount() {
    accountManager.manager.getAuthTokenByFeatures(
            GoogleAccountManager.ACCOUNT_TYPE, AUTH_TOKEN_TYPE, null,
            ExportClockOption.this, null, null,
            new AccountManagerCallback<Bundle>() {

                @Override
                public void run(AccountManagerFuture<Bundle> future) {
                    Bundle bundle;
                    try {
                        bundle = future.getResult();
                        setAccountName(bundle
                                .getString(AccountManager.KEY_ACCOUNT_NAME));
                        setAuthToken(bundle
                                .getString(AccountManager.KEY_AUTHTOKEN));
                        // executeRefreshCalendars();
                    } catch (OperationCanceledException e) {
                        // user canceled
                    } catch (AuthenticatorException e) {
                        handleException(e);
                    } catch (IOException e) {
                        handleException(e);
                    }
                }
            }, null);
}

void setAuthToken(String authToken) {
    SharedPreferences.Editor editor = settings.edit();
    editor.putString(PREF_AUTH_TOKEN, authToken);
    editor.commit();
    createCalendarService(authToken);
    try {
        Events events = service.events().list("primary").execute();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

private void createCalendarService(String authToken) {
    accessProtectedResource = new GoogleAccessProtectedResource(authToken);

    Log.i(TAG, "accessProtectedResource.getAccessToken() = "
            + accessProtectedResource.getAccessToken());
    JacksonFactory jsonFactory = new JacksonFactory();
    service = com.google.api.services.calendar.Calendar
            .builder(transport, jsonFactory)
            .setApplicationName("Time Journal")
            .setJsonHttpRequestInitializer(
                    new JsonHttpRequestInitializer() {
                        @Override
                        public void initialize(JsonHttpRequest request) {
                            CalendarRequest calendarRequest = (CalendarRequest) request;
                            calendarRequest
                                    .setKey("<YOUR SIMPLE API KEY>");
                        }
                    }).setHttpRequestInitializer(accessProtectedResource)
            .build();
}

Android Calendar API上的Google Calendar API OAuth2令人烦恼

2 个答案: