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我正在实现 android 帐户身份验证器，到目前为止，我可以添加帐户获取令牌等。问题是当我更改凭据服务器端时。

如果凭据更改，我无法从服务器收到通知，因此我的下一个 API 请求将被拒绝，因为令牌不再有效。

请求被拒绝后，可能有 2 个原因 -> 令牌已过期或凭据不再有效

发生这种情况时，我使保存的令牌无效并调用 getAuthToken()

在我的 getAuthToken() 中，我首先尝试请求新令牌，如果它被拒绝意味着凭据不再可用，因此我需要提示登录活动。问题是 AccountAuthenticatorResponse.onError 似乎只能记录错误，仅此而已。我尝试使用 AccountAuthenticatorResponse.onResult 传递带有 KEY_INTENT 的捆绑包进行登录活动，但它没有做任何事情。有什么想法吗？

@Override
public Bundle getAuthToken(final AccountAuthenticatorResponse authenticatorResponse, final Account account,
                           final String authTokenType, Bundle bundle) throws NetworkErrorException {

    //Get the account manager to access the account details
    final AccountManager accountManager = AccountManager.get(mContext);
    String authToken = accountManager.peekAuthToken(account, authTokenType);

    //If auth token is null then try to log in the user with the stored credentials
    //It could be that previous token has expired
    if (authToken == null) {
        final String password = accountManager.getPassword(account);
        final String clientID = accountManager.getUserData(account, CLIENT_ID_KEY);
        final String apiSecret = accountManager.getUserData(account, API_SECRET_KEY);
        final String serverUrl = accountManager.getUserData(account, SERVER_ADDRESS_KEY);

        if (password != null && clientID != null && apiSecret != null && serverUrl != null) {
            Logger.log(LOG_TAG, "Requesting new token...", Log.VERBOSE);
            ApiRequestManager.getInstance(mContext)
                    .getToken(serverUrl, clientID, apiSecret, account.name, password,
                            new NetworkCallBack() {
                                @Override
                                public void tokenReceived(Token JsonToken) {
                                    //Credentials still valid, token received
                                    //Returning data back to the account authenticator
                                    Bundle result = new Bundle();
                                    result.putString(AccountManager.KEY_ACCOUNT_NAME, account.name);
                                    result.putString(AccountManager.KEY_ACCOUNT_TYPE, account.type);
                                    result.putString(AccountManager.KEY_AUTHTOKEN, JsonToken.getAccess_token());
                                    authenticatorResponse.onResult(result);
                                }

                                @Override
                                public void errorReceivingToken(VolleyError errorResponse) {
                                    //If we are here with error 400 it only means credentials have changed
                                    //I should prompt LogIn activity at this point
                                    if (errorResponse.networkResponse.statusCode == 400) {
                                        Bundle loginActivityBundle =
                                                promptLoginActivity(authenticatorResponse, account.type, authTokenType, null);

//authenticatorResponse.onResult(loginActivityBundle); authenticationatorResponse.onError(errorResponse.networkResponse.statusCode, "error");

                                    }
                                }
                            });
            return null;
        }
    }

    //If we got an authToken return the account and login info in a bundle
    if (authToken != null) {
        Bundle result = new Bundle();
        result.putString(AccountManager.KEY_ACCOUNT_NAME, account.name);
        result.putString(AccountManager.KEY_ACCOUNT_TYPE, account.type);
        result.putString(AccountManager.KEY_AUTHTOKEN, authToken);

        return result;
    }

    //If we are here then means either we do not have an account signed
    //or credentials are no longer valid -> prompt login procedure again
    return promptLoginActivity(authenticatorResponse, account.type, authTokenType, null);
}
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1 回答 1

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我找到了解决方案。当我调用 getAuthToken() 时，我传递了一个接收成功或失败的 accountManagerCallback，如果由于身份验证异常而失败，我可以从这里提示登录。

于 2017-05-11T19:30:16.757 回答