Question

我在android AccountManager中提供的getAuthToken（）有问题（步骤如下）：

将authToken重置为null（在注销过程中）
使新的null authToken
将新的authToken设置为服务器提供的新字符串（登录返回）
使新字符串authToken
并尝试检查/获取新的authToken，

但是在通过getAuthToken（）方法获取新的authToken时，调用 future.getResult（）永远挂起。在帐户创建期间首次登录*时不会发生这种情况。我能够使用相同的可调用类来获取身份验证令牌。

以下是我定义的可调用类。请告知如何解决这个问题。

private AccountManagerFuture<Bundle> future = null;
private String authToken;

class GetAuthTokenTask implements Callable<Bundle> {

private AccountManager accountManager;
private Account account;
private String authType;
private Activity activity;

    public GetAuthTokenTask(AccountManager accountManager, Account account, String authType, Activity activity) {
    this.accountManager = accountManager;
    this.account = account;
    this.authType = authType;
    this.activity = activity;
}

/**
 * Computes a result, or throws an exception if unable to do so.
 *
 * @return computed result
 * @throws Exception if unable to compute a result
 */
@Override
public Bundle call() throws Exception {
    return getAuthToken();
}

private Bundle getAuthToken() {
    android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_BACKGROUND);
    future = accountManager.getAuthToken(account, authType, null, activity, null, null);
    try {
        Bundle result = future.getResult();
        if (result!=null) {
            authToken = result.getString(AccountManager.KEY_AUTHTOKEN);
        }
    } catch (OperationCanceledException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (AuthenticatorException e) {
        e.printStackTrace();
    }
    Bundle output = new Bundle();
    output.putString(AccountManager.KEY_AUTHTOKEN, authToken );
    return output;
    }
}


//caller method

private String getAuthToken(Account account, String authType) {
    ExecutorService es = Executors.newSingleThreadExecutor();
    GetAuthTokenTask authTokenTask = new GetAuthTokenTask(accountManager, account, authType, (Activity)getBaseContext());
    FutureTask<Bundle> result = new FutureTask<Bundle>(authTokenTask);
    es.execute(result);
    Bundle resultBundle = new Bundle();
    try {
        resultBundle = result.get();
    } catch (InterruptedException e) {
        e.printStackTrace();
    } catch (ExecutionException e) {
        e.printStackTrace();
    }
    return resultBundle.getString(AccountManager.KEY_AUTHTOKEN);
}

Answer 1

尽量避免使用像这样的活动

future = accountManager.getAuthToken(account, authType, null, true, null, null);

authToken重置后android getAuthToken挂起

1 个答案: