Java Session.getState方法代码示例

import com.facebook.Session; //导入方法依赖的package包/类
/**
 * Gets the current state of the session or null if no session has been created.
 * 
 * @return the current state of the session
 */
protected final SessionState getSessionState() {
    if (sessionTracker != null) {
        Session currentSession = sessionTracker.getSession();
        return (currentSession != null) ? currentSession.getState() : null;
    }
    return null;
}
 

import com.facebook.Session; //导入方法依赖的package包/类
/**
 * Get the underlying Session object to use with 3.0 api.
 * 
 * @return Session - underlying session
 */
@Deprecated
public final Session getSession() {
    while (true) {
        String cachedToken = null;
        Session oldSession = null;

        synchronized (this.lock) {
            if (userSetSession != null) {
                return userSetSession;
            }
            if ((session != null) || !sessionInvalidated) {
                return session;
            }

            cachedToken = accessToken;
            oldSession = session;
        }

        if (cachedToken == null) {
            return null;
        }

        // At this point we do not have a valid session, but mAccessToken is
        // non-null.
        // So we can try building a session based on that.
        List<String> permissions;
        if (oldSession != null) {
            permissions = oldSession.getPermissions();
        } else if (pendingAuthorizationPermissions != null) {
            permissions = Arrays.asList(pendingAuthorizationPermissions);
        } else {
            permissions = Collections.<String>emptyList();
        }

        Session newSession = new Session.Builder(pendingAuthorizationActivity).
                setApplicationId(mAppId).
                setTokenCachingStrategy(getTokenCache()).
                build();
        if (newSession.getState() != SessionState.CREATED_TOKEN_LOADED) {
            return null;
        }
        Session.OpenRequest openRequest =
                new Session.OpenRequest(pendingAuthorizationActivity).setPermissions(permissions);
        openSession(newSession, openRequest, !permissions.isEmpty());

        Session invalidatedSession = null;
        Session returnSession = null;

        synchronized (this.lock) {
            if (sessionInvalidated || (session == null)) {
                invalidatedSession = session;
                returnSession = session = newSession;
                sessionInvalidated = false;
            }
        }

        if (invalidatedSession != null) {
            invalidatedSession.close();
        }

        if (returnSession != null) {
            return returnSession;
        }
        // Else token state changed between the synchronized blocks, so
        // retry..
    }
}