Question

我只是在检查FBSession的状态

- (BOOL)hasValidSession {
    return (self.session.state == FBSessionStateOpen)
 }

有时候状态会暂时改为FBSessionStateOpenTokenExtended，这会返回NO，这会导致我的登录模式失效。当我再次点击连接时，它会使应用程序崩溃以尝试重新建立活动的facebook会话。所以我把它改成了

- (BOOL)hasValidSession {
if (self.session.state == FBSessionStateOpen || self.session.state == FBSessionStateOpenTokenExtended) {
    return YES;
}
else {
    return NO;
}}

我的上述方法到目前为止工作但似乎是一个黑客...在您的应用中检查有效会话的最佳无处不在的方法是什么？

Answer 1

这是我在我的应用中查看facebook会话的方式，它对我有用：

-(BOOL)checkFacebookSession
{
    if([FBSession activeSession].state == FBSessionStateCreatedTokenLoaded)
    {
        NSLog(@"Logged in to Facebook");
        [self openFacebookSession];
        UIAlertView *alertDialog;

        alertDialog = [[UIAlertView alloc] initWithTitle:@"Facebook" message:@"You're already logged in to Facebook" delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil];

        [alertDialog show];

        [alertDialog release];
        return YES;
    }
    else{
        NSLog(@"Not logged in to Facebook");
        return NO; //Show login flow.
    }
}

希望它有所帮助！：d

Answer 2

如果状态位于FBSessionStateOpen或FBSessionStateOpenTokenExtended，则会话处于活动状态。您可以使用以下方法获取用户的当前状态：

- (BOOL)isActiveSession
{
    return (FBSession.activeSession.state == FBSessionStateOpen 
           || FBSession.activeSession.state == FBSessionStateOpenTokenExtended);
}

检查有效的Facebook会话

2 个答案: