即使我通过 Facebook 应用程序注销，iPhone facebook sdk 仍显示有效会话

Question

经过数小时的代码尝试和在线搜索，我不得不寻求帮助。我在 UITableViewCell 中有一个共享按钮。在其触摸操作中，我打开 facebook 登录对话框，然后如果登录，我会显示提要对话框。它工作正常，但即使我通过 Facebook 应用程序注销 sessionIsValid 显示是。这是代码...

if(indexPath.row==0)
        {
            AppId=@"xxx";

            AppDelegate *appDelegate=(AppDelegate*)[[UIApplication sharedApplication]delegate];
            appDelegate.scheduleViewController=self;
            self.facebook = [[Facebook alloc] initWithAppId:AppId andDelegate:self];
            // [self.facebook requestWithGraphPath:@"me" andDelegate:self];
            if ([defaults objectForKey:@"FBAccessTokenKey"] 
                && [defaults objectForKey:@"FBExpirationDateKey"]) {
                self.facebook.accessToken = [defaults objectForKey:@"FBAccessTokenKey"];
                self.facebook.expirationDate = [defaults objectForKey:@"FBExpirationDateKey"];

            }
            if (![self.facebook isSessionValid]) {
                [self.facebook authorize:permissions];
            }
            else
                [self doStuffAfterLogin:[self.facebook accessToken]]; 

        }

- (void)fbDidLogin {     
    [defaults setObject:[self.facebook accessToken] forKey:@"FBAccessTokenKey"];
    [defaults setObject:[self.facebook expirationDate] forKey:@"FBExpirationDateKey"];
    [defaults synchronize];
    [self doStuffAfterLogin:[self.facebook accessToken]];
}
- (void)request:(FBRequest *)request didFailWithError:(NSError *)error {

    NSLog(@"%@", [error localizedDescription]);
    NSLog(@"Err details: %@", [error description]);
    UIAlertView *alertView=[[UIAlertView alloc]initWithTitle:@"Error!" message:@"Error!" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
    [alertView show];
    [defaults removeObjectForKey:@"FBAccessTokenKey"];
    [defaults removeObjectForKey:@"FBExpirationDateKey"];
    [self.facebook authorize:permissions]; 

}

-(void)doStuffAfterLogin:(NSString*)accessToken;
{
    NSMutableString *imgUrl=[[NSMutableString alloc]init];
    if([[defaults objectForKey:@"imageUrl"] isEqualToString:@""])
        imgUrl= @"http://artist.eventseekr.com/images/no-photo.png";
    else
        imgUrl=[defaults objectForKey:@"imageUrl"];
    NSMutableDictionary* params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                   AppId, @"app_id",
                                   imgUrl, @"picture",
                                   [NSString stringWithFormat:@"Watch %@ in action at the %@ event",[defaults objectForKey:@"name"],[defaults objectForKey:@"eventName"]], @"caption",
                                   @"Sample Festival App", @"description",
                                   nil]; 

     [self.facebook dialog:@"feed" andParams:params andDelegate:self];

}

Answer 1

没错。每个应用程序都有自己的沙盒区域。因此，您已授权您的应用程序，并且您的应用程序已存储一个可用于验证自身的令牌。它对任何其他应用程序一无所知。因此，如果您在 facebook 应用程序中注销，它不知道。