具有相同UIViewController的自定义tabbar

Question

我正在开发app，我在其中创建了包含五个标签项的自定义标签栏。对于所有五个标签项，我使用了相同的UIViewController。单击选项卡项，我只需更改数据并刷新UIView。这是我的代码：

 UIViewController* viewController = [[WallViewController alloc] init];

    UIViewController* viewController1 = [[WallViewController alloc] init];

    UIViewController* viewController2 = [[WallViewController alloc] init];

    UIViewController* viewController3 = [[WallViewController alloc] init];

    UIViewController* viewController4 = [[WallViewController alloc] init];

    //set viewcontrollers in tabbar
    self.viewControllers = [NSArray arrayWithObjects:
                            [self viewControllerWithTabTitle:@"All" image:[UIImage imageNamed:@"all.png"] delegate:viewController],
                            [self viewControllerWithTabTitle:@"Beta" image:[UIImage imageNamed:@"timing.png"] delegate:viewController1],
                            [self viewControllerWithTabTitle:@"Mix" image:nil delegate:viewController2],
                            [self viewControllerWithTabTitle:@"Alpha" image:[UIImage imageNamed:@"venue.png"] delegate:viewController3],
                            [self viewControllerWithTabTitle:@"Test" image:[UIImage imageNamed:@"rsvp.png"] delegate:viewController4], nil];

它工作得很好，但我在Objective-c ARC中转换了我的代码。现在这段代码没有用，所以我该怎么做才能解决这个问题？

提前谢谢。