iOS 13在标签栏子视图控制器viewWillAppear中未调用

时间:2019-10-09 15:49:16

标签: ios swift uinavigationcontroller uitabbarcontroller viewwillappear

我有一个标签栏控制器,并在其中添加了五个视图控制器,如下所示:

class InfluencerMainTabBarController: UITabBarController {
override func viewDidLoad() {
    super.viewDidLoad()

    let findWorkVC = UINavigationController.init(rootViewController: InfluencerFindWorkVC.instantiate(fromAppStoryboard: .Influencer))
    findWorkVC.tabBarItem = UITabBarItem(title: nil, image: #imageLiteral(resourceName: "ic_home"), tag: 0)

    let inboxVC = UINavigationController.init(rootViewController: InfluencerInboxVC.instantiate(fromAppStoryboard: .Inbox))
    inboxVC.tabBarItem = UITabBarItem(title: nil, image: #imageLiteral(resourceName: "ic_inbox"), tag: 1)

    let workDiaryVC = UINavigationController.init(rootViewController: InfluencerWorkDiaryVC.instantiate(fromAppStoryboard: .Influencer))
    workDiaryVC.tabBarItem = UITabBarItem(title: nil, image: #imageLiteral(resourceName: "ic_work"), tag: 2)

    let notificationsVC = InfluencerNotificationsVC.instantiate(fromAppStoryboard: .Influencer)
    notificationsVC.tabBarItem = UITabBarItem(title: nil, image: #imageLiteral(resourceName: "ic_notification"), tag: 3)

    let accountVC = InfluencerProfileVC.instantiate(fromAppStoryboard: .Influencer)
    accountVC.tabBarItem = UITabBarItem(title: nil, image: #imageLiteral(resourceName: "ic_profile"), tag: 4)

    let tabBarList = [findWorkVC, inboxVC, workDiaryVC, notificationsVC, accountVC]

    viewControllers = tabBarList

    self.tabBar.tintColor = UIColor.appPurpleColor
    self.tabBar.barTintColor = UIColor.white
}
}

问题是我的第一个控制器,它是 findWorkVC ,它的viewWillAppear被调用,但是当我单击任何其他视图控制器时,它们的viewWillAppear没有被调用。

它在iOS 13之前的设备上运行良好,但是在iOS 13上它不仅被调用,而且导航栏的高度小于iOS 12的导航栏高度,您可以看到导航栏中的标题与状态栏重叠文字。

enter image description here

2 个答案:

答案 0 :(得分:1)

我创建了一个新项目,并测试了所有内容,使用选项卡查看控制器,所有功能均在其中运行,但在我的项目中不起作用,所以我开始寻找与新创建项目不同的项目。

原来,它是根视图控制器。我正在用动画设置像这样的根视图控制器

let controller = InfluencerMainTabBarController.instantiate(fromAppStoryboard: .Main)

UIView.transition(from: self.view, to: controller.view, duration: 0.6, options: [.transitionFlipFromTop], completion: { completed in
     UIApplication.shared.keyWindow?.rootViewController = controller
})

因此,我只是向视图控制器提供了modalPresentationStyle = .fullScreen而没有动画,并且一切正常。

let controller = InfluencerMainTabBarController.instantiate(fromAppStoryboard: .Main)
controller.modalPresentationStyle = .fullScreen
DispatchQueue.main.async { UIApplication.shared.keyWindow?.rootViewController = controller }

现在我只需要寻找如何用动画设置根视图控制器。 :|

答案 1 :(得分:0)

如果您的演示文稿样式不是Apple(表)的新默认样式,则只需将所有ViewController(包括NavigationController)的演示文稿样式设置为FullScreen。这样,将为每个VC再次调用viewWillAppear方法。