ios - 实例化 View Controller Swift 3 标签栏 Controller

Question

如何切换到标签栏 Controller ？在带有导航 Controller 的选项卡上有 2 个 View Controller ，在选项卡栏 Controller 上有一个导航 Controller 。

let storyboard = UIStoryboard(name: "PendingOverview", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "PendingOverviewVC") as! PendingOverViewController
let nc = UINavigationController(rootViewController: vc)
self.present(nc, animated: false, completion: nil)

谢谢

Answer 1

在 Storyboard 中，将标识符设置为 UITabbarController，然后使用 instantiateViewController 显示 UITabbarController。

let storyboard = UIStoryboard(name: "PendingOverview", bundle: nil)
let tabbarVC = storyboard.instantiateViewController(withIdentifier: "TabbarIdentifier") as! UITabbarController
if let vcs = tabbarVC.viewControllers, 
   let nc = vcs.first as? UINavigationController,
   let pendingOverVC = nc.topViewController as? PendingOverViewController {

      pendingOverVC.pendingResult = pendingResult
}
self.present(tabbarVC, animated: false, completion: nil)