Question

（我需要现有的vc而不是推送vc）

我有一个标签栏和一个导航控制器界面

我的第一个标签栏项目vc1和第二个标签栏项目是vc2

推送vc正常，这就是我做的 步骤1-我点击vc1中的一个按钮，通过导航推送将其导航到vc3

接下来，我点击了vc2标签项然后我点击vc1标签项和然后我按下vc3的BACK按钮，我得到的是一个正确的应用程序流

backbutton会弹出viewcontroller

   fileprivate func presentDetail(at indexPath: IndexPath) {
        self.updateCell(at: indexPath)
        self.startLoading()
      let vc3 = storyboard?.instantiateViewController(withIdentifier: "vc3") as! vc3
            //   self.navigationController?.setViewControllers([vc,vc1], animated: true)

            vc3.modalPresentationStyle = .overCurrentContext
        vc3.data = mDataSource.shared.demoData[indexPath.row]
          if let navigator = navigationController {
            navigator.pushViewController(vc3, animated: true)
}

  @IBAction func backBtnTapped(_ sender: Any) {
        self.navigationController?.popViewController(animated: true)
       // performSegue(withIdentifier: "unwindSegueToVC1", sender: self)
    }

如何让当前的VC工作？

  let vc = storyboard.instantiateViewController(withIdentifier: "vc3") as! vc3

       vc3.modalPresentationStyle = .overCurrentContext
            vc3.data = mDataSource.shared.demoData[indexPath.row]
 self.present(vc, animated: true, completion: nil)

Answer 1

您是否尝试删除此行？

vc3.modalPresentationStyle = .overCurrentContext

只有在您要展示视图时才需要此行。

Answer 2

fileprivate func presentDetail(at indexPath: IndexPath) {

    self.updateCell(at: indexPath)
    self.startLoading()

    let vc3 = storyboard?.instantiateViewController(withIdentifier: "vc3") as! vc3
    self.hidesBottomBarWhenPushed = true //Use this line so you can hide tabbar. when you push to vc3 screen
    self.navigationController?.pushViewController(vc3, animated: true)

}

@IBAction func backBtnTapped(_ sender: Any) {
    self.navigationController?.popViewController(animated: true)
}

当我弹出控制器我得到黑屏？

2 个答案: