当视图控制器（SideMenu）出现时，视图并未显示未调用

Question

I have been implementing SideMenu in my iOS app (mailbox). The SideMenu is used to choose the current folder. I created a SideMenu navigation controller and attached a UITableViewController as the root vc.

It works perfectly fine, up until the point where I click on one of the cells, which dismisses the side menu and should load the mail in the original view controller. However, the original view controller's viewDidAppear method is not called. When I tried to call the load function directly, Xcode said that my tableView was nil (it wasn't when it first loaded).

Here is my code for didSelectRowAtIndexPath in the SideMenu table:

override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    currentFolder = folders[indexPath.row].path
    tableView.deselectRow(at: indexPath, animated: true)
    self.dismiss(animated: true) {
        let vc = self.storyboard?.instantiateViewController(withIdentifier: "mail") as! MailViewController
        vc.loadMail()
    }

}

Here is the loadMail function in the original vc:

func loadMail(showsSpinner: Bool = true) {
    ...
    if let messages = fetchedMessages as? [MCOIMAPMessage] {
        self.mailsInFolder = messages
        SwiftSpinner.hide()
        self.refresher.endRefreshing()
        self.table.reloadData()
    }

}

Also, here is viewDidAppear in the original vc:

override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)
    print("viewDidAppear")
    let from = self.navigationController?.transitionCoordinator?.viewController(forKey: .from)
    if from is MessageViewController {
        print("from is message controller")//should not load
        return
    }
    self.loadMail()

}

Here, viewDidAppear is not called, and the mail doesn't load. What can I do to fix this? Thanks!

Answer 1

I had been working with SideMenu for a while, and I suggest you to use as mainViewController a UINavigationController and then when select one cell of your tableView in the rightViewController

override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    currentFolder = folders[indexPath.row].path
    tableView.deselectRow(at: indexPath, animated: true)
    if let vc = self.storyboard?.instantiateViewController(withIdentifier: "mail") as! MailViewController
    {
       mainNavController.setViewControllers([vc], animated: false)
    }
    homeSlide.slideMenuController()?.closeLeft()
}

I hope this helps you, best regards