ios - Swift 自定义后退按钮和目的地

Question

我目前在我的应用程序中使用 SWRevealViewController 作为侧边栏菜单。当我单击其中一个选项时，目标 View Controller 没有“后退”按钮，因为它不是来自正确的 View Controller (即要返回的页面)。

因此我想在目标 View Controller 上手动创建一个后退按钮，它将返回到主视图 Controller 。

我看过这里的代码:How do I manually set the "Back" destination in iOS apps

但我正在努力在 Swift 中实现它(一个接一个的错误!)。有什么帮助吗？谢谢!

编辑

我已经尝试了下面的建议，但是后退按钮没有出现。这可能与我将导航栏隐藏在其他 View 中并在目标 View 上执行以下操作有关:

override func viewDidLoad() {
    super.viewDidLoad()
    navigationController.setNavigationBarHidden(false, animated:true)
    var myBackButton:UIButton = UIButton.buttonWithType(UIButtonType.Custom) as UIButton
    myBackButton.addTarget(self, action: "popToRoot:", forControlEvents: UIControlEvents.TouchUpInside)

    var myCustomBackButtonItem:UIBarButtonItem = UIBarButtonItem(customView: myBackButton)
    self.navigationItem.leftBarButtonItem = myCustomBackButtonItem
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
}

func popToRoot(sender:UIBarButtonItem){
    self.navigationController.popToRootViewControllerAnimated(true)
}

不确定为什么后退按钮不显示？

编辑

这是来 self 的侧边栏 View Controller 的 prepareForSegue。如果有一种方法可以检查 segue 标识符“test”，那么我可以从这里设置后退按钮吗？

- (void) prepareForSegue: (UIStoryboardSegue *) segue sender: (id) sender
{
// Set the title of navigation bar by using the menu items
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
UINavigationController *destViewController = (UINavigationController*)segue.destinationViewController;
destViewController.title = [[_menuItems objectAtIndex:indexPath.row] capitalizedString];


if ( [segue isKindOfClass: [SWRevealViewControllerSegue class]] ) {
    SWRevealViewControllerSegue *swSegue = (SWRevealViewControllerSegue*) segue;

    swSegue.performBlock = ^(SWRevealViewControllerSegue* rvc_segue, UIViewController* svc, UIViewController* dvc) {

        UINavigationController* navController = (UINavigationController*)self.revealViewController.frontViewController;
        [navController setViewControllers: @[dvc] animated: NO ];
        [self.revealViewController setFrontViewPosition: FrontViewPositionLeft animated: YES];
    };

}

}

Answer 1

你可以像这样在swift中写出来

写这个在navigationController上添加按钮

    navigationController.setNavigationBarHidden(false, animated:true)
    var myBackButton:UIButton = UIButton.buttonWithType(UIButtonType.Custom) as UIButton
    myBackButton.addTarget(self, action: "popToRoot:", forControlEvents: UIControlEvents.TouchUpInside)
    myBackButton.setTitle("YOUR TITLE", forState: UIControlState.Normal)
    myBackButton.setTitleColor(UIColor.blueColor(), forState: UIControlState.Normal)
    myBackButton.sizeToFit()
    var myCustomBackButtonItem:UIBarButtonItem = UIBarButtonItem(customView: myBackButton)
     self.navigationItem.leftBarButtonItem  = myCustomBackButtonItem

这将弹出到 rootViewController

    func popToRoot(sender:UIBarButtonItem){
       self.navigationController.popToRootViewControllerAnimated(true)
    }