Is it possible such that I can have a navigation controller in each of my tabs of a TabBarController while using Xamarin iOS? I've currently setup my storyboard like so (for simplicity, I'm using a single tab)
TabBarController -> NavigationController -> UITableViewController
In my UITableViewController, the following code in my ViewDidLoad method does not change the title nor add the desired button to the top navigation. Have I set up something wrong?
public override void ViewDidLoad()
{
base.ViewDidLoad();
Console.WriteLine("view did load");
Title = "My custom title";
NavigationItem.SetRightBarButtonItem(
new UIBarButtonItem(UIBarButtonSystemItem.Add, (sender, args) =>
{
PerformSegue("CreateRecordSegue", this);
})
, true);
}
Image of storyboard is here: https://ibb.co/m7qq85
The solution is to:
1) Remove the navigation controller that leads into the tab bar controller
2) Create a segue from the home page into the tab bar controller, making the segue type to replace (instead of push)
Related
I have a Tab Bar Controller that has a navigationcontroller with a view controller attached.
For some unknown reason the navigation bar of the view controller does not look like it always does. Instead the view controller's navigation bar is added below the navigation controller's.
When I look at the view controllers embedded in the first navigation controller before the Tab Bar Controller is shown, it works as expected.
This it what it should look like
And this
Now when I segue to the Tab Bar Controller which has a new navigation controller with a view controller embedded it looks like this:
I don't want an additional navigation bar below the one provided by the navigation controller.
I want the title and the item of the view controller merged with the navigation controller.
So the final result should display a row with the back button, the title and the bar button item(Search Image)
What am I missing?
I've also tried adding the navigation items programmatically but nothing seemed to work.
Project on github
My Code
//
// SideViewController.swift
// Sample
//
// Created by on 08.02.20.
// Copyright © 2020 . All rights reserved.
//
import UIKit
class SideViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
title = "Search"
}
#objc func action(){
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destination.
// Pass the selected object to the new view controller.
}
*/
}
There is two ways that I found you can resolve this either by presenting tab bar controller modally or hiding navigation bar of a tab bar controller when view loads.
First solution can be achieved like this:
Open Main.storyboard.
Select last segue in this storyboard(one that navigates to Side storyboard).
Make sure that you have Attribute Inspector selected. Now change Kind attribute to Present Modally and Presentation attribute to Full Screen.
And second solution can be achieved like this:
Create new file by selecting File > New > File > Cocoa Touch Class and press Next.
Change Subclass of: to UITabBarController and name your class to whatever make sense to you.
Then inside of viewDidLoad() paste this navigationController?.navigationBar.isHidden = true in order to hide current navigation bar.
Assign your class to TabViewController in the Side storyboard by selecting TabViewController and changing Class attribute to your class name in Identity Inspector. It should autocomplete when you entering your class name. Press Enter to make sure that you confirm the changes.
Remember to make just one of this two solutions. Which one would it be is up to your needs.
I'm trying to move from a View Controller to another.
I worte this function to use when the user tap on a button to move to the new view controller:
#objc private func infoButtonTap(){
let navVC = UINavigationController()
navVC.addChild(AboutViewController())
self.navigationController?.pushViewController(AboutViewController(), animated: true)
}
The problem is that the new view controller is presented on the screen but I don't have a navigation bar and a back button to move back.
I do not use Storyboard as I want to learn coding the UI.
I tried few things I found here on Stackoverflow but none worked for me.
How can I set the new view controller to have a navigation bar with back button?
UINavigationController has a variable isNavigationBarHidden
#objc private func infoButtonTap(){
let navVC = UINavigationController()
navVC.addChild(AboutViewController())
self.navigationController?.isNavigationBarHidden = false
self.navigationController?.pushViewController(AboutViewController(), animated: true)
}
You need to push the view Controller. Try this
let aboutVC = AboutVC()
self.navigationController?.pushViewController(aboutVC, animated: true)
You don't need to write any code.
Select the Root Navigation Controller the will control the app. In the Inspector Bar, select Simulated Metrics ( The Third Selection from the Right in the Inspector) and Check the Box " Is Initial View Controller". Then connect the next View controller which will be in essence the Landing page for the app. Once you connect other View Controllers to that View controller via a button for instance ( Select the button, then press Control Key + Drag to View Controller, select Show) , you will see the navigation Bar with "Back" displayed. Once that's done, you can add other view controllers and connect them from the landing page view controller and the Navigation Bars will be displayed.
For navigation to be visible and of use in an app , first you need to set up a Navigation controller with a Root view controller i.e your first controller and from there you can use push method on your navigation controller object to push a controller on to the stack.
For eg
let navVC = UINavigationController.init(rootViewController: YourFirstViewControllerObject())
navVC.pushViewController(NewViewControllerObj(), animated: true)
I have a problem, I want to open two view Controllers on single tab from to different way.
Like:
Login Screen --> Home Screen --> On home screen two button A & B
1 When click on the button A, open A controller on tab controller tab1
2 When click on the button B, open B controller on tab controller tab1
I have 5 tab in tab controller.
Please help me for that issue.
Please refer attached screen for more help.
Thanks,
you can replace ViewController By using this
func tabBarController(tabBarController: UITabBarController, didSelectViewController viewController: UIViewController) -> Bool {
let selectIndex : NSInteger = (tabBarController.viewControllers?.index(of: viewController))!
if (selectIndex == 1) {
let vc = UIViewController() // your new Controller
var allviews = tabBarController.viewControllers
allviews?.remove(at: selectIndex)
allviews?.insert(vc, at: selectIndex)
tabBarController.setViewControllers(allviews, animated: true)
return false;
}
return true;
}
(Please add some more information to your question, or at least code to know what have you tried.)
By your question, It seems you need a Tab Bar Controller.
You use tab bar controller to organize your app into one or more distinct modes of operation. The view hierarchy of a tab bar controller is self contained. It is composed of views that the tab bar controller manages directly and views that are managed by content view controllers you provide. Each content view controller manages a distinct view hierarchy, and the tab bar controller coordinates the navigation between the view hierarchies.
I have a view controller which has embedded a navigation controller.
From this view controller I am being able to change the title of the navigation bar with navigationItem.title = "title".
Furthermore I have another tableview controller and I want to update the tile of the navigation controller also from here, this tableview controller acts as a Slide Out Menu for the first view controller.
Navigation controller and tableview controller are not connected directly but I use a library called SWRevealViewController to create and connect the slide out menu with first view controller.
I have tried these codes:ViewController().navigationItem.title = "secondTitle"
I have also tried to put the process of changing the title in first controller in function and create an instance like :ViewController().updateNavTitle(), also tried to crete a segues but without any result.
Create a String variable in your first class and access this property in your Slide Out controller and and update it. Now in your first controller's in viewWillAppear method update the title like below.
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
if self.updatedTitle != nil {
self.navigationItem.title = self.updatedTitle//Create this String variable.
}
}
I have a view where I'm letting a user edit a EntryElement. I register the click event fine through the delegate of the "Done" button however, I can't get it to dismiss the current view to go to the previous view though. Here's what I'm trying right now:
AppDelegate.navigation.PresentedViewController.DismissViewController(true, null);
I've also tried:
AppDelegate.navigation.PresentedViewController.RemoveFromParentViewController();
navigation is just a UINavigationController
EDIT:
I am using Monotouch.Dialog to build out all of the views. This view is created via a method. I want it to go back to the previous view once they click the done button. Here's the contents of the method:
public static void EditClientTypeView (string typeName, string typeId)
{
DialogViewController editClientTypeVC;
UIBarButtonItem doneButton = new UIBarButtonItem (UIBarButtonSystemItem.Done);
EntryElement element = new EntryElement("Type Name", "Name of client type", typeName, false);
var root = new RootElement ("Edit Type") {
new Section () {
element
}
};
editClientTypeVC = new DialogViewController (root, true);
editClientTypeVC.NavigationItem.RightBarButtonItem = doneButton;
doneButton.Clicked += (sender, e) => {
// Need to save the edited client type to the database
Console.WriteLine("Done button clicked signifying the user is finished editing");
AppDelegate.navigation.PresentedViewController.RemoveFromParentViewController();
//AppDelegate.navigation.DismissViewController(true, null);
};
AppDelegate.navigation.PushViewController(editClientTypeVC, true);
}
Any help is appreciated!
Since you are PUSHING a view controller onto the Navigation Stack, you dismiss it by POPPING it off the stack. UINavigationController has three POP methods
PopToRootViewController - goes all the way back to the root view of your navigation controller
PopToViewController - pops back to a specific view controller
PopViewController - pops back to the "previous" view controller