In my case, I'm making an app for real-time chat. I'm using large titles and search bar inside of my main view. However I wanted to add tabBar to my app navigationController and tabBar not working correct.
NOTE: I'm doing everything with code, please not tell me about storyboard.
Here is what supposed to be:
What is happening when I add tabBar:
AppDelegate.swift:
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
UIApplication.shared.statusBarStyle = .lightContent
FirebaseApp.configure()
window = UIWindow(frame: UIScreen.main.bounds)
window?.makeKeyAndVisible()
window?.rootViewController = UINavigationController(rootViewController: TabBarController())
return true
}
TabBarController.swift:
override func viewDidLoad() {
super.viewDidLoad()
let messagesController = UINavigationController(rootViewController: MessagesController())
messagesController.tabBarItem.title = "Sohbetler"
messagesController.tabBarItem.image = UIImage(named: "chats")
viewControllers = [messagesController]
}
You put two navigation one for tabbar and second for controller hide one navigation bar and your problem will solve
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
UIApplication.shared.statusBarStyle = .lightContent
FirebaseApp.configure()
window = UIWindow(frame: UIScreen.main.bounds)
window?.makeKeyAndVisible()
let objNav = UINavigationController(rootViewController: TabBarController())
objNav.isNavigationBarHidden = true
window?.rootViewController = objNav
return true
}
try the following line in your viewcontroller where you want to show the tabbar
self.tabBarController?.tabBar.isHidden = false
Related
I've been working on an iOS app and I'm trying to display a navigation bar to my app. I use a storyboard to just work on some basic UI, but for the other part like the navigation bar, I'm trying to implement it by code.
In the AppDelegate.swift file, I put the following code.
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool {
window = UIWindow(frame: UIScreen.main.bounds)
UINavigationBar.appearance().tintColor = .black
window?.rootViewController = FirstViewController()
window?.rootViewController?.view.backgroundColor = UIColor.white
window?.makeKeyAndVisible()
return true
}
However, the navigation bar doesn't appear on FistViewController.
In the FirstViewController, I also put the following code into the viewwillappear function to display the navigation bar.
self.navigationController?.isNavigationBarHidden = false
self.navigationController?.navigationBar.barStyle = .black
As I said, I have a storyboard, but I only use it for setting FirstViewController as isInitialView controller. I also have a table view on the FirstViewController and I can see it, but I don't see the navigation bar.
So I was wondering if I make a mistake in writing code to display the navigation bar...
Does anyone know what I'm missing in here?
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
let viewController = FirstViewController()
let navigationController = UINavigationController(rootViewController: viewController)
self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
self.window?.rootViewController = navigationController
self.window?.makeKeyAndVisible()
return true
}
let viewController = FirstViewController()
let navVc = UINavigationController(rootViewController: viewController)
window?.rootViewController = navVc
You can not see your navigation bar because you are not embedding your current viewcontroller in to a navigation controller.
Since you are using storyboard you should embed your ViewController in a Navigation controller. You can do that by,
first opening your Main.storyboard file
Select your initial ViewController
Going into Editor > Embed in > Navigation Controller
or you could do it programmatically by refering #jignesh's answer
I am a newbie trying to learn ios programming.
So, I have Xcode 11.1
I deleted the main story board.
My AppDelegate
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
window = UIWindow(frame: UIScreen.main.bounds)
window?.makeKeyAndVisible()
window?.rootViewController = ViewController() //UINavigationController(rootViewController: ViewController())
return true
}
My ViewController
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .white
}
}
I removed the references of main from project settings and Info.plist
But, when I try to run the app, the ios simulator shows a black screen
If it helps, trying to follow this tutorial: https://www.youtube.com/watch?v=3Xv1mJvwXok&list=PL0dzCUj1L5JGKdVUtA5xds1zcyzsz7HLj
I am trying to make a UITabBarController and a UINavigationController programmatically. I've tried many tutorials but most use Swift 3 which is too outdated and doesn't work.
AppDelegate.swift Snippet:
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
window = UIWindow(frame: UIScreen.main.bounds)
let journalVC = JournalTableViewController()
let navController = UINavigationController(rootViewController: journalVC)
window?.rootViewController = navController
window?.makeKeyAndVisible()
return true
}
JournalTableViewController.swift Snippet:
var tabBarCnt = UITabBarController()
override func viewDidLoad() {
super.viewDidLoad()
tabBarCnt = UITabBarController()
tabBarCnt.tabBar.barStyle = .black
let journalVC = JournalTableViewController()
journalVC.tabBarItem = UITabBarItem(tabBarSystemItem: .favorites, tag: 0)
tabBarCnt.viewControllers = [journalVC]
self.view.addSubview(tabBarCnt.view)
}
What works:
The build loads onto the simulator
What doesn't work:
The build crashes once loading onto the simulator
After crashing, the error Thread 1: EXC_BAD_ACCESS (code=2, address=0x7ffee6c2ada8) apears over this line 12 of JournalTableViewController.swift Snippet
If you are going to combine a UITabBarController and a UINavigationController then you will want the tab bar controller to be the root view controller. Each tab can have its own navigation controller if required.
If you make the navigation controller the root, then as soon as you push a new view controller, the tab bar will disappear. By making the tab bar the root, you can have a series of navigation hierarchies and switch quickly between them using the tab buttons.
AppDelegate.swift
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
window = UIWindow(frame: UIScreen.main.bounds)
let journalVC = JournalViewController()
let navController = UINavigationController(rootViewController: journalVC)
let tabBarController = UITabBarController()
navController.tabBarItem = UITabBarItem(tabBarSystemItem: .favorites, tag: 0)
tabBarController.viewControllers = [navController]
window?.rootViewController = tabBarController
window?.makeKeyAndVisible()
return true
}
There is no need for any specific code in your view controller class.
JournalTableViewController.swift Snippet:
override func viewDidLoad() {
super.viewDidLoad()
}
I think there is a typo in your snippet. In the following code, we added an intermediate vc to solve recursive problems.
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
window = UIWindow(frame: UIScreen.main.bounds)
let journalVC = JournalViewController()
let navController = UINavigationController(rootViewController: journalVC)
window?.rootViewController = navController
window?.makeKeyAndVisible()
return true
}
Here is journal vc:
class JournalViewController: UIViewController{
var tabBarCnt = UITabBarController()
override func viewDidLoad() {
super.viewDidLoad()
tabBarCnt = UITabBarController()
tabBarCnt.tabBar.barStyle = .black
let journalVC = JournalTableViewController()
journalVC.tabBarItem = UITabBarItem(tabBarSystemItem: .favorites, tag: 0)
tabBarCnt.viewControllers = [journalVC]
self.view.addSubview(tabBarCnt.view)
}
}
while the tableviewcontroller should be like this:
class JournalTableViewController: UITableViewController{
}
With a very basic single view application, I've deleted the main storyboard file and removed any references to it. As such I'm setting the window rootViewController programmatically. However, while this displays the single view (containing a label) correctly in simulator, it displays a black screen when running it on device. Here is the only code for the app.
#UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
window = UIWindow(frame: UIScreen.main.bounds)
window?.rootViewController = DummyViewController()
window?.makeKeyAndVisible()
return true
}
I've removed the entry for Main storyboard from the info.plist file, as well as the 'Main Interface' entry in the General settings.
I'm using Swift 3 and targeting an iOS 8 device. I'm using XCode 8.3.1.
There is no output in the console, and there are no exceptions. The viewDidLoad function is even triggering on breakpoint, so the codepath seems to be running correctly.
Any ideas?
Here's the bare bones code for DummyViewController upon request.
class DummyViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
}
General settings showing no reference to Main Interface
Here is the image for the .xib linked to DummyViewController
** The solution to get around this case is to manually specify the .xib to load for the DummyViewController **
It looks like the ViewController is not set to display anything. Unless you are using a xib (in which case you would need to load the view controller in a different way, see below), there is nothing describing how the ViewController's view should render.
To test this out, you can add the line self.view.backgroundColor = UIColor.red to the ViewController's viewDidLoad() method, then run it again on the device- if the background color turns red, then hooray! The next step will be programmatically adding a UILabel.
Loading UIViewController From a XIB
let vc = MyViewController(nibName: "xibname", bundle: nil)
Alternatively, you can mask the loading by adding a custom init inside MyViewController:
class MyViewController: UIViewController {
required init() {
super.init(nibName: "xibname", bundle: nil)
}
}
(Thank you zonily-jame for the addition of hiding it in the class)
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
let mainStoryboardIpad : UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let loginView : BaseClassVC = mainStoryboardIpad.instantiateViewControllerWithIdentifier("BaseClassVC") as BaseClassVC
let navigationController = UINavigationController(rootViewController: loginView)
self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
self.window?.rootViewController = navigationController
self.window?.makeKeyAndVisible()
return true
}
change Your window root as and set color
let viewController:DummyViewController = DummyViewController()
self.window?.backgroundColor = UIColor.white
self.window?.rootViewController = viewController
And change your controller
override func viewDidLoad() {
self.view.backgroundColor = UIColor.white
}
You just need to initialize viewcontroller object and implement white background color to its instance.
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
window = UIWindow(frame: UIScreen.main.bounds)
//Add below 2 lines
let vc = DummyViewController()
vc.view.backgroundColor = .white
window?.rootViewController = vc
window?.makeKeyAndVisible()
return true
}
i`m trying to add a View over the all TabBarController, I tried this:
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
self.window = UIWindow(frame: CGRectMake(0, 0,
CGRectGetWidth(UIScreen.mainScreen().bounds),
CGRectGetHeight(UIScreen.mainScreen().bounds)))
self.window!.backgroundColor = UIColor.whiteColor()
let tabBar : UITabBarController = UITabBarControllerHelper.generate() //Create the TabBarController, works fine
let videoController : UIViewController = VideoViewController()
videoController.view.layer.zPosition = 1
tabBar.view.addSubview(videoController.view)
self.window!.rootViewController = tabBar
self.window!.makeKeyAndVisible()
return true
}
But this don`t work, only TabBarController is rendered. I changed the self.window!.rootViewController to test to draw the videoController and works fine too. The problem is: I can`t merge the views.