How to use Tab Bar Controller in my AppDelegate.swift
import UIKit
#UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
var centerContainer: MMDrawerController?
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
// Override point for customization after application launch.
let rootViewController = self.window!.rootViewController
let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
// Centre View Controller
let centerViewController = mainStoryboard.instantiateViewControllerWithIdentifier("ViewController") as! ViewController
// left view Controller along with centre view controller
let leftViewController = mainStoryboard.instantiateViewControllerWithIdentifier("LeftSideViewController") as! LeftSideViewController
// Right view Controller along with centre view controller
let rightViewController = mainStoryboard.instantiateViewControllerWithIdentifier("RightSideViewController") as! RightSideViewController
let leftSideNav = UINavigationController(rootViewController: leftViewController)
let centerNav = UINavigationController(rootViewController: centerViewController)
let rightNav = UINavigationController(rootViewController: rightViewController)
centerContainer = MMDrawerController(centerViewController: centerNav, leftDrawerViewController: leftSideNav,rightDrawerViewController:rightNav)
centerContainer!.openDrawerGestureModeMask = MMOpenDrawerGestureMode.PanningCenterView;
centerContainer!.closeDrawerGestureModeMask = MMCloseDrawerGestureMode.PanningCenterView;
window!.rootViewController = centerContainer
window!.makeKeyAndVisible()
return true
}
}
Related
I am trying to implement the side navigation menu (one that we have in Android) in iOS App.So far i tried the following:-
AppDelegate.swift :-
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
var bridge: RCTBridge!
func application(_ application: UIApplication,
didFinishLaunchingWithOptions launchOptions:
[UIApplication.LaunchOptionsKey: Any]?) -> Bool {
let sb = UIStoryboard(name: "mystoryboard", bundle: Bundle.main)
let rootViewController: UIViewController =
sb.instantiateViewController(withIdentifier:
"NativeLabelSwiftViewController") as UIViewController
let navigationController = UINavigationController(rootViewController:
rootViewController)
window = UIWindow(frame: UIScreen.main.bounds)
window!.rootViewController = navigationController
window!.makeKeyAndVisible()
return true
}
The above is my AppDelegate class since it is a React Native project we have the generated code as well.Here added the following code to instantiate my rootViewClass(NativeLabelSwift) by following code :-
let sb = UIStoryboard(name: "mystoryboard", bundle: Bundle.main)
let rootViewController: UIViewController =
sb.instantiateViewController(withIdentifier:
"NativeLabelSwiftViewController") as UIViewController
NavigationLabelSwiftViewController.swift(Custom View Class) :-
class NativeLabelSwiftViewController: UIViewController{
var bridge: RCTBridge!
override func viewDidLoad() {
super.viewDidLoad()
title = "Production Tracking"
let btn2 = UIButton(type: .custom)
btn2.frame = CGRect(x: 0, y: 0, width: 30, height: 30)
btn2.addTarget(self,
action:#selector(NativeLabelSwiftViewController.
onBtn2Clicked.(_:)), for: .touchUpInside)
let item2 = UIBarButtonItem(customView: btn2)
self.navigationItem.setLeftBarButton(item2, animated: true)
}
#IBAction func onBtn2Clicked(_ sender: UIBarButtonItem) {
if let navViewController = self.navigationController as?
NavigationController {
// navigation view controller is available
}
else{
// navigation view controller not available
}
}
}
The Navigation Controller has a UIViewController class (NativeLabelSwiftViewController) that has a button in Tab Bar.On Press of the Button i need to access the Navigation Controller method.But i am not able to get the navigation controller using the below code :-
let navViewController = self.navigationController as?
NavigationController; //this is NIL
But
let uiViewController = self.navigationController as?
UINavigationController; //this is not NIL
You are not referring your custom navigation controller in the AppDelegate. You used UINavigationController(rootViewController: rootViewController).
You if you want to use the storyBoard NavigationController, In AppDelegate use -
let nav = UIStoryboard.init(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "NavigationController") as! NavigationController
window = UIWindow(frame: UIScreen.main.bounds)
window!.rootViewController = nav
window!.makeKeyAndVisible()
return true
Note: Don't forget to put an Identifier for the StoryBoard NavigationController.
My app structure:
firstView: UIViewController with UINavigationController -- secondView UITabBarController with several UIViewControllers
start app, firstView:
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
let vc = ViewController()
let navContr = UINavigationController(rootViewController: vc)
self.window? = UIWindow(frame: UIScreen.main.bounds)
self.window?.rootViewController = navContr
self.window?.makeKeyAndVisible()
return true
}
In firtView I click button to open secondView:
let vc = MyTabController() // my UITabBarController
self.navigationController?.pushViewController(vc, animated: true)
start secondView:
class MyTabController: UITabBarController {
override func viewDidLoad() {
super.viewDidLoad()
let gen = MyViewController()
let tabGen = UITabBarItem()
gen.tabBarItem = tabGen
tabGen.image = UIImage(named: "general")
tabGen.title = "Все вопросы"
viewControllers = [gen]
....
}
In my secondView I want set Title, set UISearchControlleer in every tab. But if I write in ViewController
navigationItem.title = "myTitle" nothing changes. I see button "Back" only.
Here's the screenshot
Set title like this in viewDidLoad() Method
self.title = "Your Title"
I have been teaching my self how to develop and I got to the point to where I need guidance from experts. I created some of the user interface programmatically using the MVC structure. My question is how can I embed my navigation controller into my tab bar controller so my tab bar controller can be on every screen. I made the tab bar controller in main.storyboard and referenced it in the View controller I named Home Controller.
let storyboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let tabViewController = storyboard.instantiateViewController(withIdentifier: "TabBar")
self.present(tabViewController, animated: true, completion: nil)
The code above is in the view did load function. I was wondering do I need to change up the root view controller in my app delegates?
window = UIWindow(frame: UIScreen.main.bounds)
window?.makeKeyAndVisible()
let layout = UICollectionViewFlowLayout()
window?.rootViewController = UINavigationController(rootViewController: HomeController(collectionViewLayout: layout))
This is in my finished launched func.
Use following lines
var navigationController = UINavigationController(rootViewController: viewController));
tabBarController.viewControllers = [navigationController,firstViewControllersecondViewController, ]
create a separate UITabBarController class and initialize it in AppDelegate like this:
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
window = UIWindow(frame: UIScreen.main.bounds)
window?.rootViewController = MyTabBarController()
window?.makeKeyAndVisible()
return true
}
and the custom tabBarController
import UIKit
class MyTabBarController: UITabBarController {
override func viewDidLoad() {
super.viewDidLoad()
self.tabBar.barTintColor = UIColor.black
self.tabBar.tintColor = UIColor.white
self.tabBar.unselectedItemTintColor = UIColor.white.withAlphaComponent(0.4)
let firstViewController = FirstViewController()
let firstViewTabBarItem = UITabBarItem(title: "First", image: UIImage(named: "calculator"), selectedImage: UIImage(named: "calculator"))
firstViewController.tabBarItem = firstViewTabBarItem
firstViewController.tabBarItem.tag = 0
let historyViewController = HistoricDataViewController()
historyViewController.tabBarItem = UITabBarItem(tabBarSystemItem: .history, tag: 1)
let tabBarList = [calculateViewController, historyViewController]
viewControllers = tabBarList.map{UINavigationController(rootViewController: $0)}
}
}
Hope this example helps.
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
self.window?.backgroundColor = UIColor.white
self.window?.makeKeyAndVisible()
let tabBarController = UITabBarController()
let myVC1 = ViewController(nibName: "ViewController", bundle: nil)
let myVC2 = ViewController1(nibName: "ViewController1", bundle: nil)
let controllers = [myVC1,myVC2]
tabBarController.viewControllers = controllers
window?.rootViewController = tabBarController
let firstImage = UIImage(named: "Search")
let secondImage = UIImage(named: "Search1")
myVC1.tabBarItem = UITabBarItem(
title: "Pie",
image: firstImage,
tag: 1)
myVC2.tabBarItem = UITabBarItem(
title: "Pizza",
image: secondImage,
tag:2)
// Override point for customization after application launch.
return true
A black screen appears whenever I run the app.
I think you did not pervoid UIWindow size
window = UIWindow(frame: UIScreen.main.bounds)
window?.rootViewController = UITabBarController()
or you some problem with setting root view controller.
You need to add window = UIWindow at the beginning of app Delegate didFinishLaunchingWithOptions: or else there isn't a frame size set. Thats why your getting the black screen.
window = UIWindow(frame: UIScreen.main.bounds)
self.window?.backgroundColor = UIColor.white
let tabBarController = UITabBarController()
let myVC1 = UIViewController()
let myVC2 = UIViewController()
let controllers = [myVC1,myVC2]
I have a problem with my UINavigationController when I try to push another controller.
AppDelegate
let testViewController:ProximityQuestionsIntroductionViewController = ProximityQuestionsIntroductionViewController();
self.navController = UINavigationController(rootViewController: testViewController);
self.window = UIWindow(frame: UIScreen.mainScreen().bounds);
self.window!.rootViewController = navController;
self.window!.backgroundColor = UIColor.whiteColor();
self.window!.makeKeyAndVisible();
return true
ProximityQuestionsIntroductionViewController
class ProximityQuestionsIntroductionViewController:UIViewController {
// Controls
var proximityIntroductionView:ProximityQuestionsIntroductionView!;
// Load components when the view is loaded
override func viewDidLoad() {
super.viewDidLoad();
print("nav in viewDidLoad : \(self.navigationController)");
//Hide Nav bar
self.navigationController?.navigationBarHidden = true;
// Set view
self.proximityIntroductionView = ProximityQuestionsIntroductionView(frame: self.view.frame);
self.view = self.proximityIntroductionView;
}
func start(){
print(self);
print("start in controller");
let nextController = ProximityQuestionsProgressViewController();
print("nav in start : \(self.navigationController)");
self.navigationController?.pushViewController(nextController, animated: true);
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
I call start from my ProximityQuestionsIntroductionView when a button is clicked.
In the log I see "nav in start : nil" and the controller doesn't change.
For more info :
self is really the ProximityQuestionsIntroductionViewController.
the navigation bar is really hidden
So the navigation controller is ok in viewDidLoad but not in the other function.
Can someone tell me why ?
Thanks!
EDIT : AppDelegate
self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let initialViewController = storyboard.instantiateViewControllerWithIdentifier("ProximityIntroduction");
self.navController = storyboard.instantiateViewControllerWithIdentifier("NavigationController") as! UINavigationController;
self.navController?.setViewControllers([initialViewController], animated: false)
self.window?.rootViewController = navController;
self.window?.makeKeyAndVisible();
I add navigation Controller to the story Board and change the ID. But I still have a nil value for the UINavigationControllerin the function start
self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let initialViewController = storyboard.instantiateViewControllerWithIdentifier("ProximityQuestionsIntroductionViewController")
navigationController = UINavigationController.init(rootViewController:initialViewController )
navigationController?.setViewControllers([initialViewController], animated: false)
self.window?.rootViewController = navigationController
self.window?.makeKeyAndVisible()
Put Story board id for this ProximityQuestionsIntroductionViewController
You must mark the window and navController variables as optional:
var window : UIWindow?
var navController : UINavigationController?
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool
{
let testViewController:ProximityQuestionsIntroductionViewController = ProximityQuestionsIntroductionViewController();
self.navController = UINavigationController(rootViewController: testViewController);
if let window = window {
self.window = UIWindow(frame: UIScreen.mainScreen().bounds);
self.window!.rootViewController = navController;
self.window!.backgroundColor = UIColor.whiteColor();
self.window!.makeKeyAndVisible();
}
return true
}
If you created the project from an Xcode template:
Remove the key-value pair for key "Main storyboard file base name" from Info.plist.
Delete the storyboard file Main.storyboard.
The problem came from the view.
Doing this :
// Set view
self.proximityIntroductionView = ProximityQuestionsIntroductionView(frame: self.view.frame);
self.view = self.proximityIntroductionView;
causes the problem. I don't know exactly why but putting all the UIView in the controller directly solved the problem.