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NavigationController with Segue
The screens presented by a navigation interface typically mimic the hierarchical organization of your data. At each level of the hierarchy, you provide an appropriate screen (managed by a custom view controller) to display the content at that level. Figure 1 shows an example of the navigation interface presented by the Settings application in iOS Simulator. The first screen presents the user with the list of applications that contain preferences. Selecting an application reveals individual settings and groups of settings for that application. Selecting a group yields more settings and so on. For all but the root view, the navigation controller provides a back button to allow the user to move back up the hierarchy.
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‎swift-beginner-projects/NavigationControllerDemo/NavigationControllerDemo.xcodeproj/project.pbxproj

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‎swift-beginner-projects/NavigationControllerDemo/NavigationControllerDemo.xcodeproj/project.xcworkspace/contents.xcworkspacedata

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‎swift-beginner-projects/NavigationControllerDemo/NavigationControllerDemo/AppDelegate.swift

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//
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// AppDelegate.swift
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// NavigationControllerDemo
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//
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// Created by Rajesh Dalsaniya on 02/02/17.
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// Copyright © 2017 Rajesh Dalsaniya. All rights reserved.
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//
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import UIKit
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@UIApplicationMain
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class AppDelegate: UIResponder, UIApplicationDelegate {
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var window: UIWindow?
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func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
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// Override point for customization after application launch.
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return true
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}
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func applicationWillResignActive(_ application: UIApplication) {
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// Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
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// Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
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}
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func applicationDidEnterBackground(_ application: UIApplication) {
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// Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
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// If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
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}
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func applicationWillEnterForeground(_ application: UIApplication) {
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// Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
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}
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func applicationDidBecomeActive(_ application: UIApplication) {
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// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
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}
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func applicationWillTerminate(_ application: UIApplication) {
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// Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
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}
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}
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