Fix: iOS 12 black screen

App16/AppDelegate.swift

@@ -6,93 +6,78 @@
 //  Copyright © 2020 X-TECH. All rights reserved.
 //
 
+
 import UIKit
 import IQKeyboardManagerSwift
 import UserNotifications
 
 @UIApplicationMain
-
 class AppDelegate: UIResponder, UIApplicationDelegate {
-
-
-
-    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
-        
-        IQKeyboardManager.shared.enable = true
-        
-        UNUserNotificationCenter.current().delegate = self
-        //Notifications
-        if #available(iOS 10.0, *) {
-            UNUserNotificationCenter.current().delegate = self
-            
-            let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
-            UNUserNotificationCenter.current().requestAuthorization(
-                options: authOptions,
-                completionHandler: {_, _ in })
-        } else {
-            let settings: UIUserNotificationSettings =
-                UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
-            application.registerUserNotificationSettings(settings)
-        }
-        
-        UIApplication.shared.registerForRemoteNotifications()
-        application.registerForRemoteNotifications()
+    var window: UIWindow?
+    
+    func application(_ application: UIApplication, willFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool {
         
         UINavigationBar.appearance().barTintColor = UIColor(red: 0/255, green: 137/255, blue: 40/255, alpha: 1)
+        UINavigationBar.appearance().titleTextAttributes = [NSAttributedString.Key.foregroundColor: UIColor.white]
         UINavigationBar.appearance().tintColor = .white
         
         UINavigationBar.appearance().isTranslucent = false
         
+        if #available(iOS 13.0, *) {
+            // In iOS 13 setup is done in SceneDelegate
+        } else {
+            let window = UIWindow(frame: UIScreen.main.bounds)
+            self.window = window
+            
+            let mainstoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
+            let newViewcontroller:UIViewController = mainstoryboard.instantiateViewController(withIdentifier: "MainViewController") as! MainViewController
+            window.rootViewController = newViewcontroller
+        }
+        
+        IQKeyboardManager.shared.enable = true
+        
         return true
     }
     
-    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
-        print("APNs token retrieved: \(deviceToken)")
-        
-        let tokenParts = deviceToken.map { data -> String in
-            return String(format: "%02.2hhx", data)
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+        if #available(iOS 13.0, *) {
+            // In iOS 13 setup is done in SceneDelegate
+        } else {
+            self.window?.makeKeyAndVisible()
         }
-        let token = tokenParts.joined()
-        print(token)
-        UserDefaultsHelper.set(alias: .deviceToken, value: token)
+        
+        return true
     }
-
+    
+    func applicationWillResignActive(_ application: UIApplication) {
+        // Not called under iOS 13 - See SceneDelegate sceneWillResignActive
+    }
+    
+    func applicationDidEnterBackground(_ application: UIApplication) {
+        // Not called under iOS 13 - See SceneDelegate sceneDidEnterBackground
+    }
+    
+    func applicationWillEnterForeground(_ application: UIApplication) {
+        // Not called under iOS 13 - See SceneDelegate sceneWillEnterForeground
+    }
+    
+    func applicationDidBecomeActive(_ application: UIApplication) {
+        // Not called under iOS 13 - See SceneDelegate sceneDidBecomeActive
+    }
+    
     // MARK: UISceneSession Lifecycle
+    
     @available(iOS 13.0, *)
     func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
         // Called when a new scene session is being created.
         // Use this method to select a configuration to create the new scene with.
         return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
     }
-
+    
     @available(iOS 13.0, *)
     func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
         // Called when the user discards a scene session.
         // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
         // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
     }
-
-
 }
-
-// [START ios_10_message_handling]
-@available(iOS 10, *)
-extension AppDelegate : UNUserNotificationCenterDelegate {
-    
-    // Receive displayed notifications for iOS 10 devices.
-    func userNotificationCenter(_ center: UNUserNotificationCenter,
-                                willPresent notification: UNNotification,
-                                withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
-        // let userInfo = notification.request.content.userInfo
-        //        if let messageID = userInfo[gcmMessageIDKey] {
-        //            print("Message ID: \(messageID)")
-        //        }
-        
-        // Print full message.
-        // print(userInfo)
-        
-        // Change this to your preferred presentation option
-        completionHandler([])
-    }
-}
-

App16/Base.lproj/Main.storyboard

@@ -11,7 +11,7 @@
         <!--Main View Controller-->
         <scene sceneID="tne-QT-ifu">
             <objects>
-                <viewController id="BYZ-38-t0r" customClass="MainViewController" customModule="App16" customModuleProvider="target" sceneMemberID="viewController">
+                <viewController storyboardIdentifier="MainViewController" id="BYZ-38-t0r" customClass="MainViewController" customModule="App16" customModuleProvider="target" sceneMemberID="viewController">
                     <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
                         <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>

App16/SceneDelegate.swift

@@ -12,13 +12,11 @@ import UIKit
 class SceneDelegate: UIResponder, UIWindowSceneDelegate {
 
     var window: UIWindow?
-
-
+   
     func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
         // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
         // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
         // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
-        guard let _ = (scene as? UIWindowScene) else { return }
     }
 
     func sceneDidDisconnect(_ scene: UIScene) {
@@ -48,7 +46,4 @@ class SceneDelegate: UIResponder, UIWindowSceneDelegate {
         // Use this method to save data, release shared resources, and store enough scene-specific state information
         // to restore the scene back to its current state.
     }
-
-
 }
-

App16/Views/Form/Create/FormCreateViewController.xib

@@ -32,7 +32,7 @@
                     <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
                     <subviews>
                         <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="Kwt-kc-N2e">
-                            <rect key="frame" x="0.0" y="0.0" width="414" height="646"/>
+                            <rect key="frame" x="0.0" y="0.0" width="414" height="621"/>
                             <subviews>
                                 <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="Azo-7T-DFW" customClass="IQPreviousNextView" customModule="IQKeyboardManagerSwift">
                                     <rect key="frame" x="40" y="55" width="334" height="50"/>
@@ -292,7 +292,7 @@
                                 <constraint firstAttribute="trailing" secondItem="NyF-FR-xam" secondAttribute="trailing" constant="40" id="De8-qX-Ukc"/>
                                 <constraint firstAttribute="trailing" secondItem="JD7-Yf-hQj" secondAttribute="trailing" constant="40" id="DlW-PC-fOe"/>
                                 <constraint firstItem="NyF-FR-xam" firstAttribute="leading" secondItem="Kwt-kc-N2e" secondAttribute="leading" constant="40" id="FI1-KC-yTn"/>
-                                <constraint firstAttribute="bottom" secondItem="NyF-FR-xam" secondAttribute="bottom" constant="45" id="FW4-Nj-AYg"/>
+                                <constraint firstAttribute="bottom" secondItem="NyF-FR-xam" secondAttribute="bottom" constant="20" id="FW4-Nj-AYg"/>
                                 <constraint firstAttribute="trailing" secondItem="XIU-P6-Fzz" secondAttribute="trailing" constant="40" id="GAa-mM-fJ1"/>
                                 <constraint firstItem="D1C-8s-tPP" firstAttribute="leading" secondItem="Kwt-kc-N2e" secondAttribute="leading" constant="40" id="JBl-Oe-bk3"/>
                                 <constraint firstAttribute="trailing" secondItem="Azo-7T-DFW" secondAttribute="trailing" constant="40" id="KFI-Av-Xcb"/>

App16/Views/Main/MainViewController.swift

@@ -62,5 +62,4 @@ class MainViewController: UIViewController {
             }
         }
     }
-    
 }