Add intro.

Author: Metaxa007

OpenDocumentReader/AppDelegate.swift

@@ -71,5 +71,12 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 
         return true
     }
+    
+    /// Set orientations you want to be allowed in this property by default
+    var orientationLock = UIInterfaceOrientationMask.all
+
+    func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
+            return self.orientationLock
+    }
 }
 

OpenDocumentReader/AppUtility.swift

@@ -0,0 +1,30 @@
+//
+//  AppUtility.swift
+//  OpenDocumentReader
+//
+//  Created by Artsem Lemiasheuski on 19.12.19.
+//  Copyright © 2019 Thomas Taschauer. All rights reserved.
+//
+
+import Foundation
+import UIKit
+
+struct AppUtility {
+
+    static func lockOrientation(_ orientation: UIInterfaceOrientationMask) {
+
+        if let delegate = UIApplication.shared.delegate as? AppDelegate {
+            delegate.orientationLock = orientation
+        }
+    }
+
+    /// Added method to adjust lock and rotate to the desired orientation
+    static func lockOrientation(_ orientation: UIInterfaceOrientationMask, andRotateTo rotateOrientation:UIInterfaceOrientation) {
+
+        self.lockOrientation(orientation)
+
+        UIDevice.current.setValue(rotateOrientation.rawValue, forKey: "orientation")
+        UINavigationController.attemptRotationToDeviceOrientation()
+    }
+
+}

OpenDocumentReader/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

OpenDocumentReader/Assets.xcassets/onboard1.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "onboard1@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "onboard1@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "onboard1@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

OpenDocumentReader/Assets.xcassets/onboard1.imageset/onboard1@1x.png

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "onboard2@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "onboard2@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "onboard2@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}