Refactoring ViewController and Spring class

README.md

@@ -1,13 +1,13 @@
-## Updated for Swift 4.2
-Requires Xcode 10 and Swift 4.2.
+## Updated for Swift 5
+Requires Xcode 13 and Swift 5.5
 
 ## Installation
 Drop in the Spring folder to your Xcode project (make sure to enable "Copy items if needed" and "Create groups").
 
 Or via CocoaPods:
 ```
 use_frameworks!
-pod 'Spring', :git => 'https://github.com/MengTo/Spring.git'
+pod 'Spring', :git => 'https://github.com/LexDeBash/Spring.git'
 ```
 
 ## Usage with Storyboard

Spring.podspec

@@ -1,13 +1,13 @@
 Pod::Spec.new do |s|
   s.name = 'Spring'
-  s.version = '1.0.6'
+  s.version = '1.0.9'
   s.license = 'MIT'
   s.summary = 'A library to simplify iOS animations in Swift.'
-  s.homepage = 'https://github.com/MengTo/Spring'
+  s.homepage = 'https://github.com/LexDeBash/Spring'
   s.authors = { 'Meng To' => 'meng@designcode.io' }
-  s.source = { :git => 'https://github.com/MengTo/Spring.git', :tag => s.version.to_s }
+  s.source = { :git => 'https://github.com/LexDeBash/Spring.git', :tag => s.version.to_s }
   s.requires_arc = true
-  s.ios.deployment_target = '8.0'
+  s.ios.deployment_target = '14.0'
   s.tvos.deployment_target = '11.0'
   s.source_files = 'Spring/*.swift'
   s.ios.resources = ['Spring/*.xib', 'SpringApp/*.xcassets']

Spring/DesignableTabBarController.swift

@@ -47,7 +47,7 @@ import UIKit
     @IBInspectable var firstSelectedImage: UIImage? {
         didSet {
             if let image = firstSelectedImage {
-                var tabBarItems = self.tabBar.items as [UITabBarItem]?
+                let tabBarItems = self.tabBar.items as [UITabBarItem]?
                 tabBarItems?[0].selectedImage = image.withRenderingMode(UIImage.RenderingMode.alwaysTemplate)
             }
         }
@@ -56,7 +56,7 @@ import UIKit
     @IBInspectable var secondSelectedImage: UIImage? {
         didSet {
             if let image = secondSelectedImage {
-                var tabBarItems = self.tabBar.items as [UITabBarItem]?
+                let tabBarItems = self.tabBar.items as [UITabBarItem]?
                 tabBarItems?[1].selectedImage = image.withRenderingMode(UIImage.RenderingMode.alwaysTemplate)
             }
         }
@@ -65,7 +65,7 @@ import UIKit
     @IBInspectable var thirdSelectedImage: UIImage? {
         didSet {
             if let image = thirdSelectedImage {
-                var tabBarItems = self.tabBar.items as [UITabBarItem]?
+                let tabBarItems = self.tabBar.items as [UITabBarItem]?
                 tabBarItems?[2].selectedImage = image.withRenderingMode(UIImage.RenderingMode.alwaysTemplate)
             }
         }
@@ -74,7 +74,7 @@ import UIKit
     @IBInspectable var fourthSelectedImage: UIImage? {
         didSet {
             if let image = fourthSelectedImage {
-                var tabBarItems = self.tabBar.items as [UITabBarItem]?
+                let tabBarItems = self.tabBar.items as [UITabBarItem]?
                 tabBarItems?[3].selectedImage = image.withRenderingMode(UIImage.RenderingMode.alwaysTemplate)
             }
         }
@@ -83,7 +83,7 @@ import UIKit
     @IBInspectable var fifthSelectedImage: UIImage? {
         didSet {
             if let image = fifthSelectedImage {
-                var tabBarItems = self.tabBar.items as [UITabBarItem]?
+                let tabBarItems = self.tabBar.items as [UITabBarItem]?
                 tabBarItems?[4].selectedImage = image.withRenderingMode(UIImage.RenderingMode.alwaysTemplate)
             }
         }

Spring/KeyboardLayoutConstraint.swift

@@ -26,25 +26,34 @@ import UIKit
 @available(tvOS, unavailable)
 public class KeyboardLayoutConstraint: NSLayoutConstraint {
 
-    private var offset : CGFloat = 0
-    private var keyboardVisibleHeight : CGFloat = 0
+    private var offset: CGFloat = 0
+    private var keyboardVisibleHeight: CGFloat = 0
 
     @available(tvOS, unavailable)
     override public func awakeFromNib() {
         super.awakeFromNib()
 
         offset = constant
 
-        NotificationCenter.default.addObserver(self, selector: #selector(KeyboardLayoutConstraint.keyboardWillShowNotification(_:)), name: UIWindow.keyboardWillShowNotification, object: nil)
-        NotificationCenter.default.addObserver(self, selector: #selector(KeyboardLayoutConstraint.keyboardWillHideNotification(_:)), name: UIWindow.keyboardWillHideNotification, object: nil)
+        NotificationCenter.default.addObserver(
+            self,
+            selector: #selector(KeyboardLayoutConstraint.keyboardWillShowNotification),
+            name: UIWindow.keyboardWillShowNotification,
+            object: nil
+        )
+        NotificationCenter.default.addObserver(
+            self,
+            selector: #selector(KeyboardLayoutConstraint.keyboardWillHideNotification),
+            name: UIWindow.keyboardWillHideNotification,
+            object: nil
+        )
     }
 
     deinit {
         NotificationCenter.default.removeObserver(self)
     }
 
     // MARK: Notification
-
     @objc func keyboardWillShowNotification(_ notification: Notification) {
         if let userInfo = notification.userInfo {
             if let frameValue = userInfo[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue {
@@ -61,24 +70,19 @@ public class KeyboardLayoutConstraint: NSLayoutConstraint {
                 UIView.animate(
                     withDuration: TimeInterval(duration.doubleValue),
                     delay: 0,
-                    options: options,
-                    animations: {
-                        UIApplication.shared.keyWindow?.layoutIfNeeded()
+                    options: options) {
+                        UIApplication.shared.windows.first?.layoutIfNeeded()
                         return
-                    }, completion: { finished in
-                })
+                    }
             default:
-
                 break
             }
-
         }
-
     }
 
     @objc func keyboardWillHideNotification(_ notification: NSNotification) {
         keyboardVisibleHeight = 0
-        self.updateConstant()
+        updateConstant()
 
         if let userInfo = notification.userInfo {
 
@@ -90,20 +94,18 @@ public class KeyboardLayoutConstraint: NSLayoutConstraint {
                 UIView.animate(
                     withDuration: TimeInterval(duration.doubleValue),
                     delay: 0,
-                    options: options,
-                    animations: {
-                        UIApplication.shared.keyWindow?.layoutIfNeeded()
+                    options: options) {
+                        UIApplication.shared.windows.first?.layoutIfNeeded()
                         return
-                    }, completion: { finished in
-                })
+                    }
             default:
                 break
             }
         }
     }
 
     func updateConstant() {
-        self.constant = offset + keyboardVisibleHeight
+        constant = offset + keyboardVisibleHeight
     }
 
 }

Spring/LoadingView.swift

@@ -50,7 +50,7 @@ public extension UIView {
         static let Tag = 1000
     }
 
-    public func showLoading() {
+    func showLoading() {
 
         if self.viewWithTag(LoadingViewConstants.Tag) != nil {
             // If loading view is already found in current view hierachy, do nothing
@@ -68,7 +68,7 @@ public extension UIView {
         })
     }
 
-    public func hideLoading() {
+    func hideLoading() {
 
         if let loadingXibView = self.viewWithTag(LoadingViewConstants.Tag) {
             loadingXibView.alpha = 1

Spring/LoadingView.xib

@@ -1,17 +1,20 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="6254" systemVersion="14B25" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES">
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="19162" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6247"/>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="19144"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <objects>
         <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
         <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
         <view contentMode="scaleToFill" id="2ih-bH-VRI" customClass="LoadingView" customModule="Spring" customModuleProvider="target">
-            <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+            <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
             <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
             <subviews>
                 <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="19J-d9-rcw" customClass="SpringView" customModule="Spring" customModuleProvider="target">
-                    <rect key="frame" x="275" y="275" width="50" height="50"/>
+                    <rect key="frame" x="182" y="423" width="50" height="50"/>
                     <subviews>
                         <imageView userInteractionEnabled="NO" contentMode="scaleToFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="loading" translatesAutoresizingMaskIntoConstraints="NO" id="e5h-jP-Opi">
                             <rect key="frame" x="0.0" y="0.0" width="50" height="50"/>
@@ -21,7 +24,7 @@
                             </constraints>
                         </imageView>
                     </subviews>
-                    <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="calibratedWhite"/>
+                    <color key="backgroundColor" red="0.0" green="0.0" blue="0.0" alpha="0.0" colorSpace="custom" customColorSpace="sRGB"/>
                     <constraints>
                         <constraint firstAttribute="centerY" secondItem="e5h-jP-Opi" secondAttribute="centerY" id="094-1B-RGw"/>
                         <constraint firstAttribute="height" constant="50" id="1hh-Ra-6oa"/>
@@ -30,14 +33,15 @@
                     </constraints>
                 </view>
             </subviews>
-            <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="calibratedWhite"/>
+            <color key="backgroundColor" red="0.0" green="0.0" blue="0.0" alpha="0.0" colorSpace="custom" customColorSpace="sRGB"/>
             <constraints>
                 <constraint firstAttribute="centerY" secondItem="19J-d9-rcw" secondAttribute="centerY" id="DlX-dJ-y4A"/>
                 <constraint firstAttribute="centerX" secondItem="19J-d9-rcw" secondAttribute="centerX" id="iTf-dQ-2Ho"/>
             </constraints>
             <connections>
                 <outlet property="indicatorView" destination="19J-d9-rcw" id="WZZ-6H-whz"/>
             </connections>
+            <point key="canvasLocation" x="92" y="18"/>
         </view>
     </objects>
     <resources>