added support for ios9, prepared supporting ios8

Author: xtools-at

ios-pwa-wrapper.xcodeproj/project.pbxproj

@@ -436,12 +436,15 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				CODE_SIGN_STYLE = Automatic;
 				DEVELOPMENT_TEAM = 86W9Q5SP7G;
 				INFOPLIST_FILE = "ios-pwa-wrapper/Info.plist";
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "at.xtools.ios-pwa-wrapper";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				PROVISIONING_PROFILE_SPECIFIER = "";
 				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
@@ -451,12 +454,15 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				CODE_SIGN_STYLE = Automatic;
 				DEVELOPMENT_TEAM = 86W9Q5SP7G;
 				INFOPLIST_FILE = "ios-pwa-wrapper/Info.plist";
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "at.xtools.ios-pwa-wrapper";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				PROVISIONING_PROFILE_SPECIFIER = "";
 				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};

ios-pwa-wrapper/AppDelegate.swift

@@ -21,8 +21,10 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         // Change Navigation style
         UINavigationBar.appearance().barTintColor = navigationBarColor
         UINavigationBar.appearance().titleTextAttributes = [NSAttributedStringKey.foregroundColor: navigationTitleColor]
-        UINavigationBar.appearance().largeTitleTextAttributes = [NSAttributedStringKey.foregroundColor: navigationTitleColor]
         UIBarButtonItem.appearance().tintColor = navigationButtonColor
+        if #available(iOS 11.0, *) {
+            UINavigationBar.appearance().largeTitleTextAttributes = [NSAttributedStringKey.foregroundColor: navigationTitleColor]
+        }
 
         return true
     }

ios-pwa-wrapper/ViewController.swift

@@ -77,24 +77,29 @@ class ViewController: UIViewController {
 
         // settings
         webView.allowsBackForwardNavigationGestures = true
-        webView.configuration.ignoresViewportScaleLimits = false
         webView.configuration.preferences.javaScriptEnabled = true
-        // user agent
-        if (useCustomUserAgent) {
-            webView.customUserAgent = customUserAgent
+        if #available(iOS 10.0, *) {
+            webView.configuration.ignoresViewportScaleLimits = false
         }
-        if (useUserAgentPostfix) {
+        // user agent
+        if #available(iOS 9.0, *) {
             if (useCustomUserAgent) {
-                webView.customUserAgent = customUserAgent + " " + userAgentPostfix
-            } else {
-                webView.evaluateJavaScript("navigator.userAgent", completionHandler: { (result, error) in
-                    if let resultObject = result {
-                        self.webView.customUserAgent = (String(describing: resultObject) + " " + userAgentPostfix)
-                    }
-                })
+                webView.customUserAgent = customUserAgent
             }
+            if (useUserAgentPostfix) {
+                if (useCustomUserAgent) {
+                    webView.customUserAgent = customUserAgent + " " + userAgentPostfix
+                } else {
+                    webView.evaluateJavaScript("navigator.userAgent", completionHandler: { (result, error) in
+                        if let resultObject = result {
+                            self.webView.customUserAgent = (String(describing: resultObject) + " " + userAgentPostfix)
+                        }
+                    })
+                }
+            }
+            webView.configuration.applicationNameForUserAgent = ""
         }
-        webView.configuration.applicationNameForUserAgent = ""
+        
 
         // init observers
         webView.addObserver(self, forKeyPath: #keyPath(WKWebView.isLoading), options: NSKeyValueObservingOptions.new, context: nil)
@@ -121,7 +126,9 @@ class ViewController: UIViewController {
         // setup navigation
         navigationItem.title = appTitle
         if (forceLargeTitle) {
-            navigationItem.largeTitleDisplayMode = UINavigationItem.LargeTitleDisplayMode.always
+            if #available(iOS 11.0, *) {
+                navigationItem.largeTitleDisplayMode = UINavigationItem.LargeTitleDisplayMode.always
+            }
         }
         if (useLightStatusBarStyle) {
             self.navigationController?.navigationBar.barStyle = UIBarStyle.black
@@ -191,7 +198,12 @@ extension ViewController: WKUIDelegate {
                 } else {
                     decisionHandler(.cancel)
                     if (UIApplication.shared.canOpenURL(requestUrl)) {
-                        UIApplication.shared.open(requestUrl)
+                        if #available(iOS 10.0, *) {
+                            UIApplication.shared.open(requestUrl)
+                        } else {
+                            // Fallback on earlier versions
+                            UIApplication.shared.openURL(requestUrl)
+                        }
                     }
                 }
             } else {