Fix for iOS 11.3

Added fix for iOS 11.3, tested from iOS 10 to 11.3

Author: hirbod

src/ios/CDVWKWebViewEngine+InputFocusFix.m

@@ -1,4 +1,5 @@
 #import "CDVWKWebViewEngine+InputFocusFix.h"
+#import <objc/runtime.h>
 
 @implementation CDVWKWebViewEngine (InputFocusFix)
 + (void) load {
@@ -18,13 +19,25 @@ - (void) swizzleWKContentViewForInputFocus {
 
 // https://github.com/Telerik-Verified-Plugins/WKWebView/commit/04e8296adeb61f289f9c698045c19b62d080c7e3
 - (void) keyboardDisplayDoesNotRequireUserAction {
-    SEL sel = sel_getUid("_startAssistingNode:userIsInteracting:blurPreviousNode:userObject:");
-    Class WKContentView = NSClassFromString(@"WKContentView");
-    Method method = class_getInstanceMethod(WKContentView, sel);
-    IMP originalImp = method_getImplementation(method);
-    IMP imp = imp_implementationWithBlock(^void(id me, void* arg0, BOOL arg1, BOOL arg2, id arg3) {
-        ((void (*)(id, SEL, void*, BOOL, BOOL, id))originalImp)(me, sel, arg0, TRUE, arg2, arg3);
-    });
-    method_setImplementation(method, imp);
+    Class class = NSClassFromString(@"WKContentView");
+    NSOperatingSystemVersion iOS_11_3_0 = (NSOperatingSystemVersion){11, 3, 0};
+
+    if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion: iOS_11_3_0]) {
+        SEL selector = sel_getUid("_startAssistingNode:userIsInteracting:blurPreviousNode:changingActivityState:userObject:");
+        Method method = class_getInstanceMethod(class, selector);
+        IMP original = method_getImplementation(method);
+        IMP override = imp_implementationWithBlock(^void(id me, void* arg0, BOOL arg1, BOOL arg2, BOOL arg3, id arg4) {
+            ((void (*)(id, SEL, void*, BOOL, BOOL, BOOL, id))original)(me, selector, arg0, TRUE, arg2, arg3, arg4);
+        });
+        method_setImplementation(method, override);
+    } else {
+        SEL selector = sel_getUid("_startAssistingNode:userIsInteracting:blurPreviousNode:userObject:");
+        Method method = class_getInstanceMethod(class, selector);
+        IMP original = method_getImplementation(method);
+        IMP override = imp_implementationWithBlock(^void(id me, void* arg0, BOOL arg1, BOOL arg2, id arg3) {
+            ((void (*)(id, SEL, void*, BOOL, BOOL, id))original)(me, selector, arg0, TRUE, arg2, arg3);
+        });
+        method_setImplementation(method, override);
+    }
 }
-@end
+@end