return whether ace is supported or not

src/android/host/NativeHost.java

@@ -176,11 +176,11 @@ public class NativeHost extends CordovaPlugin {
             // Do an Android version check
             //
             if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.KITKAT) {
-                callbackContext.error("Unable to initialize the Ace plugin: Android version " + 
-                    android.os.Build.VERSION.RELEASE + 
+                callbackContext.error("Unable to initialize the Ace plugin: Android version " +
+                    android.os.Build.VERSION.RELEASE +
                     " is not yet supported. Marshmallow (6.0) or later is recommended, " +
                     " although KitKat (4.4) or later will also work.");
-                return true;            
+                return true;
             }
                         
 			OutgoingMessages.setCallbackContext(callbackContext);
@@ -205,6 +205,10 @@ public class NativeHost extends CordovaPlugin {
 		else if (action.equals("setPopupsCloseOnHtmlNavigation")) {
 			this.setPopupsCloseOnHtmlNavigation(args.getBoolean(0), callbackContext);
 		}
+		else if (action.equals("isSupported")) {
+			boolean supported = android.os.Build.VERSION.SDK_INT > android.os.Build.VERSION_CODES.KITKAT;
+			callbackContext.success(supported);
+		}
 		else {
 			return false;
 		}

src/ios/NativeHost.mm

@@ -282,6 +282,13 @@ BOOL _initialized;
     }
 }
 
+// Returns if there is support for ace plugin
+- (void)isSupported:(CDVInvokedUrlCommand*)command {
+    BOOL isSupported = true;
+    CDVPluginResult* r = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK messageAsBool:isSupported];
+    [self.commandDelegate sendPluginResult:r callbackId:command.callbackId];
+}
+
 - (void) sendOutgoingMessage:(NSArray*)data {
 	CDVPluginResult* pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK messageAsArray:data];
 	[pluginResult setKeepCallbackAsBool:YES];

www/ToNative.js

@@ -291,6 +291,10 @@ ToNative.getAndroidId = function (name, onSuccess, onError) {
     exec(onSuccess, onError, "NativeHost", "getAndroidId", [name]);
 };
 
+ToNative.isSupported = function (onSuccess, onError) {
+    exec(onSuccess, onError, "NativeHost", "isSupported", []);
+};
+
 ToNative.navigate = function (root, onSuccess, onError) {
     exec(onSuccess, onError, "NativeHost", "navigate", [root.handle]);
 };

www/ace.js

@@ -42,6 +42,10 @@ module.exports = {
         return platformValues[ace.platform.toLowerCase()];
     },
 
+    isSupported: function (onSuccess, onError) {
+        return ace.ToNative.isSupported(onSuccess, onError);
+    },
+
     navigate: function (urlOrUIElement, onNavigated, onNavigatingAway, onError) {
         if (_oldNavigatingAwayHandler) {
             _oldNavigatingAwayHandler(_oldRoot);