Integration with Ionic framework

Okay– I have a better answer for you.

I successfully integrated Ionic/Cordova with Unity natively.

Basically, I followed the steps at these tutorials to get started:

iOS https://the-nerd.be/2015/11/13/integrate-unity-5-in-a-native-ios-app-with-xcode-7/

Android https://nevzatarman.com/2015/01/04/unity-android-tutorial-opening-unity-scene-from-an-activity/

I pretty much followed these to a T, but ins$$anonymous$$d of building to a blank native app, I added this all to the Ionic app. So where a blank file may have been used I ins$$anonymous$$d modified the existing Ionic project files where it made sense (i.e. AppDelegate.h)

The part that was a little trickier was getting back from Unity.

Here's my C Sharp script:

 using UnityEngine;
 using System.Collections;
 using System.Runtime.InteropServices;
 
 public class HideUnity : $$anonymous$$onoBehaviour {
 
     [DllImport ("__Internal")]
     private static extern bool uHideUnity ();
 
 
     public void hide(){
         #if UNITY_IOS 
         if (uHideUnity () == true) {
             Debug.Log ("Successfully returned data from external plugin");
         }
     #endif
 
     #if UNITY_ANDROID
     Application.Quit();
     #endif
 
     }
 
 }
 

On Android, you need to add this to your manifest xml file:

  android:process=":Unity$$anonymous$$ills$$anonymous$$e"

So your "GameActivity" (if you followed the above tutorial) will have this entry for the activity

         <activity
             android:name="<your_package_name>.GameActivity"
             android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orientation|screenLayout|ui$$anonymous$$ode|screenSize|smallestScreenSize|fontScale"
             android:label="@string/app_name"
             android:launch$$anonymous$$ode="singleTask"
             android:process=":Unity$$anonymous$$ills$$anonymous$$e">>
         </activity>

That way, when you quit the Unity application, it will close the process but not kill your Ionic app.

For iOS, you'll need to add a mm file to your Plugins>iOS directory in Unity. Here's the code for that:

 #import <Foundation/Foundation.h>
 #import "AppDelegate.h"
 
 @interface $$anonymous$$yUnityPlugin:NSObject
 /* method declaration */
 + (BOOL)hideUnityWindow;
 @end
 
 @implementation $$anonymous$$yUnityPlugin
 
 + (BOOL)hideUnityWindow {
 
     AppDelegate *appDel = (AppDelegate *)[[UIApplication sharedApplication] delegate];
     [appDel hideUnityWindow];
     
     return true;
 }
 @end
 
 extern "C"
 {
     bool uHideUnity(){
         return [$$anonymous$$yUnityPlugin hideUnityWindow]; 
     }
     
 }

Finally, I've created a Cordova plugin that will let you do the actual calls to native code:

https://github.com/shawticus/cordova2unity

(The iOS files for the modified AppDelegate and UnityAppController are in there, too. You should still follow the tutorials linked to above!!!!!)

I know it's a little late in co$$anonymous$$g, but here's the definitive guide on how to do this. Let me know if it works for you. Or doesn't.

https://docs.google.com/document/d/1V8eh5Gh2O0fNc4gOvqdpLOwO9VvRrR0dP8EN2YAcb88/edit