Multiple Plugins on Android

Hi,

I have exactly the same problem. I have 2 android plugins, Vuforia and my plugin, but only one activity can be the "currentActivity" of Unity:

AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer") ; AndroidJavaObject jo = jc.GetStatic("currentActivity") ;

-> In the manifest, if the activity declared as "android.intent.action.MAIN" is the Vuforia one then I cannot launch my activities, and vice versa, if my root activity is the MAIN, then Vuforia cannot be launched.

I wonder how 2 main activities can co-exist or how to launch two activities from different packages.

My guess is to have only one entry point in the manifest (i.e my plugin's main activity) and then make a method (in my main activity obtained by "currentActivity") to either launch my own activities or the Qualcomm main activity (via intent). It means the at lest one plugin has to be recompiled (and mine would be easier than the Qualcomm one).

Does anyone have found a other solution?

You can add your compass activities along with the Qualcomm's one:

In the manifest :

 [...]
 <activity 
 android:name="com.qualcomm.QCARUnityPlayer.QCARPlayerActivity" 
 android:label="@string/app_name" 
 android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen">
 
 </activity>
 <activity android:name="com.qualcomm.QCARUnityPlayer.QCARPlayerNativeActivity"
 android:label="@string/app_name"
 android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen">
 </activity>
 
 <!- And here declare your activities with their own packages -->
 <activity android:name="com.your.package.RootActivity"
 android:label="@string/app_name">
 </activity>
 
 [...]

And then if you want to launch them (since the MAIN activity is the Qualcomm's one) you have to grab the current activity and launch statically your activity from it as described here :

http://forum.unity3d.com/threads/149089-Android-Plugin.-multiple-Android-Activity-problems.?p=1059268#post1059268

Hope it helps

I think for those who wants to use Vuforia and their plugins in the same custom activity this article is really useful. It explains how to extend Vuforia QCARPlayerNativeActivity.

https://developer.vuforia.com/forum/faq/unity-how-can-i-extend-unitys-android-activity

Hope this is useful to somebody