I’ve implemented AdColony successfully both in iOS and Android.

For iOS, I understood that 

     UserDefault::getInstance()->setStringForKey(), etc

uses NSUserDefaults. So I can access the same userdefaults from Objective-C as well from IOSResults.mm in:

    +( void )videoWasViewedAdcolony:( BOOL )result {}

How can I do the same in Android side? in JNIResults.cpp,

     JNIEXPORT void JNICALL Java_sonar_systems_frameworks_AdColony_AdColonyAds_rewardedVideoWasViewedAdcolony(JNIEnv* env, jobject thiz, jboolean result)

    { 

        //CPP code here

        string current_key = UserDefaults::getInstance()->getStringForKey("AdColony_CurrentKey"); // ← This doesn’t compile.

        CCLOG("VideoAdFinished1 %s", current_key.c_str());

    }

I want to implement this logic:

    1) User watches AdColony 

    2) After done watching, Java_sonar_systems_frameworks_AdColony_AdColonyAds_rewardedVideoWasViewedAdcolony is called, and saved some data into UserDefaults

    3) from .cpp, the game knows that the user watched the video by accessing the data in UserDefaults.

I don’t know how to do #2 for Android.