Jni从c ++调用java函数

Question

这个google函数会在cclayers上调用，例如暂停等视图名称  analyticsInterface.cpp

void analyticsInterface::google (std::string x){
JniMethodInfo t;

if (JniHelper::getMethodInfo(t,
 "com.pathto.MainActivity",
 "ganalyiticscall",
 "(Ljava/lang/String;I;)V;")) {

   char* myName = "root view";
  int times = 3;

 jstring stringArg1 = t.env->NewStringUTF(myName);
 t.env->CallVoidMethod(t.classID,
     t.methodID,
   stringArg1);

 t.env->DeleteLocalRef(t.classID);
 t.env->DeleteLocalRef(stringArg1);
}}

尝试通过cpp调用此函数，因为主要活动并不知道哪个图层处于活动状态。

mainacivity.java

public void ganalyiticscall(String ScreenName){
    GoogleAnalytics mGaInstance = GoogleAnalytics.getInstance(this);
    Tracker t = mGaInstance.newTracker("UA-xxxxx-1");
    Log.i("call from ganal","tracker made");
        // Set screen name.
    t.setScreenName(ScreenName);

    // Send a screen view.
    t.send(new HitBuilders.ScreenViewBuilder().build());
}