Upgrade with cocos2d-1.0.1-x-0.12.0 and integrated with your original JNI functions...

Here are some notes that when I upgraded my game to .12 version what I learned about with new JNI architecture that cocos2d-x used.

Question 1：In the jni\helloworld\main.cpp, you can find there is already JNI_Onload() there. Yes, that means you can't implement your JNI_Onload.

Solution：You can call RegisterNatives() at JNI_Onload() which at main.cpp instead to register your jni class.

Something like the code below :

jclass clazz;
JNIEnv *env;
vm->GetEnv((void**) &env, JNI_VERSION_1_6);
const char *classPathName = "com/zhihmeng/ChickenEggsX/ChickenEggsX";
JNINativeMethod methods[] = {
{"init", "(Ljava/lang/Object;)V",
(void *)Java_com_zhihmeng_ChickenEggsX_ChickenEggsX_init},
};
clazz = env->FindClass(classPathName);
if (clazz == NULL) {
// LOGE("Native registration unable to find class '%s'", className);
return JNI_FALSE;
}
if (env->RegisterNatives(clazz, methods, sizeof(methods) / sizeof(methods[0])) < 0) { // LOGE("RegisterNatives failed for '%s'", className); return JNI_FALSE; } Question 2：You may do some modifications on your JNI class, and JniHelper make these thing easier. Solution：Use JniHelper to get some static method info like MessageJni.cpp(located at cocos2dx\platform\android\jni) does and call your method by it. The code will like below： JniMethodInfo t; if (JniHelper::getStaticMethodInfo(t , "com/zhihmeng/ChickenEggsX/ChickenEggsX" , "exportToShare" , "()V")) { t.env->CallStaticVoidMethod(t.classID, t.methodID);
}

Finally, thanks the tweaks of cocos2d-x new JniHelper, it make jni calling more elegant.

You are also welcome to my studio page to see some of my works : www.molioapp.com