Sending a android.content.Context parameter to a function with JNI
- by Ef Es
I am trying to create a method that checks for internet connection that needs a Context parameter. The JNIHelper allows me to call static functions with parameters, but I don't know how to "retrieve" Cocos2d-x Activity class to use it as a parameter.
public static boolean isNetworkAvailable(Context context) {
boolean haveConnectedWifi = false;
boolean haveConnectedMobile = false;
ConnectivityManager cm =
(ConnectivityManager) context.getSystemService(
Context.CONNECTIVITY_SERVICE);
NetworkInfo[] netInfo = cm.getAllNetworkInfo();
for (NetworkInfo ni : netInfo) {
if (ni.getTypeName().equalsIgnoreCase("WIFI"))
if (ni.isConnected())
haveConnectedWifi = true;
if (ni.getTypeName().equalsIgnoreCase("MOBILE"))
if (ni.isConnected())
haveConnectedMobile = true;
}
return haveConnectedWifi || haveConnectedMobile;
}
and the c++ code is
JniMethodInfo methodInfo;
if ( !JniHelper::getStaticMethodInfo( methodInfo,
"my/app/TestApp", "isNetworkAvailable", "(android/content/Context;)V")) {
//error
return;
}
CCLog( "Method found and loaded!");
methodInfo.env->CallStaticVoidMethod( methodInfo.classID,
methodInfo.methodID);
methodInfo.env->DeleteLocalRef( methodInfo.classID);
