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I want to write a native android library that can access shader and texture files from the res/raw folder of my application (or rather res/assets?) without being dependent of a specific activity object.

I want to avoid code like

Java_com_namespace_MyActivity_initAssetsManager(JNIEnv* env,  jobject obj) {
    AAssetManager* g_assetManager = nullptr;
    g_assetManager = AAssetManager_fromJava(env, obj);
    //log whatever operation ssucceeded or not.
}

Not sure if the way to do it is to #include <android_native_app_glue.h> in my source.cpp. The compiler don't recognize this header. I have to somehow add the android_native_app_glue lib to my cmakelists. I couldn't find an explanation how to do this. Google comes up only with examples using Android.mk.

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  • You need an Activity reference in order to get at its assets. From a library perspective, you could ask the calling code to pass you an instance you can use. Alternatively you could say you want a reference to a GameActivity, which bundles a few commonly-used pointers. Commented May 12 at 11:22
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