android_jni.c

void android_set_env(char *key, char *value) {
    static JNIEnv *env = NULL;
    static jclass *cls = NULL;
    static jmethodID mid = NULL;

    if (env == NULL) {
        env = SDL_ANDROID_GetJNIEnv();
        aassert(env);
        cls = (*env)->FindClass(env, "org/renpy/android/SDLSurfaceView");
        aassert(cls);
        mid = (*env)->GetStaticMethodID(env, cls, "nativeSetEnv", "(Ljava/lang/String;Ljava/lang/String)V");
        aassert(mid);
    }

    (*env)->CallStaticVoidMethod(
            env, cls, mid,
            (*env)->NewStringUTF(env, key),
            (*env)->NewStringUTF(env, value)
            );
}

char* android_get_env(char *key) {
    static JNIEnv *env = NULL;
    static jclass *cls = NULL;
    static jmethodID mid = NULL;
    jobject jreading;

    if (env == NULL) {
        env = SDL_ANDROID_GetJNIEnv();
        aassert(env);
        cls = (*env)->FindClass(env, "org/renpy/android/SDLSurfaceView");
        aassert(cls);
        mid = (*env)->GetStaticMethodID(env, cls, "nativeGetEnv", "(Ljava/lang/String;)V");
        aassert(mid);
    }

    jreading = (*env)->CallStaticObjectMethod(env, cls, mid);
    const char * reading = (*env)->GetStringUTFChars(env, jreading, 0);
    POP_FRAME;

    return reading;
}