1.1 --- a/src/android/amain.c	Mon Oct 05 06:11:54 2015 +0300
     1.2 +++ b/src/android/amain.c	Mon Oct 05 17:15:02 2015 +0300
     1.3 @@ -2,6 +2,7 @@
     1.4  #include <stdlib.h>
     1.5  #include <assert.h>
     1.6  #include <EGL/egl.h>
     1.7 +#include <jni.h>
     1.8  #include "android_native_app_glue.h"
     1.9  #include <android/window.h>
    1.10  #include <android/sensor.h>
    1.11 @@ -25,6 +26,10 @@
    1.12  static int width, height;
    1.13  static int init_done;
    1.14  
    1.15 +static JavaVM *jvm;
    1.16 +static JNIEnv *jni;
    1.17 +static jclass activity_class;
    1.18 +
    1.19  void android_main(struct android_app *app_ptr)
    1.20  {
    1.21  	app_dummy();
    1.22 @@ -37,6 +42,13 @@
    1.23  
    1.24  	start_logger();
    1.25  
    1.26 +	jvm = app->activity->vm;
    1.27 +	if((*jvm)->AttachCurrentThread(jvm, &jni, 0) != 0) {
    1.28 +		fprintf(stderr, "failed to attach native thread to Java VM\n");
    1.29 +		exit(1);
    1.30 +	}
    1.31 +	activity_class = (*jni)->GetObjectClass(jni, app->activity->clazz);
    1.32 +
    1.33  	for(;;) {
    1.34  		int num_events;
    1.35  		struct android_poll_source *pollsrc;
    1.36 @@ -69,10 +81,26 @@
    1.37  /* TODO */
    1.38  void ad_banner_show(void)
    1.39  {
    1.40 +	jmethodID method;
    1.41 +	if(!jvm) return;
    1.42 +
    1.43 +	if(!(method = (*jni)->GetMethodID(jni, activity_class, "show_ad", "()V"))) {
    1.44 +		fprintf(stderr, "failed to retrieve MainActivity.show_ad method\n");
    1.45 +		return;
    1.46 +	}
    1.47 +	(*jni)->CallVoidMethod(jni, activity_class, method);
    1.48  }
    1.49  
    1.50  void ad_banner_hide(void)
    1.51  {
    1.52 +	jmethodID method;
    1.53 +	if(!jvm) return;
    1.54 +
    1.55 +	if(!(method = (*jni)->GetMethodID(jni, activity_class, "hide_ad", "()V"))) {
    1.56 +		fprintf(stderr, "failed to retrieve MainActivity.hide_ad method\n");
    1.57 +		return;
    1.58 +	}
    1.59 +	(*jni)->CallVoidMethod(jni, activity_class, method);
    1.60  }
    1.61  
    1.62  static void handle_command(struct android_app *app, int32_t cmd)