SDL 2.0 C++ NDK Communication with Java Andriod Bugs

SDL Development
1

I’ve got this setup and working with a help of a friend. It works 95% of the time.

But at times, Ads don’t disappear when they are supposed to disappear. Like it loss’s Sync. I’m not sure what the bug might be.

//C++ SIDE

#include “SDL.h”
#include <jni.h>
#include “ads.h”

ads::ads()
{
bAds = false;
}

void ads::callJava(const char* methodName) const {

// retrieve the JNI environment.
JNIEnv* env = (JNIEnv*) SDL_AndroidGetJNIEnv();

// retrieve the Java instance of the SDLActivity
jobject activity = (jobject) SDL_AndroidGetActivity();

// find the Java class of the activity. It should be SDLActivity or a subclass of it.
jclass clazz(env->GetObjectClass(activity));

// find the identifier of the method to call
jmethodID method_id = env->GetMethodID(clazz, methodName, "()V");

// effectively call the Java method
env->CallVoidMethod(activity, method_id);

// clean up the local references.
env->DeleteLocalRef(activity);
env->DeleteLocalRef(clazz);

// Warning (and discussion of implementation details of SDL for Android):
// Local references are automatically deleted if a native function called
// from Java side returns. For SDL this native function is main() itself.
// Therefore references need to be manually deleted because otherwise the
// references will first be cleaned if main() returns (application exit).

}

void ads::showAds()
{
if (bAds == false)
{
callJava(“showAds”);
bAds = true;
}
}

void ads::hideAds()
{
if (bAds == true)
{
callJava(“hideAds”);
bAds = false;
}
}

////////JAVA SIDE

public void showAds() {
// Log.d(“TIM”, “showAds() called.”);

	if (adView == null) {
		final FrameLayout root = (FrameLayout) findViewById(R.id.realRoot);
		root.post(new Runnable() {
			public void run() {
				Log.i("TIM", "showAds().");
				reallyShowAds(root);
			}
		});
	}
	// Log.d("TIM", "showAds() done.");
	 
}

private void reallyShowAds(final FrameLayout root) 
{
	
	
	if (adView == null) 
	{
		adView = new AdView(SDLActivity.this);
		//adView.setVisibility(View.VISIBLE);
		adView.setAdSize(AdSize.BANNER);
		adView.setAdUnitId("ca-app-pub-3940256099942544/6300978111"); // test ad code

		AdRequest adRequest = new AdRequest.Builder().build();
		
		FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(
				LayoutParams.WRAP_CONTENT,
				50,
				Gravity.TOP | Gravity.CENTER);
		adView.setLayoutParams(lp);
		root.addView(adView, lp);
		adView.loadAd(adRequest);
		
	}
		
}

public void hideAds() 
{
	// Log.d("TIM", "hideAds() called.");
	if (adView != null) 
	{
		//adView.pause();
		final FrameLayout root = (FrameLayout) findViewById(R.id.realRoot);
		root.post(new Runnable()
		{
			public void run() 
			{
				Log.i("TIM", "hideAds().");
	    		reallyHideAds();
			}
		}); // });
	}
	// Log.d("TIM", "hideAds() done.");
}

private void reallyHideAds() 
{
	
	if (adView != null) 
	{
		//adView.setVisibility(View.GONE);
		//adView.setVisibility(View.INVISIBLE);
		adView.destroy();
		adView = null;
	}
	
}