with Android TV

I used this library with Android tv Project but don't work.
the application close.

**## first create class App**
import android.app.Application;
import android.content.Context;

import com.danikula.videocache.HttpProxyCacheServer
public class App extends Application {

private HttpProxyCacheServer proxy;

public static HttpProxyCacheServer getProxy(Context context) {
App app = (App) context.getApplicationContext();
return app.proxy == null ? (app.proxy = app.newProxy()) : app.proxy;
}

private HttpProxyCacheServer newProxy() {
return new HttpProxyCacheServer(this);
}
}

**## and play class**
public class PlaybackOverlayActivity extends Activity implements CacheListener {
private VideoView mVideoView;
...
public void setVideoPath(String videoUrl) {
try {
HttpProxyCacheServer proxy = App.getProxy(this);
proxy.registerCacheListener(this, videoUrl);
String proxyUrl = proxy.getProxyUrl(videoUrl);
setPosition(0);
mVideoView.setVideoPath(proxyUrl);
mStartTimeMillis = 0;
mDuration = Utils.getDuration(proxyUrl);
} catch (Exception e) {
toast(e.toString());
}

}

# the Err is
java.lang.ClassCastException:Android.app.application cannot be cast to (package name).App

thinx