Adding AdListener

import ...

public class ToastAdListener extends AdListener {
	private Context mContext;
	private String mErrorReason;

	public ToastAdListener(Context context) { this.mContext = context; }

	@Override
	public void onAdLoaded(){
		Toast.makeText(mContext,
			"onAdLoaded()",
			Toast.LENGTH_SHORT).show();
	}

	@Override
	public void onAdOpened(){
		Toast.makeText(mContext,
			"onAdOpened()",
			Toast.LENGTH_SHORT).show();
	}
}