Thanks all the people who gave me suggestions or left comments: these are all precious information always considered by me. I tried to improve the application adding new features and fixing misbehaviours. But the work goes ahead... :) Briscola is the first application I developed for Android and I'm not an expert yet: if you experience any trouble assure to have the app upgraded to the last release available on the market and then feel free to leave a feedback here. I'll be thankyou!
For someone who wrote that the app sometimes is slow replying to the tap event on the player cards, I can say now that I worked a lot around source of the problem and now it works better if even these kinds of trouble in general may depends on what's running or what's doing the device on a particular moment. Update the app and let me know! Cheers!