import android.os.Bundle;
import android.os.Handler;
import android.os.SystemClock;
-import android.support.v7.app.AppCompatActivity;
+//import android.support.v7.app.AppCompatActivity;
+import android.app.Activity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import java.net.InetAddress;
//public class MainActivity extends Activity
-public class MainActivity extends AppCompatActivity
+public class MainActivity extends Activity
implements OnClickListener {
String ip_addr;
int sport, dport;