Er det muligt at forbinde min Android-app til mysql-database uden PHP.?

Yes, You can.

Du skal tilføje et jar-bibliotek til mysql. Derefter java-kode, der vil oprette forbindelse til mysql-serveren.

import java.sql.DriverManager;

import android.database.SQLException;

import com.mysql.jdbc.Connection;
import com.mysql.jdbc.ResultSet;
import com.mysql.jdbc.Statement;


    public class SQLConnection {
        public static Connection conn = null;
        static void setConnection(String user,String pass,String urlServer,String dBase){   


              try
              {
                  String userName = user;
                  String password = pass;
                  String url = "jdbc:mysql://"+urlServer+"/"+dBase;

                  Class.forName ("com.mysql.jdbc.Driver").newInstance ();
                  conn = DriverManager.getConnection (url, userName, password);
                  System.out.println ("Database connection established");
              }
              catch (Exception e)
              {
                  System.err.println (e.getMessage());
              }
              finally
              {
              }


        }
        public static Connection getConnection(){
        return conn;
        }

    }