我的 Android 应用程序无法连接到我的 SQL Server

我正在制作一个用户日志应用程序，在执行模拟器时我可以注册用户，验证用户在我的数据库中的库存，但是当我在手机上执行应用程序时，它没有连接到我的数据库。

这是我到数据库的连接代码：

public class ConnectionDB extends AppCompatActivity {

Connection connection;
    private static String ip = "192.168.1.9";  //"192.168.33.1";
    private static String port = "1433";
    private static String classs = "net.sourceforge.jtds.jdbc.Driver";
    private static String db = "PHOTOGO";
    private static String user = "mizrahijulio";
    private static String password = "julio1207";

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        }

    //Connection method
    public Connection connectBD(){
         connection=null;
        try {
            //Acces Permition to DB
            StrictMode.ThreadPolicy policicy=new StrictMode.ThreadPolicy.Builder().permitAll().build();
            StrictMode.setThreadPolicy(policicy);

            Class.forName(classs).newInstance();
            connection= DriverManager.getConnection("jdbc:jtds:sqlserver://"+ip+":"+port+";databaseName="+db+";user="+user+";password="+password+";instance=SQLEXPRESS;");


        }catch(SQLException sq){
            Toast.makeText(getApplicationContext(),sq.getMessage(),Toast.LENGTH_SHORT).show();
        }
        catch (ClassNotFoundException cfe){
            Toast.makeText(getApplicationContext(),cfe.getMessage(),Toast.LENGTH_SHORT).show();
        }
        catch (Exception e){
            Toast.makeText(getApplicationContext(),e.getMessage(),Toast.LENGTH_SHORT).show();
        }

        return connection;
    }

    public Connection CloseConnection() throws SQLException {
try{
        if(connection!=null){
             connection.close();}
}
        catch(SQLException sq){
            Toast.makeText(getApplicationContext(),sq.getMessage(),Toast.LENGTH_SHORT).show();
        }
        return connection;
}