Connect Android To Hana Database - android-studio

Question

I am trying to connect my android program to Hana database using jdbc driver.
It was running well when try to connect to SQL database server. But I when try to connect to Hana database, it cannot be connected.
I have added jdbc in my library, and also added some permission in android. But it does not work. The database could be connected.
Here's java code the I used.
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
private static String ip = "172.10.x.x";
private static String port = "xxxx";
private static String Classes = "com.sap.db.jdbc.Driver";
private static String db = "DBTEST";
private static String usr = "databaseuser";
private static String pass = "databasepassword";
private static String url = "jdbc:sap://"+ip+":"+port+"/?databaseName="+db+"&user="+usr+"&password="+pass+";";
private Connection connection = null;
public void connectButtonClick(View v){initializeMainComponents();}
public void initializeMainComponents()
{
try {
Class.forName(Classes);
DriverManager.setLoginTimeout(5);
connection = DriverManager.getConnection(url, usr,pass);
Toast.makeText(getApplicationContext(), "Database connected", Toast.LENGTH_LONG).show();
}
catch(ClassNotFoundException e){
e.printStackTrace();
Toast.makeText(getApplicationContext(), "Database connection error", Toast.LENGTH_LONG).show();
}
catch(SQLException e){
e.printStackTrace();
Toast.makeText(getApplicationContext(), "Database connection failure", Toast.LENGTH_LONG).show();
}
}