try below code :include jtds lib in android project.
try {
String driver = "net.sourceforge.jtds.jdbc.Driver";
Class.forName(driver).newInstance();
connectionString = "jdbc:jtds:sqlserver://databaseip:port/databasename;encrypt=fasle;user=username;password=password;
System.out.println("temp is : "
+ System.getProperty("java.io.tmpdir"));
connection = DriverManager.getConnection(connectionString,
username, password);
stmt = connection.createStatement();
return;
} catch (ClassNotFoundException e) {
errorMassage = e.getMessage();
System.out.println("Could not find the database driver "
+ e.getMessage());
e.printStackTrace();
} catch (SQLException e) {
System.out.println("Could not retrieve database metadata "
+ e.getMessage());
errorMassage = e.getMessage();
e.printStackTrace();
} catch (IllegalAccessException e) {
errorMassage = e.getMessage();
e.printStackTrace();
} catch (InstantiationException e) {
errorMassage = e.getMessage();
e.printStackTrace();
}