SQL Server Connection

Question

I’m trying to make direct connection to SQL Server, for testing, but at the time of testing "Register" by clicking the button, the app simply hangs, there’s something wrong in the code?

package br.com.agemstar.testesql;

import android.os.StrictMode;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Connection;
import java.sql.Statement;

public class MainActivity extends AppCompatActivity {

EditText edtnome, edtend;
Button carregar;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

  edtnome = (EditText)findViewById(R.id.edtNome);
    edtend = (EditText)findViewById(R.id.edtEnd);
    carregar = (Button) findViewById(R.id.btnN1);

    carregar.setOnClickListener(new View.OnClickListener(){
        @Override
        public void onClick(View v){
            cadastrarUsuario();
        }
    });
}

public Connection conexaoBD(){
    Connection connection = null;
    try{
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
        Class.forName("net.sourceforge.jtds.jdbc.Driver").newInstance();
        connection = DriverManager.getConnection("jdbc:jtds:sqlserver://192.168.0.169;databaseName=ANDROID_SQL;user=sa;password=@dm1n102030;");
    }catch (Exception e){
        Toast.makeText(getApplicationContext(),e.getMessage(),Toast.LENGTH_SHORT).show();
    }
    return connection;
}

public void cadastrarUsuario(){
    try{
        PreparedStatement pst = conexaoBD().prepareStatement("insert into usuarios values (?,?)");
        pst.setString(1,edtnome.getText().toString());
        pst.setString(2,edtend.getText().toString());
        pst.executeUpdate();
        Toast.makeText(getApplicationContext(),"REGISTRO CONCLUIDO",Toast.LENGTH_SHORT).show();

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