Consume WebService C # on android

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Consume WebService C # on android

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#1 by (2 votes)

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I have a Web Service created in C # where I access a certain method to authenticate a teacher, if the user data and password passed through parameters exist in the database the web service returns me the following data [CodProf], [name], [User], [Password].

I am able to pass these parameters through a login activity perfectly and all data is being returned.

The problem is that all code accessing the web service and returning this data is in the Activity class.

I would like to know if you have how I can structure my classes to stay more organized.

Example:

Teacher class: Where will contain all the teacher's get and set attributes and methods.
Class TeacherWs: Where will you receive the Activity parameters and communicate with the web service by returning an object of the type teacher.
Activity class responsible for capturing the typed data and passing it to ProfessorWs.

Code:

package feol.com.br.diarioescolar;

import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import org.xmlpull.v1.XmlPullParserException;

import java.io.IOException;

public class Login extends Activity {


    private Button btEntrar;
    private EditText edUsuario, edSenha;

    private ProgressDialog dialogo;
    String codigo;
    String nome;
    String usuario ;
    String senha ;


    private static String SOAP_ACTION ="http://feol/AutenticarProfessor";
    private static String NAMESPACE = "http://feol/";
    private static String METHOD_NAME= "AutenticarProfessor";
    private static String URL = "http://192.168.43.175/ServiceFeol.asmx?WSDL";


    Professor p = new Professor();
    ProfessorWs ws = new ProfessorWs();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);

        btEntrar = (Button)findViewById(R.id.btEntrar);
        edUsuario = (EditText)findViewById(R.id.edUsuario);
        edSenha = (EditText)findViewById(R.id.edSenha);

        btEntrar.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                btEntrarOnClick();

            }

        });


    }


    private void  btEntrarOnClick(){
        new asynProf().execute();

    }

    public Boolean invocaWs(){

        Boolean re = true;

        try{
             SoapObject resposta = new SoapObject(NAMESPACE,METHOD_NAME);
             SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
             envelope.dotNet = true;
             resposta.addProperty("user",edUsuario.getText().toString());
             resposta.addProperty("senha",edSenha.getText().toString());
             envelope.setOutputSoapObject(resposta);


             HttpTransportSE http = new HttpTransportSE(URL);
             http.call(SOAP_ACTION,envelope);

            String resultado = envelope.getResponse().toString();
            JSONArray jsonArray = new JSONArray(resultado);


            for(int i=0;i<jsonArray.length();i++ ) {
                JSONObject jsonObject =jsonArray.getJSONObject(i);

                codigo = jsonObject.getString("CodProf");
                nome = jsonObject.getString("Nome");
                usuario = jsonObject.getString("Usuario");
                senha = jsonObject.getJSONObject("Senha").toString();
            }

        } catch (IOException e){
            e.printStackTrace();
            re=false;
        }catch (XmlPullParserException e){
            e.printStackTrace();
            re=false;
        }catch (JSONException e){
            e.printStackTrace();
        }

        return re;

    }

    class asynProf extends AsyncTask<String,String,String> {


        @Override
        protected void onPreExecute(){

            dialogo = new ProgressDialog(Login.this);
            dialogo.setMessage("Carregando codigo...");
            dialogo.setIndeterminate(false);
            dialogo.setCancelable(false);
            dialogo.show();
        }

        @Override
        protected String doInBackground (String... strings){
            if (invocaWs())
            {return "ok";

            }else {return "erro";}

        }

        @Override
        protected void onPostExecute(String s){
            dialogo.dismiss();
            if(s.equals("ok")){
                mostraCod();
            }else {
                Log.e("Script","DeuErrado" + s.toString());}

        }
    }



    public void mostraCod(){
            Toast t = Toast.makeText(getBaseContext(),"Código pro: " +nome, Toast.LENGTH_SHORT);
            t.show();

        }


}

java android

asked by anonymous 30.08.2016 / 04:04

1 answer

How to split a sprintf string into multiple lines in C? JQuery, initializing with function

score 2 · Answer 1

Come on, first you need to define the responsibilities of your program. Clearly this activity has many responsibilities, so to structure it best I suggest you follow the following architecture:

LoginActivity: Only initializes view components and registers listeners.

LoginOnClickListener: Handles the OnClick event by calling methods that perform business logic through a facade.

SOAPController: Facade for business methods that handle SOAP services.

GenericSOAP: Abstract implementation or interface of a SOAP that defines the format of your SOAP classes.

LogonSOAP: Calls the logon service

JSONObject: Converts JSONObject data to users

User: Encapsulates a user's data: code, name, user, and password

AsyncTask: Implements the asynchronous task call. Remember that class names should begin with the first capital letter. ^

Then, it would look more or less like this:

class LoginActivity {
    + onCreate
    + mostrarCod
    + carregarComponentes
    + carregarListeners
}

class LoginOnClickListener {
    + btEntrarOnClick
}

class SOAPController {
    + logar
}

interface GenericSOAP {
    + invocarWS
}

class LogonSOAP {
    + invocarWS
}

class UsuarioJSONObject {
    + converterJSONObjectParaUsuario
}

// É um POJO
class Usuario {
}

class AsyncTask {
    // Contrutor precisa receber a activity para iniciar a Dialog.
    // É importante iniciar a Dialog em uma thread separada (runOnUiThread).
    + AsyncTask (Activity activity)
    + onPreExecute
    + doInBackground
    + onPostExecute
}

Did you realize how many responsibilities your activity had? When you need to use an "e" to quote them, it's a sign that they need refactoring. I suggest that during refactoring you adopt baby-steps, go testing the code with each step and understand what is being done in steps.

I hope I have helped ^^