Passing a text to an EditText

I'm making an android app that reads a barcode. I saw a video on youtube that taught how to do and I replicated to be based and worked good. The problem was when I tried to put the return of the reading on a EditText . In video , the result appears with Toast . As much as I try, nothing appears in EditText .

Follow the Java code:

package none.teste;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.EditText;

import android.widget.Toast;

import com.google.zxing.Result;

import me.dm7.barcodescanner.zxing.ZXingScannerView;

import static none.teste.R.layout.activity_menu;

public class Menu extends AppCompatActivity implements ZXingScannerView.ResultHandler{

private ZXingScannerView leitorView;

    EditText editCodigo;

    Leitor l=new Leitor();


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(activity_menu);


        editCodigo = (EditText) findViewById(R.id.editCodigo);
        Toast.makeText(Menu.this,"onCreate",Toast.LENGTH_LONG).show();



    }
    public void LEITURA(View view) {

        leitorView = new ZXingScannerView(this);
        setContentView(leitorView);
        leitorView.setResultHandler(this);
        leitorView.startCamera();
        Toast.makeText(Menu.this,"LEITURA",Toast.LENGTH_LONG).show();


    }

    @Override
    protected void onPause() {
        super.onPause();
        leitorView.stopCamera();
        Toast.makeText(Menu.this,"onPause",Toast.LENGTH_LONG).show();
    }




    @Override
    public void handleResult(Result result) {

        leitorView.stopCamera();
        setContentView(R.layout.activity_menu);
        l.setLido(result.getText().toString());
        editCodigo.setText(l.getLido());
        Toast.makeText(Menu.this,"handleResult",Toast.LENGTH_LONG).show();
        leitorView.resumeCameraPreview(this);
    }

    @Override
    protected void onResume() {
        super.onResume();
        Toast.makeText(Menu.this,"onResume",Toast.LENGTH_LONG).show();
    }

}

These Toasts I put to know where the application was passing and the class Leitor is bullshit, only has a String attribute with getter and setter, does not need it. Anyway, I wanted to pass the result to EditText .