Get string from an Edittext

Question

I’m a beginner in android and the max that I managed to do so far is to press the save button it prints in the log that I wrote, but I’m not able to store this in a variable.

  package com.example.igor.blocodenotas;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutCompat;
import android.util.Log;
import android.widget.EditText;
import android.widget.Toast;

/**
 * Created by Igor on 19/05/2016.
 */
public class Dialogobox extends DialogFragment{
    @Override
    public Dialog onCreateDialog(Bundle saveInstanceState){
        AlertDialog.Builder builder=new AlertDialog.Builder(getActivity());
        builder.setTitle("Insira sua anotação:");
        // DECLARACAO DO EDITTEXT
        final EditText anotacao = new EditText(getActivity());
        builder.setView(anotacao);


        builder.setNegativeButton(R.string.cancelar,new DialogInterface.OnClickListener(){
            @Override
            public void onClick(DialogInterface dialog, int which){
                Toast.makeText(getActivity(),"você clicou em cancelar",Toast.LENGTH_SHORT).show();
            }
        });
        builder.setPositiveButton(R.string.salvar,new DialogInterface.OnClickListener(){
            @Override
            public void onClick(DialogInterface dialog, int which){
               Log.v("EditText",anotacao.getText().toString());
            }
        });
        Dialog dialog=builder.create();

        return dialog;
    }
}