BufferedReader não está lendo o retorno do POST - JSON

Mobile
#1

Alguém poderia me ajudar, pq não está lendo o retorno do Post, já fiz vários teste com Breakpoint
essas duas linhas em negritos.

reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));

StringBuilder sb = new StringBuilder();

private void GetText() throws UnsupportedEncodingException, JSONException {

    StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
    StrictMode.setThreadPolicy(policy);

    JSONObject jsonParam = new JSONObject();

    String loginE = Login.getText().toString();
    String senhaE = Senha.getText().toString();
    String filialE = Filial.getText().toString();

    //atribuir retorno de textview a uma string
    jsonParam.put("login", (loginE));
    jsonParam.put("senha", (senhaE));
    jsonParam.put("filial", (filialE));


    String text = "";
    BufferedReader reader=null;

    // Send data
    try
    {

        // Defined URL  where to send data
        URL url = new URL("http://AAA.AAA.AAA.AAA:XXXX/masterlink_android/webresources/android_masterlink/Login");

        // Send POST data request

        URLConnection conn = url.openConnection();
        conn.setDoOutput(true);
        OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
        wr.write(jsonParam.toString());
        wr.flush();

        // Get the server response

        reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));

        StringBuilder sb = new StringBuilder();

        String line = null;

        // Read Server Response
        while((line = reader.readLine()) != null)
        {
            // Append server response in string
            sb.append(line + "\n");
        }


        text = sb.toString();
    }
    catch(Exception ex)
    {

    }
    finally
    {
        try
        {

            reader.close();
        }

        catch(Exception ex) {}
    }

        if (text.equals("true")) {
            Toast.makeText(Login.this, "SEJA BEM VINDO", Toast.LENGTH_LONG).show();
            Intent i = new Intent(this, TelaDistribuicao.class);
            i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            startActivity(i);
            finish();
        } else {
            Toast.makeText(Login.this, "DADOS INCORRETO, TENTE NOVAMENTE", Toast.LENGTH_LONG).show();
        }
    }