public void buttonLogin(View v) {

        String url = "https://luiscm.000webhostapp.com/login.php";
        JSONObject jsonBody = new JSONObject();

        StringRequest stringRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>(){
            @Override
            public void onResponse(String response){
                try{
                    JSONObject jsonoutput = new JSONObject(response);
                    Toast.makeText(MainActivity.this, getResources().getString(R.string.bemvindo) + " " + jsonoutput.getString(Utils.param_nome).toString(), Toast.LENGTH_SHORT).show();
                    String id_user = jsonoutput.get(Utils.param_id_user).toString();
                    String id = jsonoutput.get(Utils.param_id).toString();
                    SharedPreferences sharedPref = getSharedPreferences(getString(R.string.shared_pref_1), Context.MODE_PRIVATE);
                    SharedPreferences.Editor editor = sharedPref.edit();
                    editor.putString(Utils.id_user, id_user);
                    editor.putString(Utils.id, id);
                    editor.commit();
                    if(jsonoutput.getString(Utils.param_status).equals("1")) {
                        Intent i = new Intent(MainActivity.this, MenuActivity.class);
                        startActivity(i);
                    }
                    else{
                        if(jsonoutput.getString(Utils.param_status).equals("2")){
                            Intent i = new Intent(MainActivity.this, mapanimal.class);
                            startActivity(i);
                        }else{
                            Toast.makeText(MainActivity.this, getResources().getString(R.string.naoexiste), Toast.LENGTH_SHORT).show();
                        }
                    }

                } catch(JSONException ex){

                }
            }
        }, new Response.ErrorListener(){
            @Override
            public void onErrorResponse(VolleyError error){
                //Toast.makeText(MainActivity.this, error.getMessage(), Toast.LENGTH_SHORT).show();
            }
        }){
            @Override
            protected Map<String,String> getParams(){
                username = (EditText) findViewById(R.id.edituser);
                password = (EditText) findViewById(R.id.edit2);

                String username1 = username.getText().toString();
                String password1 = password.getText().toString();

                Map<String,String> params = new HashMap<>();
                params.put("username",username1);
                params.put("password",password1);
                return params;
            }

            @Override
            public Map<String, String> getHeaders() throws AuthFailureError{
                Map<String,String> params = new HashMap<>();
                params.put("Content-type","application/x-www-form-urlencoded");
                return params;
            }
        };

        MySingleton.getInstance(this).addToRequestQueue(stringRequest);


    }