modify publish topic

app/src/main/java/com/electric/chargingpile/activity/PublishTopicActivity.java

                String rtnCode = JsonUtils.getKeyResult(response, "code");
                if ("1000".equals(rtnCode)) {
                    ToastUtil.showToast(getApplicationContext(), "发布成功", Toast.LENGTH_SHORT);
                    finish();
                } else {
                    String message = JsonUtils.getKeyResult(response, "desc");
                    ToastUtil.showToast(getApplicationContext(), message, Toast.LENGTH_SHORT);