Realm不会在IntentService中写入数据

Question

我的应用程序中有Realm数据库。当我的应用程序处于活动状态时，我没有写入数据的问题，但如果我启动IntentService然后关闭应用程序，我在Realm数据库中什么都没有。

我的IntentService：

@Override
protected void onHandleIntent(Intent intent) {

            RealmResults<HashtagObject> hashtags;
            SubscriberObject subscriber = new SubscriberObject();

            Realm realmForThisThread = Realm.getDefaultInstance();
            hashtags = realmForThisThread.where(HashtagObject.class).findAll();

           for(int i=0;i<hashtags.size();i++){
                getRecentlyTag(Constants.API_URL);
            }
            realmForThisThread.beginTransaction();

            for (Map.Entry entry : hm.entrySet()) {
                if(realmForThisThread.where(SubscriberObject.class)
                        .equalTo(SubscriberObject.ID,entry.getKey().toString()).findAll().isEmpty()) {
                    subscriber.setId(entry.getKey().toString());
                    subscriber.setUsername(entry.getValue().toString());
                    subscriber.setDate(mDate.getTime());
                    realmForThisThread.insert(subscriber);
                }
            }
            realmForThisThread.commitTransaction();
            realmForThisThread.close();
}

private void getRecentlyTag（String path，final String tagName）{

            HttpURLConnection urlConnection = null;
            try {
                Thread.sleep(10000);
                URL url = new URL(path);
                urlConnection = (HttpURLConnection) url
                        .openConnection();
                urlConnection.setRequestMethod("GET");
                urlConnection.setDoInput(true);
                urlConnection.connect();
                String response = Tools.streamToString(urlConnection
                        .getInputStream());
                JSONObject jsonObj = (JSONObject) new JSONTokener(response)
                        .nextValue();
                for(int i=0;i<jsonObj.getJSONArray("data").length();i++) {
                    JSONObject json = (JSONObject) jsonObj.getJSONArray("data").get(i);
                   hm.put(json.getJSONObject("user").getString("id"),json.getJSONObject("user").getString("username"));
                }

            }catch(Exception exc){
                exc.printStackTrace();
            }finally {
                if(urlConnection!=null){
                    try{
                        urlConnection.disconnect();
                    }catch(Exception e){
                        e.printStackTrace();
                    }
                }
            }
}

我正在使用：

classpath "io.realm:realm-gradle-plugin:2.0.2" // Top-level build file
compile 'io.realm:android-adapters:1.3.0' //app gradle 

在片段中启动IntentService，如：

    @OnClick(R.id.find_users)
    public void startClick(){
        Intent intent = new Intent(getActivity(), SubscribersGathering.class);
        getActivity().startService(intent);
    }

Application类中的Realm cofigs：

    Realm.init(this);
    RealmConfiguration realmConfiguration = new RealmConfiguration.Builder()
            .deleteRealmIfMigrationNeeded()
            .build();
    Realm.setDefaultConfiguration(realmConfiguration);