realm-java: RealmChangeListener never called inside RealmResults

Hi, i use realm for a lot of time but today i want to try use new feature called “Async query”. I would be grateful for tell me what I’m doing wrong.

realm version: compile ‘io.realm:realm-android:0.86.0’ empty main activity snippet:

 @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main_activity);
    RealmResults< MyRealmObject> realmResults = Realm.getInstance(this).where(MyRealmObject.class).findAllAsync();
    realmResults.addChangeListener(new RealmChangeListener() {
        @Override
        public void onChange() {
            System.out.println("Never called...");
        }
    });

}

If i attached debbuger it stay on notifyChangeListeners and listener is not called because “this.currentTableViewVersion != version”. RealmQuery is loaded because after few moment i have acces to data inside list. realmresult

About this issue

Original URL
State: closed
Created 9 years ago
Comments: 18 (7 by maintainers)

Most upvoted comments

You need to keep a strong reference to the RealmResults otherwise it’ll be eaten alive by the GC

Zhuinden on May 15, 2017

classpath “io.realm:realm-gradle-plugin:3.1.4”

Called in 80% of cases. Obviously there is a race of streams. If it manages to load before subscribing, it is not called.

 getRealm().where(Foo.class).equalTo(Foo.FIELD_NAME, name).findFirstAsync()
.addChangeListener(new RealmChangeListener<Foo>() {
            @Override
            public void onChange(Foo foo) {
                Log.d("TEST", "update ui");
                foo.removeChangeListener(this);
            }
        });

m4xp1 on May 15, 2017