在 Android 上不区分大小写的领域 findAll

Question

I have an Contact who have aa colum name, that have names on Lower and upercase. I'd want to findAll with Case.INSENSITIVE and i didn't match any answers. How i should do that?

I'm doing it :

realm.where(Contact.class).findAllAsync().sort("name")

Answer 1

As of 2020, Realm does have support for case insensitive queries. I use it in one of my apps and works fine:

String searchText = "john"; // Some name
RealmResults<Person> persons = realm.where(Person.class).contains("username", searchText, Case.INSENSITIVE);

It'll pull John, JOHN, john, etc.

Answer 2

Case.INSENSITIVE flag is not yet supported for sort method. You should get all results and then sort it manually :

RealResults<Contact> list = realm.where(Contact.class)
    .findAll()
    .sort("name");

Collections.sort(list, new Comparator<Contact>() {
    @Override
    public int compare(Contact c1, Contact c2) {
        return c1.getName().compareToIgnoreCase(c2.getName());
    }
});

Answer 3

Realm doesn't have a native solution for that question.

I have solved it creating an extra colum with lowerCases "name", and then a sort by lowerCase, like this:

realm.where(Contact.class).findAllSortedAsync("lowerCase"));