Realm Java 0.79.0

We recently released a Realm Java update to this website and to Maven. This release includes support for primary keys, and Realm now adds 70% less weight to your APK!

Primary Keys

You’ve been asking for primary keys ever since our first java release — finally, we’re happy to announce that this much-needed feature is supported by Realm. Simply use the @PrimaryKey annotation. Only String and integer (short, int, and long) fields can be used as primary keys.

ARM64 support

Nexus 9 users rejoice. The ARM64 processor is now among the architectures we support.

Realm Library Size Decreased by ~70%

Realm used to add around 3MB to your APK size. Thanks to some C++ optimizations, this should now be down to about 800KB for ARM devices, if you use a split APK. You can read more about how you can achieve this on our blog.

Minor improvements

• We have added the method RealmQuery.not() which can negate a condition. It is very useful with beginGroup()/endGroup() when you need to negate a part of a condition.
• The error messages have improved a few places, and Realm.deleteRealmFile() will throw an exception when an instance of the Realm is still open.
• The Realm.allObjectSorted() has been reimplemented for better performance.

Deprecated methods

A number of methods were deprecated in 0.76, and they are now removed. Realm.allObjectsSorted() and RealmQuery.findAllSorted() need to be used instead.

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Thanks for reading. Now go forth and build amazing apps with Realm! As always, we’re around on the mailing list, StackOverflow, GitHub, and twitter.