Realm の設定とオープン - Flutter SDK

// Create in-memory realm and add data to it.
// Note that even though the realm is in-memory, it still has a file path.
// This is because in-memory realms still use memory-mapped files
// for their operations; they just don't persist data across launches.
final inMemoryRealm =
    Realm(Configuration.inMemory([Person.schema], path: 'inMemory.realm'));
inMemoryRealm.write(() {
  inMemoryRealm.addAll([Person("Tanya"), Person("Greg"), Person("Portia")]);
});
// Copy contents of `inMemoryRealm` to a new realm with `localConfig`.
// `localConfig` uses the default file path for local realms.
final localConfig = Configuration.local([Person.schema]);
inMemoryRealm.writeCopy(localConfig);
// Close the realm you just copied when you're done working with it.
inMemoryRealm.close();
// Open the local realm that the data from `inMemoryRealm`
// was just copied to with `localConfig`.
final localRealm = Realm(localConfig);
// Person object for "Tanya" is in `localRealm` because
// the data was copied over with `inMemoryRealm.writeCopy()`.
final tanya = localRealm.find<Person>("Tanya");

// Create unencrypted realm and add data to it.
final unencryptedRealm = Realm(Configuration.local([Person.schema]));
unencryptedRealm.write(() => unencryptedRealm.addAll([
      Person("Daphne"),
      Person("Harper"),
      Person("Ethan"),
      Person("Cameron")
    ]));
// Create encryption key and encrypted realm.
final key = List<int>.generate(64, (i) => Random().nextInt(256));
final encryptedConfig = Configuration.local([Person.schema],
    path: 'encrypted.realm', encryptionKey: key);
// Copy the data from `unencryptedRealm` to a new realm with
// the `encryptedConfig`. The data is encrypted as part of the copying.
unencryptedRealm.writeCopy(encryptedConfig);
// Close the realm you just copied when you're done working with it.
unencryptedRealm.close();
// Open the new encrypted realm with `encryptedConfig`.
final encryptedRealm = Realm(encryptedConfig);
// Person object for "Harper" is in `localRealm` because
// the data was copied over with `unencryptedRealm.writeCopy()`.
final harper = encryptedRealm.find<Person>('Harper');