get

abstract operator fun <T> get(key: Preferences.Key<T>): T?(source)

Get a preference with a key. If the key is not set, returns null.

If T is Set, this returns an unmodifiable set which will throw a runtime exception when mutated. Do not try to mutate the returned set.

Use MutablePreferences.set to change the value of a preference (inside a DataStore.edit block).

the type of the preference

key

the key for the preference

ClassCastException

if there is something stored with the same name as key but it cannot be cast to T