PrfString class

A cached preference object for String values.

This class is deprecated. Use Prf instead.

Example:

final username = Prf<String>('username');
Inheritance
Annotations
  • @Deprecated('Use Prf instead. This class will be removed in a future version.')

Constructors

PrfString.new(String key, {String? defaultValue})
Creates a new cached String preference.

Properties

adapter → PrfAdapter<String>
The adapter used to convert between the type T and SharedPreferences.
no setterinherited
cachedValue → String?
Returns the currently cached value without accessing SharedPreferences.
no setterinherited
defaultValue → String?
Optional default value to use when no value exists for key.
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
isolated → PrfIso<String>
Creates an isolate-safe version of this preference.
no setterinherited
key → String
The key used to store this preference in SharedPreferences.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

getValue(SharedPreferencesAsync prefs) → Future<String?>
Gets the value, using the cached value if available or reading from storage if not.
inherited
init() → Future<void>
Initializes the cache by loading the current value from storage.
inherited
initCache(SharedPreferencesAsync prefs) → Future<void>
Initializes the cache by reading the current value from SharedPreferences.
inherited
isValueNull(SharedPreferencesAsync prefs) → Future<bool>
Checks if the stored value is null.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
removeValue(SharedPreferencesAsync prefs) → Future<void>
Removes the value from SharedPreferences and clears the cached value.
inherited
setValue(SharedPreferencesAsync prefs, String value) → Future<void>
Stores value in SharedPreferences and updates the cached value.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited