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SDK de Dispositivo Atlas

Java SDK

Referencia de API

io.realm

Clase RealmMap

Los SDK de dispositivos Atlas están obsoletos. Consulte deprecation page for details.

io.realm

java.lang.Object

io.realm.RealmMap

Implemented interfaces:

java.util.Map

RealmMap se utiliza para asignar claves a valores. Un RealmMap no puede contener claves duplicadas y cada clave puede asignarse a un valor como máximo. Un RealmMap no puede tener null claves pero pueden tener valores null.

Similarly to RealmList s, a RealmDictionary can operate in managed and unmanaged modes. In managed mode a RealmDictionary persists all its contents inside a Realm whereas in unmanaged mode it functions like a HashMap .

Managed RealmDictionaries can only be created by Realm and will automatically update its content whenever the underlying Realm is updated. Managed RealmDictionaries can only be accessed using the getter that points to a RealmDictionary field of a RealmObject .

Unmanaged RealmDictionaries can be created by the user and can contain both managed and unmanaged RealmObjects. This is useful when dealing with JSON deserializers like GSON or other frameworks that inject values into a class. Unmanaged RealmMaps can be added to a Realm using the Realm.copyToRealm(Iterable, ImportFlag...) method.

Resumen del método

Modificador y Tipo	Método y descripción
public void	addChangeListener ( io.realm.RealmChangeListener<io.realm.RealmMap<K, V>> listener ) Agrega un listener de cambios a este RealmMap .
public void	addChangeListener ( io.realm.MapChangeListener<K, V> listener ) Agrega un listener de cambios a este RealmMap .
public void	clear ()
public booleano	containsKey ( Object key )
public booleano	containsValue ( Object value )
public Set	entrySet ()
Mapa público del reino	freeze ()
public V	get ( Object key )
public booleano	isEmpty ()
public booleano	isFrozen ()
public booleano	isManaged ()
public booleano	isValid ()
public Set	keySet ()
public V	put ( K key, V value )
public void	putAll ( java.util.Map<? extends K, ? extends V> m )
public V	remove ( Object key )
public void	removeAllChangeListeners () Removes all user-defined change listeners.
public void	removeChangeListener ( io.realm.RealmChangeListener<io.realm.RealmMap<K, V>> listener ) Removes the specified change listener.
public void	removeChangeListener ( io.realm.MapChangeListener<K, V> listener ) Removes the specified change listener.
public int	size ()
public colección	values ()

Inherited Methods

Methods inherited from class java.lang.Object : getClass , hashCode , equals , clone , toString , notify , notifyAll , wait , wait , wait , finalize

Detalle del método

addChangeListener

public void addChangeListener (

io.realm.RealmChangeListener<io.realm.RealmMap<K, V>> listener

)

Agrega un listener de cambios a este RealmMap .

Registrar un listener de cambios no evitará que el RealmMap subyacente sea recolectado como basura. Si el RealmMap se recolecta como basura, el listener de cambios dejará de activarse. Para evitar esto, mantén una referencia fuerte todo el tiempo que sea necesario, por ejemplo, en una variable de clase.

public class MyActivity extends Activity {
    private RealmMap<String, Dog> dogs; // Strong reference to keep listeners alive
    @Override
    protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      dogs = realm.where(Person.class).findFirst().getDogs();
      dogs.addChangeListener(new RealmChangeListener<RealmMap<String, Dog>>() {
          @Override
          public void onChange(RealmMap<String, Dog> map) {
              // React to change
          }
      });
    }
}

Parámetros

listener - the change listener to be notified.

Throws

IllegalArgumentException - if the change listener is null .
IllegalStateException - if you try to add a listener from a non-Looper or android.app.IntentService thread.

Tip

io.realm.RealmChangeListener

public void addChangeListener (

io.realm.MapChangeListener<K, V> listener

)

Agrega un listener de cambios a este RealmMap .

public class MyActivity extends Activity {
    private RealmMap<String, Dog> dogs; // Strong reference to keep listeners alive
    @Override
    protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      dogs = realm.where(Person.class).findFirst().getDogs();
      dogs.addChangeListener(new MapChangeListener<String, Dog>() {
          @Override
          public void onChange(RealmMap<String, Dog> map, MapChangeSet<String> changeSet) {
              // React to change
          }
      });
    }
}

Parámetros

listener - the change listener to be notified.

Throws

IllegalArgumentException - if the change listener is null .
IllegalStateException - if you try to add a listener from a non-Looper or android.app.IntentService thread.

borrar

public void clear ()

containsKey

public boolean containsKey ( Object key )

containsValue

public boolean containsValue ( Object value )

entrySet

public Set entrySet ()

freeze

public RealmMap freeze ()

Obtener

public V get ( Object key )

isEmpty

public boolean isEmpty ()

isFrozen

public boolean isFrozen ()

esGestionado

public boolean isManaged ()

isValid

public boolean isValid ()

keySet

public Set keySet ()

poner

public V put ( K key, V value )

putAll

public void putAll ( java.util.Map<? extends K, ? extends V> m )

Remover

public V remove ( Object key )

removeAllChangeListeners

public void removeAllChangeListeners ()
Removes all user-defined change listeners. Throws IllegalStateException - if you try to remove listeners from a non-Looper Thread. Tip io.realm.RealmChangeListener

removeChangeListener

public void removeChangeListener ( io.realm.RealmChangeListener<io.realm.RealmMap<K, V>> listener )
Removes the specified change listener. Parámetros `listener` - the change listener to be removed. Throws IllegalArgumentException - if the change listener is `null` . IllegalStateException - if you try to remove a listener from a non-Looper Thread. Tip io.realm.RealmChangeListener

public void removeChangeListener ( io.realm.MapChangeListener<K, V> listener )
Removes the specified change listener. Parámetros `listener` - the change listener to be removed. Throws IllegalArgumentException - if the change listener is `null` . IllegalStateException - if you try to remove a listener from a non-Looper Thread.

tamaño

public int size ()

values

public Collection values ()

Volver

RealmList

RealmMigration