 Known Direct Subclasses
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Class Overview
Provides methods for registering or unregistering arbitrary observers in an ArrayList.
This abstract class is intended to be subclassed and specialized to maintain
a registry of observers of specific types and dispatch notifications to them.
Summary
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[Expand]
Inherited Methods |
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From class
java.lang.Object
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Object
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clone()
Creates and returns a copy of this Object.
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boolean
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equals(Object o)
Compares this instance with the specified object and indicates if they
are equal.
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void
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finalize()
Invoked when the garbage collector has detected that this instance is no longer reachable.
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final
Class<?>
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getClass()
Returns the unique instance of Class that represents this
object's class. |
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int
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hashCode()
Returns an integer hash code for this object.
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final
void
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notify()
Causes a thread which is waiting on this object's monitor (by means of
calling one of the wait() methods) to be woken up.
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final
void
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notifyAll()
Causes all threads which are waiting on this object's monitor (by means
of calling one of the wait() methods) to be woken up.
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String
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toString()
Returns a string containing a concise, human-readable description of this
object.
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final
void
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wait()
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object.
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final
void
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wait(long millis, int nanos)
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the
specified timeout expires.
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final
void
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wait(long millis)
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the
specified timeout expires.
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Fields
protected
final
ArrayList<T>
mObservers
The list of observers. An observer can be in the list at most
once and will never be null.
Public Constructors
Public Methods
public
void
registerObserver
(T observer)
Adds an observer to the list. The observer cannot be null and it must not already
be registered.
Parameters
| observer
| the observer to register |
public
void
unregisterAll
()
Remove all registered observers.
public
void
unregisterObserver
(T observer)
Removes a previously registered observer. The observer must not be null and it
must already have been registered.
Parameters
| observer
| the observer to unregister |
