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This interface is used by applications which need to receive
high-level events from the implementation. An application will
provide an implementation of a CommandListener
(typically by using
a nested class or an inner class) and will then provide the
instance to the addCommand method on a
Displayable in
order to receive high-level events on that screen.
The specification does not require the platform to create several
threads for the event delivery.
Thus, if a CommandListener method does not return
or the return is
not delayed, the system may be blocked. So, there is the following note to
application developers:
CommandListener method should return
immediately.
Displayable.setCommandListener(javax.microedition.lcdui.CommandListener)| Method Summary | |
void |
commandAction(Command c,
Displayable d)
Indicates that a command event has occurred on Displayable d. |
| Method Detail |
public void commandAction(Command c,
Displayable d)
Displayable d.
c - a Command object identifying the
command. This is either one of the
applications have been added to Displayable with
addCommand(Command) or is the implicit
SELECT_COMMAND of
List.d - the Displayable on which this event
has occurred
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