Use is subject to License Terms. Your use of this web site or any of its content or software indicates your agreement to be bound by these License Terms.

Copyright © 2006 Sun Microsystems, Inc. All rights reserved.

MID Profile

javax.microedition.lcdui
Interface CommandListener


public interface CommandListener

This interface is used by applications which need to receive high-level events from the implementation. An application will provide an implementation of a Listener (typically by using a nested class or an inner class) and will then provide an instance of it on a Screen 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 Listener method does not return or the return is not delayed, the system may be blocked. So, there is the following note to application developers:

See Also:
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

commandAction

public void commandAction(Command c,
                          Displayable d)
Indicates that a command event has occurred on Displayable d.

Note for application developer: the method should return immediately.

Parameters:
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

MID Profile

Copyright © 2006 Sun Microsystems, Inc. All rights reserved. Use is subject to License Terms. Your use of this web site or any of its content or software indicates your agreement to be bound by these License Terms.

For more information, please consult the JSR 37 specification.