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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:
Displayable.setCommandListener(javax.microedition.lcdui.CommandListener)| Method Summary | ||
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void |
commandAction(Command c,
Displayable d)
Indicates that a command event has occurred on Displayable d. |
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| Method Detail |
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void commandAction(Command c,
Displayable d)
Note for application developer: the method should return immediately.
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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