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MID Profile: Interface CommandListener
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Interface CommandListener</H2>
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<DT>public interface <B>CommandListener</B></DL>
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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 <code>CommandListener</code> (typically by using a nested class or an inner class) and will then provide the instance to the <CODE>addCommand</CODE> method on a <code>Displayable</code> in order to receive high-level events on that screen. <p>The specification does not require the platform to create several threads for the event delivery. Thus, if a <code>CommandListener</code> method does not return or the return is not delayed, the system may be blocked. So, there is the following note to application developers:</p> <UL> <LI><em>the <code>CommandListener</code> method should return immediately</em>.</LI> </UL>
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<DT><B>Since: </B><DD>MIDP 1.0</DD>
<DT><B>See Also: </B><DD><A HREF="../../../javax/microedition/lcdui/Displayable.html#setCommandListener(javax.microedition.lcdui.CommandListener)"><CODE>Displayable.setCommandListener(javax.microedition.lcdui.CommandListener)</CODE></A></DL>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/lcdui/CommandListener.html#commandAction(javax.microedition.lcdui.Command, javax.microedition.lcdui.Displayable)">commandAction</A></B>(<A HREF="../../../javax/microedition/lcdui/Command.html">Command</A> c, <A HREF="../../../javax/microedition/lcdui/Displayable.html">Displayable</A> d)</CODE>
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Indicates that a command event has occurred on <code>Displayable d</code>.</TD>
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<A NAME="commandAction(javax.microedition.lcdui.Command, javax.microedition.lcdui.Displayable)"><!-- --></A><H3>
commandAction</H3>
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public void <B>commandAction</B>(<A HREF="../../../javax/microedition/lcdui/Command.html">Command</A> c, <A HREF="../../../javax/microedition/lcdui/Displayable.html">Displayable</A> d)</PRE>
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<DD>Indicates that a command event has occurred on <code>Displayable d</code>.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>c</CODE> - a <code>Command</code> object identifying the command. This is either one of the applications have been added to <code>Displayable</code> with <A HREF="../../../javax/microedition/lcdui/Displayable.html#addCommand(javax.microedition.lcdui.Command)"><CODE>addCommand(Command)</CODE></A> or is the implicit <A HREF="../../../javax/microedition/lcdui/List.html#SELECT_COMMAND"><CODE>SELECT_COMMAND</CODE></A> of <code>List</code>.<DD><CODE>d</CODE> - the <code>Displayable</code> on which this event has occurred</DL>
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