📄 controllable.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Fri Sep 27 14:47:31 CDT 2002 --><TITLE>Mobile Information Device Profile 2.0: Interface Controllable</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/Controllable.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><strong>MIDP 2.0</strong></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../javax/microedition/media/Control.html"><B>PREV CLASS</B></A> <A HREF="../../../javax/microedition/media/Player.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="Controllable.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">javax.microedition.media</FONT><BR>Interface Controllable</H2><DL><DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../../javax/microedition/media/Player.html">Player</A></DD></DL><HR><DL><DT>public interface <B>Controllable</B></DL><P><code>Controllable</code> provides an interface for obtaining the <code>Control</code>s from an object like a <code>Player</code>. It provides methods to query all the supported <code>Control</code>s and to obtain a particular <code>Control</code> based on its class name.<P><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../javax/microedition/media/Control.html">Control</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/microedition/media/Controllable.html#getControl(java.lang.String)">getControl</A></B>(String controlType)</CODE><BR> Obtain the object that implements the specified <code>Control</code> interface.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../javax/microedition/media/Control.html">Control</A>[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/microedition/media/Controllable.html#getControls()">getControls</A></B>()</CODE><BR> Obtain the collection of <code>Control</code>s from the object that implements this interface.</TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="getControls()"><!-- --></A><H3>getControls</H3><PRE>public <A HREF="../../../javax/microedition/media/Control.html">Control</A>[] <B>getControls</B>()</PRE><DL><DD>Obtain the collection of <code>Control</code>s from the object that implements this interface. <p> Since a single object can implement multiple <code>Control</code> interfaces, it's necessary to check each object against different <code>Control</code> types. For example: <p> <code> Controllable controllable;<br> :<br> Control cs[];<br> cs = controllable.getControls();<br> for (int i = 0; i < cs.length; i++) {<br> if (cs[i] instanceof ControlTypeA)<br> doSomethingA();<br> if (cs[i] instanceof ControlTypeB)<br> doSomethingB();<br> // etc. <br> }<br> </code> <p> The list of <code>Control</code> objects returned will not contain any duplicates. And the list will not change over time. <p> If no <code>Control</code> is supported, a zero length array is returned.<DD><DL><DT><B>Returns:</B><DD>the collection of <code>Control</code> objects.<DT><B>Throws:</B><DD><CODE><A HREF="../../../java/lang/IllegalStateException.html">IllegalStateException</A></CODE> - Thrown if <code>getControls</code> is called in a wrong state. See <a href="Player.html#controls"><code>Player</code></a> for more details.</DL></DD></DL><HR><A NAME="getControl(java.lang.String)"><!-- --></A><H3>getControl</H3><PRE>public <A HREF="../../../javax/microedition/media/Control.html">Control</A> <B>getControl</B>(String controlType)</PRE><DL><DD>Obtain the object that implements the specified <code>Control</code> interface. <p> If the specified <code>Control</code> interface is not supported then <code>null</code> is returned. <p> If the <code>Controllable</code> supports multiple objects that implement the same specified <code>Control</code> interface, only one of them will be returned. To obtain all the <code>Control</code>'s of that type, use the <code>getControls</code> method and check the list for the requested type.<DD><DL><DT><B>Parameters:</B><DD><CODE>controlType</CODE> - the class name of the <code>Control</code>. The class name should be given either as the fully-qualified name of the class; or if the package of the class is not given, the package <code>javax.microedition.media.control</code> is assumed.<DT><B>Returns:</B><DD>the object that implements the control, or <code>null</code>.<DT><B>Throws:</B><DD><CODE>IllegalArgumentException</CODE> - Thrown if <code>controlType</code> is <code>null</code>.<DD><CODE><A HREF="../../../java/lang/IllegalStateException.html">IllegalStateException</A></CODE> - Thrown if <code>getControl</code> is called in a wrong state. See <a href="Player.html#controls"><code>Player</code></a> for more details.</DL></DD></DL><!-- ========= END OF CLASS DATA ========= --><HR><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_bottom"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_bottom_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/Controllable.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><strong>MIDP 2.0</strong></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../javax/microedition/media/Control.html"><B>PREV CLASS</B></A> <A HREF="../../../javax/microedition/media/Player.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="Controllable.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><font size="-1"><a href="mailto:jsr-118-comments@jcp.org">Send a comment or suggestion</a> Version 2.0 of Mobile Information Device Profile Specification<br>Java is a trademark or registered trademark of Sun Microsystems, Inc. in the US and other countries. Copyright 1993-2002 Sun Microsystems, Inc. and Motorola, Inc. All Rights Reserved. 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.</font></BODY></HTML>⌨️ 快捷键说明
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