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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: Class Spacer</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/Spacer.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/lcdui/Screen.html"><B>PREV CLASS</B></A> <A HREF="../../../javax/microedition/lcdui/StringItem.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="Spacer.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | <A HREF="#fields_inherited_from_class_javax.microedition.lcdui.Item">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">javax.microedition.lcdui</FONT><BR>Class Spacer</H2><PRE>java.lang.Object | +--<A HREF="../../../javax/microedition/lcdui/Item.html">javax.microedition.lcdui.Item</A> | +--<B>javax.microedition.lcdui.Spacer</B></PRE><HR><DL><DT>public class <B>Spacer</B><DT>extends <A HREF="../../../javax/microedition/lcdui/Item.html">Item</A></DL><P>A blank, non-interactive item that has a settable minimum size. The minimum width is useful for allocating flexible amounts of space between <code>Items</code> within the same row of a <code>Form</code>. The minimum height is useful for enforcing a particular minimum height of a row. The application can set the minimum width or height to any non-negative value. The implementation may enforce implementation-defined maximum values for the minimum width and height. <p>The unlocked preferred width of a <code>Spacer</code> is the same as its current minimum width. Its unlocked preferred height is the same as its current minimum height.</p> <p>Since a <code>Spacer's</code> primary purpose is to position other items, it is restricted to be non-interactive, and the application is not allowed to add <code>Commands</code> to a <code>Spacer</code>. Since the presence of a label on an <code>Item</code> may affect layout in device-specific ways, the label of a <code>Spacer</code> is restricted to always be <code>null</code>, and the application is not allowed to change it.</p><P><DL><DT><B>Since: </B><DD>MIDP 2.0</DD></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="fields_inherited_from_class_javax.microedition.lcdui.Item"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from class javax.microedition.lcdui.<A HREF="../../../javax/microedition/lcdui/Item.html">Item</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../javax/microedition/lcdui/Item.html#BUTTON">BUTTON</A>, <A HREF="../../../javax/microedition/lcdui/Item.html#HYPERLINK">HYPERLINK</A>, <A HREF="../../../javax/microedition/lcdui/Item.html#LAYOUT_2">LAYOUT_2</A>, <A HREF="../../../javax/microedition/lcdui/Item.html#LAYOUT_BOTTOM">LAYOUT_BOTTOM</A>, <A HREF="../../../javax/microedition/lcdui/Item.html#LAYOUT_CENTER">LAYOUT_CENTER</A>, <A HREF="../../../javax/microedition/lcdui/Item.html#LAYOUT_DEFAULT">LAYOUT_DEFAULT</A>, <A HREF="../../../javax/microedition/lcdui/Item.html#LAYOUT_EXPAND">LAYOUT_EXPAND</A>, <A HREF="../../../javax/microedition/lcdui/Item.html#LAYOUT_LEFT">LAYOUT_LEFT</A>, <A HREF="../../../javax/microedition/lcdui/Item.html#LAYOUT_NEWLINE_AFTER">LAYOUT_NEWLINE_AFTER</A>, <A HREF="../../../javax/microedition/lcdui/Item.html#LAYOUT_NEWLINE_BEFORE">LAYOUT_NEWLINE_BEFORE</A>, <A HREF="../../../javax/microedition/lcdui/Item.html#LAYOUT_RIGHT">LAYOUT_RIGHT</A>, <A HREF="../../../javax/microedition/lcdui/Item.html#LAYOUT_SHRINK">LAYOUT_SHRINK</A>, <A HREF="../../../javax/microedition/lcdui/Item.html#LAYOUT_TOP">LAYOUT_TOP</A>, <A HREF="../../../javax/microedition/lcdui/Item.html#LAYOUT_VCENTER">LAYOUT_VCENTER</A>, <A HREF="../../../javax/microedition/lcdui/Item.html#LAYOUT_VEXPAND">LAYOUT_VEXPAND</A>, <A HREF="../../../javax/microedition/lcdui/Item.html#LAYOUT_VSHRINK">LAYOUT_VSHRINK</A>, <A HREF="../../../javax/microedition/lcdui/Item.html#PLAIN">PLAIN</A></CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../javax/microedition/lcdui/Spacer.html#Spacer(int, int)">Spacer</A></B>(int minWidth, int minHeight)</CODE><BR> Creates a new <code>Spacer</code> with the given minimum size.</TD></TR></TABLE> <!-- ========== 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> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/microedition/lcdui/Spacer.html#addCommand(javax.microedition.lcdui.Command)">addCommand</A></B>(<A HREF="../../../javax/microedition/lcdui/Command.html">Command</A> cmd)</CODE><BR> <code>Spacers</code> are restricted from having <code>Commands</code>, so this method will always throw <code>IllegalStateException</code> whenever it is called.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/microedition/lcdui/Spacer.html#setDefaultCommand(javax.microedition.lcdui.Command)">setDefaultCommand</A></B>(<A HREF="../../../javax/microedition/lcdui/Command.html">Command</A> cmd)</CODE><BR> Spacers are restricted from having <code>Commands</code>, so this method will always throw <code>IllegalStateException</code> whenever it is called.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/microedition/lcdui/Spacer.html#setLabel(java.lang.String)">setLabel</A></B>(String label)</CODE><BR> <code>Spacers</code> are restricted to having <code>null</code> labels, so this method will always throw <code>IllegalStateException</code> whenever it is called.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/microedition/lcdui/Spacer.html#setMinimumSize(int, int)">setMinimumSize</A></B>(int minWidth, int minHeight)</CODE><BR> Sets the minimum size for this spacer.</TD></TR></TABLE>⌨️ 快捷键说明
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