alerttype.html

是MIDP 的API 查詢文件, 大家可以看一下裡面的index.html, 再用Package 或 Class 名字來查.

<TD><CODE><B><A HREF="../../../javax/microedition/lcdui/AlertType.html#playSound(javax.microedition.lcdui.Display)">playSound</A></B>(<A HREF="../../../javax/microedition/lcdui/Display.html">Display</A>&nbsp;display)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Alert the user by playing the sound for this
 <code>AlertType</code>.</TD>
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<TD><CODE><A HREF="../../../java/lang/Object.html#equals(java.lang.Object)">equals</A>, <A HREF="../../../java/lang/Object.html#getClass()">getClass</A>, <A HREF="../../../java/lang/Object.html#hashCode()">hashCode</A>, <A HREF="../../../java/lang/Object.html#notify()">notify</A>, <A HREF="../../../java/lang/Object.html#notifyAll()">notifyAll</A>, <A HREF="../../../java/lang/Object.html#toString()">toString</A>, <A HREF="../../../java/lang/Object.html#wait()">wait</A>, <A HREF="../../../java/lang/Object.html#wait(long)">wait</A>, <A HREF="../../../java/lang/Object.html#wait(long, int)">wait</A></CODE></TD>
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<A NAME="INFO"><!-- --></A><H3>
INFO</H3>
<PRE>
public static final <A HREF="../../../javax/microedition/lcdui/AlertType.html">AlertType</A> <B>INFO</B></PRE>
<DL>
<DD>An <code>INFO</code> <code>AlertType</code> typically
 provides non-threatening information to the
 user. For example, a simple splash screen might be an
 <code>INFO</code> <code>AlertType</code>.</DL>
<HR>

<A NAME="WARNING"><!-- --></A><H3>
WARNING</H3>
<PRE>
public static final <A HREF="../../../javax/microedition/lcdui/AlertType.html">AlertType</A> <B>WARNING</B></PRE>
<DL>
<DD>A <code>WARNING</code> <code>AlertType</code> is a hint
 to warn the user of a potentially
 dangerous operation.
 For example, the warning message may contain the message, &quot;Warning:
 this operation will erase your data.&quot;</DL>
<HR>

<A NAME="ERROR"><!-- --></A><H3>
ERROR</H3>
<PRE>
public static final <A HREF="../../../javax/microedition/lcdui/AlertType.html">AlertType</A> <B>ERROR</B></PRE>
<DL>
<DD>An <code>ERROR</code> <code>AlertType</code> is a hint
 to alert the user to an erroneous operation.
 For example, an error alert might show the message,
 &quot;There is not enough room to install the application.&quot;</DL>
<HR>

<A NAME="ALARM"><!-- --></A><H3>
ALARM</H3>
<PRE>
public static final <A HREF="../../../javax/microedition/lcdui/AlertType.html">AlertType</A> <B>ALARM</B></PRE>
<DL>
<DD>An <code>ALARM</code> <code>AlertType</code> is a hint
 to alert the user to an event for which
 the user has previously requested to be notified.
 For example, the message might say, &quot;Staff meeting in five
 minutes.&quot;</DL>
<HR>

<A NAME="CONFIRMATION"><!-- --></A><H3>
CONFIRMATION</H3>
<PRE>
public static final <A HREF="../../../javax/microedition/lcdui/AlertType.html">AlertType</A> <B>CONFIRMATION</B></PRE>
<DL>
<DD>A <code>CONFIRMATION</code> <code>AlertType</code> is a
 hint to confirm user actions.
 For example, &quot;Saved!&quot; might be shown to indicate that a Save 
 operation has completed.</DL>

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<A NAME="AlertType()"><!-- --></A><H3>
AlertType</H3>
<PRE>
protected <B>AlertType</B>()</PRE>
<DL>
<DD>Protected constructor for subclasses.</DL>

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<A NAME="playSound(javax.microedition.lcdui.Display)"><!-- --></A><H3>
playSound</H3>
<PRE>
public boolean <B>playSound</B>(<A HREF="../../../javax/microedition/lcdui/Display.html">Display</A>&nbsp;display)</PRE>
<DL>
<DD>Alert the user by playing the sound for this
 <code>AlertType</code>.
 The <code>AlertType</code> instance is used as a hint by the device
 to generate an appropriate sound.  Instances other than
 those predefined above may be ignored.
 The actual sound made by the device,
 if any, is determined by the device. The device may
 ignore the request, use the same sound for
 several <code>AlertTypes</code> or use any other means
 suitable to alert
 the user.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>display</CODE> - to which the <code>AlertType's</code> sound
 should be played.<DT><B>Returns:</B><DD><code>true</code> if the user was alerted,
 <code>false</code> otherwise.<DT><B>Throws:</B><DD><CODE><A HREF="../../../java/lang/NullPointerException.html">NullPointerException</A></CODE> - if <code>display</code> is <code>null</code></DL>
</DD>
</DL>
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