mirror of
https://codeberg.org/Mercury-IM/Smack
synced 2024-11-30 02:02:06 +01:00
d9bcfb69ea
git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@2076 b35dd754-fafc-0310-a699-88a17e54d16e
108 lines
4.4 KiB
HTML
108 lines
4.4 KiB
HTML
<html>
|
|
<head>
|
|
<title>Smack: Chat - Jive Software</title>
|
|
<link rel="stylesheet" type="text/css" href="style.css" />
|
|
</head>
|
|
|
|
<body>
|
|
|
|
<div class="header">
|
|
Messaging using Chat and GroupChat
|
|
</div>
|
|
|
|
<div class="nav">
|
|
« <a href="index.html">Table of Contents</a>
|
|
</div>
|
|
|
|
<p>
|
|
Sending messages back and forth is at the core of instant messaging. Two classes
|
|
aid in sending and receiving messages:
|
|
<ul>
|
|
<li> <tt>org.jivesoftware.smack.Chat</tt> -- used to send messages between two people.
|
|
<li> <tt>org.jivesoftware.smack.GroupChat</tt> -- used to join a chat room to send messages between many people.
|
|
</ul>
|
|
|
|
Both the Chat and GroupChat classes use the <tt>org.jivesoftware.smack.packet.Message</tt> packet
|
|
class to send messages. In certain circumstances, you may wish to bypass the higher-level
|
|
Chat and GroupChat classes to send and listen for messages directly.
|
|
</p>
|
|
|
|
<p class="subheader">
|
|
Chat
|
|
</p>
|
|
|
|
A chat creates a new thread of messages (using a thread ID) between two users. The
|
|
following code snippet demonstrates how to create a new Chat with a user and then send
|
|
them a text message:<p>
|
|
|
|
<div class="code"><pre>
|
|
<font color="gray"><i>// Assume we've created an XMPPConnection name "connection".</i></font>
|
|
Chat newChat = connection.createChat(<font color="green">"jsmith@jivesoftware.com"</font>);
|
|
newChat.sendMessage(<font color="green">"Howdy!"</font>);
|
|
</pre></div><p>
|
|
|
|
The <tt>Chat.sendMessage(String)</tt> method is a convenience method that creates a Message
|
|
object, sets the body using the String parameter, then sends the message. In the case
|
|
that you wish to set additional values on a Message before sending it, use the
|
|
<tt>Chat.createMessage()</tt> and <tt>Chat.sendMessage(Message)</tt> methods, as in the
|
|
following code snippet:<p>
|
|
|
|
<div class="code"><pre>
|
|
<font color="gray"><i>// Assume we've created an XMPPConnection name "connection".</i></font>
|
|
Chat newChat = connection.createChat(<font color="green">"jsmith@jivesoftware.com"</font>);
|
|
Message newMessage = newChat.createMessage();
|
|
newMessage.setBody(<font color="green">"Howdy!"</font>);
|
|
message.setProperty(<font color="green">"favoriteColor"</font>, <font color="green">"red"</font>);
|
|
newChat.sendMessage(newMessage);
|
|
</pre></div><p>
|
|
|
|
The Chat object allows you to easily listen for replies from the other chat participant.
|
|
The following code snippet is a parrot-bot -- it echoes back everything the other user types.<p>
|
|
|
|
<div class="code"><pre>
|
|
<font color="gray"><i>// Assume we've created an XMPPConnection name "connection".</i></font>
|
|
Chat newChat = connection.createChat(<font color="green">"jsmith@jivesoftware.com"</font>);
|
|
newMessage.setBody(<font color="green">"Hi, I'm an annoying parrot-bot! Type something back to me."</font>);
|
|
<b>while</b> (<b>true</b>) {
|
|
<font color="gray"><i>// Wait for the next message the user types to us.</i></font>
|
|
Message message = newChat.nextMessage();
|
|
<font color="gray"><i>// Send back the same text the other user sent us.</i></font>
|
|
newChat.sendMessage(message.getBody());
|
|
}
|
|
</pre></div><p>
|
|
|
|
The code above uses the <tt>Chat.nextMessage()</tt> method to get the next message, which
|
|
will wait indefinitely until another message comes in. There are other methods to wait
|
|
a specific amount of time for a new message, or you can add a listener that will be notified
|
|
every time a new message arrives.
|
|
|
|
<p class="subheader">
|
|
GroupChat
|
|
</p>
|
|
|
|
A group chat connects to a chat room on a server and allows you to send and receive messages
|
|
from a group of people. Before you can send or receive messages, you must join the room using
|
|
a nickname. The following code snippet connects to a chat room and sends a
|
|
message.<p>
|
|
|
|
<div class="code"><pre>
|
|
<font color="gray"><i>// Assume we've created an XMPPConnection name "connection".</i></font>
|
|
GroupChat newGroupChat = connection.createGroupChat(<font color="green">"test@jivesoftware.com"</font>);
|
|
<font color="gray"><i>// Join the group chat using the nickname "jsmith".</i></font>
|
|
newGroupChat.join(<font color="green">"jsmith"</font>);
|
|
<font color="gray"><i>// Send a message to all the other people in the chat room.</i></font>
|
|
newGroupChat.sendMessage(<font color="green">"Howdy!"</font>);
|
|
</pre></div><p>
|
|
|
|
In general, sending and receiving messages in a group chat works very similarly to
|
|
the <tt>Chat</tt> class. Method are also provided to get the list of the other
|
|
users in the room.<p>
|
|
|
|
<br clear="all" /><br><br>
|
|
|
|
<div class="footer">
|
|
Copyright © Jive Software 2002-2003
|
|
</div>
|
|
|
|
</body>
|
|
</html>
|