客户端1可以使用发送txt消息给客户端2
connection.getChatManager().createChat(to, this).sendMessage(message);
如何发送其他类型的消息:如 INFO 消息?(客户端 1 到客户端 2)?
因为我想要,INFO 消息不应该显示在聊天窗口中....有可能吗?使用 smack、smackx 库。
非常感谢。
您在这里要做的是为您的短信添加扩展名。这是一个粗略的指南。
Chat chat = connection.getChatManager().createChat(to, this);
Message message = new Message(to, Message.Type.chat);
message.setBody("hello");
message.setProperty(prop0, val0);
message.setProperty(prop1, val1);
chat.sendMessage(message)
属性在单独的命名空间中进行(用于toXML()
查看),不会出现在聊天窗口中。在“另一边”,应用程序用于getProperty()
检索值。
如果您不需要键/值对,而是结构化数据,addExtension()
请在消息正文中使用。这有点复杂,因为您基本上必须扩展PacketExtension
,提供自己的命名空间。您甚至可能必须编写一个PacketExtensionProvider
.
这是消息扩展的示例。XMPP协议的基本XML结构是:</p>
<message
from='sender_jid'
to='receiver_jid'
type='message_type'>
<body> content </body>
</message>
发送消息的过程:</p>
//build chat
Chat chat = chatManager.createChat("jid");
//build extension
UserInfo4XMPP userInfo4XMPP = new UserInfo4XMPP();
userInfo4XMPP.setNameText("userx");
userInfo4XMPP.setUrlText("http://www.liaoku.org/");
//build message
Message message = new Message();
message.setBody("hello");
message.addExtension(userInfo4XMPP);// add the extension
//send
chat.sendMessage(message);
UserInfo4XMPP定义为:</p>
import org.jivesoftware.smack.packet.ExtensionElement;
public class UserInfo4XMPP implements ExtensionElement{
private String elementName = "userinfo";
private String nameElement = "name";
private String urlElement = "url";
private String nameText = "";
private String urlText = "";
@Override
public String getElementName() {
return elementName;
}
@Override
public CharSequence toXML() {
StringBuilder sb = new StringBuilder();
sb.append("<");
sb.append(elementName);
sb.append(">");
sb.append("<");
sb.append(nameElement);
sb.append(">");
sb.append(nameText);
sb.append("</");
sb.append(nameElement);
sb.append(">");
sb.append("<");
sb.append(urlElement);
sb.append(">");
sb.append(urlText);
sb.append("</");
sb.append(urlElement);
sb.append(">");
sb.append("</");
sb.append(elementName);
sb.append(">");
return sb.toString();
}
@Override
public String getNamespace() {
return "";
}
public String getNameText() {
return nameText;
}
public void setNameText(String nameText) {
this.nameText = nameText;
}
public String getUrlText() {
return urlText;
}
public void setUrlText(String urlText) {
this.urlText = urlText;
}
}
一个更复杂的消息扩展示例:
Message videoMsg = new Message();
VideoChatRTP videoXml = new VideoChatRTP();
videoXml.setVideoType(VideoMediaType.REQUEST);
videoXml.setAddress(address);
videoMsg.setTo(receive);
videoMsg.addExtension(videoXml);
XMPPConnection conn = BaseService.getInstance().getConnection();
conn.sendPacket(videoMsg);
扩展类 VideoChatRIP 必须实现 PacketExtension:
public class VideoChatRTP implements PacketExtension {
private VideoMediaType videoType;
private String address;
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public VideoMediaType getVideoType() {
return videoType;
}
public void setVideoType(VideoMediaType videoType) {
this.videoType = videoType;
}
public static final String NAME = "jingle";
public static final String NAME_SPACE = "com:roger:video";
public VideoChatRTP() {
super();
}
@Override
public String getElementName() {
return NAME;
}
@Override
public String getNamespace() {
return NAME_SPACE;
}
@Override
public String toXML() {
StringBuffer sb = new StringBuffer();
sb.append("<jingle").append(" xmlns=\"").append(NAME_SPACE).append(
"\">");
sb.append("<type>").append(videoType).append("</type>");
sb.append("<ipAddress>").append(address).append("</ipAddress>");
sb.append("</jingle>");
return sb.toString();
}
}
聆听者:
ProviderManager.getInstance().addExtensionProvider(VideoChatRTP.NAME, VideoChatRTP.NAME_SPACE, new VideoChatReceive());
加工:
public class VideoChatReceive implements PacketExtensionProvider {
@Override
public PacketExtension parseExtension(XmlPullParser parser)
throws Exception {
boolean done = false;
String requestType = "asdasd";
String ipAddress = "asdasd";
while (!done) {
int eventType = parser.next();
String name = parser.getName();
if (eventType == XmlPullParser.START_TAG) {
if (name.equals("type")) {
requestType = parser.nextText();
}
if (name.equals("ipAddress")) {
ipAddress = parser.nextText();
}
}
if (eventType == XmlPullParser.END_TAG) {
if (name.equals("jingle")) {
done = true;
}
}
}
VideoChatRTP videoRtp = new VideoChatRTP();
videoRtp.setVideoType(VideoMediaType.valueOf(requestType));
videoRtp.setAddress(ipAddress);
return videoRtp;
}
}