xmpp - Android aSmack - How to make custom message extension for file sending? -
i'm trying implement offline file extension chat application. i'm using packetextension , embeddedextensionprovider adding , parsing custom extension. can see values , tags added while sending message, @ receiver end these absent. i'm doing wrong ?
sending message:
<message id="224k2-7" to="testfirzan@sushant" type="chat"> <body>hi</body> <custom xmlns="jabber2:x2:oob2"> <url>url</url> <desc>description</desc> </custom> </message> receiving message:
system.out(734): embeddedextensionprovider <message id="224k2-7" to="testfirzan@sushant" from="testsushant@sushant/smack" type="chat"> <body>hi</body> <custom xmlns="jabber2:x2:oob2"></custom> </message> file extension description:(734): <custom xmlns="jabber2:x2:oob2"></custom> packet extension , provider manager code:
public class fileextension implements packetextension { public static final string element = "custom"; public static final string namespace = "jabber2:x2:oob2"; string description; string url; @override public string getelementname() { return "custom"; } @override public string getnamespace() { return "jabber2:x2:oob2"; } @override public string toxml() { stringbuilder builder = new stringbuilder(); builder.append("<" + getelementname() + " xmlns=\"" + getnamespace() + "\">"); if (url != null) { builder.append("<url>").append(url).append("</url>"); } if (description != null) { builder.append("<desc>").append(description).append("</desc>"); } builder.append("</" + getelementname() + ">"); return builder.tostring(); } public string getdescription() { return description; } public void setdescription(string description) { this.description = description; } public string geturl() { return url; } public void seturl(string imageurl) { this.url = imageurl; } public static class fileextensionprovider extends embeddedextensionprovider { @override protected packetextension createreturnextension(string currentelement, string currentnamespace, map<string, string> attributemap, list<? extends packetextension> content) { system.out.println("embeddedextensionprovider"); return new fileextension(); } } } registering provider :
providermanager.getinstance().addextensionprovider( fileextension.element, fileextension.namespace, new fileextension.fileextensionprovider()); while sending message :
fileextension fileext = new fileextension("url"); fileext.setdescription("description"); fileext.seturl("url"); msg.addextension(fileext); after receiving message :
fileextension fileext = (fileextension) message .getextension("jabber2:x2:oob2"); log.i("file extension description:", fileext.toxml());
following complete solution making custom extension asmack:
1st had create packetextension:
public class extensionfile implements packetextension { public static final string element = "file"; public static final string namespace = "file:namespace"; private string fileurl; private string filesize; @override public string getelementname() { return element; } @override public string getnamespace() { return namespace; } @override public string toxml() { stringbuilder builder = new stringbuilder(); builder.append("<" + getelementname() + " xmlns=\"" + getnamespace() + "\">"); if (fileurl != null) { builder.append("<fileurl>").append(fileurl).append("</fileurl>"); } if (filesize != null) { builder.append("<filesize>").append(filesize).append("</filesize>"); } builder.append("</" + getelementname() + ">"); return builder.tostring(); } public void setfileurl(string fileurl) { this.fileurl = fileurl; } public string getfileurl() { return fileurl; } public void setfilesize(string filesize) { this.filesize = filesize; } public string getfilesize() { return filesize; } } then provider parse packet:
public class extensionproviderfile implements packetextensionprovider { @override public packetextension parseextension(xmlpullparser parser) throws exception { extensionfile fileext = new extensionfile(); int eventtype = parser.next(); while (eventtype == xmlpullparser.start_tag) { string name = parser.getname(); switch (parser.geteventtype()) { case xmlpullparser.start_tag: if (name.equals("fileurl")) { fileext.setfileurl(parser.nexttext()); } else if (name.equals("filesize")) { fileext.setfilesize(parser.nexttext()); } } eventtype = parser.next(); } return fileext; } } sending message file extension:
private void sendmessage(string recipient, string message){ message msg = new message(recipient,message.type.chat); msg.setbody(message); //create extension , set values extensionfile fileext = new extensionfile(); fileext.setfileurl("http://www.example.com/upload_files/"+ abc.jpg); fileext.setfilesize(filesize); //add extension message msg.addextension(fileext); //send message xmppconnection.sendpacket(msg); } to receive message implement packetlistener , override processpacket():
@override public void processpacket(packet packet) { message message = (message) packet; //get extension message extensionfile extfile = (extensionfile) message .getextension("file:namespace"); if (extfile != null) { //get values extension string filepath = extfile.getfileurl(); string filesize = extfile.getfilesize(); system.out.println("message :" + message.getbody() + " file url:" + filepath + " file size:" + filesize); } } and add provide before connecting xmpp server:
providermanager.getinstance().addextensionprovider( extensionfile.element, extensionfile.namespace, new extensionproviderfile());
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