How do I use callbacks on socket.io clients?… here is a solution to the problem.
How do I use callbacks on socket.io clients?
I want to call back to the server to confirm that my customer has received the call. In the opposite direction, this is heavily documented and working fine, but how do I confirm from the client?
Note: I’m using socket-io-java-client https://github.com/socketio/socket.io-client-java on Android, not JavaScript, but it doesn’t matter. Well, maybe so.
socket.on("onMessage", new Emitter.Listener() {
@Override public void call(Object... args) {
I have the args here and the last argument is a callback,
but what do I need to do to callback the server using that arg?
}
})
In Swift it looks like this, but I can’t figure out how to do this in Java using the above library.
socket.on("onMessage") { data, ack in
ack? ()
}
Has anyone done this or knows how to implement that?
Solution
I overlooked this. Here’s an example:
https://github.com/socketio/socket.io-client-java
// ack from client to server
socket.on("foo", new Emitter.Listener() {
@Override
public void call(Object... args) {
Ack ack = (Ack) args[args.length - 1];
ack.call();
}
});
[Thanks to Alex, he just sent me the URL via Skype.] ]