HubProxy.invoke Callbacks are useless.

[ismailakkulak]

HubProxy.invoke Callbacks are useless.

[PabloZaiden]

To do that, you can use the SignalRFuture done and onError handlers.

For instance, when you use the invoke method, you can do the following:

            proxy.invoke("myMethod", "MyParameter")
                .done(new Action<Void>() {

                    @Override
                    public void run(Void obj) throws Exception {
                        // Success
                    }
                })
                .onError(new ErrorCallback() {

                    @Override
                    public void onError(Throwable error) {
                        // Error handling
                    }
                });

[ismailakkulak]

ErrorCallback works great, but done does not work. "Done" runs on different thread from main UI Thread. If you want to dismiss loading dialog or use any UI operation, you don't it. After i saw this problem, i try to getResult() but i have to listen getResult() while operation finished. Finally, i added my callbacks.

You can try below sample code. Your advised sample code is not working for UI operation but Logger is working. If you want to work on UI Thread, you must implement new Handler for UI Thread. To summarize, you need to change callbacks for usability.

    proxy.invoke("myMethod", "MyParameter")
             .done(new Action<Void>() {
                @Override
                public void run(Void obj) throws Exception {
                    Log.i("DONE TEST", "DONE TEST");
                    Toast.makeText(context, "DONE TEST", Toast.LENGTH_SHORT).show();
                     // You must implement new Handler for UI Thread.
                }
            }).onError(new ErrorCallback() {

                @Override
                public void onError(Throwable error) {
                    Toast.makeText(context, "ERROR TEST", Toast.LENGTH_SHORT).show();
                }
            });

[PabloZaiden]

Since you don't always want to run the done handler in the UI thread, you can do the following:

   proxy.invoke("myMethod", "MyParameter")
             .done(new Action<Void>() {
                @Override
                public void run(Void obj) throws Exception {
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            Log.i("DONE TEST", "DONE TEST");
                            Toast.makeText(context, "DONE TEST", Toast.LENGTH_SHORT).show();
                        }
                    });
                }
            }).onError(new ErrorCallback() {

                @Override
                public void onError(Throwable error) {
                    Toast.makeText(context, "ERROR TEST", Toast.LENGTH_SHORT).show();
                }
            });

[ismailakkulak]

I know it, but i don't like this way. I am happy with my callbacks :) You have to notice this way to other users because there is not a warning for UI thread. Thank you.

[hunter123321000]

i try the way 1 (by handler)，i can recieve the result, code as below:

hub.on("receiveHelloWorldReturn",
new SubscriptionHandler1() {
@OverRide
public void run(String msg) {
Log.i("0.03", "Result" + msg);
}
}, String.class);
hub.invoke("HelloWorldReturn");

But i try the way 2 ( direct ), i can't receive the result,

Class resultClass = null;

SignalRFuture str = hub.invoke(resultClass,
"HelloWorld2", "123");
str.done(new Action() {
@OverRide
public void run(String arg0) throws Exception {
Log.i("0.03", "arg0=" + arg0);
}
}).onError(new ErrorCallback() {
@OverRide
public void onError(Throwable error) {
Log.i("0.03", "error=" + error.toString());
}
});

could anyone help me how to recive the result by way 2?
or how to define the resultClass? thanks

[gouravd]

@hunter123321000

You can find details in the Client Test code in the repository. But for brevity this is how you do it.

YourClass resultClass = new YourClass();

hub.invoke(resultClass.class, "HelloWorld2", "123")
.done(new Action() {
@OverRide
public void run(YourClass arg0) throws Exception {
// your code to access YourClass members
}
})
.onError(new ErrorCallback() {
@OverRide
public void onError(Throwable error) {
Log.i("0.03", "error=" + error.toString());
}
});