Question

hi all
since i am using a button and on the click of that button it connects to a Web Service.
But the problem is that when i press the button it does not showed me that it has been clicked and goes to connect to the internet and web service. after connecting it shows me the response that it has been clicked. in short the response of button is very slow. if that buton has some INternet connectvity in its Listener.
i know it has something to do with UI thread. but please friends guide me through this.

Thanks a bunch,

Answer 1

Put the following code in your class:

 // Need handler for callbacks to UI Threads
    // For background operations
    final Handler mHandler = new Handler();

    // Create Runnable for posting results
    final Runnable mUpdateResults = new Runnable() {
        public void run() {
            // Do your task which needs to get done after webservice call is complete.
        }
    };

And for calling the webservice use the following code in button event:

new Thread() {
            public void run() {             
                // Place the webservice call here.   

                mHandler.post(mUpdateResults);
            }
            }.start();

Actually what are you looking for is multithreading, all the webservice calls and network activities should go in separate thread.
After the thread start() call you can do what ever you want and would be done instantly without any delay (in your case showing that button pressed).