Showing a progress silder and percentage when uploading data

[cubiq1]

Hi,

My app uploads images to a server. I'd like to display the actual progress of the upload in a dialog. What would be the best way to achieve this?

I've tried this but I don't seem to be getting the correct values:

       NetworkManager.getInstance().addProgressListener(new ActionListener() {

       public void actionPerformed(ActionEvent evt) {

           NetworkEvent e = (NetworkEvent)evt;
           System.out.println(e.getProgressPercentage());
       }});
           
       NetworkManager.getInstance().addToQueueAndWait(r);

Many thanks

[Shai Almog]

Hi,
you need to check the event type. You can use the SliderBridge which does that internally or just reference its source.

[cubiq1]

Hi, thanks.

I've tried the following but it's still not working (the Slider component just bounces back-and-forth, there's no actual percentage progress shown).

       // Method 1
       SliderBridge.bindProgress(r, findSlider());
       NetworkManager.getInstance().addToQueueAndWait(r);

          

       // Method 2

       NetworkManager.getInstance().addProgressListener(new ActionListener() {
               
            public void actionPerformed(ActionEvent evt) {

               
                if (evt instanceof NetworkEvent) {
                   
                    NetworkEvent e = (NetworkEvent)evt;
                    System.out.println("Progress: " + e.getProgressPercentage());
                }
       }});

Any other ideas?

[Shai Almog]

That happens when we don't get actual progress and spend most of our time in a pending to connection mode.

[cubiq1]

Hi,

Is there anyway to show the actual upload progress?

My app uploads images to a server (as base64 strings) via buildRequestBody(OutputStream os) so I'd assume most of the time isn't spent in a pending to connection mode.

Thanks

[Shai Almog]

Hi,
it should work although I haven't tested this in a while. I suggest debugging this and seeing what happens.

[cubiq1]

Hi,

I spent a couple hours this morning debugging and made a very simple app to test things.

Basically, it has one button which downloads an image from a URL while showing a progress dialog. And another button which uploads an image to my webserver (as a base64 encoded string).

The download operation displays the progress correctly whereas the upload operation doesn't, and just shows the slider bouncing back-and-forth.

Is this likely due to the way my webserver is configured? Or should it work seamlessly?

Thanks

[Shai Almog]

Hi,
its possible that upload isn't supported for the progress indication since this feature has predated the MultipartRequest function by quite some time.

[cubiq1]

Hi,

I'm actually using a regular ConnectionRequest, not a MultipartRequest, and sending the image data via the body of the request as a base64 string. For example:

    @Override
    protected void buildRequestBody(OutputStream os) throws IOException {

        os.write(data.getBytes("UTF-8"));
    }

I can only assume SliderBridge doesn't update the percent complete value when uploading data?

Thanks

[Shai Almog]

Hi,
while that probably won't work for you in the real world its inherently the same. That means we built the functionality before we had any significant upload code to debug.

[cubiq1]

Hi, the data is sent to the server in JSON format and seems to be working fine.

Is the best I can do, in this case, show the user an InfiniteProgress dialog?

Thanks

[Shai Almog]

Hi,
the best you can do is debug the code and let us know what is happening specifically.