How to recover the image in the background?

Hello

I use the static streamconnection method to recover images on server.

Now my problem is that it takes too long to load.

so I want to first just to insert null images to all areas and it once the thread retrieves the image even time it updates the field with this image.

thankx.

Familiarize yourself with the "model of the observer:

Model of the observer - Wikipedia

In your case, an observer (or the listener, in BlackBerry speak) will be your user interface element that wants to paint the image.  Initially, you will have null as the reference to the image and your method object will jump to paint.

Later, once that image is downloaded in a separate, thread the thread to notify your user interface via a registered listening method to be informed of this image.  This method will fill your internal reference to the image and call invalidate().

Invalidate() will cause your method object to call.  At this point, the object will notice a reference not null to the image and remove it as expected.

There might be other approaches - is one of the many meanings. It is oriented object and quite effective.

Tags: BlackBerry Developers

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