Nobody here able to answer these questions? Propable the GridView is not capable of animating a dynamic dataset? Is there any other layout better suited for the task?
On 10 Jan., 18:11, Moritz Post <[email protected]> wrote: > Hallo group > > First of, let me thank you for all the valuable information i have > found here so far. I am currently investigating the android platform > with my first more elaborate application (like so many of us are doing > here). > > This leads me to a problem which i am currently facing: I am writing > an application which fetches images from the internet and displays > them in a a GridView. The loading process is executed multithreaded, > so that i can fetch multiple images at the same time (using the > concurrency Runnables and ExecutionService). I am displaying > placeholders for the images in the grid while they are loading and > would like to fade-in the image using an animation when they are done > loading. Here is where the problem comes in: > > When playing the fade-in animation, the animation gets cut of as soon > as a new image is done loading and causes a refresh on the Adapter. > Since i have to use an android.widget.BaseAdapter to provide the data > to display in the GridView, the entire GridView gets refreshed when a > new image is loaded and is about to be displayed since I use > BaseAdapter.notifyDataSetChanged()to refresh the GridViews content. > > When an images is done loading it causes a refresh via the notify > method and starts its fade animation. The animation playes fine but is > immediately cut of when another image is done loading and invokes > notifyDataSetChanged() itself, causing a global view refresh and > repopulates the entire view. Of course i don't want to display the > animation everytime the GridView gets refreshed but only the very > first time an image is displayed. > > What i would need is to make the notifyDataSetChanged() not refresh > the entire GridView but only insert/refresh the one new image, leaving > the others in place and playing there animation. Maybe the GridView > and its Adapter is not the right widget for my task though. > > Any help would be greatly appreciated and i am looking forward to > participate on this board. Smile --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Beginners" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -~----------~----~----~----~------~----~------~--~---
