Sunday, July 24, 2011

Re: [android-developers] Re: Listbox with ImageView and heapspace

Thank you, I will give it a try.

On 24/07/2011 8:16 PM, Streets Of Boston wrote:
> Purge the queue that is filled by your background process.
>
> List item views (and imageviews within your list item views) are
> recycled. Remember for which list-item (or image-view) the
> background-thread is loading a bitmap (you'll know this in the
> adapter's getView method). Later, as soon as the same image-view is
> re-used for another bitmap, look-up the loading of the bitmap that was
> previously to be assigned to the image-view and remove this bitmap
> from the cache. For good measure, call 'recycle()' on it. Then start
> load the new bitmap for the recycled image-view.
>
> Instead of immediately purging unused bitmap, you may want to hold on
> to them a little longer so that your background doesn't need to
> re-load the same image over and over again. However, this will
> increase the size of your queue. You'll have to put a limit on the
> queue (never more than 'x' bitmaps in the queue).
>
> Also be sure to load bitmaps that are at most slightly larger than
> your image-view (BitmapFactory.Options.inSampleSize > 1). Don't load
> full-sized bitmap if it's not absolutely necessary.
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