Re: [android-developers] BitmapFactory.Options inTempStorage

On Wed, Apr 25, 2012 at 11:25:51AM -0600, Justin Anderson wrote:
> On Wed, Apr 25, 2012 at 11:15 AM, Jim Graham <spooky130u@gmail.com> wrote:
>
> > While working on trying to squeeze in as much space for processing
> > bitmaps in my app, I noticed this method, and from what I've read,
> > believe it might help. What I have not found, however, is a real (and
> > clear) description of what it does, and how to best use it.
> >
> > The dev guide page suggests using it to create about 15 kB of temp
> > space. Examples I've seen from this list in the past suggest the
> > same, even for as much as 9 MB bitmaps. 15 kB temp space for 9 MB
> > bitmaps makes no sense to me, so I'm clearly missing something.

> I don't know for sure, but I would assume that is because it doesn't decode
> the entire 9 MB image at once...

Ok, I could assume that as well (and I more or less did). But I prefer
actual documentation over assumptions. And that was only one part of my
question. Every post I read where this was used involved using it to
avoid out of memory errors from creating huge bitmaps. But the huge
bitmap is still being created, right? So ultimately, how does this help
prevent that? Does it process and then release (free, etc.) the memory
used by the byte[] array one chunk at a time? Is that one reason why the
temp space size is set so low? How much (in terms of the relative size
of the bitmaps and the data[] array) extra memory does this make
available---memory that I can use in processing the bitmap(s)?

Or should I just *assume* that it'll do whatever I want it to do,
whenever I want it to do it?

So once again, I ask:

> > Can someone please either explain it, or point me to a page that
> > does?

Thanks,
--jim

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