BitmapFactory.Options.inSampleSize not being honored?

Question

I have a photo on disk with dimensions 2560 x 1920. This is often too large to load into memory, so I'm trying to use BitmapFactory.Options.inSampleSize to conserve memory. From the docs:

inSampleSize: If set to a value > 1, requests the decoder to subsample the original image, returning a smaller image to save memory.

This is how I use it:

BitmapFactory.Options optsDownSample = new BitmapFactory.Options();
optsDownSample.inSampleSize = 3;

Bitmap bmp = BitmapFactory.decodeFile(path, optsDownSample);

but the app still sometimes crashes on the last line there, and from logcat I can see it's trying to allocate ~5mb, and I suspect this is because the downsampling is not really being honored.

Anyone else know what could be going on here, am I using inSampleSize incorrectly?

Thanks

It may be that the inSampleSize should be a power of 2? See http://stackoverflow.com/questions/477572/android-strange-out-of-memory-issue/823966#823966 — Torid, Aug 04 '11 at 21:52
Huh could be, the docs just say that powers of two are easier to honor, I will give it a shot, thanks for pointing that out! — user291701, Aug 04 '11 at 22:08
Hhhhmmmm... I was trying to make he comment above an answer but Stackoverflow forced it to be a comment (as it was so sort)? Can you still give me "reputation"? — Torid, Aug 05 '11 at 00:38
Try to post your comment/solution as an answer, maybe he will accept it. — BrainCrash, Aug 05 '11 at 01:52

score 0 · Answer 1 · answered Aug 25 '17 at 06:46

0

I'm also struggling understanding how to use the BitmapFactory.Options, based on all the documentation I've read I believe you are just missing the optsDownSample.inJustDecodeBounds = false; as indicated on the Android Developers site.

Best of lucks!

answered Aug 25 '17 at 06:46

Esteban Sustacha

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BitmapFactory.Options.inSampleSize not being honored?

1 Answers1