Here is what the documentation says: "The current implementation necessitates that the reused bitmap be mutable and of the same size as the source content."
Make sure the bitmap you are reusing is mutable. On Sat, Aug 24, 2013 at 12:07 AM, danik <danik...@gmail.com> wrote: > My app decodes a lot of bitmaps from sd card, so I want to reuse existing > bitmaps to decrease GC work. I see examples from Android > Training<http://developer.android.com/training/displaying-bitmaps/manage-memory.html#inBitmap>and > this > video <http://www.youtube.com/watch?v=rsQet4nBVi8> > <http://savefrom.net/?url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DrsQet4nBVi8&utm_source=chromelite&utm_medium=extensions&utm_campaign=link_modifier>and > it works perfect for > BitmapFactory.decodeResource<http://developer.android.com/reference/android/graphics/BitmapFactory.html#decodeResource%28android.content.res.Resources,%20int,%20android.graphics.BitmapFactory.Options%29>, > but not for > BitmapFactory.decodeFile<http://developer.android.com/reference/android/graphics/BitmapFactory.html#decodeFile%28java.lang.String,%20android.graphics.BitmapFactory.Options%29>. > I use next code: > > private void testBitmapReusing() { > BitmapFactory.Options options = newOptions(); > Bitmap bitmap = decode(options); > > options.inBitmap = bitmap; > bitmap = decode(options); > } > > private BitmapFactory.Options newOptions() { > BitmapFactory.Options options = new BitmapFactory.Options(); > options.inSampleSize = 1; > options.inMutable = true; > return options; > } > > private Bitmap decode(BitmapFactory.Options options) { > return BitmapFactory.decodeFile("/mnt/sdcard/sun.jpg", options); > // return BitmapFactory.decodeResource(getResources(), > R.drawable.sun, options); > } > > Commented code (BitmapFactory.decodeResource) works as expected, it > decodes new bitmap using existing bitmap. But uncommented code > (BitmapFactory.decodeFile) doesn't decode new bitmap. It just writes to log > message "E/BitmapFactory: Unable to decode stream: > java.lang.IllegalArgumentException: Problem decoding into existing bitmap" > > So where is my mistake? > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to android-developers@googlegroups.com > To unsubscribe from this group, send email to > android-developers+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Android Developers" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to android-developers+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > -- Romain Guy Android framework engineer romain...@android.com -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
