Bitmap is mutable, because I decode it with option inMutable=true. Bitmaps have same size, because I decode the same file. But your answer forces me to read docs more carefully and I realize my fail! The docs says: The source content must be in* jpeg or png* format (whether as a resource or as a stream) OMG! My images have GIF format.
By the way thanks! суббота, 24 августа 2013 г., 11:28:33 UTC+3 пользователь Romain Guy (Google) написал: > > 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 <[email protected] > <javascript:>>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 >> [email protected]<javascript:> >> To unsubscribe from this group, send email to >> [email protected] <javascript:> >> 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 [email protected] <javascript:>. >> For more options, visit https://groups.google.com/groups/opt_out. >> > > > > -- > Romain Guy > Android framework engineer > [email protected] <javascript:> > -- You received this message because you are subscribed to the Google Groups "Android Developers" 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-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 [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
