Bump; the post got held up for 2 days due to moderation. On Jan 30, 4:53 pm, michael <[email protected]> wrote: > Hi, > > I am working on an app that displays photos which are downloaded from > Flickr. I obtain a Bitmap object from a byte array, which in turn is > read from the relevant Flickr URL, as follows: > > Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length); > > The problem is that the resulting bitmap is pixelated and I can't > figure out why. To demonstrate, here is an example of a picture > created via BitmapFactory.decodeByteArray versus the original picture > obtained directly from the relevant Flickr URL: > > http://homepages.inf.ed.ac.uk/s0677975/bad.jpghttp://homepages.inf.ed.ac.uk/s0677975/good.jpg > > Look e.g. at the clouds in the top-left corner to see the difference. > > Can anybody give me a hint as to why this is happening? > > Below are some additional details. The byte array is obtained as > follows; this is based on code from the Photostream app by Romain Guy: > > InputStream in = new BufferedInputStream(url.openStream(), > IO_BUFFER_SIZE); > final ByteArrayOutputStream dataStream = new ByteArrayOutputStream(); > out = new BufferedOutputStream(dataStream, IO_BUFFER_SIZE); > copy(in, out); > out.flush(); > final byte[] data = dataStream.toByteArray(); > > Note that the more direct approach using e.g. > BitmapFactory.decodeStream() does not work; see e.g. the following > discussion for details: > > http://markmail.org/message/m2m3cpkh6ggrvj43#query:BitmapFactory.deco... > > Here is the code I used for writing the bitmap to the JPG file linked > to above, with no compression: > > String filename = "test" ; > ContentValues values = new ContentValues(); > values.put(Images.Media.TITLE, filename); > values.put(Images.Media.DATE_ADDED, System.currentTimeMillis()); > values.put(Images.Media.MIME_TYPE, "image/jpeg"); > > Uri uri = mCtx.getContentResolver().insert > (Images.Media.EXTERNAL_CONTENT_URI, values); > try { > OutputStream outStream = mCtx.getContentResolver().openOutputStream > (uri); > bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outStream); > outStream.flush(); > outStream.close();} catch (FileNotFoundException e) {} > > catch (IOException e) {} > > Any help on this matter would be greatly appreciated. > Thanks and best regards, > Michael.
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