Wallpapers are larger than the screen, you can query the size the wallpaper should have by using the WallpaperManager API.
On Thu, Jun 2, 2011 at 4:11 PM, Spooky <[email protected]> wrote: > I've done some testing, reading, testing, reading, testing, > reading, and so on, since last night's post, and I have some > updates to add. Perhaps this will be enough information for > someone to be able to help me figure out what's going wrong (at > least, I really hope so!). > > I've added code to check the display density > (int odpi = dm.densityDpi;) and, later, changed the code for > resizing the image and added code to set its density to that > of the display: > > Bitmap resizedBitmap = > Bitmap.createScaledBitmap(image,newx,newy,false); > resizedBitmap.setDensity(odpi); > > where newx and newy are calculated by multiplying the scale > factor (set to the same for x and y to preserve the aspect ratio) > by the original image's width and height, respectively. > > As I added these changes, one by one, I saw no change at all in > the wallpaper it produced. I then added code to clear the > wallpaper, and commented out the code that added it back as a > test. I got a default wallpaper (yuck). So I added back the > code to set the wallpaper and it did so again, but still > (obviously) no change.... > > So I started setting the desired size and density to absurd > values (insanely high, insanely low, etc.). It was when I set > the size VERY low that I discovered something: the image *IS* > being resized...TWICE. The re-resized image was pixelated to > hell and back....resetting it to a more reasonable test size got > rid of that, and it looked "normal" (for low-res) again. > > After the changes, tests, etc., the new code is as follows---again, > indentation is reduced for readability: > > --------------------------- CUT HERE --------------------------- > > // load and resize the original image > Bitmap image = BitmapFactory.decodeResource(getResources(), > mImageIds[info.position]); > > // original image size == w,h > int w = image.getWidth(); > int h = image.getHeight(); > > // get display size in pixels > Display display = getWindowManager().getDefaultDisplay(); > DisplayMetrics dm = new DisplayMetrics(); > display.getMetrics(dm); > int nW = dm.widthPixels; > int nH = dm.heightPixels; > int odpi = dm.densityDpi; > > // I thought this might work better...it didn't. > // int nW = manager.getDesiredMinimumWidth(); > // int nH = manager.getDesiredMinimumHeight(); > > // Calculate the scale factor > float sW = (nW) / w; > float sH = (nH) / h; > > // do NOT fsck with the aspect ratio: make sure we scale at 1:1 > if (sW > sH) sW = sH; > if (sH > sW) sH = sW; > > // Now that we have our new scale ratio that protects > // the aspect ratio, multiply it by the original dimens > // to get the NEW image size > int newx = (int) (sW * w); > int newy = (int) (sH * h); > > // scale the image by the calculated scale factor > Bitmap resizedBitmap = > Bitmap.createScaledBitmap(image,newx,newy,false); > resizedBitmap.setDensity(odpi); > > // Load the resized image as wallpaper > try { > manager.clear(); // test... > manager.setBitmap(resizedBitmap); > } catch (IOException e) { > e.printStackTrace(); > } > > --------------------------- CUT HERE --------------------------- > > > It's being resized by my code first. And then, as it's applied > as wallpaper, it's being stretched to a point where it no longer > fits on the screen, and only about 1/3 of the image is actually > shown. It is NOT carried over into the next display, either. > > It's the same image, resized first by my code, and then > resized AGAIN by something else, which then sets the > same fragment of the image as the wallpaper on each > display screen. > > Can anyone please help me out here? > > Later, > --jim > > -- > 73 DE N5IAL (/4) | DMR: So fsck was originally called > [email protected] | something else. > < Running FreeBSD 7.0 > | Q: What was it called? > ICBM / Hurricane: | DMR: Well, the second letter was different. > 30.44406N 86.59909W | -- Dennis M. Ritchie, Usenix, June 1998. > > -- > 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 > -- Romain Guy Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support. All such questions should be posted on public forums, where I and others can see and answer them -- 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
