you can also set the density on the canvas see this: http://stackoverflow.com/questions/5014882/drawing-a-bitmap-on-a-canvas-got-scaled
On Monday, January 28, 2013 5:18:21 PM UTC+2, cosminr wrote: > > Unfortunately, the createBitmap() method which accepts DisplayMetrics was > added in API level 17 and I need to support a much lower API level. I tried > to set the density by passing the DisplayMetrics.densityDpi to > Bitmap.setDensity(int) and the problem still persists. > > On Monday, January 28, 2013 4:38:16 PM UTC+2, Piren wrote: >> >> I think its actually the Bitmap's fault... Bitmap.CreateBitmap can also >> get DisplayMatrics as a variable, try that with your device's >> DisplayMatrics (I'm guessing it's High, while the default is something >> lower, thus causing the fuzziness) >> >> On Monday, January 28, 2013 12:48:21 PM UTC+2, cosminr wrote: >>> >>> Hi, I am writing a custom view and for optimization purposes, I draw >>> some static part of the view in a Bitmap. Unfortunately, the quality of the >>> rendering when using an offscreen bitmap is noticeably less compared to >>> rendering into the view's canvas bitmap. Here are two screenshots showing >>> the difference >>> >>> Rendering into view's Canvas: >>> >>> >>> <https://lh5.googleusercontent.com/-wSjtLmhUgz8/UQZV96LTo6I/AAAAAAAAAEM/r9saff_8dlM/s1600/01_view_canvas.png> >>> Rendering into a Bitmap Canvas >>> >>> >>> <https://lh3.googleusercontent.com/-jVuFcXhAf7g/UQZWK7NBNfI/AAAAAAAAAEU/0AfCGfQMudU/s1600/02_bitmap_canvas.png> >>> The difference is most noticeable at the horizontal black line. >>> The anti-aliasing algorithm seems to affect more pixels (is wider). >>> >>> The drawing code is the same in both cases, and the offscreen canvas is >>> created like this >>> >>> final Bitmap tempBitmap = Bitmap.createBitmap(getWidth(), >>> getHeight(), Bitmap.Config.ARGB_8888); >>> final Canvas tempCanvas = new Canvas(tempBitmap); >>> >>> Any ideas on how to get the same rendering in the offscreen canvas as in >>> the view's ? >>> >>> Thank you >>> >> -- -- 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, send email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
