Sure, but why do I need to do this in the first place? In native JNI code I am modifying each pixel directly. Pre-ICS I did not need to "blank out" the bitmap.
On Sunday, December 9, 2012 3:15:05 PM UTC-8, Romain Guy (Google) wrote: > > Instead of writing a loop like this you can just call Bitmap.eraseColor(). > It's much more efficient. > > > On Sun, Dec 9, 2012 at 11:55 AM, GJTorikian <[email protected]<javascript:> > > wrote: > >> All right, so after days I finally figured it out. >> >> After creating my bitmap, I need to set every pixel in Java: >> >> for (int x = 0; x < 254; x++) { >> for (int y =0; y < 254; y++) { >> bmp.setPixel(x, y, Color.argb(255, 0, 0, 0)); >> } >> } >> >> >> The question is: WHY only for ICS? >> >> On Wednesday, December 5, 2012 4:07:38 PM UTC-8, GJTorikian wrote: >>> >>> Hi there— >>> >>> I'm making updates to a live wallpaper I've developed. The wallpaper is >>> currently running correctly on a 2.2 device, but NOT on my 4.2 device. >>> >>> On the ICS device, it seems that only the last column is being correctly >>> drawn. For example, in a coordinate system, if my phone is 420 x 720 (not >>> sure of the exact dimensions), then only pixels (420, 0) through (420, 720) >>> are being drawn. The rest is black / transparent. >>> >>> Here's the code I'm using: https://github.com/** >>> gjtorikian/Earthbound-Battle-**Backgrounds/blob/master/src/** >>> com/miadzin/livewallpaper/**earthbound/**EarthboundLiveWallpaper.java#** >>> L243<https://github.com/gjtorikian/Earthbound-Battle-Backgrounds/blob/master/src/com/miadzin/livewallpaper/earthbound/EarthboundLiveWallpaper.java#L243> >>> >>> First, I draw a 256 x 256 bitmap. Then, I use a matrix to scale it. >>> >>> Again, this works fine on a non-ICS device. Another tricky aspect is >>> that I'm using the JNI to do some of the bitmap math, but I still think the >>> problem is in this canvas code somewhere. >>> >>> Thanks for any help! >>> >> -- >> 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 > > > > > -- > 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
