The Bitmap was created in the Java layer: https://github.com/gjtorikian/Earthbound-Battle-Backgrounds/blob/1684ac485c934813f97653d798f16f4c967f4247/src/com/miadzin/livewallpaper/earthbound/EarthboundLiveWallpaper.java#L258
Then, I pass it over to JNI to do some math and pixels manipulation: https://github.com/gjtorikian/Earthbound-Battle-Backgrounds/blob/master/jni/distort_bmp.c#L245 On Sunday, December 9, 2012 11:28:46 PM UTC-8, Romain Guy (Google) wrote: > > How do you allocate the bitmap exactly? > On Dec 9, 2012 7:38 PM, "GJTorikian" <gjtor...@gmail.com <javascript:>> > wrote: > >> 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 <gjtor...@gmail.com> 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/**gjto** >>>>> rikian/Earthbound-Battle-**Backg**rounds/blob/master/src/**com/** >>>>> miadzin/livewallpaper/**earthbou**nd/**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 android-d...@**googlegroups.com >>>> To unsubscribe from this group, send email to >>>> android-developers+**unsubscr...@googlegroups.com >>>> For more options, visit this group at >>>> http://groups.google.com/**group/android-developers?hl=en<http://groups.google.com/group/android-developers?hl=en> >>> >>> >>> >>> >>> -- >>> Romain Guy >>> Android framework engineer >>> roma...@android.com >>> >>> -- >> You received this message because you are subscribed to the Google >> Groups "Android Developers" group. >> To post to this group, send email to >> android-d...@googlegroups.com<javascript:> >> To unsubscribe from this group, send email to >> android-developers+unsubscr...@googlegroups.com <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 post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
