The canvas drawing into the live wallpaper is not 4444; the default is 565, which yes will result in banding. You can change the desired format with the SurfaceHolder API.
http://developer.android.com/reference/android/view/SurfaceHolder.html#setFormat(int) <http://developer.android.com/reference/android/view/SurfaceHolder.html#setFormat(int)> On Tue, Feb 22, 2011 at 6:48 AM, allandt bik-elliott (thefieldcomic.com) < [email protected]> wrote: > the problem afaik is that the bitmap used in the canvas is argb_4444 which > has quite a shallow pool of colours to choose from and to get a decent > gradient you need argb_8888 or a decent amount of dithering - neither of > which i'm achieving > > best > a > > > On 14 February 2011 23:13, Mark <[email protected]> wrote: > >> I am also experiencing this issue. The code I am using to apply a gradient >> is as follows... >> >> Canvas DestinationCanvas = new Canvas(); >> DestinationCanvas.setBitmap(DestinationBitmap); >> //Gradient is going from very transparent black to fully black at the >> bottom >> GradientDrawable grad = new GradientDrawable(Orientation.TOP_BOTTOM, new >> int[]{0x02000000, 0x2a000000, 0x5b000000, 0x90000000, 0xc9000000, >> 0xcc000000}); >> grad.setBounds(0, 0, DestinationBitmap.getWidth(), RequiredHeight); >> grad.draw(DestinationCanvas); >> >> >> Calling grad.setDither(true) or setFilter(true) does not help. >> >> Regards, >> Mark England >> >> -- >> 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 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 > -- Dianne Hackborn Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. 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
