Hello Romain! I put a background image in view, so I can not draw with the background color.
On Wed, May 29, 2013 at 1:53 AM, Romain Guy <romain...@android.com> wrote: > Erase is working as intended here. You are erasing the window's Canvas, > which is shared by all the Views. If you want to erase to transparent you > should make that View use a drawing cache (setDrawingCacheEnabled()) or a > layer (setLayerType()) but this will come at a cost performance-wise. > Another solution is to simply draw with your background color. > > > On Tue, May 28, 2013 at 8:43 PM, Tiago Braga <tbragamach...@gmail.com>wrote: > >> Hello! >> >> I am starting the studies, and decide to make a little program to draw on a >> white canvas. >> >> I rode one example of android called "FingerPaint" and I noticed >> something: >> When I select the option "Erase", it uses the following method to clean >> up what is on the screen: >> >> mPaint.setXfermode (new PorterDuffXfermode (PorterDuff.Mode.CLEAR)); >> >> It cleans up really, but while you're dragging the screen to clear, is >> appearing black lines. >> >> How do I solve this? >> >> -- >> Atenciosamente, >> Tiago Braga Machado >> >> -- >> -- >> 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 >> --- >> You received this message because you are subscribed to the Google Groups >> "Android Developers" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to android-developers+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> >> > > > > -- > Romain Guy > Android framework engineer > romain...@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-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 > --- > You received this message because you are subscribed to the Google Groups > "Android Developers" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to android-developers+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- Atenciosamente, Tiago Braga Machado -- -- 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 --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
