Hi, OnDraw gets a Canvas object passed to it. You basically draw directly to this object (Use Canvas's methods to do the drawing). However, you won't be double buffering then so you may see some flicker.
-niko On Nov 4, 5:33 am, Latha Shivanna <[email protected]> wrote: > > You can directly draw onto surface bound with canvas passed in in your > > draw handler. You don't have to always first draw into bitmap then > > copy from bitmap to surface. > > can you please give me some sample code for the same? It would be > really helpful. Or any references where i can have a look at for this > draw handler example? > > -Latha > > On Wed, Nov 4, 2009 at 8:50 AM, Westermann Fu <[email protected]> wrote: > > You can directly draw onto surface bound with canvas passed in in your > > draw handler. You don't have to always first draw into bitmap then > > copy from bitmap to surface. > > > In fact, no matter what strategy you use you have not really drawn > > onto screen framebuffer directly, the last action is composing done by > > surfaceflinger service which sit in native layer but it only export > > limited method you can access. I think directly accessing /dev/ > > graphics/fb0 is not recommand by android platform. > > > On Nov 4, 12:35 am, Latha Shivanna <[email protected]> wrote: > >> I need some 2D apis. can anybody suggest something? > > >> Are there any ways to display a buffer on screen in native layer? I am > >> aware of using some ioctl calls on /dev/graphics/fb0.(But it needs > >> root access) > > >> Please do advise. > > >> -Latha > > >> On Tue, Nov 3, 2009 at 7:12 PM, sham shamcs <[email protected]> wrote: > >> > you can use opengl also > > >> > On Tue, Nov 3, 2009 at 5:54 PM, Latha Shivanna <[email protected]> > >> > wrote: > > >> >> Hii All > > >> >> Can anybody please tell me how can we display a buffer on screen? > > >> >> Currently I create a bitmap using Bitmap's CreateBitmap() and render > >> >> it on screen using canvas' drawBitmap(). > > >> >> Is there any other way of doing this in Java layer? > > >> >> Please do share your thoughts. > > >> >> thanks in advance > >> >> Latha > > >> >> -- > >> >> 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 > > > -- > > 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
