hi, thank you for help. but the background still black. On 4月3日, 上午12時05分, Justin Anderson <[email protected]> wrote: > First, you should use ARGB_8888... ARGB_4444 is > deprecated:http://developer.android.com/reference/android/graphics/Bitmap.Config... > > Next, here is how to do it: > > temp = Bitmap.createBitmap(thisWidth, thisHeight, Config.ARGB_8888); > > //Clear the canvas > Canvas canvas = new Canvas(temp); > > Paint transPainter = new Paint(); > transPainter.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR)); > > canvas.DrawRect(0, 0, temp.Width, temp.Height, transPainter); > > Hope that helps... > > Thanks, > Justin Anderson > MagouyaWare Developerhttp://sites.google.com/site/magouyaware > > > > On Mon, Apr 2, 2012 at 9:54 AM, Perry <[email protected]> wrote: > > hi, > > > I used following method to create a canvas. > > > temp = Bitmap.createBitmap(thisWidth, thisHeight, Config.ARGB_4444); > > Canvas thisCanvas = new Canvas(temp); > > > I don't know why the canvas has a black background. How to create a > > Transparent background for use? > > > Thanks a lot! > > > -- > > 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
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