I've got a custom View in my application which fills the entire
In most cases, when I want to refresh the control I call invalidate()
without any parameters.
However, in certain circumstances, where I'm only changing a small
area of the control, I call invalidate(Rect) to avoid redrawing the
entire screen. This is important because in these situations I need
the update to be as fast as possible.
This seems to work fine, however, when I enable hardware acceleration
in Honeycomb (i.e. set android:hardwareAccelerated="true"in
AndroidManifest.xml), the partial redraw does not seem to work.
This can be seen if I do Log.d("FOO", canvas.getClipBounds()) in my
onDraw() method; the output simply shows that the whole control is
being updated, whereas with hardware acceleration disabled, I get the
correct region being output.
Is there any way to make partial invalidation work when using hardware
Many thanks, Matt
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to email@example.com
To unsubscribe from this group, send email to
For more options, visit this group at