[android-developers] Re: System Bar height on tablet devices

I don't know how to get that. That said, I've never needed it. The
dimensions that OpenGL games implemented using GLSurfaceView are
supposed to draw themselves in are passed to the game's renderer in
this method:
http://developer.android.com/reference/android/opengl/GLSurfaceView.Renderer.html#onSurfaceChanged%28javax.microedition.khronos.opengles.GL10,%20int,%20int%29

Those values will have already had anything outside the viewable area
subtracted from them.

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On May 28, 3:20 pm, Jason <jason.poli...@gmail.com> wrote:
> OK.. I tried replying to this thread:
>
> http://groups.google.com/group/android-developers/browse_thread/threa...
>
> But Google Groups seems to have lost that email :/, so trying a new
> post.
>
> In the afore-mentioned thread, Dianne talks about not using
> getHeight()/getWidth() for UI layout, which I'll assume is good
> advice, but my problem is bootstrapping an OpenGL surface view
> (specifically the viewport) and for that I NEED to know the height of
> the System Bar as it's currently throwing everything off.  That is, in
> order to scale the scene to fit all devices I need to know the
> dimensions of the screen, but because the height is an (from
> DisplayMetrics) is an absolute height including the System Bar, all
> the graphics at the top of the scene are being truncated because the
> VIEWABLE area is not the same as the screen height.
>
> I have followed the advice of Chris Pruett here:http://youtu.be/cdvaPyq_eBU?t=8m48s,
> and here:  http://code.google.com/p/replicaisland/source/browse/trunk/src/com/re...
> (line 128)
>
> And in so doing now need to be able to deduct the height of the system
> bar to be able to accurately scale the opengl scene to match the
> device.
>
> Anyone got any clue how I can determine the height (in pixels) of the
> System Bar?  And if the answer is "you can't", that's fine but how do
> I then set the viewport in an opengl scene to the correct height?
> (understanding that I have to know the height BEFORE the viewport is
> set because I will have already computed the scale factors as per
> Chris Pruett's approach)
>
> Thanks!

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