It doesn't seem to be a problem with two lenses.
I had the same error in my app but it worked okay with HTC Incredible
(android2.2, 2 lenses).
I'm still looking for the cause.
If you got the solution, plz post it.

On Mar 9, 6:11 pm, Paolo <[email protected]> wrote:
> Thanks Mark.
> I'll compare my code with yours, to understand where the problem is.
>
> On 8 Mar, 15:17, Mark Murphy <[email protected]> wrote:
>
>
>
>
>
>
>
> > The Nexus S works just fine with camera previews. See:
>
> >https://github.com/commonsguy/cw-advandroid/tree/master/Camera/Previe...
>
> > The first one is just preview, working with the default camera. The
> > second one also takes pictures and will use the FFC on Android 2.3 and
> > newer devices (if there is an FFC), otherwise it will use the default
> > camera.
>
> > On Tue, Mar 8, 2011 at 9:07 AM, Paolo <[email protected]> wrote:
> > > I guess the problem is that Nexus S has two cameras (front and back).
> > > With Froyo I can't manage this situation. I expect that Android use
> > > the back one without problem with the same code I use for Froyo,
>
> > > The startPreview() faild and I don't undestrand why.
>
> > > If I run the same app on a Nexus One with Gingerbread installed, it
> > > works fine... I suppose because N1 has only one camera.
>
> > > Please help me!
>
> > > Paolo
>
> > > On 7 Mar, 18:00, Paolo <[email protected]> wrote:
> > >> Hi there!
> > >> I've tested my app developed with SDK 2.2 as target on a Nexus S with
> > >> Gingerbread. All it goes ok, except the activity that uses the Camera
> > >> hardware to take pictures.
> > >> I don't know what's wrong... :(
> > >> Is there anyone who has had the same problem? Please help me!
>
> > >> Thanks in advance!
>
> > >> This is my logcat:
>
> > >> 03-07 17:47:04.457: ERROR/SecCamera(75): ERR(int
> > >> android::fimc_v4l2_reqbufs(int, v4l2_buf_type, int)):VIDIOC_REQBUFS
> > >> failed
> > >> 03-07 17:47:04.457: ERROR/SecCamera(75): int
> > >> android::SecCamera::startPreview()::828 fail. errno: Out of memory,
> > >> m_camera_id = 0
> > >> 03-07 17:47:04.457: ERROR/CameraHardwareSec(75): ERR(virtual
> > >> android::status_t android::CameraHardwareSec::startPreview()):Fail on
> > >> mSecCamera->startPreview()
> > >> 03-07 17:47:04.460: DEBUG/AndroidRuntime(793): Shutting down VM
> > >> 03-07 17:47:04.460: WARN/dalvikvm(793): threadid=1: thread exiting
> > >> with uncaught exception (group=0x40015560)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793): FATAL EXCEPTION: main
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):
> > >> java.lang.RuntimeException: startPreview failed
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.hardware.Camera.startPreview(Native Method)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> it.visitotuscany.CameraActivity.surfaceChanged(CameraActivity.java:
> > >> 330)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.view.SurfaceView.updateWindow(SurfaceView.java:549)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.view.SurfaceView.dispatchDraw(SurfaceView.java:348)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.view.ViewGroup.drawChild(ViewGroup.java:1644)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.view.ViewGroup.dispatchDraw(ViewGroup.java:1373)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.view.ViewGroup.drawChild(ViewGroup.java:1644)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.view.ViewGroup.dispatchDraw(ViewGroup.java:1373)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.view.View.draw(View.java:6883)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.widget.FrameLayout.draw(FrameLayout.java:357)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.view.ViewGroup.drawChild(ViewGroup.java:1646)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.view.ViewGroup.dispatchDraw(ViewGroup.java:1373)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.view.View.draw(View.java:6883)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.widget.FrameLayout.draw(FrameLayout.java:357)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> com.android.internal.policy.impl.PhoneWindow
> > >> $DecorView.draw(PhoneWindow.java:1862)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.view.ViewRoot.draw(ViewRoot.java:1522)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.view.ViewRoot.performTraversals(ViewRoot.java:1258)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.view.ViewRoot.handleMessage(ViewRoot.java:1859)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.os.Handler.dispatchMessage(Handler.java:99)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.os.Looper.loop(Looper.java:123)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> android.app.ActivityThread.main(ActivityThread.java:3683)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> java.lang.reflect.Method.invokeNative(Native Method)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> java.lang.reflect.Method.invoke(Method.java:507)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> com.android.internal.os.ZygoteInit
> > >> $MethodAndArgsCaller.run(ZygoteInit.java:839)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
> > >> 03-07 17:47:04.468: ERROR/AndroidRuntime(793):     at
> > >> dalvik.system.NativeStart.main(Native Method)
>
> > > --
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>
> > --
> > Mark Murphy (a Commons 
> > Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy
>
> > Android Training Worldwide:http://commonsware.com/training

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