Using camera_id-tag in layout XML forces crash on Nexus 7 (Bug #3032)

Hi Guys,

I created the following layout file:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:custom="http://schemas.android.com/apk/res-auto"
android:id="@+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".VideoActivity" >

<org.opencv.android.JavaCameraView
        android:id="@+id/viewVideo" 
        android:layout_width="match_parent" 
        android:layout_height="match_parent" 
        custom:camera_id="front" 
        custom:show_fps="true" />

</LinearLayout>

Important is the Option custom:camera_id="front". If I run my app on a usual smartphone which has both - front and back camera - my app runs perfectly and uses the front camera. But if I run my application on a Nexus 7 - which has only a front camera - I got the following error:

On Display:
It seems that you devices does not support camera (or it is locked). Application will be closed.

On LogCat:
05-17 09:03:34.997: E/JavaCameraView(4410): Camera #1failed to open: Fail to connect to camera service

As a matter of fact the Nexus 7 only has a front camera, which has the camera-id = 0.
I think instead of opening the camera #1 as front camera in a fixed way the options from Camera.CameraInfo-class should be considered (CAMERA_FACING_BACK, CAMERA_FACING_FRONT). http://developer.android.com/reference/android/hardware/Camera.CameraInfo.html
I mean something like this:
/** * Opens the front camera. * * @return the front camera object or null if none.
*/
public static Camera getCameraInstance(){
// Open front camera:
final CameraInfo cameraInfo = new CameraInfo();
for (int i = 0; i < Camera.getNumberOfCameras(); i++){
Camera.getCameraInfo(i, cameraInfo);
if (cameraInfo.facing == CameraInfo.CAMERA_FACING_FRONT){
return Camera.open(i);
}
}
return null;
}

I also added an Android project which shows this issue.