Barcode scanner module crash on Android 4.1

I've been trying to implement the Ti Barcode Scanner module into my android app but it keeps crashing when I call the Barcode.capture() method. I tested it on both the emulator and the device itself with the same results.

I am using Titanium 2.1.1.GA and Android 4.1. I made a completely fresh project and used the example code that's included with the module to rule out any errors with my app code. When I run the same code on Android 2.2 and it works fine.

The stack trace seems to show that the error has something to do with zxing, but I am not exactly sure. If anyone could give me a hand with this I would really appreciate it!

Here is the stack trace when the error occurs (after tapping the scan code button in the example):

[ERROR][TiApplication(  743)] (main) [4543,4543] Sending event: exception on thread: main msg:android.content.res.Resources$NotFoundException: String resource ID #0x0; Titanium 2.1.1,2012/07/27 14:01,0fd84a2
[ERROR][TiApplication(  743)] android.content.res.Resources$NotFoundException: String resource ID #0x0
[ERROR][TiApplication(  743)]   at android.content.res.Resources.getText(Resources.java:229)
[ERROR][TiApplication(  743)]   at android.content.res.Resources.getString(Resources.java:313)
[ERROR][TiApplication(  743)]   at android.content.Context.getString(Context.java:292)
[ERROR][TiApplication(  743)]   at com.google.zxing.client.android.CaptureActivity.displayFrameworkBugMessageAndExit(CaptureActivity.java:791)
[ERROR][TiApplication(  743)]   at com.google.zxing.client.android.CaptureActivity.initCamera(CaptureActivity.java:780)
[ERROR][TiApplication(  743)]   at com.google.zxing.client.android.CaptureActivity.surfaceCreated(CaptureActivity.java:477)
[ERROR][TiApplication(  743)]   at android.view.SurfaceView.updateWindow(SurfaceView.java:543)
[ERROR][TiApplication(  743)]   at android.view.SurfaceView.access$000(SurfaceView.java:81)
[ERROR][TiApplication(  743)]   at android.view.SurfaceView$3.onPreDraw(SurfaceView.java:169)
[ERROR][TiApplication(  743)]   at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:671)
[ERROR][TiApplication(  743)]   at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1818)
[ERROR][TiApplication(  743)]   at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:998)
[ERROR][TiApplication(  743)]   at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4212)
[ERROR][TiApplication(  743)]   at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
[ERROR][TiApplication(  743)]   at android.view.Choreographer.doCallbacks(Choreographer.java:555)
[ERROR][TiApplication(  743)]   at android.view.Choreographer.doFrame(Choreographer.java:525)
[ERROR][TiApplication(  743)]   at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
[ERROR][TiApplication(  743)]   at android.os.Handler.handleCallback(Handler.java:615)
[ERROR][TiApplication(  743)]   at android.os.Handler.dispatchMessage(Handler.java:92)
[ERROR][TiApplication(  743)]   at android.os.Looper.loop(Looper.java:137)
[ERROR][TiApplication(  743)]   at android.app.ActivityThread.main(ActivityThread.java:4745)
[ERROR][TiApplication(  743)]   at java.lang.reflect.Method.invokeNative(Native Method)
[ERROR][TiApplication(  743)]   at java.lang.reflect.Method.invoke(Method.java:511)
[ERROR][TiApplication(  743)]   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
[ERROR][TiApplication(  743)]   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
[ERROR][TiApplication(  743)]   at dalvik.system.NativeStart.main(Native Method)
[ERROR][AndroidRuntime(  743)] FATAL EXCEPTION: main
[ERROR][AndroidRuntime(  743)] android.content.res.Resources$NotFoundException: String resource ID #0x0
[ERROR][AndroidRuntime(  743)]  at android.content.res.Resources.getText(Resources.java:229)
[ERROR][AndroidRuntime(  743)]  at android.content.res.Resources.getString(Resources.java:313)
[ERROR][AndroidRuntime(  743)]  at android.content.Context.getString(Context.java:292)
[ERROR][AndroidRuntime(  743)]  at com.google.zxing.client.android.CaptureActivity.displayFrameworkBugMessageAndExit(CaptureActivity.java:791)
[ERROR][AndroidRuntime(  743)]  at com.google.zxing.client.android.CaptureActivity.initCamera(CaptureActivity.java:780)
[ERROR][AndroidRuntime(  743)]  at com.google.zxing.client.android.CaptureActivity.surfaceCreated(CaptureActivity.java:477)
[ERROR][AndroidRuntime(  743)]  at android.view.SurfaceView.updateWindow(SurfaceView.java:543)
[ERROR][AndroidRuntime(  743)]  at android.view.SurfaceView.access$000(SurfaceView.java:81)
[ERROR][AndroidRuntime(  743)]  at android.view.SurfaceView$3.onPreDraw(SurfaceView.java:169)
[ERROR][AndroidRuntime(  743)]  at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:671)
[ERROR][AndroidRuntime(  743)]  at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1818)
[ERROR][AndroidRuntime(  743)]  at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:998)
[ERROR][AndroidRuntime(  743)]  at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4212)
[ERROR][AndroidRuntime(  743)]  at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
[ERROR][AndroidRuntime(  743)]  at android.view.Choreographer.doCallbacks(Choreographer.java:555)
[ERROR][AndroidRuntime(  743)]  at android.view.Choreographer.doFrame(Choreographer.java:525)
[ERROR][AndroidRuntime(  743)]  at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)

I found what the problem was and a workaround!

For anyone else having issues with the Barcode Scanner module on the Nexus 7 here's what seems to be the real issue. The Nexus 7 doesn't have a rear facing camera only a front facing one. The android OS thinks that if a device doesn't have a rear camera it just doesn't have a camera at all, and it apparently won't check for a front one if a rear one isn't found.

So if you need to get the barcode scanning working on the Nexus 7, it is just a matter of going into the timodule.xml file and adding android:required='false' to any line that says uses-feature or uses-permission for the camera. Then you'll need to create some kind of check for the nexus 7 and put this line Barcode.useFrontCamera = true; when you declare your Barcode scanner.

I may have it slightly easier than some with this problem since I am developing my app exclusively for the nexus 7, but I thought I would follow up with my findings all the same.