Android Question How to close/hide CameraEX routine

Hi everybody!

In my project I need to take an undetermined number of photos, I'm using CameraEX class and works fine BUT I have the next error:

** Service (starter) Create **
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
~w:1004,main,231
~w:1004,main,307
~w:1004,main,396
findCamera
null
2
facing: 0, 0
findCamera
0
2
facing: 0, 0
90
~w:1004,main,396
findCamera
null
2
facing: 0, 0
findCamera
0
2
facing: 0, 0
90
cameraexclass_startpreview (B4A line: 114)
cam.StartPreview
java.io.IOException: setPreviewTexture failed
at android.hardware.Camera.setPreviewDisplay(Native Method)
at android.hardware.Camera.setPreviewDisplay(Camera.java:499)
at anywheresoftware.b4a.objects.CameraW.StartPreview(CameraW.java:176)
at de.amberhome.slidemenuexample.cameraexclass._startpreview(cameraexclass.java:1526)
at de.amberhome.slidemenuexample.main._camera1_ready(main.java:983)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:169)
at anywheresoftware.b4a.keywords.Common.CallSub4(Common.java:897)
at anywheresoftware.b4a.keywords.Common.CallSubNew2(Common.java:839)
at de.amberhome.slidemenuexample.cameraexclass._camera_ready(cameraexclass.java:146)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:169)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:153)
at anywheresoftware.b4a.objects.CameraW$2$1.run(CameraW.java:139)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:606)
at dalvik.system.NativeStart.main(Native Method)
java.io.IOException: setPreviewTexture failed

This happens when I use next piece of code, that also works:

Sub RemoveViews
Dim i As Int
For i = Activity.NumberOfViews - 1 To 108 Step -1
Activity.RemoveViewAt(i)
Next
End Sub

I invoke the camera routine from an Imageview control inside a CustomListView, so the user can choose which one could have a photo, that why I must close and open the camera several times. Please help to understand how to close this class wihout errors.
I've uploaded the source code as well.
Thanks to all.
jalvarez