我有两个问题：
我已经在钛安卓应用程序中集成了ti.barcode模块，它正确地扫描条形码，但是当扫描仪窗口打开并且我点击菜单时，会出现强制关闭警报 - ＆gt;设置。我想在低光条件下扫描时打开手电筒。知道设置菜单崩溃的原因吗？
我也尝试过创建一个钛金属安卓模块来打开/关闭手电筒，它完美无缺。但是当我在应用程序中集成时打开手电筒而不是启动条形码扫描仪时会出现一条消息（“Android相机正面临一些问题，请重新启动设备”）。这是因为相机的两个实例是打开的。我无法更改ti.barcode模块代码，因为它是付费模块。有什么建议可以解决这个问题吗？
点击设置链接后的Stacktrace。
W/dalvikvm( 659): threadid=1: thread exiting with uncaught exception (group=0x40015560)
E/TiUncaughtHandler( 659): (main) [31506,94204] Sending event: exception on thread: main msg:android.content.ActivityNotFoundException: Unable to find explicit activity class {regiondo.anbieter/com.google.zxing.client.android.PreferencesActivity}; have you declared this activity in your AndroidManifest.xml?; Titanium 1.7.2,2011/07/21 09:36,97c3689
E/TiUncaughtHandler( 659): android.content.ActivityNotFoundException: Unable to find explicit activity class {regiondo.anbieter/com.google.zxing.client.android.PreferencesActivity}; have you declared this activity in your AndroidManifest.xml?
E/TiUncaughtHandler( 659): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1404)
E/TiUncaughtHandler( 659): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1378)
E/TiUncaughtHandler( 659): at android.app.Activity.startActivityForResult(Activity.java:2827)
E/TiUncaughtHandler( 659): at android.app.Activity.startActivity(Activity.java:2933)
E/TiUncaughtHandler( 659): at com.google.zxing.client.android.CaptureActivity.onOptionsItemSelected(CaptureActivity.java:336)
E/TiUncaughtHandler( 659): at android.app.Activity.onMenuItemSelected(Activity.java:2205)
E/TiUncaughtHandler( 659): at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:748)
E/TiUncaughtHandler( 659): at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:143)
E/TiUncaughtHandler( 659): at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:855)
E/TiUncaughtHandler( 659): at com.android.internal.view.menu.IconMenuView.invokeItem(IconMenuView.java:532)
E/TiUncaughtHandler( 659): at com.android.internal.view.menu.IconMenuItemView.performClick(IconMenuItemView.java:122)
E/TiUncaughtHandler( 659): at android.view.View$PerformClick.run(View.java:9080)
E/TiUncaughtHandler( 659): at android.os.Handler.handleCallback(Handler.java:587)
E/TiUncaughtHandler( 659): at android.os.Handler.dispatchMessage(Handler.java:92)
E/TiUncaughtHandler( 659): at android.os.Looper.loop(Looper.java:123)
E/TiUncaughtHandler( 659): at android.app.ActivityThread.main(ActivityThread.java:3647)
E/TiUncaughtHandler( 659): at java.lang.reflect.Method.invokeNative(Native Method)
E/TiUncaughtHandler( 659): at java.lang.reflect.Method.invoke(Method.java:507)
E/TiUncaughtHandler( 659): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
E/TiUncaughtHandler( 659): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
E/TiUncaughtHandler( 659): at dalvik.system.NativeStart.main(Native Method)