android – 更改首选项类别标签颜色背景

我想改变偏好类别bakcgorund的颜色.在我的带有首选项的xml中,我有以这种方式键入的类别：

<PreferenceCategory android@R_61_6964@="Synchronization"> ... </PreferenceCategory>

我正在尝试使用Xml属性更改背景：

android:widgetLayout="@style/PreferenceCategory"

我的styles.xml中的代码如下所示：

<resources>
<style name="PreferenceCategory">
    <item name="android:BACkground">@color/my_blue</item>
</style>
</resources>

但它不能正常工作.我有致命的例外：

08-13 01:43:09.111: WARN/dalvikvm(1329): threadid=1: thread exiTing with uncaught exception (group=0x40015560)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329): FATAL EXCEPTION: main
08-13 01:43:09.141: ERROR/AndroidRuntime(1329): android.content.res.resources$NotFoundException: resource ID #0x7f090006
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.content.res.resources.getValue(resources.java:892)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.content.res.resources.loadXmlresourceParser(resources.java:1869)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.content.res.resources.getLayout(resources.java:731)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.view.LayoutInflater.inflate(LayoutInflater.java:318)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.preference.Preference.onCreateView(Preference.java:416)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.preference.Preference.getView(Preference.java:389)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.preference.PreferenceGroupAdapter.getView(PreferenceGroupAdapter.java:221)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.widget.AbsListView.obtainView(AbsListView.java:1418)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.widget.ListView.makeAndAddView(ListView.java:1745)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.widget.ListView.fillDown(ListView.java:670)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.widget.ListView.fillFromTop(ListView.java:727)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.widget.ListView.layoutChildren(ListView.java:1598)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.widget.AbsListView.onLayout(AbsListView.java:1248)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.view.View.layout(View.java:7175)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.widget.RelativeLayout.onLayout(RelativeLayout.java:912)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.view.View.layout(View.java:7175)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.widget.FrameLayout.onLayout(FrameLayout.java:338)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.view.View.layout(View.java:7175)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.widget.FrameLayout.onLayout(FrameLayout.java:338)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.view.View.layout(View.java:7175)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.view.ViewRoot.performTraversals(ViewRoot.java:1140)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.view.ViewRoot.handlemessage(ViewRoot.java:1859)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.os.Handler.dispatchmessage(Handler.java:99)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.os.Looper.loop(Looper.java:123)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at android.app.ActivityThread.main(ActivityThread.java:3647)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at java.lang.reflect.Method.invokeNative(Native Method)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at java.lang.reflect.Method.invoke(Method.java:507)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
08-13 01:43:09.141: ERROR/AndroidRuntime(1329):     at dalvik.system.NativeStart.main(Native Method)

当我将颜色形式@ color / my_blue更改为某些十六进制代码时,我有同样的致命异常.

我知道我可以在AndroidManifest中使用我的首选项活动这个xml属性：

android:theme="@style/PreferencesTheme"

但它会改变我所有偏好活动的背景颜色.我可以通过哪种方式更改首选项部分的属性？