android - 更改偏好类别标签颜色背景

Question

我想更改偏好类别 bakcgorund 的颜色。在带有首选项的 xml 中，我以这种方式输入了类别:

<PreferenceCategory android:title="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。我有致命的异常(exception):

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 更改为一些十六进制代码时，我遇到了同样的致命异常。

我知道我可以在 AndroidManifest 中为我的偏好 Activity 使用这个 xml 属性:

android:theme="@style/PreferencesTheme"

但是它改变了我所有偏好 Activity 的背景颜色。我可以通过哪些方式更改首选项部分的属性？

Answer 1

对我来说，这是可行的:

例如 ListSeparator 项目:

在 styles.xml 中

<style name="ListSeparator">
<item name="android:background">@drawable/status_bar</item>
<item name="android:layout_width">match_parent</item>
<item name="android:layout_height">25dip</item>
<item name="android:textStyle">bold</item>
<item name="android:textColor">@color/black</item>
<item name="android:textSize">14sp</item>
<item name="android:gravity">center_vertical</item>
<item name="android:paddingLeft">5sp</item>
</style>

<color name="custom_theme_color">#e6e6e6</color>

<style name="CustomTheme" parent="android:Theme.Light.NoTitleBar">
<item name="android:windowBackground">@color/custom_theme_color</item>
<item name="android:colorBackground">@color/custom_theme_color</item>
<item name="android:listSeparatorTextViewStyle">@style/ListSeparator</item>
</style>

然后，在 AndroidManifest.xml 中:

<activity
android:name="MyActivityPreference"
android:theme="@style/CustomTheme" >
</activity>

或查看此线程: https://stackoverflow.com/a/5564943/471690