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优惠价格暴涨/优惠行为失灵——说明原因。
原标题：PreferenceFragment / PreferenceActivity crashes - cant figure out why

I want to implement a preference screen. So I followed basically the example from the developer docs. When I start the Activity I see the header list, with one header (this part seems to work). But as soon I click this header the Activity crashed with below log.

我搜索了SO和gogle,但找不到关于这一错误的任何进一步信息。

我试图将pvis_appearance_ Screen.xml缩短到一个“BoxP参比项目”。 XML第18条也存在同样的错误。 因此,我猜测,这一错误不在档案中。

My activity class:

public class TrainerPreferenceActivity extends PreferenceActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public void onBuildHeaders(List<Header> target) {
        loadHeadersFromResource(R.xml.preference_headers, target);
    }

    public static class AppearancePrefFragment extends PreferenceFragment {
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.preference_appearance_screen);
        }
    }
}

pvis_headers.xml file:

<?xml version="1.0" encoding="utf-8"?>
<preference-headers
    xmlns:android="http://schemas.android.com/apk/res/android">
    <header android:fragment=".TrainerPreferenceActivity$AppearancePrefFragment"
           android:title="Appearance"
           android:summary="An example of some preferences." />
</preference-headers>

pvis_appearance_ Screen.xml file:

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
    <PreferenceCategory 
        android:title="@string/pref_app_cat_theme">
    </PreferenceCategory>
    <PreferenceCategory 
        android:title="@string/pref_app_cat_background">
        <CheckBoxPreference 
            android:key="@string/pref_app_bg_iscustom_key" 
            android:title="@string/pref_app_bg_iscustom_title"
            android:summary="An example of some preferences."/>
        <CheckBoxPreference 
            android:key="@string/pref_app_bg_hascolor_key" 
            android:title="@string/pref_app_bg_hascolor_title"
            android:summary="An example of some preferences."/>  
        <CheckBoxPreference 
            android:key="@string/pref_app_bg_hasimage_key" 
            android:title="@string/pref_app_bg_hasimage_title"
            android:summary="An example of some preferences."/>
    </PreferenceCategory>
    <PreferenceCategory 
        android:title="@string/pref_app_cat_behavior">
        <CheckBoxPreference 
            android:key="@string/pref_app_orientationisenabled_key" 
            android:title="@string/pref_app_orientationisenabled_title"
            android:summary="An example of some preferences."/>        
        <CheckBoxPreference 
            android:key="@string/pref_app_gestureisenabled_key" 
            android:title="@string/pref_app_gestureisenabled_title"
            android:summary="An example of some preferences."/>
   </PreferenceCategory>
</PreferenceScreen>

LogCat:

04-30 17:22:01.215: E/AndroidRuntime(16775): FATAL EXCEPTION: main 04-30 17:22:01.215: E/AndroidRuntime(16775): java.lang.RuntimeException: Binary XML file line #18: You must supply a layout_width attribute. 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.content.res.TypedArray.getLayoutDimension(TypedArray.java:491) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.ViewGroup$LayoutParams.setBaseAttributes(ViewGroup.java:5318) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.ViewGroup$LayoutParams.(ViewGroup.java:5271) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.AbsListView$LayoutParams.(AbsListView.java:5718) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.AbsListView.generateLayoutParams(AbsListView.java:5355) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.AbsListView.generateLayoutParams(AbsListView.java:86) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.LayoutInflater.inflate(LayoutInflater.java:477) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.preference.Preference.onCreateView(Preference.java:474) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.preference.Preference.getView(Preference.java:451) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.preference.PreferenceGroupAdapter.getView(PreferenceGroupAdapter.java:221) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.AbsListView.obtainView(AbsListView.java:2033) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.ListView.onMeasure(ListView.java:1127) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.View.measure(View.java:12723) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1369) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.LinearLayout.measureVertical(LinearLayout.java:660) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.LinearLayout.onMeasure(LinearLayout.java:553) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.View.measure(View.java:12723) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.FrameLayout.onMeasure(FrameLayout.java:293) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.View.measure(View.java:12723) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1369) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.LinearLayout.measureVertical(LinearLayout.java:660) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.LinearLayout.onMeasure(LinearLayout.java:553) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.View.measure(View.java:12723) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:999) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.LinearLayout.onMeasure(LinearLayout.java:555) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.View.measure(View.java:12723) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.LinearLayout.measureVertical(LinearLayout.java:812) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.LinearLayout.onMeasure(LinearLayout.java:553) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.View.measure(View.java:12723) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.FrameLayout.onMeasure(FrameLayout.java:293) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.View.measure(View.java:12723) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.LinearLayout.measureVertical(LinearLayout.java:812) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.LinearLayout.onMeasure(LinearLayout.java:553) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.View.measure(View.java:12723) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.widget.FrameLayout.onMeasure(FrameLayout.java:293) 04-30 17:22:01.215: E/AndroidRuntime(16775): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2092) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.View.measure(View.java:12723) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1064) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2442) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.os.Handler.dispatchMessage(Handler.java:99) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.os.Looper.loop(Looper.java:137) 04-30 17:22:01.215: E/AndroidRuntime(16775): at android.app.ActivityThread.main(ActivityThread.java:4424) 04-30 17:22:01.215: E/AndroidRuntime(16775): at java.lang.reflect.Method.invokeNative(Native Method) 04-30 17:22:01.215: E/AndroidRuntime(16775): at java.lang.reflect.Method.invoke(Method.java:511) 04-30 17:22:01.215: E/AndroidRuntime(16775): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 04-30 17:22:01.215: E/AndroidRuntime(16775): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 04-30 17:22:01.215: E/AndroidRuntime(16775): at dalvik.system.NativeStart.main(Native Method)

最佳回答

右手,我设立了一个快速测试项目,但我没有能够复制这一错误——在我的银河上显示并做罚款。 你们掌握了什么手段,你们是否尝试过任何其他/策划者?

The only possibly related issue I could find is this style/theming-related one, which seems to pop up every here and there. Have you made any customizations? If so, try running above code as vanilla as possible to see if that makes a difference.

时间：2012-05-01 06:47:01
问题回答

这是因为你提到了你使用的习惯风格,正由优惠屏幕使用,而习俗风格并不继承这些要求的财产。 为了保护你的习惯风格并避免这一问题,确保你的习俗风格具有“传教”和“传教”性质。 阁下:

    <style name="MyListSeperator" parent="android:Widget.Holo.Light.TextView">
        <item name="android:layout_width">match_parent</item>
        <item name="android:layout_height">wrap_content</item>
        ...
    </style>

接着,你走了一步:

    <item name="android:listSeparatorTextViewStyle">@style/MyListSeparator</item>
时间：2013-09-13 13:41:28


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