Bir tema özelliği bir stilde nasıl referans alınır?

Question

Aşağıdaki bir sorun var. Satır görünümünü bir listede özelleştirmek istiyorum, ancak şişirme sırasında istisna atılıyor. style.xml kod

parça

<style name="AppTheme.Main">  
    <item name="item_shadowColor">#000000</item>   
</style> 
<style name="item_label">  
    <item name="android:shadowColor">?attr/item_shadowColor</item>   
</style> 

attr.xml

<?xml version="1.0" encoding="utf-8"?> 
<resources> 
    <attr name="item_shadowColor" format="color" /> 
</resources> 

list_item.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:orientation="horizontal" > 

    <TextView 
     android:id="@id/title" 
     style="@style/item_label" 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent"/> 

</LinearLayout> 

Ve istisna

FATAL EXCEPTION: main 
android.view.InflateException: Binary XML file line #7: Error inflating class <unknown> 
    at android.view.LayoutInflater.createView(LayoutInflater.java:606) 
    at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56) 
    at android.view.LayoutInflater.onCreateView(LayoutInflater.java:653) 
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:678) 
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:739) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
    at ru.mts.goodok.adapter.CategoryListAdapter.getView(CategoryListAdapter.java:30) 
    at android.widget.AbsListView.obtainView(AbsListView.java:2052) 
    at android.widget.ListView.makeAndAddView(ListView.java:1820) 
    at android.widget.ListView.fillDown(ListView.java:672) 
    at android.widget.ListView.fillFromTop(ListView.java:732) 
    at android.widget.ListView.layoutChildren(ListView.java:1673) 
    at android.widget.AbsListView.onLayout(AbsListView.java:1882) 
    at android.view.View.layout(View.java:11425) 
    at android.view.ViewGroup.layout(ViewGroup.java:4232) 
    at android.widget.RelativeLayout.onLayout(RelativeLayout.java:925) 
    at android.view.View.layout(View.java:11425) 
    at android.view.ViewGroup.layout(ViewGroup.java:4232) 
    at android.widget.FrameLayout.onLayout(FrameLayout.java:431) 
    at android.view.View.layout(View.java:11425) 
    at android.view.ViewGroup.layout(ViewGroup.java:4232) 
    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1628) 
    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1486) 
    at android.widget.LinearLayout.onLayout(LinearLayout.java:1399) 
    at android.view.View.layout(View.java:11425) 
    at android.view.ViewGroup.layout(ViewGroup.java:4232) 
    at android.widget.FrameLayout.onLayout(FrameLayout.java:431) 
    at android.view.View.layout(View.java:11425) 
    at android.view.ViewGroup.layout(ViewGroup.java:4232) 
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1516) 
    at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2505) 
    at android.os.Handler.dispatchMessage(Handler.java:99) 
    at android.os.Looper.loop(Looper.java:154) 
    at android.app.ActivityThread.main(ActivityThread.java:4945) 
    at java.lang.reflect.Method.invokeNative(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:511) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
    at dalvik.system.NativeStart.main(Native Method) 
Caused by: java.lang.reflect.InvocationTargetException 
    at java.lang.reflect.Constructor.constructNative(Native Method) 
    at java.lang.reflect.Constructor.newInstance(Constructor.java:417) 
    at android.view.LayoutInflater.createView(LayoutInflater.java:586) 
    ... 39 more 
Caused by: java.lang.NumberFormatException: Invalid int: "?2130771972" 
    at java.lang.Integer.invalidInt(Integer.java:138) 
    at java.lang.Integer.parse(Integer.java:375) 
    at java.lang.Integer.parseInt(Integer.java:366) 
    at com.android.internal.util.XmlUtils.convertValueToInt(XmlUtils.java:123) 
    at android.content.res.TypedArray.getInt(TypedArray.java:254) 
    at android.widget.TextView.<init>(TextView.java:829) 
    at android.widget.TextView.<init>(TextView.java:489) 
    ... 42 more 

Neyi yanlış yapıyorum ve bu sorunu nasıl çözebilirim?

Answer 1

sorun çözüldü. Bağdaştırıcı oluşturmak için uygulama bağlamı kullandım, içeriği değiştirdiğimde sorun ortadan kayboldu.

Answer 2

themes.xml dosyasını oluşturmaya çalışın ve aşağıdaki satırları ekleyin.

Themes.xml

<style name="Theme"> 
    <item name="item_shadowColor">@style/item_label</item> 
</style> 

attrs.xml
değiştirin sizin attrs.xml dosyada format="reference".

<?xml version="1.0" encoding="utf-8"?> 
<resources> 
    <attr name="item_shadowColor" format="reference" /> 
</resources> 

styles.xml

<style name="AppTheme.Main">  
    <item name="item_shadowColor">#000000</item>   
</style> 

<style name="item_label">  
    <item name="android:shadowColor">#F240FF</item>   
</style> 

Sonra sonra aşağıdaki gibi TextView için stili tanımlayın:

<TextView 
    android:id="@id/title" 
    style="@style/item_label" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"/>