Android 为什么简单列表项1会自行改变颜色？

我有两个简单列表视图，两个视图上都加载了简单列表视图项1

问题是其中一个文本是黑色的，而另一个文本是浅灰色的。 我认为这个列表视图的样式有默认参数

唯一的区别是第一个在活动中，另一个在片段中。除了文字的颜色，一切都很好。为什么会这样

编辑1：

活动中的代码：

public class Categoria_Divulgacion_Cientifica extends ListActivity {

protected String[] mResumenesDivulgacionCientifica;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_categoria__divulgacion_cientifica);

    // Buscar AdView como recurso y cargar una solicitud.
    AdView adView = (AdView)this.findViewById(R.id.adView);
    AdRequest adRequest = new AdRequest.Builder().build();
    adView.loadAd(adRequest);

    Resources resources = getResources();
    mResumenesDivulgacionCientifica = resources.getStringArray(R.array.titulos_divulgacion_cientifica);

    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1, mResumenesDivulgacionCientifica);
    setListAdapter(adapter);

    final String[] links = getResources().getStringArray(R.array.links_divulgacion_cientifica);

    getListView().setOnItemClickListener(new AdapterView.OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            String content = links[position];

            Intent showContent = new Intent(getApplicationContext(),lectura_view.class);
            showContent.setData(Uri.parse(content));
            startActivity(showContent);
        }

    });

}

片段中的代码：

ublic class Seccion2 extends ListFragment {

protected String[] mNovedades;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

    View rootView = inflater.inflate(R.layout.seccion2, container, false);

    return rootView;
}

@Override
public void onResume() {
    super.onResume();

    // Buscar AdView como recurso y cargar una solicitud.
    AdView adView = (AdView)this.getView().findViewById(R.id.adView);
    AdRequest adRequest = new AdRequest.Builder().build();
    adView.loadAd(adRequest);

    Resources resources = getResources();
    mNovedades = resources.getStringArray(R.array.titulos_novedades);

    ArrayAdapter<String> adapter = new ArrayAdapter<String>       (getActivity().getApplicationContext(),
            android.R.layout.simple_list_item_1, mNovedades);
    setListAdapter(adapter);

    final String[] links = getResources().getStringArray(R.array.links_novedades);

    getListView().setOnItemClickListener(new AdapterView.OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            String content = links[position];

            Intent showContent = new Intent(getActivity().getApplicationContext(),lectura_view.class);
            showContent.setData(Uri.parse(content));
            startActivity(showContent);
        }

    });

}

活动XML:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
tools:context="com.estudiable.estudiable.Categoria_Emprendimiento"
android:background="@color/blanco">

<ListView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@android:id/list"
    android:layout_alignParentTop="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"

    android:layout_margin="@dimen/layout_margin"
    android:layout_marginBottom="@dimen/layout_margin_bottom"
    android:paddingBottom="@dimen/padding_bottom_listview"
    android:clipToPadding="false"

    android:divider="@color/naranja_tigre_2"
    android:dividerHeight="2px"

    android:layout_centerVertical="true"/>

<com.google.android.gms.ads.AdView android:id="@+id/adView"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    ads:adUnitId="ca-app-pub-XXXX"
    ads:adSize="BANNER"
    android:layout_alignParentBottom="true"/>

</RelativeLayout>

片段XML:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
tools:context="com.estudiable.estudiable.Seccion2"
android:background="@color/blanco">

<ListView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@android:id/list"
    android:layout_alignParentTop="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"

    android:layout_margin="@dimen/layout_margin"
    android:layout_marginBottom="@dimen/layout_margin_bottom"
    android:paddingBottom="@dimen/padding_bottom_listview"
    android:clipToPadding="false"

    android:divider="@color/naranja_tigre_2"
    android:dividerHeight="2px"

    android:layout_centerVertical="true"
    tools:listitem="@android:layout/simple_list_item_1" />

<com.google.android.gms.ads.AdView android:id="@+id/adView"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    ads:adUnitId="ca-app-pub-XXX"
    ads:adSize="BANNER"
    android:layout_alignParentBottom="true"/>

</RelativeLayout>enter code here

将Seccion2类的getActivity.getApplicationContext更改为getActivity

---

不要使用应用程序上下文来膨胀视图，您将获得不规则的视图。

我看不到任何颜色的变化。