android - 页脚和页眉未在 Android ListView 中添加 - 错误修复

Question

我正在使用自定义 ListView 。这是我的代码:

protected void onCreate(Bundle savedInstanceState)
    {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        viewInit();

        adapter = new myPlanAdapter(this);
        LayoutInflater inflater = this.getLayoutInflater();
        LinearLayout listFooterView = (LinearLayout) inflater.inflate(
                R.layout.violet_footer, null);

        listView.addFooterView(listFooterView);

        LinearLayout listHeaderView = (LinearLayout) inflater.inflate(
                R.layout.blue_header, null);

        listView.addHeaderView(listHeaderView);

        listView.setAdapter(adapter);

        listView.setOnItemClickListener(this);

    }

这是我的xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/bg"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="45dp"
        android:background="@drawable/head"
        android:orientation="horizontal"
        android:weightSum="10" >

        <TextView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal|center_vertical"
            android:layout_weight="9"
            android:gravity="center"
            android:text="My Exam"
            android:textAppearance="?android:attr/textAppearanceLarge" />

        <Button
            android:id="@+id/AddMyPlanButtonId"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:text="@string/add" />
    </LinearLayout>

    <ListView
        android:cacheColorHint="@android:color/transparent"
        android:id="@+id/myPlanListViewId"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dp"/>

</LinearLayout>

这里是 footer.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="25dp"
    android:background="@drawable/trans_violet_half_round"
    android:orientation="vertical" >  
</LinearLayout>

我错过了什么？未添加页眉和页脚。

Answer 1

@Ashish:请在 LinearLayout 中添加一些 View 并尝试，就像我通过添加一个 TextView 更改了 Your footer.xml 文件一样。替换代码并查看结果。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/trans_violet_half_round"
android:orientation="vertical" > 

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="test" />

</LinearLayout>