我想在我的应用程序中设置lisview样式,如图所示

我试图通过应用渐变来开发它：

list_item_normal的代码是：

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle" >

    <gradient
        android:centerColor="#E6E6E6"
        android:endColor="#CCCCCC"
        android:startColor="#FFFFFF" 
        android:angle="270"/>
    <!--
        <gradient
        android:startColor="#FF7500"
        android:centerColor="#FFCC00"
        android:endColor="#FF7500"
        android:angle="270"/>
    -->

    <stroke
        android:width="1dp"
        android:color="#A0000000" />

    <padding
        android:bottom="8dp"
        android:left="5dp"
        android:right="5dp"
        android:top="8dp" />

    <corners android:radius="5dp" />

</shape>

list_item_pressed.xml的代码是：

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" 
    android:shape="rectangle">

    <gradient
        android:centerColor="#E6E6E6"
        android:endColor="#CCCCCC"
        android:startColor="#FFFFFF" android:angle="270"/>
    <!--
         <gradient android:startColor="#FF66CFE6" android:centerColor="#FF207FB9" 
        android:endColor="#FF0060B8" android:angle="270"/>
    -->

    <stroke
        android:width="2dp"
        android:color="#80000000" />

    <padding
        android:bottom="8dp"
        android:left="5dp"
        android:right="5dp"
        android:top="8dp" />

    <corners android:radius="7dp" />

</shape>

list_item_pressed.xml的代码：

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" 
    android:shape="rectangle">

    <gradient
        android:centerColor="#E6E6E6"
        android:endColor="#CCCCCC"
        android:startColor="#FFFFFF" android:angle="270"/>
    <!--
         <gradient android:startColor="#FF66CFE6" android:centerColor="#FF207FB9" 
        android:endColor="#FF0060B8" android:angle="270"/>
    -->

    <stroke
        android:width="2dp"
        android:color="#80000000" />

    <padding
        android:bottom="8dp"
        android:left="5dp"
        android:right="5dp"
        android:top="8dp" />

    <corners android:radius="7dp" />

</shape>

和list_gradient.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_pressed="true"
          android:drawable="@drawable/list_item_pressed" />

    <item android:state_focused="true"
          android:drawable="@drawable/list_item_selected" />

    <item android:drawable="@drawable/list_item_normal" />

</selector>

我已经在自定义列表项上应用了这种风格,如：

<TextView
    .../>

<ImageView
   ... />

和我有lisview的main.xml是：

<ListView
    android:id="@+id/List"
    style="@style/list_item_gradient"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:clickable="true" >
</ListView>

我得到的输出如下所示：

请告诉我我做错了什么来帮助我..

谢谢
思鲁提

解决方法:

你知道Dithering吗？检查一下：http://android.amberfog.com/?p=247.

还要检查以下问题：

> How to draw a smooth/dithered gradient on a canvas in Android
> Android view dithering

是的,我建议为您的LitsView创建自定义适配器,您只需创建一个自定义行xml布局文件并应用背景图像一次.