state_activated和ListView项的背景颜色

我试图颜色项目的（选择）的背景。我与Android模拟器的工作。我在水库一组XML文件/绘制。

I'm trying to color an item's (when selected) background. I'm working with the Android emulator. I have a set of XML files in res/drawable.

background.xml：

background.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/pressed" />
    <item android:drawable="@drawable/normal" />
</selector>

normal.xml：

normal.xml :

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <solid android:color="#000000" />
</shape>

pressed.xml：

pressed.xml :

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <solid android:color="#33ffff" />
</shape>

和我list_item.xml，与...我的项目：
＆LT; TextView的......机器人：背景=@绘制/背景机器人：填充=6DP/＆GT;

And my list_item.xml, with...my item : <TextView ... android:background="@drawable/background" android:padding="6dp" />

那么，在模拟器 STATE_ pressed =真正的的作品，但是我希望所选择的项目仍然是有色。所以，相反的 STATE_ pressed 我试过 state_activated ...但是哎...不工作太。我的项目仍然是黑..​​.

Well, in the emulator state_pressed="true" works, however I want that the selected item remains colored. So, instead of state_pressed I tried state_activated ...but hey...doesn't works too. My item remains black...

需要一些帮助:)！

感谢您