Android图库未选择的项目没有透明度

Question

是否可以让库中的所有项目都是"实心"的，没有透明度？我尝试过使用StateListDrawable，但它仍然为未选择的项提供了透明度。

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@color/card_background" android:state_focused="true"/>
    <item android:drawable="@color/card_background" android:state_pressed="true"/>
    <item android:drawable="@color/card_background" android:state_active="true"/>
    <item android:drawable="@color/card_background" android:state_selected="true"/>
    <item android:drawable="@color/card_background" android:state_enabled="true"/>
    <item android:drawable="@color/card_background" android:state_window_focused="true"/>
    <item android:drawable="@color/card_background" android:state_focused="false"/>
    <item android:drawable="@color/card_background" android:state_pressed="false"/>
    <item android:drawable="@color/card_background" android:state_active="false"/>
    <item android:drawable="@color/card_background" android:state_selected="false"/>
    <item android:drawable="@color/card_background" android:state_enabled="false"/>
    <item android:drawable="@color/card_background" android:state_window_focused="false"/>
    <item android:drawable="@color/card_background"/>
</selector>

Answer 1

我在库xml 上用android:unselectedAlpha="1"解决了这个问题