Android如何让TextView子元素随着父元素的背景变化而改变字体颜色？

重点在于

android:duplicateParentState="true"

首先创建两个XML：

父元素背景选择器 item_bg.xml

<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android">    <item android:drawable="@color/black" android:state_pressed="true"></item>    <item android:drawable="@color/yellow"></item></selector>

子元素颜色选择器 text_bg.xml

<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android">    <item android:color="@color/white" android:state_pressed="true"></item>    <item android:color="@color/black"></item></selector>

布局文件：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="80dp"        <span style="color:#ff0000;">android:background="@drawable/item_bg"</span>        android:clickable="true">        <TextView            android:layout_width="match_parent"            android:layout_height="match_parent"            <span style="color:#ff0000;">android:duplicateParentState="true"</span>            android:gravity="center"            android:text="测试"            <span style="color:#ff0000;">android:textColor="@drawable/text_bg"</span>            android:textSize="30dp" />    </LinearLayout></RelativeLayout>

color.xml

<?xml version="1.0" encoding="utf-8"?><resources>    <color name="yellow">#FF9800</color>    <color name="black">#000000</color>    <color name="white">#FFFFFF</color></resources>

Android如何让TextView子元素随着父元素的背景变化而改变字体颜色？

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