Android XML实现按下弹起获得焦点 调用不同图片

XML文件session_login_input_selector.xml

<?xml version="1.0" encoding="utf-8"?>

<selector

  xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_selected="true" android:drawable="@drawable/button_select" />

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

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

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

</selector>

布局文件调用

android:background="@drawable/session_login_input_selector"