selector的例子

例子1

文件名：sl_rounded_rectangle_button_picture.xml

文件内容:

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

    <item android:drawable="@drawable/ic_btn_click" android:state_pressed="true"/>
    <item android:drawable="@drawable/ic_btn_normal" android:state_enabled="false"/>
    <item android:drawable="@drawable/ic_btn_normal"/>

</selector>

例子2
主文件：sl_rounded_rectangle_button.xml

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

    <item android:drawable="@drawable/bg_rounded_rectangle_button_p" android:state_pressed="true"/>
    <item android:drawable="@drawable/bg_rounded_rectangle_button_en" android:state_enabled="false"/>
    <item android:drawable="@drawable/bg_rounded_rectangle_button_n"/>

</selector>

例子2 辅助文件
bg_rounded_rectangle_button_p.xml

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

    <solid android:color="@color/common_btn_press_color" />

    <corners
        android:bottomLeftRadius="10dp"
        android:bottomRightRadius="10dp"
        android:topLeftRadius="10dp"
        android:topRightRadius="10dp" />

</shape>

例子2 辅助文件
bg_rounded_rectangle_button_en.xml

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

    <solid android:color="@color/common_btn_normal_color" />

    <corners
        android:bottomLeftRadius="5dp"
        android:bottomRightRadius="5dp"
        android:topLeftRadius="5dp"
        android:topRightRadius="5dp" />

</shape>

例子2 辅助文件

bg_rounded_rectangle_button_n.xml

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

    <solid android:color="@color/common_btn_normal_color" />

    <corners
        android:bottomLeftRadius="5dp"
        android:bottomRightRadius="5dp"
        android:topLeftRadius="5dp"
        android:topRightRadius="5dp" />

</shape>