实现效果

实现方案

背景: switch_track.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/switch_selected_track" android:state_checked="true" />
    <item android:drawable="@drawable/switch_unselected_track" />
</selector>

滑块: switch_thumb.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval">
    <!-- 滑动块的宽高 -->
    <size
        android:width="20dp"
        android:height="20dp" />
    <solid android:color="#FFFFFF" />
    <!-- 透明的描边-->
    <stroke
        android:width="3dp"
        android:color="@android:color/transparent" />
</shape>

选中背景:switch_selected_track.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <size android:height="20dp" />
    <corners android:radius="10dp" />
    <solid android:color="#00C653" />
</shape>

未选中背景: switch_unselected_track.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle" >
    <size android:height="20dp"/>
    <corners android:radius="10dp"/>
    <solid android:color="#D9D9D9" />
</shape>

使用方法

<Switch
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:switchMinWidth="20dp"
    android:thumb="@drawable/switch_thumb"
    android:track="@drawable/switch_track" />