效果如下：
默認(rèn).png
選中.png
代碼：
switch_track.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true">
<shape>
<size android:width="38dp" android:height="18dp" />
<corners android:radius="10dp" />
<solid android:color="#0c0c0c" />
</shape>
</item>
<item>
<shape>
<size android:width="38dp" android:height="18dp" />
<corners android:radius="10dp" />
<solid android:color="#a0a0a0" />
</shape>
</item>
</selector>
switch_thumb.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true">
<shape>
<size android:width="18dp" android:height="18dp" />
<corners android:radius="10dp" />
<solid android:color="#ffffff" />
<stroke android:width="2dp" android:color="#0c0c0c" />
</shape>
</item>
<item>
<shape>
<size android:width="18dp" android:height="18dp" />
<corners android:radius="10dp" />
<solid android:color="#ffffff" />
<stroke android:width="2dp" android:color="#a0a0a0" />
</shape>
</item>
</selector>
使用：
<Switch
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:thumb="@drawable/switch_thumb"
android:track="@drawable/switch_track" />
