1.定義Switch滑塊顏色、關閉狀態顏色和開啟狀態顏色

<!--Switch滑塊顏色-->
<color name="switch_thumb">#FFFFFF</color>
<!--Switch關閉狀態顏色-->
<color name="switch_off">#AAAAAA</color>
<!--Switch開啟狀態顏色-->
<color name="switch_on">#99CC00</color>

<!--Switch_thumb_selector-->
 
<item android:state_checked="false">
    <shape android:shape="oval">
        <solid android:color="@color/switch_thumb" />
        <size android:width="30dp" android:height="30dp" />
        <stroke android:width="2dp" android:color="@color/switch_off" />
    </shape>
</item>
 
<item android:state_checked="true">
    <shape android:shape="oval">
        <solid android:color="@color/switch_thumb" />
        <size android:width="30dp" android:height="30dp" />
        <stroke android:width="2dp" android:color="@color/switch_on" />
    </shape>
</item>
 

<!--switch_track_selector-->
<item android:state_checked="false">
    <shape android:shape="rectangle">
        <solid android:color="@color/switch_off" />
        <corners android:radius="30dp" />
    </shape>
</item>
<item android:state_checked="true">
    <shape android:shape="rectangle">
        <solid android:color="@color/switch_on" />
        <corners android:radius="30dp" />
    </shape>
</item>

<Switch
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:thumb="@drawable/switch_thumb_selector"
android:track="@drawable/switch_track_selector" />

修改Switch滑塊的size

<size android:width="30dp" android:height="30dp" />

android:switchMinWidth="100dp"