android 快速实现 Switch 样式

需要自定义6个文件

1.滑块开启： switch_thumb_on.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval">
    <solid android:color="#3171D1" />
    <size
        android:width="30dp"
        android:height="30dp" />
</shape>

2.滑块关闭： switch_thumb_off.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval">
    <solid android:color="#CACACA" />
    <size
        android:width="30dp"
        android:height="30dp" />
</shape>

3.滑块selector：switch_thumb_selector.xml

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

4.滑块管道开启：switch_track_on.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval">
    <solid android:color="#94D2EE" />
    <!-- 设置stroke透明可以让滑块管道变小点 -->
    <stroke
        android:width="5dp"
        android:color="@android:color/transparent" />
    <!-- 设置corners 圆角15dp对应滑块的size=30dp的一半(显示为半圆) -->
    <corners android:radius="15dp" />
</shape>

5.滑块管道关闭：switch_track_off.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <solid android:color="#F5F0F0" />
    <!-- 设置stroke透明可以让滑块管道变小点 -->
    <stroke
        android:width="5dp"
        android:color="@android:color/transparent" />
    <!-- 设置corners 圆角15dp对应滑块的size=30dp的一半(显示为半圆) -->
    <corners android:radius="15dp" />
</shape>

6.滑块管道selector：

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

7.布局使用：

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