如何在Kotlin(或Java)中使用状态创建形状 例如我想用Kotlin(或java)创建以下形状
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true" android:state_pressed="true">
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
<corners android:radius="999dp" />
<stroke android:width="6dp" android:color="#bfbfbf" />
<solid android:color="#f44336" />
</shape>
</item>
<item android:state_pressed="true">
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
<corners android:radius="999dp" />
<stroke android:width="2dip" android:color="#E0E0E0" />
<solid android:color="#f44336" />
</shape>
</item>
<item android:state_checked="true">
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
<corners android:radius="999dp" />
<stroke android:width="2dip" android:color="#E0E0E0" />
<solid android:color="#f44336" />
</shape>
</item>
<item>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
<corners android:radius="999dp" />
<stroke android:width="6dp" android:color="#bfbfbf" />
<solid android:color="#f44336" />
</shape>
</item>