写一个selector

<?xmlversion="1.0"encoding="utf-8"?><layer-listxmlns:android="http://schemas.android.com/apk/res/android"><item><shape><strokeandroid:width="2px"android:color="@color/commo_text_color"/><!--边框颜色--><solidandroid:color="#FFFCFCFC"/><!--填充色--><cornersandroid:radius="4dp"/></shape></item></layer-list>