<?xml version="1.0" encoding="utf-8"?> <layer-list xmlns:android="http://schemas.android.com/apk/res/android" > <item> <shape android:shape="rectangle" > <stroke android:width="0.5dp" android:color="#F0F0F0" /> </shape> </item> <item android:bottom="1dp" android:right="1dp" android:top="1dp"> <!-- 在实际使用中我发现1dp达不到显示效果,而2dp正好可以显示边框 --> <shape android:shape="rectangle" > <solid android:color="@color/white" /> </shape> </item> </layer-list>