VisitorApp/app/src/main/res/drawable/bg_input.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <!--设置圆角-->
    <!--  按顺序分别对应：左下角的角度、右下角的角度、左上角的角度、右上角的角度-->
    <corners
        android:bottomLeftRadius="@dimen/dp_1"
        android:bottomRightRadius="@dimen/dp_1"
        android:topLeftRadius="@dimen/dp_1"

        android:topRightRadius="@dimen/dp_1" />
    <!--  设置边框大小与背景色-->
    <stroke
        android:width="2dp"
        android:color="@color/ColorGray" />
    <solid android:color="@color/white" />
</shape>