update:2021.03.19

fix:重新提交
add:

res/drawable/gutter_horizontal.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- This "gutter" has a shadow at the top and a subtler shadow on the bottom. -->
-<shape xmlns:android="http://schemas.android.com/apk/res/android">
-    <gradient android:type="linear"
-              android:angle="-90"
-              android:startColor="#ffE0E0E0"
-              android:centerColor="#ffffffff"
-              android:endColor="#ffF5F5F5" />
-</shape>