add 底部弹窗background

Components/newscontent/src/main/res/drawable/bg_bottom_dialog.xml

+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+
+    <solid android:color="#FFFFFFFF" />
+
+    <corners android:radius="8dp" />
+
+</shape>
\ No newline at end of file

Components/newscontent/src/main/res/layout/dialog_bottom_select.xml

@@ -3,7 +3,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:background="#FFFFFFFF">
+    android:background="@drawable/bg_bottom_dialog">
 
     <com.yidian.nightmode.widget.YdRecyclerView
         android:id="@+id/rv_select_items"