优化部分代码

teacher/src/main/res/layout/activity_home_page_layout.xml

@@ -22,7 +22,7 @@
             android:paddingBottom="0dp"
             app:contentScrim="@color/white"
             app:titleEnabled="false"
-            app:scrimAnimationDuration="50"
+            app:scrimAnimationDuration="10"
             app:statusBarScrim="@color/white"
             app:layout_scrollFlags="scroll|exitUntilCollapsed|snap">