1.优化UI

webview/src/main/res/layout/activity_bridge_web.xml

@@ -13,6 +13,7 @@
             android:id="@+id/webView"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
+            android:background="@android:color/white"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintEnd_toEndOf="parent"