1.优化代码

tuichat/src/main/res/layout/chat_layout.xml

@@ -69,7 +69,6 @@
                 android:layout_alignParentEnd="true"
                 android:layout_marginEnd="@dimen/btn_margin_right"
                 android:layout_marginBottom="@dimen/btn_margin_right"
-                android:visibility="gone"
                 app:cardCornerRadius="4dp"
                 app:cardElevation="6dp"
                 app:cardUseCompatPadding="true">