冷启动页增加icon/bug修复

android/app/src/main/res/drawable-v21/launch_background.xml

@@ -4,9 +4,9 @@
     <item android:drawable="?android:colorBackground" />
 
     <!-- You can insert your own image assets here -->
-    <!-- <item>
+     <item>
         <bitmap
             android:gravity="center"
-            android:src="@mipmap/launch_image" />
-    </item> -->
+            android:src="@mipmap/ic_launcher" />
+    </item>
 </layer-list>

android/app/src/main/res/drawable/launch_background.xml

@@ -4,9 +4,9 @@
     <item android:drawable="@android:color/white" />
 
     <!-- You can insert your own image assets here -->
-    <!-- <item>
+    <item>
         <bitmap
             android:gravity="center"
-            android:src="@mipmap/launch_image" />
-    </item> -->
+            android:src="@mipmap/ic_launcher" />
+    </item>
 </layer-list>

lib/package/chat_dash/src/widgets/message_row/default_message_text.dart

@@ -84,7 +84,7 @@ class _DefaultMessageTextState extends State<DefaultMessageText> {
     );
     return widget.messageOptions.shareMenuBuilder
             ?.call(widget.message, controller, chatMessageBody, true) ??
-        Container();
+        chatMessageBody;
   }
 
   List<Widget> getMessage(