转发内容跳转修改；

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lib/community/community_view/community_dynamic.dart

@@ -556,7 +556,7 @@ class _CommunityDynamic extends State<CommunityDynamic> {
               "${widget?.article?.mainTitle ?? ""}  ${buildShareUrl()}";
             } else if (platform == ShareSDKPlatforms.douyin) {
               Navigator.of(context).popAndPushNamed('/router/share_trends',
-                  arguments: {"articleId": widget.article.id});
+                  arguments: {"articleId": widget.article.id,"shareUrl":buildShareUrl()});
               return;
             } else if (platform == ShareSDKPlatforms.facebook) {
               Navigator.of(context).popAndPushNamed('/router/chat_details_page',

lib/community/share_trends.dart

@@ -173,7 +173,7 @@ class _ShareTrends extends State<ShareTrends>{
                             '/router/scan_web',
                             arguments: {
                               "result": widget.arguments["shareUrl"],
-                              "title":"",
+                              "title":"一心回乡",
                             },
                           );
                         },

lib/mine/scan_web.dart

@@ -45,12 +45,12 @@ class _ScanWeb extends State<ScanWeb> {
         onWebViewCreated: (WebViewController controller){
           webViewController =controller;
         },
-        onProgress: (int progress) async {
+        onPageFinished: (String url) async {
+          EasyLoading.dismiss();
           if(widget.arguments["title"] != null)
             return;
           title = await webViewController?.getTitle();
           setState((){});
-          EasyLoading.dismiss();
         },
       ),
     );

lib/view_widget/share_dialog.dart

@@ -80,6 +80,7 @@ class _ShareDialog extends State<ShareDialog> {
                         platformIcons[platforms.indexOf(e)],
                         width: 40,
                         height: 40,
+                        fit: BoxFit.fill,
                       ),
                       SizedBox(
                         height:8.h,