1:搜索页搜索结果为空的时新增无图书内容提示

lib/pages/search/view.dart

@@ -50,7 +50,9 @@ class _SearchPageState extends State<SearchPage> {
             )
           ],
         ),
-        body: buildListView(controller),
+        body:
+        buildListView(controller),
+
       ),
     );
   }
@@ -61,6 +63,24 @@ class _SearchPageState extends State<SearchPage> {
       return BuildHistory(controller: controller);
     } else {
       // 如果条件为false，显示搜索到的书籍
+      if(controller.books.isEmpty){
+        return
+          SingleChildScrollView(
+              child:Container(
+                padding: EdgeInsets.only(top: 110.w),
+                alignment: Alignment.center,
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.center,
+                  children: [
+                    SizedBox(height: 152.w, width: 195.w,
+                      child: Image.asset( 'assets/images/none.png',),),
+                    SizedBox(height: 13.w,),
+                    Text('暂无图书，请检查输入内容',style: TextStyle(fontSize: 14.w,color: Colours.c9),),
+                  ],
+                ),
+              ),
+          );
+      }else{
         return ListView.builder(
           // shrinkWrap: true,
           // physics: NeverScrollableScrollPhysics(),
@@ -84,6 +104,8 @@ class _SearchPageState extends State<SearchPage> {
               );
             });
       }
+
+    }
   }
 
   hideSoftKeyboard(BuildContext context) {