info页面添加下滑刷新

InfoPage.xaml

@@ -10,9 +10,8 @@
             <converters:StringToBoolConverter x:Key="StringToBoolConverter" />
         </ResourceDictionary>
     </ContentPage.Resources>
-    <ScrollView>
-        <VerticalStackLayout Padding="20" Spacing="20">
-            <CollectionView x:Name="CardCollectionView"                             
+    <RefreshView x:Name="myRefreshView_" >
+        <CollectionView x:Name="CardCollectionView"                             
                  RemainingItemsThreshold="5">
                 <!-- 保持滚动条 -->
                 <CollectionView.ItemTemplate>
@@ -83,6 +82,5 @@
                     </DataTemplate>
                 </CollectionView.ItemTemplate>
             </CollectionView>
-        </VerticalStackLayout>
-    </ScrollView>
+    </RefreshView>
 </ContentPage>