网络文章-v3 -下拉与加载更多

android/app/src/main/AndroidManifest.xml

@@ -1,5 +1,6 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.toly1994.flutter_first_station">
+    <uses-permission android:name="android.permission.INTERNET"/>
    <application
         android:label="flutter_first_station"
         android:name="${applicationName}"

lib/net_article/views/article_content.dart

@@ -76,7 +76,7 @@ class _ArticleContentState extends State<ArticleContent> {
   }
 
   void _onLoad() async{
-    int nextPage = _articles.length%20;
+    int nextPage = _articles.length ~/ 20;
     List<Article> newArticles = await api.loadArticles(nextPage);
     _articles = _articles + newArticles;
     setState(() {});