如何在Flutter中解析JSON？

问题在于显示文章。yaa也正如@ISpam Ossama所说，您必须使用setState这样将数据添加到列表中。

void getNews() async {var newsData = await networkHelper.getData();for (int i = 0; i < newsData['articles'].length; i++) {  var title = newsData['articles'][i]['title'];  var urlToImage = newsData['articles'][i]['urlToImage'];  var content = newsData['articles'][i]['content'];  var author = newsData['articles'][i]['author'];  var url = newsData['articles'][i]['url'];  print(title);  print(urlToImage);  print(url);  print(content);  print(author);  print('123456789123456789123456789123456789');  setState(() {   articles.add(    Article(      author: author,      content: content,      title: title,      url: url,      urlToImage: urlToImage,    ),  );  });  print(articles[0].author);}}

现在，您必须显示这样的文章。

ListView.builder(          itemCount: articles.length,          itemBuilder: (BuildContext ctxt, int index) { return Text(articles[index].title);          },        )

希望对您有帮助！