Hello community, I'm new to the Flutter world and mobile app development and struggling with How to display a saved list in Shared preferences in another list in another page(Favorite page
The favorite button to save the list in
Shared Preferences :
Padding(
padding: const EdgeInsets.fromLTRB(0, 0, 0, 0),
child: FlatButton(
child: Icon(
Icons.favorite,
color: Colors.green,
size: 25,
),
onPressed: () async {
SharedPreferences prefs =
await SharedPreferences.getInstance();
Article savedArticle = Article(
source: widget.list[i].source,
author: widget.list[i].author,
title: widget.list[i].title,
description: widget.list[i].description,
url: widget.list[i].url,
urlToImage: widget.list[i].urlToImage,
publishedAt: widget.list[i].publishedAt,
content: widget.list[i].content);
String json = jsonEncode(savedArticle);
// print('saved... $json');
list.add(json);
prefs.setStringList('News', list);
print("shared..."
prefs.getStringList('News').length.toString());
},
),
),
This is a screenshot of the saved list in shared pref displayed in the console:
My goal is to display the saved list in the shared preferences in another page (favorite articles page) in a list but without favorite button. Could any one help me PLEASE ? Thank you.
CodePudding user response:
On another page you have to get shared preferences instance.
final sharedPreferences = await SharedPreferences.getInstange();
Then you can get your list by sharedPreferences.getStringList('News'); and convert to json by json.decoder;
If you want to make an instance of your Article class then you could implement a method inside of that that would return new instance of the class from json. For example:
class Article {
factory Article fromJson(Map<String, dynamic> json) {
return Article(id: json['id'], ...);
}
}