Teso_Mobile/lib/Pages/Sub_Pages/PersonalSub/Friends.dart

import 'package:provider/provider.dart';
import 'package:teso/Classes/TesoUser.dart';
import 'package:teso/Pages/PageWidgets/Friends/friendTile.dart';
import 'package:teso/Pages/Sub_Pages/userProfile3P.dart';
import 'package:flutter/material.dart';
import 'package:teso/Pages/PageWidgets/Friends/header.dart';
import 'package:page_transition/page_transition.dart';
import 'package:teso/providers/user_provider.dart';
import 'package:shared_preferences/shared_preferences.dart';

class Friends extends StatefulWidget {
  @override
  _FriendsState createState() => _FriendsState();
}

class _FriendsState extends State<Friends> {
  TextEditingController searchkey;
  List<TesoUser> friendsMain = <TesoUser>[];
  List<TesoUser> friends;
  SharedPreferences prefs;

  void clearText() {
    setState(() {
      searchkey.clear();
    });
  }

  @override
  void initState() {
    searchkey = new TextEditingController();
    super.initState();
  }

  updateList(String name) {
    setState(() {
      friends = friendsMain
          .where((element) =>
              element.username.toLowerCase().contains(name.toLowerCase()))
          .toList();
      friends.sort((a, b) {
        return b.firstname.compareTo(a.firstname);
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      // extendBody: true,
      appBar: PreferredSize(
        preferredSize: Size.fromHeight(90),
        child: buildFriendsHeader(context, searchkey, updateList),
      ),
      body: Consumer<UserProvider>(
        builder: (context, value, child) {
          if (value.friends == null) {
            return Center(
                child: CircularProgressIndicator(
                    valueColor: AlwaysStoppedAnimation<Color>(
                        Theme.of(context).primaryColor)));
          } else {
            if (friendsMain.length == 0) {
              friendsMain = value.friends;
              friends = value.friends;
            }
            friends.sort((a, b) {
              return b.firstname.compareTo(a.firstname);
            });
            return ListView.builder(
              itemCount: friends.length,
              itemBuilder: (context, int index) {
                return InkWell(
                  onTap: () => Navigator.push(
                    context,
                    PageTransition(
                      child: UserProfileThirdPerson(
                        user: friends.elementAt(index),
                      ),
                      type: PageTransitionType.fade,
                    ),
                  ),
                  child: buildFriend(context, friends.elementAt(index)),
                );
              },
            );
          }
        },
      ),
    );
  }
}