Teso_Mobile/lib/Pages/Sub_Pages/Coupons/LoadGiftRecipient.dart

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

class LoadGiftRecipient extends StatefulWidget {
  @override
  _LoadGiftRecipientState createState() => _LoadGiftRecipientState();
}

class _LoadGiftRecipientState extends State<LoadGiftRecipient> {
  TextEditingController searchkey;
  List<TesoUser> recipientMain= <TesoUser>[];
  List<TesoUser> recipient;
  SharedPreferences prefs;

  void clearText() {
    setState(() {});
  }

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

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: PreferredSize(
        preferredSize: Size.fromHeight(150),
        child: Container(
          // margin: EdgeInsets.only(top: 30),
          child: Column(children: [
            buildNewHead(context, clearText, "Look up recipient"),
            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 (recipientMain.length == 0) {
              recipientMain = value.friends;
              recipient = value.friends;
            }
            recipient.sort((a, b) {
              return b.firstname.compareTo(a.firstname);
            });
            return ListView.builder(
              itemCount: recipient.length,
              itemBuilder: (context, int index) {
                return InkWell(
                  onTap: () =>
                      Navigator.pop(context, recipient.elementAt(index)),
                  child: buildFriend(context, recipient.elementAt(index)),
                );
              },
            );
          }
        },
      ),
    );
  }
}