menambahkan isi di bagian tukar uang

lib/ui/screen/tukar_uang.dart

+import 'package:final_project_2023/constants.dart';
+import 'package:final_project_2023/ui/screen/widgets/sampah_widget.dart';
+import 'package:flutter/material.dart';
+import '../../models/listsampah.dart';
+
+class TukarUang extends StatefulWidget {
+  final List<Sampah> addedToTukarUang;
+  const TukarUang({Key? key, required this.addedToTukarUang}) : super(key: key);
+
+  @override
+  State<TukarUang> createState() => _TukarUangState();
+}
+
+class _TukarUangState extends State<TukarUang> {
+  @override
+  Widget build(BuildContext context) {
+    Size size = MediaQuery.of(context).size;
+    return Scaffold(
+      body: widget.addedToTukarUang.isEmpty
+          ? Center(
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.center,
+                mainAxisAlignment: MainAxisAlignment.center,
+                children: [
+                  SizedBox(
+                    height: 100,
+                    child: Image.asset('assets/images/money.png.png'),
+                  ),
+                  const SizedBox(
+                    height: 10,
+                  ),
+                  Text(
+                    'Belum ada barang yang ditukarkan',
+                    style: TextStyle(
+                      color: Constants.primaryColor,
+                      fontWeight: FontWeight.w300,
+                      fontSize: 18,
+                    ),
+                  ),
+                ],
+              ),
+            )
+          : Container(
+              padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 30),
+              height: size.height,
+              child: Column(
+                children: [
+                  Expanded(
+                    child: ListView.builder(
+                        itemCount: widget.addedToTukarUang.length,
+                        scrollDirection: Axis.vertical,
+                        physics: const BouncingScrollPhysics(),
+                        itemBuilder: (BuildContext context, int index) {
+                          return SampahWidget(
+                              index: index,
+                              sampahList: widget.addedToTukarUang);
+                        }),
+                  ),
+                  Column(
+                    children: [
+                      const Divider(
+                        thickness: 1.0,
+                      ),
+                      Row(
+                        mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                        crossAxisAlignment: CrossAxisAlignment.center,
+                        children: [
+                          const Text(
+                            'Total',
+                            style: TextStyle(
+                              fontSize: 23,
+                              fontWeight: FontWeight.w300,
+                            ),
+                          ),
+                          Text(
+                            r'Rp 35000',
+                            style: TextStyle(
+                              fontSize: 24.0,
+                              color: Constants.primaryColor,
+                              fontWeight: FontWeight.bold,
+                            ),
+                          ),
+                        ],
+                      ),
+                    ],
+                  ),
+                ],
+              ),
+            ),
+    );
+  }
+}