implemented item selection + button to print a list of issues/news etc(Button has no functionality yet).
This commit is contained in:
+121
-6
@@ -3,14 +3,19 @@ import 'package:cloud_firestore/cloud_firestore.dart';
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import 'package:firebase_storage/firebase_storage.dart';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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import 'package:printing/printing.dart';
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import 'DetailPage.dart';
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import 'package:intl/intl.dart';
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import 'package:pdf/widgets.dart' as pdfWidgets;
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import 'package:http/http.dart' as http;
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class UserDefinedItem extends StatelessWidget {
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final String title;
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final String datum;
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final String description;
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final String imageUrl;
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final Function onLongPress;
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final bool isSelected;
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const UserDefinedItem({
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Key? key,
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@@ -18,12 +23,14 @@ class UserDefinedItem extends StatelessWidget {
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required this.description,
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required this.datum,
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required this.imageUrl,
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required this.onLongPress,
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required this.isSelected,
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}) : super(key: key);
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@override
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Widget build(BuildContext context) {
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return Card(
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child: InkWell(
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return InkWell(
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onTap: () {
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// Open a new screen when the user taps on the list item
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Navigator.push(
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@@ -38,8 +45,12 @@ class UserDefinedItem extends StatelessWidget {
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),
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);
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},
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onLongPress: onLongPress as void Function()?,
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child: Card(
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child: Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Stack(
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children: [
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SizedBox(
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width: 120,
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@@ -56,6 +67,19 @@ class UserDefinedItem extends StatelessWidget {
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errorWidget: (context, url, error) => const Icon(Icons.error),
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),
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),
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if (isSelected) // Wenn das Element ausgewählt ist, zeigen Sie die Checkbox an
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Positioned(
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top: 0,
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left: 0,
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child: Checkbox(
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value: isSelected,
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onChanged: (bool? value) {
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onLongPress(); // Wenn die Checkbox angeklickt wird, rufen Sie die onLongPress-Funktion auf
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},
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),
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),
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],
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),
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Flexible(
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flex: 1,
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child: Column(
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@@ -104,6 +128,8 @@ class UserDefinedItem extends StatelessWidget {
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}
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}
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class GenericList extends StatefulWidget {
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final String collectionName;
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const GenericList({Key? key, required this.collectionName}) : super(key: key);
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@@ -114,6 +140,7 @@ class GenericList extends StatefulWidget {
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class _GenericListState extends State<GenericList> {
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final FirebaseFirestore firestore = FirebaseFirestore.instance;
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Map<String, bool> selectedItems = {};
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@override
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void initState() {
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@@ -139,7 +166,9 @@ class _GenericListState extends State<GenericList> {
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await FirebaseStorage.instance.refFromURL(imageUrl).delete();
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}
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// Löschen Sie das Dokument von der Firestore-Kollektion
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await firestore.collection(widget.collectionName).doc(documentId).delete();
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await firestore.collection(widget.collectionName)
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.doc(documentId)
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.delete();
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} catch (e) {
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if (kDebugMode) {
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print('Error deleting document: $e');
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@@ -149,9 +178,13 @@ class _GenericListState extends State<GenericList> {
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@override
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Widget build(BuildContext context) {
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return StreamBuilder<QuerySnapshot>(
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return Scaffold(
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body: Stack(
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children: [
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StreamBuilder<QuerySnapshot>(
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stream: getDocumentStream(),
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builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
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builder: (BuildContext context,
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AsyncSnapshot<QuerySnapshot> snapshot) {
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if (snapshot.hasError) {
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return Text('Error: ${snapshot.error}');
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}
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@@ -159,7 +192,8 @@ class _GenericListState extends State<GenericList> {
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case ConnectionState.waiting:
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return const Text('Loading...');
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default:
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final List<QueryDocumentSnapshot> documents = snapshot.data!.docs;
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final List<QueryDocumentSnapshot> documents = snapshot.data!
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.docs;
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return ListView.builder(
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itemCount: documents.length,
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itemBuilder: (BuildContext context, int index) {
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@@ -190,12 +224,93 @@ class _GenericListState extends State<GenericList> {
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datum: formattedDate,
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description: data['description'] ?? '',
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imageUrl: data['imageUrl'] ?? '',
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isSelected: selectedItems.containsKey(documentId)
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? selectedItems[documentId]!
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: false,
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onLongPress: () {
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// Aktualisieren Sie den ausgewählten Zustand des Elements
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setState(() {
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selectedItems[documentId] =
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!selectedItems.containsKey(documentId)
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? true
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: !selectedItems[documentId]!;
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});
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},
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),
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);
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},
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);
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}
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},
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),
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if (selectedItems.containsValue(true))
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Align(
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alignment: Alignment.bottomLeft,
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child: Padding(
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padding: const EdgeInsets.all(16.0),
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child: FloatingActionButton(
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onPressed: () {
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// Führen Sie hier die gewünschte Aktion aus
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},
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backgroundColor: Colors.red,
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child: const Icon(Icons.picture_as_pdf),
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),
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),
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),
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],
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),
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);
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}
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/*
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Future<pdfWidgets.ImageProvider> _loadNetworkImage(String url) async {
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final response = await http.get(Uri.parse(url));
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if (response.statusCode != 200) {
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throw Exception('Failed to load network image.');
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}
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final Uint8List bytes = response.bodyBytes;
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final imageProvider = pdfWidgets.MemoryImage(bytes);
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return imageProvider;
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}
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Future<void> _printPdf() async {
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final pdf = pdfWidgets.Document();
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for (var docId in selectedItems.keys) {
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final title = selectedItems[docId]!['title'];
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final datum = selectedItems[docId]!['datum'];
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final description = selectedItems[docId]!['description'];
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final imageUrl = selectedItems[docId]!['imageUrl'];
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final image = await _loadNetworkImage(imageUrl);
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pdf.addPage(
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pdfWidgets.MultiPage(
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build: (context) => [
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pdfWidgets.Center(
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child: pdfWidgets.SizedBox(
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width: double.infinity,
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child: pdfWidgets.AspectRatio(
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aspectRatio: 1,
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child: pdfWidgets.Image(image),
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),
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),
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),
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pdfWidgets.Text(
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title,
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style: pdfWidgets.TextStyle(
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fontSize: 20,
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fontWeight: pdfWidgets.FontWeight.bold
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)
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),
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pdfWidgets.Text(datum, style: const pdfWidgets.TextStyle(fontSize: 14, )),
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pdfWidgets.Paragraph(text: description, style: const pdfWidgets.TextStyle(fontSize: 12)),
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],
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),
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);
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}
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await Printing.sharePdf(bytes: await pdf.save(), filename: 'selectedItems.pdf');
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}*/
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}
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@@ -30,6 +30,7 @@ class _MyHomePageState extends State<MyHomePage> {
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});
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}
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@override
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Widget build(BuildContext context) {
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final List<Widget> widgetOptions = <Widget>[
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