62 lines
2.4 KiB
Dart
62 lines
2.4 KiB
Dart
import 'dart:async';
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import 'dart:io';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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import 'package:invoiceninja_flutter/data/models/invoice_model.dart';
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import 'package:invoiceninja_flutter/ui/app/loading_indicator.dart';
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import 'package:invoiceninja_flutter/utils/localization.dart';
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import 'package:path_provider/path_provider.dart';
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import 'package:flutter_pdfview/flutter_pdfview.dart';
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import 'package:url_launcher/url_launcher.dart';
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Future<Null> viewPdf(InvoiceEntity invoice, BuildContext context) async {
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showDialog<Scaffold>(
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context: context,
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builder: (BuildContext context) {
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final localization = AppLocalization.of(context);
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return Scaffold(
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appBar: AppBar(
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title: Text(invoice.isQuote
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? localization.quote
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: localization.invoice + ' ' + invoice.invoiceNumber),
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actions: <Widget>[
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FlatButton(
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child: Text(localization.download),
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onPressed: () {
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launch(invoice.invitationDownloadLink,
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forceSafariVC: false, forceWebView: false);
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},
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),
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],
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),
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body: FutureBuilder(
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future: createFileOfPdfUrl(invoice.invitationDownloadLink),
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builder: (BuildContext context, AsyncSnapshot<File> snapshot) {
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switch (snapshot.connectionState) {
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case ConnectionState.none:
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case ConnectionState.active:
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case ConnectionState.waiting:
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return LoadingIndicator();
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case ConnectionState.done:
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if (snapshot.hasError)
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return Text('Error: ${snapshot.error}');
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else
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return PDFView(filePath: snapshot.data.path);
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}
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return null; // unreachable
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}),
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);
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});
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}
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Future<File> createFileOfPdfUrl(String url) async {
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final filename = url.substring(url.lastIndexOf('/') + 1);
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final request = await HttpClient().getUrl(Uri.parse(url));
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final response = await request.close();
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final bytes = await consolidateHttpClientResponseBytes(response);
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final dir = (await getApplicationDocumentsDirectory()).path;
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final file = new File('$dir/$filename');
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await file.writeAsBytes(bytes);
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return file;
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}
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