feat: add share/save button to PDF viewer

Matthias Nott

3 days ago a526ea4ce4a6da31222f73ca12c8dd9017fb2410

feat: add share/save button to PDF viewer

 lib/widgets/pdf_viewer.dart
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@@ -1,9 +1,12 @@
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+import 'dart:io';
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 import 'dart:typed_data';
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 import 'package:flutter/material.dart';
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+import 'package:path_provider/path_provider.dart';
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 import 'package:pdfrx/pdfrx.dart';
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+import 'package:share_plus/share_plus.dart';
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-/// Full-screen PDF viewer with pinch-to-zoom and page navigation.
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+/// Full-screen PDF viewer with pinch-to-zoom, page navigation, and share/save.
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 class PdfViewerScreen extends StatelessWidget {
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   final Uint8List pdfBytes;
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   final String title;
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@@ -14,6 +17,25 @@
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     this.title = 'PDF',
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   });
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+  Future<void> _share(BuildContext context) async {
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+    try {
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+      final dir = await getTemporaryDirectory();
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+      final safeName = title.replaceAll(RegExp(r'[^\w\s.-]'), '').trim();
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+      final fileName = safeName.endsWith('.pdf') ? safeName : '$safeName.pdf';
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+      final file = File('${dir.path}/$fileName');
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+      await file.writeAsBytes(pdfBytes);
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+      await SharePlus.instance.share(
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+        ShareParams(files: [XFile(file.path, mimeType: 'application/pdf')]),
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+      );
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+    } catch (e) {
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+      if (context.mounted) {
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+        ScaffoldMessenger.of(context).showSnackBar(
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+          SnackBar(content: Text('Share failed: $e')),
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+        );
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+      }
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+    }
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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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     return Scaffold(
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@@ -21,6 +43,13 @@
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         title: Text(title, style: const TextStyle(fontSize: 16)),
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         backgroundColor: Colors.black87,
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         foregroundColor: Colors.white,
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+        actions: [
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+          IconButton(
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+            icon: const Icon(Icons.ios_share),
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+            tooltip: 'Share / Save',
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+            onPressed: () => _share(context),
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+          ),
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+        ],
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       ),
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       backgroundColor: Colors.grey[900],
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       body: PdfViewer.data(pdfBytes, sourceName: title),