feat：分享功能

ios/Podfile.lock

@@ -28,6 +28,8 @@ PODS:
     - FlutterMacOS
   - platform_metadata (0.0.1):
     - Flutter
+  - share_plus (0.0.1):
+    - Flutter
   - shared_preferences_foundation (0.0.1):
     - Flutter
     - FlutterMacOS
@@ -54,6 +56,7 @@ DEPENDENCIES:
   - permission_handler_apple (from `.symlinks/plugins/permission_handler_apple/ios`)
   - photo_manager (from `.symlinks/plugins/photo_manager/darwin`)
   - platform_metadata (from `.symlinks/plugins/platform_metadata/ios`)
+  - share_plus (from `.symlinks/plugins/share_plus/ios`)
   - shared_preferences_foundation (from `.symlinks/plugins/shared_preferences_foundation/darwin`)
   - sqflite_darwin (from `.symlinks/plugins/sqflite_darwin/darwin`)
   - url_launcher_ios (from `.symlinks/plugins/url_launcher_ios/ios`)
@@ -86,6 +89,8 @@ EXTERNAL SOURCES:
     :path: ".symlinks/plugins/photo_manager/darwin"
   platform_metadata:
     :path: ".symlinks/plugins/platform_metadata/ios"
+  share_plus:
+    :path: ".symlinks/plugins/share_plus/ios"
   shared_preferences_foundation:
     :path: ".symlinks/plugins/shared_preferences_foundation/darwin"
   sqflite_darwin:
@@ -109,6 +114,7 @@ SPEC CHECKSUMS:
   permission_handler_apple: 92d754bbaa7361d436db2d6c3c1c2a0fdcec462e
   photo_manager: 25fd77df14f4f0ba5ef99e2c61814dde77e2bceb
   platform_metadata: a4d1e9569219bb2dcbb54510554611df032ea023
+  share_plus: 50da8cb520a8f0f65671c6c6a99b3617ed10a58a
   shared_preferences_foundation: 7036424c3d8ec98dfe75ff1667cb0cd531ec82bb
   sqflite_darwin: 20b2a3a3b70e43edae938624ce550a3cbf66a3d0
   url_launcher_ios: 7a95fa5b60cc718a708b8f2966718e93db0cef1b

lib/common/util/share_util.dart

@@ -0,0 +1,74 @@
+// ignore_for_file: use_build_context_synchronously
+
+import 'dart:typed_data';
+import 'dart:ui' as ui;
+
+import 'package:flutter/rendering.dart';
+import 'package:flutter/widgets.dart';
+import 'package:share_plus/share_plus.dart';
+
+ui.Rect? shareOriginForContext(BuildContext context) {
+  final renderObject = context.findRenderObject();
+  if (renderObject is! RenderBox || !renderObject.hasSize) {
+    return null;
+  }
+  return renderObject.localToGlobal(Offset.zero) & renderObject.size;
+}
+
+Future<Uint8List> captureWidgetPng(
+  GlobalKey key, {
+  double pixelRatio = 3.0,
+}) async {
+  await WidgetsBinding.instance.endOfFrame;
+
+  final context = key.currentContext;
+  if (context == null) {
+    throw StateError('share target is not mounted');
+  }
+
+  final renderObject = context.findRenderObject();
+  if (renderObject is! RenderRepaintBoundary) {
+    throw StateError('share target is not a repaint boundary');
+  }
+
+  final image = await renderObject.toImage(pixelRatio: pixelRatio);
+  final byteData = await image.toByteData(format: ui.ImageByteFormat.png);
+  if (byteData == null) {
+    throw StateError('failed to convert share image');
+  }
+  return byteData.buffer.asUint8List();
+}
+
+Future<void> sharePngFromBoundary(
+  GlobalKey key, {
+  required String fileName,
+  String? text,
+  String? subject,
+  ui.Rect? sharePositionOrigin,
+  double pixelRatio = 3.0,
+}) async {
+  final bytes = await captureWidgetPng(key, pixelRatio: pixelRatio);
+  final xFile = XFile.fromData(bytes, mimeType: 'image/png', name: fileName);
+  await SharePlus.instance.share(
+    ShareParams(
+      files: [xFile],
+      text: text,
+      subject: subject,
+      sharePositionOrigin: sharePositionOrigin,
+    ),
+  );
+}
+
+Future<void> sharePlainText({
+  required String text,
+  String? subject,
+  ui.Rect? sharePositionOrigin,
+}) async {
+  await SharePlus.instance.share(
+    ShareParams(
+      text: text,
+      subject: subject,
+      sharePositionOrigin: sharePositionOrigin,
+    ),
+  );
+}

lib/features/news/presentation/news_detail_page.dart

@@ -2,6 +2,9 @@ import 'package:flutter/material.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:shadcn_ui/shadcn_ui.dart';
 
+import '../../../common/config/app_h5_urls.dart';
+import '../../../common/util/share_util.dart';
+import '../../../common/widgets/app_toast.dart';
 import '../../../common/widgets/prototype_ui.dart';
 import '../application/news_controller.dart';
 
@@ -35,6 +38,33 @@ class NewsDetailPage extends ConsumerWidget {
           item.metal.label,
           style: const TextStyle(fontSize: 17, fontWeight: FontWeight.w600),
         ),
+        actions: [
+          Builder(
+            builder: (buttonContext) => IconButton(
+              onPressed: () async {
+                final shareText = [
+                  item.title,
+                  '${item.source} · ${_timeLabel(item.publishedAt)} · ${item.metal.label}',
+                  item.summary,
+                  '打开金值查看：${AppH5Urls.baseUrl}/news/detail?id=${item.id}',
+                ].join('\n');
+                try {
+                  await sharePlainText(
+                    text: shareText,
+                    subject: item.title,
+                    sharePositionOrigin: shareOriginForContext(buttonContext),
+                  );
+                } catch (e) {
+                  debugPrint('share news failed: $e');
+                  if (!context.mounted) return;
+                  await toastInfo(msg: '分享失败');
+                }
+              },
+              icon: const Icon(Icons.ios_share_outlined, size: 20),
+              color: const Color(0xFF8A8780),
+            ),
+          ),
+        ],
       ),
       body: SafeArea(
         child: ListView(

lib/features/profile/presentation/profile_action_pages.dart

@@ -4,10 +4,13 @@ import 'package:go_router/go_router.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:package_info_plus/package_info_plus.dart';
 import 'package:shadcn_ui/shadcn_ui.dart';
+import 'dart:ui' as ui;
 
 import '../../../common/domain/metal_type.dart';
 import '../../../common/domain/money.dart';
+import '../../../common/widgets/app_toast.dart';
 import '../../../common/router/app_router.dart';
+import '../../../common/util/share_util.dart';
 import '../../../common/widgets/adaptive.dart';
 import '../../../common/widgets/circle_back_button.dart';
 import '../../../common/widgets/prototype_ui.dart';
@@ -44,7 +47,7 @@ class InviteRewardPage extends StatelessWidget {
           ),
           const SizedBox(height: 14),
           FilledButton(
-            onPressed: () => _toast(context, '演示:拉起微信 / 系统分享面板'),
+            onPressed: () => toastInfo(msg: '演示:拉起微信 / 系统分享面板'),
             child: const Text('分享给好友'),
           ),
           const SizedBox(height: 14),
@@ -62,11 +65,42 @@ class InviteRewardPage extends StatelessWidget {
   }
 }
 
-class ShareCardPage extends ConsumerWidget {
+class ShareCardPage extends ConsumerStatefulWidget {
   const ShareCardPage({super.key});
 
   @override
-  Widget build(BuildContext context, WidgetRef ref) {
+  ConsumerState<ShareCardPage> createState() => _ShareCardPageState();
+}
+
+class _ShareCardPageState extends ConsumerState<ShareCardPage> {
+  final GlobalKey _previewKey = GlobalKey();
+  bool _sharing = false;
+
+  Future<void> _shareCard(String owner, {ui.Rect? origin}) async {
+    if (_sharing) return;
+    setState(() => _sharing = true);
+    try {
+      await sharePngFromBoundary(
+        _previewKey,
+        fileName: 'jinzhi_share_card.png',
+        text: '$owner 的贵金属估值卡，已通过金值生成。',
+        subject: '金值贵金属估值卡',
+        sharePositionOrigin: origin ?? shareOriginForContext(context),
+      );
+    } catch (e) {
+      debugPrint('share card failed: $e');
+      await Clipboard.setData(ClipboardData(text: '$owner 的贵金属估值卡，已通过金值生成。'));
+      if (!mounted) return;
+      toastInfo(msg: '图片分享失败，已复制分享文案');
+    } finally {
+      if (mounted) {
+        setState(() => _sharing = false);
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
     final auth = ref.watch(authProvider);
     final currentUser = auth.valueOrNull is LoggedInAuthState
         ? (auth.valueOrNull as LoggedInAuthState).user
@@ -79,7 +113,10 @@ class ShareCardPage extends ConsumerWidget {
       child: Column(
         crossAxisAlignment: CrossAxisAlignment.stretch,
         children: [
-          _SharePreviewCard(owner: owner),
+          RepaintBoundary(
+            key: _previewKey,
+            child: _SharePreviewCard(owner: owner),
+          ),
           const SizedBox(height: 14),
           PrototypeCard(
             padding: EdgeInsets.zero,
@@ -100,13 +137,32 @@ class ShareCardPage extends ConsumerWidget {
             ),
           ),
           const SizedBox(height: 14),
-          FilledButton(
+          Builder(
+            builder: (buttonContext) => FilledButton.icon(
+              onPressed: _sharing
+                  ? null
+                  : () {
+                      final origin = shareOriginForContext(buttonContext);
+                      _shareCard(owner, origin: origin);
+                    },
+              icon: _sharing
+                  ? const SizedBox(
+                      width: 14,
+                      height: 14,
+                      child: CircularProgressIndicator(strokeWidth: 2),
+                    )
+                  : const Icon(Icons.ios_share_outlined),
+              label: Text(_sharing ? '分享中' : '系统分享图片'),
+            ),
+          ),
+          const SizedBox(height: 12),
+          OutlinedButton(
             onPressed: () async {
               await Clipboard.setData(
                 ClipboardData(text: '$owner 的贵金属估值卡，已通过金值生成。'),
               );
               if (!context.mounted) return;
-              _toast(context, '分享文案已复制');
+              toastInfo(msg: '分享文案已复制');
             },
             child: const Text('复制分享文案'),
           ),
@@ -152,7 +208,7 @@ class LocalBackupPage extends StatelessWidget {
           ),
           const SizedBox(height: 14),
           FilledButton(
-            onPressed: () => _toast(context, '已生成本地备份文件'),
+            onPressed: () => toastInfo(msg: '已生成本地备份文件'),
             child: const Text('生成备份'),
           ),
           const SizedBox(height: 12),
@@ -213,7 +269,7 @@ class CloudBackupPage extends ConsumerWidget {
               if (!loggedIn) {
                 context.push(AppRoutes.login);
               } else {
-                _toast(context, '云同步入口已打开');
+                toastInfo(msg: '云同步入口已打开');
               }
             },
             child: Text(loggedIn ? '开启云备份' : '去登录'),
@@ -256,7 +312,7 @@ class WidgetSettingsPage extends StatelessWidget {
           ),
           const SizedBox(height: 14),
           FilledButton(
-            onPressed: () => _toast(context, '演示:打开系统小组件设置'),
+            onPressed: () => toastInfo(msg: '演示:打开系统小组件设置'),
             child: const Text('添加到桌面'),
           ),
         ],
@@ -302,7 +358,7 @@ class PuritySettingsPage extends ConsumerWidget {
                       title: purity,
                       value: (settings.purityPresets[purity] ?? 1)
                           .toStringAsFixed(4),
-                      onTap: () => _toast(context, '演示:自定义「$purity」纯度系数'),
+                      onTap: () => toastInfo(msg: '演示:自定义「$purity」纯度系数'),
                     ),
                     if (purity != group.$2.last)
                       const PrototypeDivider(margin: EdgeInsets.zero),
@@ -599,12 +655,12 @@ class AboutPage extends StatelessWidget {
                 const SizedBox(height: 16),
                 _GoldTextAction(
                   label: '提交意见反馈',
-                  onTap: () => _toast(context, '演示:打开反馈表单'),
+                  onTap: () => toastInfo(msg: '演示:打开反馈表单'),
                 ),
                 const SizedBox(height: 10),
                 _GoldTextAction(
                   label: '检查更新',
-                  onTap: () => _toast(context, '当前已是最新版本'),
+                  onTap: () => toastInfo(msg: '当前已是最新版本'),
                 ),
               ],
             ),
@@ -718,7 +774,7 @@ class _InviteCodeCard extends StatelessWidget {
                       const ClipboardData(text: 'JINZHI-8K3F'),
                     );
                     if (!context.mounted) return;
-                    _toast(context, '已复制邀请码');
+                    toastInfo(msg: '已复制邀请码');
                   },
                   child: const Text(
                     '复制',
@@ -1419,7 +1475,3 @@ class _GoldDot extends StatelessWidget {
     );
   }
 }
-
-void _toast(BuildContext context, String message) {
-  ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(message)));
-}

pubspec.lock

@@ -1267,6 +1267,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.53.6"
+  share_plus:
+    dependency: "direct main"
+    description:
+      name: share_plus
+      sha256: "223873d106614442ea6f20db5a038685cc5b32a2fba81cdecaefbbae0523f7fa"
+      url: "https://pub.dev"
+    source: hosted
+    version: "12.0.2"
+  share_plus_platform_interface:
+    dependency: transitive
+    description:
+      name: share_plus_platform_interface
+      sha256: "88023e53a13429bd65d8e85e11a9b484f49d4c190abbd96c7932b74d6927cc9a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.1.0"
   shared_preferences:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -42,6 +42,7 @@ dependencies:
   url_launcher: ^6.3.1
   gal: ^2.3.2
   image_picker: ^1.1.2
+  share_plus: ^12.0.1
   wechat_assets_picker: ^10.1.2
   flutter_cache_manager: ^3.4.1
   photo_view: ^0.15.0