feat(share_plus): add support for action_attach_data

Signed-off-by: vauvenal5 <vauvenal5.ndgme@slmails.com>

Author: vauvenal5

packages/share_plus/share_plus/android/src/main/kotlin/dev/fluttercommunity/plus/share/Share.kt

@@ -66,6 +66,7 @@ internal class Share(
         val paths = (arguments["paths"] as List<*>?)?.filterIsInstance<String>()
         val mimeTypes = (arguments["mimeTypes"] as List<*>?)?.filterIsInstance<String>()
         val fileUris = paths?.let { getUrisForPaths(paths) }
+        val attach = arguments["attach"] as Boolean? ?: false
 
         // Create Share Intent
         val shareIntent = Intent()
@@ -89,10 +90,17 @@ internal class Share(
                     } else {
                         "*/*"
                     }
-                    shareIntent.apply {
-                        action = Intent.ACTION_SEND
-                        type = mimeType
-                        putExtra(Intent.EXTRA_STREAM, fileUris.first())
+                    if (attach) {
+                        shareIntent.apply {
+                            action = Intent.ACTION_ATTACH_DATA
+                            setDataAndType(fileUris.first(), mimeType)
+                        }
+                    } else {
+                        shareIntent.apply {
+                            action = Intent.ACTION_SEND
+                            type = mimeType
+                            putExtra(Intent.EXTRA_STREAM, fileUris.first())
+                        }
                     }
                 }
 

packages/share_plus/share_plus/example/integration_test/share_plus_test.dart

@@ -41,4 +41,17 @@ void main() {
     );
     expect(SharePlus.instance.share(params), isNotNull);
   });
+
+  testWidgets('Can attachXFile created using File.fromData()',
+      (WidgetTester tester) async {
+    final bytes = Uint8List.fromList([1, 2, 3, 4, 5, 6, 7, 8]);
+    final XFile file =
+        XFile.fromData(bytes, name: 'image.jpg', mimeType: 'image/jpeg');
+
+    final params = ShareParams(
+      files: [file],
+      attach: true,
+    );
+    expect(SharePlus.instance.share(params), isNotNull);
+  }, skip: !Platform.isAndroid);
 }

packages/share_plus/share_plus/example/lib/main.dart

@@ -202,6 +202,21 @@ class MyHomePageState extends State<MyHomePage> {
               },
             ),
             const SizedBox(height: 16),
+            Builder(
+              builder: (BuildContext context) {
+                return ElevatedButton(
+                  style: ElevatedButton.styleFrom(
+                    foregroundColor: Theme.of(context).colorScheme.onPrimary,
+                    backgroundColor: Theme.of(context).colorScheme.primary,
+                  ),
+                  onPressed: () {
+                    _onShareXFileFromAssets(context, attach: true);
+                  },
+                  child: const Text('Attach XFile from Assets'),
+                );
+              },
+            ),
+            const SizedBox(height: 16),
             Builder(
               builder: (BuildContext context) {
                 return ElevatedButton(
@@ -293,7 +308,10 @@ class MyHomePageState extends State<MyHomePage> {
     scaffoldMessenger.showSnackBar(getResultSnackBar(shareResult));
   }
 
-  void _onShareXFileFromAssets(BuildContext context) async {
+  void _onShareXFileFromAssets(
+    BuildContext context, {
+    bool attach = false,
+  }) async {
     final box = context.findRenderObject() as RenderBox?;
     final scaffoldMessenger = ScaffoldMessenger.of(context);
     try {
@@ -311,6 +329,7 @@ class MyHomePageState extends State<MyHomePage> {
           sharePositionOrigin: box!.localToGlobal(Offset.zero) & box.size,
           downloadFallbackEnabled: true,
           excludedCupertinoActivities: excludedCupertinoActivityType,
+          attach: attach,
         ),
       );
       scaffoldMessenger.showSnackBar(getResultSnackBar(shareResult));

packages/share_plus/share_plus/lib/share_plus.dart

@@ -99,6 +99,12 @@ class SharePlus {
       );
     }
 
+    if (params.attach && (params.files?.length ?? 0) != 1) {
+      throw ArgumentError(
+        'Exactly one file must be provided when attach is true.',
+      );
+    }
+
     return _platform.share(params);
   }
 }

packages/share_plus/share_plus/test/share_plus_test.dart

@@ -56,6 +56,25 @@ void main() {
       );
     });
 
+    test(
+        'share throws ArgumentError if attach is true but no files are provided',
+        () async {
+      expect(
+        () => sharePlus.share(ShareParams(files: [], attach: true)),
+        throwsA(isA<ArgumentError>()),
+      );
+    });
+
+    test(
+        'share throws ArgumentError if attach is true and more then one file is provided',
+        () async {
+      expect(
+        () => sharePlus.share(
+            ShareParams(files: [XFile('path'), XFile('path')], attach: true)),
+        throwsA(isA<ArgumentError>()),
+      );
+    });
+
     test('share calls platform share method with correct params', () async {
       final params = ShareParams(text: 'text');
       final result = await sharePlus.share(params);

packages/share_plus/share_plus_platform_interface/lib/method_channel/method_channel_share.dart

@@ -41,6 +41,7 @@ class MethodChannelShare extends SharePlatform {
       if (params.subject != null) 'subject': params.subject,
       if (params.title != null) 'title': params.title,
       if (params.uri != null) 'uri': params.uri.toString(),
+      'attach': params.attach,
     };
 
     if (params.sharePositionOrigin != null) {

packages/share_plus/share_plus_platform_interface/lib/platform_interface/share_plus_platform.dart

@@ -142,6 +142,13 @@ class ShareParams {
   ///   Parameter ignored on other platforms.
   final List<CupertinoActivityType>? excludedCupertinoActivities;
 
+  /// Whether to attach or share data. Will open ACTION_ATTACH_DATA intent on Android instead of ACTION_SEND.
+  /// Requires exactly on file to be provided.
+  ///
+  /// * Supported platforms: Android
+  ///   Parameter ignored on other platforms.
+  final bool attach;
+
   ShareParams({
     this.text,
     this.subject,
@@ -154,6 +161,7 @@ class ShareParams {
     this.downloadFallbackEnabled = true,
     this.mailToFallbackEnabled = true,
     this.excludedCupertinoActivities,
+    this.attach = false,
   });
 }