added single share

android/app/src/main/java/deckers/thibault/aves/MainActivity.java

@@ -38,6 +38,7 @@ import java.util.stream.Collectors;
 
 import deckers.thibault.aves.model.ImageEntry;
 import deckers.thibault.aves.model.provider.MediaStoreImageProvider;
+import deckers.thibault.aves.utils.ShareUtils;
 import deckers.thibault.aves.utils.Utils;
 import io.flutter.app.FlutterActivity;
 import io.flutter.plugin.common.MethodChannel;
@@ -102,10 +103,16 @@ public class MainActivity extends FlutterActivity {
                         case "cancelGetImageBytes": {
                             String uri = call.argument("uri");
                             thumbnailFetcher.cancel(uri);
-                            // do not send `null`, as it closes the channel
+                            result.success(null);
-                            result.success("");
                             break;
                         }
+                        case "share": {
+                            String title = call.argument("title");
+                            Uri uri = Uri.parse(call.argument("uri"));
+                            String mimeType = call.argument("mimeType");
+                            ShareUtils.share(this, title, uri, mimeType);
+                            result.success(null);
+                        }
                         default:
                             result.notImplemented();
                             break;

android/app/src/main/java/deckers/thibault/aves/utils/ShareUtils.java

@@ -0,0 +1,14 @@
+package deckers.thibault.aves.utils;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.net.Uri;
+
+public class ShareUtils {
+    public static void share(Activity activity, String title, Uri uri, String mimeType) {
+        Intent intent = new Intent(Intent.ACTION_SEND);
+        intent.putExtra(Intent.EXTRA_STREAM, uri);
+        intent.setType(mimeType);
+        activity.startActivity(Intent.createChooser(intent, title));
+    }
+}

lib/model/image_fetcher.dart

@@ -55,4 +55,16 @@ class ImageFetcher {
     }
     return Map();
   }
+
+  static share(String uri, String mimeType) async {
+    try {
+      await platform.invokeMethod('share', <String, dynamic>{
+        'title': 'Share via:',
+        'uri': uri,
+        'mimeType': mimeType,
+      });
+    } on PlatformException catch (e) {
+      debugPrint('share failed with exception=${e.message}');
+    }
+  }
 }