如何分享从flutter下载的图片

Question

I use flutter to save a widget as an image in flutter. I have no problem with downloading the image but im having troubke with sharing the image. Is there a way i way share the downlaoded image without leaving the application?

Here's my present code

   onPressed: () async {
    if (await Permission.storage.request().isGranted) {
      screenshotController.capture(pixelRatio: 1.5);
      screenshotController.capture().then((File image) async {
        await ImageGallerySaver.saveImage(image.readAsBytesSync());

        Navigator.of(context, rootNavigator: true).pop();
        Scaffold.of(context).showSnackBar(
          SnackBar(
            content: Text("Image Saved to Gallery"),
            duration: const Duration(seconds: 1),
          ),
        );
      }).catchError((onError) {
//                                    print(onError);
      });
    } else {
      await Permission.storage.request();
    }
  }

Answer 1

You need to handle the image as any other file.

If you do not intend to use a server between the two users, its a bit tricky because one of them must act as one, but if you will use a server, i suggest you to follow this post:

https://dev.to/carminezacc/advanced-flutter-networking-part-1-uploading-a-file-to-a-rest-api-from-flutter-using-a-multi-part-form-data-post-request-2ekm

It's pretty recent and will help you with the app code and even with a server sample writen in nodejs. The next parts of the post teach you to do what you want.