Share url+image+text with Twitter/Facebook/Instagram

问题

Is there any lib/package that will help in both platform iOS and Android to share image+text+url on FB, Twitter And Insta? I have been searing for 4 hours but didn't find any result. https://pub.dev/packages/flutter_share_me this package is only for android so. If you have any solution for it please guide me.

~ PS : I don't want to use Share package, I have buttons of FB, Insta and Twitter. When user will click on any one of the button then data should be share on any of the social media and I need call back of failure or success.

回答1:

Edit
package social_share_plugin https://github.com/romatroskin/social_share_plugin
provide share function and have call back
description page forget to mention twitter already include

full social_share_plugin example code

import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:io';

import 'package:flutter/services.dart';
import 'package:social_share_plugin/social_share_plugin.dart';
import 'package:image_picker/image_picker.dart';

void main() => runApp(MyApp());

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _platformVersion = 'Unknown';

  @override
  void initState() {
    super.initState();
    initPlatformState();
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    String platformVersion;
    // Platform messages may fail, so we use a try/catch PlatformException.
    try {
      platformVersion = await SocialSharePlugin.platformVersion;
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {
      _platformVersion = platformVersion;
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Column(
          children: <Widget>[
            Center(
              child: Text('Running on: $_platformVersion\n'),
            ),
            RaisedButton(
              child: Text('Share to Instagram'),
              onPressed: () async {
                File file = await ImagePicker.pickImage(source: ImageSource.gallery);
                await SocialSharePlugin.shareToFeedInstagram("image/*", file.path);
              },
            ),
            RaisedButton(
              child: Text('Share to Facebook'),
              onPressed: () async {
                File file = await ImagePicker.pickImage(source: ImageSource.gallery);
                await SocialSharePlugin.shareToFeedFacebook('test', file.path);
              },
            ),
            RaisedButton(
              child: Text('Share to Facebook Link'),
              onPressed: () async {
                String url = 'https://flutter.dev/';
                final quote =
                    'Flutter is Google’s portable UI toolkit for building beautiful, natively-compiled applications for mobile, web, and desktop from a single codebase.';
                final result = await SocialSharePlugin.shareToFeedFacebookLink(
                  quote: quote,
                  url: url,
                  onSuccess: (postId) {
                    print('FACEBOOK SUCCESS $postId');
                    return;
                  },
                  onCancel: () {
                    print('FACEBOOK CANCELLED');
                    return;
                  },
                  onError: (error) {
                    print('FACEBOOK ERROR $error');
                    return;
                  },
                );

                print(result);
              },
            ),
            RaisedButton(
              child: Text('Share to Twitter'),
              onPressed: () async {
                String url = 'https://flutter.dev/';
                final text =
                    'Flutter is Google’s portable UI toolkit for building beautiful, natively-compiled applications for mobile, web, and desktop from a single codebase.';
                final result = await SocialSharePlugin.shareToTwitter(
                    text: text,
                    url: url,
                    onSuccess: (_) {
                      print('TWITTER SUCCESS');
                      return;
                    },
                    onCancel: () {
                      print('TWITTER CANCELLED');
                      return;
                    });
                print(result);
              },
            ),
          ],
        ),
      ),
    );
  }
}

You can use package https://pub.dev/packages/esys_flutter_share
github https://github.com/esysberlin/esys-flutter-share
iOS need special action, you can see IMPORTANT Note for iOS

Share text:

Share.text('my text title', 'This is my text to share with other applications.', 'text/plain');

Share file:

final ByteData bytes = await rootBundle.load('assets/image1.png');
await Share.file('esys image', 'esys.png', bytes.buffer.asUint8List(), 'image/png', text: 'My optional text.');

Share files:

final ByteData bytes1 = await rootBundle.load('assets/image1.png');
final ByteData bytes2 = await rootBundle.load('assets/image2.png');
final ByteData bytes3 = await rootBundle.load('assets/addresses.csv');

await Share.files(
    'esys images',
    {
        'esys.png': bytes1.buffer.asUint8List(),
        'bluedan.png': bytes2.buffer.asUint8List(),
        'addresses.csv': bytes3.buffer.asUint8List(),
    },
    '*/*',
    text: 'My optional text.');

Share file from url:

var request = await HttpClient().getUrl(Uri.parse('https://shop.esys.eu/media/image/6f/8f/af/amlog_transport-berwachung.jpg'));
var response = await request.close();
Uint8List bytes = await consolidateHttpClientResponseBytes(response);
await Share.file('ESYS AMLOG', 'amlog.jpg', bytes, 'image/jpg');

official demo

来源：https://stackoverflow.com/questions/58297219/share-urlimagetext-with-twitter-facebook-instagram