flutter_social_share_plus

A Flutter plugin for sharing content to Instagram and Facebook on Android and iOS.

Features

Feature	Android	iOS
Instagram Direct (text)	✅	✅
Instagram Feed (image/video)	✅	✅
Instagram Feed (multiple files)	✅	✅
Instagram Reels (video)	✅	✅
Instagram Stories	✅	✅
Facebook Feed (photos + hashtag)	✅	✅
Facebook Stories	✅	✅
System Share Sheet	✅	✅
Check installed apps	✅	✅

Installation

dependencies:
  flutter_social_share_plus: ^0.1.0

---

Android Setup

1. Add Facebook SDK dependency

In your app's android/app/build.gradle:

dependencies {
    implementation 'com.facebook.android:facebook-android-sdk:latest.release'
}

2. Add FileProvider

In android/app/src/main/AndroidManifest.xml, add inside <application>:

<provider
    android:name="androidx.core.content.FileProvider"
    android:authorities="${applicationId}.provider"
    android:exported="false"
    android:grantUriPermissions="true">
    <meta-data
        android:name="android.support.FILE_PROVIDER_PATHS"
        android:resource="@xml/file_paths" />
</provider>

Create android/app/src/main/res/xml/file_paths.xml:

<?xml version="1.0" encoding="utf-8"?>
<paths>
    <cache-path name="cache" path="." />
    <external-path name="external" path="." />
</paths>

3. Register Facebook App (required for Facebook features)

Create android/app/src/main/res/values/strings.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="facebook_app_id">YOUR_FACEBOOK_APP_ID</string>
    <string name="facebook_client_token">YOUR_FACEBOOK_CLIENT_TOKEN</string>
</resources>

Get your App ID and Client Token from Meta for Developers → Your App → Settings → Basic / Advanced → Security.

Add inside <application> in AndroidManifest.xml:

<meta-data
    android:name="com.facebook.sdk.ApplicationId"
    android:value="@string/facebook_app_id" />
<meta-data
    android:name="com.facebook.sdk.ClientToken"
    android:value="@string/facebook_client_token" />
<activity
    android:name="com.facebook.FacebookActivity"
    android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize|orientation"
    android:label="@string/app_name" />
<provider
    android:name="com.facebook.FacebookContentProvider"
    android:authorities="com.facebook.app.FacebookContentProvider${facebook_app_id}"
    android:exported="true" />

---

iOS Setup

Minimum Flutter version: 3.41.0 Minimum deployment target: iOS 15.0

The Facebook SDK (FBSDKCoreKit and FBSDKShareKit) is included automatically through Swift Package Manager on Flutter projects with SPM enabled, and CocoaPods remains supported for projects that have not migrated yet.

1. Add URL schemes to Info.plist

<key>CFBundleURLTypes</key>
<array>
    <dict>
        <key>CFBundleURLSchemes</key>
        <array>
            <string>fbYOUR_FACEBOOK_APP_ID</string>
        </array>
    </dict>
</array>

<key>LSApplicationQueriesSchemes</key>
<array>
    <string>instagram</string>
    <string>instagram-stories</string>
    <string>fb</string>
    <string>fb-messenger</string>
    <string>facebook-stories</string>
    <string>fbauth2</string>
    <string>fbapi</string>
    <string>fbshareextension</string>
</array>

2. Add Facebook credentials to Info.plist

<key>FacebookAppID</key>
<string>YOUR_FACEBOOK_APP_ID</string>
<key>FacebookClientToken</key>
<string>YOUR_FACEBOOK_CLIENT_TOKEN</string>
<key>FacebookDisplayName</key>
<string>YOUR_APP_NAME</string>

3. Add photo library usage description to Info.plist

Required for Instagram Feed sharing (media is saved to the photo library first):

<key>NSPhotoLibraryUsageDescription</key>
<string>Required to share media to Instagram</string>
<key>NSPhotoLibraryAddUsageDescription</key>
<string>Required to save media for sharing</string>

4. Initialize Facebook SDK in AppDelegate.swift

import UIKit
import Flutter
import FBSDKCoreKit

@main
@objc class AppDelegate: FlutterAppDelegate {
    override func application(
        _ application: UIApplication,
        didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
    ) -> Bool {
        ApplicationDelegate.shared.application(
            application,
            didFinishLaunchingWithOptions: launchOptions
        )
        GeneratedPluginRegistrant.register(with: self)
        return super.application(application, didFinishLaunchingWithOptions: launchOptions)
    }

    override func application(
        _ app: UIApplication,
        open url: URL,
        options: [UIApplication.OpenURLOptionsKey: Any] = [:]
    ) -> Bool {
        ApplicationDelegate.shared.application(app, open: url, options: options)
    }
}

---

Usage

import 'package:flutter_social_share_plus/flutter_social_share_plus.dart';

// Check which apps are installed
final apps = await SocialSharePlus.getInstalledApps();
// apps = {SocialPlatform.instagram: true, SocialPlatform.facebook: false}

// Share to Instagram Feed
final result = await SocialSharePlus.instagramFeed(filePath: '/path/to/image.jpg');

// Share to Instagram Story
await SocialSharePlus.instagramStory(
  config: StoryConfig(
    appId: 'YOUR_FACEBOOK_APP_ID',
    backgroundTopColor: '#FF5733',
    backgroundBottomColor: '#3366FF',
    stickerImage: '/path/to/sticker.png', // optional
  ),
);

// Share to Facebook Feed
await SocialSharePlus.facebookFeed(
  filePaths: ['/path/to/photo.jpg'],
  hashtag: '#flutter',
);

// System share sheet
await SocialSharePlus.shareSystem(
  text: 'Check this out!',
  filePaths: ['/path/to/file.jpg'],
);

// Handle results
switch (result) {
  case ShareSuccess():
    print('Shared successfully');
  case ShareError(:final message):
    print('Error: $message');
  case ShareAppNotInstalled():
    print('App not installed');
  case ShareCancelled():
    print('User cancelled');
}

---

Notes

• Facebook Feed on Android uses the Facebook Android SDK's native share dialog. The app must be registered on Meta for Developers.
• Instagram Feed on iOS saves media to the photo library before sharing — NSPhotoLibraryUsageDescription is required.
• Instagram Feed multiple files on iOS: only the first file is shared (iOS limitation).
• Facebook/Instagram Stories share via deep-link intent — no SDK callback is returned, so the result is always ShareSuccess if the app is installed.