How you can store an image in Cloud Firestore using Flutter

pubspec.yaml

dependencies:
  cloud_firestore: ^0.14.0+2
  firebase_storage: ^4.0.0

upload.dart

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_storage/firebase_storage.dart';

String filePath = 'images/my_image.jpg';
File imageFile = File(filePath);
StorageReference storageRef = FirebaseStorage.instance.ref().child(filePath);
StorageUploadTask uploadTask = storageRef.putFile(imageFile);

// Wait for the upload to complete
await uploadTask.onComplete;

// Get the URL for the uploaded image
String imageUrl = await storageRef.getDownloadURL();

await Firestore.instance.collection('images').add({
  'url': imageUrl
});