CODEWITHSUNDEEP
firebaseflutterurlreferencefirebase-storage
killian
killian

Reputation: 55

Flutter : getDownloadUrl (firebase storage)

I have a problem with my flutter application. I want to upload an image to firebase storage and get the URL but the getDownloadUrl method doesn't work. Here is my code :

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

...

Future<String> addImage(File file, firebase_storage.Reference reference) async{
  firebase_storage.UploadTask task = reference.putFile(file);
  firebase_storage.TaskSnapshot snapshot = task.snapshot;
  String urlString = await snapshot.ref.getDownloadURL();
  return urlString;
}

I think it's because of the new version of firebase_storage(5.2.0)

Upvotes: 0

Views: 1438

Answers (2)

Mayb3Not
Mayb3Not

Reputation: 480

You have to wait for the firebase to store the image then only call getUrl by using await. Similarly, check out this link:https://stackoverflow.com/a/52714376/5408464

   Future<String> addImage(File file, firebase_storage.Reference reference) async{
  final task = await reference.putFile(file);
  final urlString = await (await task.onComplete).ref.getDownloadURL().toString();
  return urlString;
}

Upvotes: 3

Stefano Amorelli
Stefano Amorelli

Reputation: 4854

We need to wait for the UploadTask to complete, as per the source code below:

Future<String> addImage(File file, firebase_storage.Reference reference) async{
  firebase_storage.UploadTask task = reference.putFile(file);
  String urlString = await (await task.whenComplete).ref.getDownloadURL().toString();
  await task.whenComplete(() async {
      urlString = await task.ref.getDownloadURL();
  }).catchError((onError) {
    print(onError);
  });
  return urlString;
}

Upvotes: -1

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