CODEWITHSUNDEEP
firebaseflutterfirebase-storage
Pavan Kumar V
Pavan Kumar V

Reputation: 786

How to get file name from the url of the file present in firebase storage in flutter?

I have created a button to download the file from the URL I get from firestore, I need the file name too, is there any way to reference the file using the URL I get? I saw answers to similar questions but couldn't find the proper solution.

This is the type of URL I get

https://firebasestorage.googleapis.com/v0/b/student-app.appspot.com/o/img%2FFileName.pdf?alt=media&token=367f598b-425d-4ce0-be2b-804d2103d69e

is there any way to extract the file name from it? or by any reference method?

Upvotes: 0

Views: 2070

Answers (2)

Nch Mohamed Hichem
Nch Mohamed Hichem

Reputation: 1

there is a simple solution : we suppose the url from fireStore :

final urlExample = https://firebasestorage.googleapis.com/v0/b/example.appspot.com/o/example_images%2F12345%2Fexample.jpg?alt=media&token=3ae5accd-ebdc-4fab-a08e-d8d57059614c

String getFileName(String url) {
 Uri uri = Uri.parse(url);
 String fileName = uri.pathSegments.last.split("/").last;
return fileName;
}
final fileNameFromUrl = getFileName(urlExample);
print(fileNameFromUrl); // example.jpg

Upvotes: 0

Dharmaraj
Dharmaraj

Reputation: 50920

If you don't have the reference to file then you would have to use Regex:

String getFileName(String url) {
  RegExp regExp = new RegExp(r'.+(\/|%2F)(.+)\?.+'); 
  //This Regex won't work if you remove ?alt...token
  var matches = regExp.allMatches(url);

  var match = matches.elementAt(0);
  print("${Uri.decodeFull(match.group(2)!)}");
  return Uri.decodeFull(match.group(2)!);
}

Upvotes: 10

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