How to upload image into a folder in firebase storage - firebase

Question

I'm writing an app that selects an image from gallery and uuploads into a folder in firestore.
await Future.forEach(_paths.entries, (v) async {
String uid = Uuid().v1();
StorageReference imgReference =
_storageReference.child("Form2").child(uid);
StorageUploadTask task = imgReference.putFile(
File(v.value)
);
StorageTaskSnapshot downloadURL = await
task.onComplete;
String value = await downloadURL.ref.getDownloadURL();
paths[uid] = value;
}
The image is not uploading into the folder. But it is uploading into the firestore directly

Answer 1

You'll have to specify the folder name in .child(). Like : .child("/$folder").child("$fileName").
Example :
StorageReference ref = FirebaseStorage.instance.ref().child('/$folder').child(fileName);
StorageUploadTask uploadTask = ref.putData(imageData);
print('Upload triggered in the background.');
...
return await (await uploadTask.onComplete).ref.getDownloadURL();
}

Answer 2

This is a code that upload an image with its name to firebase. Sliderutils is a class that has a getName() and getImageUrl() function (getters and setters).
StorageReference Ref=
mStorageRef.child(System.currentTimeMillis()+"."+getPath(filePath));
mStorageTask = Ref.putFile(filePath)
.addOnSuccessListener(new
OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
Toast.makeText(MainActivity.this, "Image uploaded successfully.", Toast.LENGTH_LONG).show();
SliderUtils sliderUtils = new SliderUtils(EditTextName.getText().toString().trim(),
taskSnapshot.getDownloadUrl().toString());
String uploadId = mDatabaseRef.push().getKey();
mDatabaseRef.child(uploadId).setValue(sliderUtils);
}
})
.addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception exception) {
Toast.makeText(MainActivity.this,"Image upload failed.",Toast.LENGTH_SHORT).show();
}
})

Answer 3

Accounting to firebase docs the easiest way is to add a child to storage reference:
uploadImageToFireStore(String foldername, String fileName) async {
// Upload image to firebase storage
final storageRef = FirebaseStorage.instance.ref().child("$foldername/$fileName");
await storageRef.putFile(imgPath!);
}
This function receive a folder name and file name to upload the file.
Hope this will help
Good luck