I have uploaded some files into Firebase directory and I want to list them and download one by one.There is no API/Documentation fo this.Could you help me ?
As of July 2019, version 18.1.0 of the Cloud Storage SDK now supports listing all objects from a bucket. You simply need to call listAll()
in a StorageReference
:
StorageReference storageRef = FirebaseStorage.getInstance().getReference();
// Now we get the references of these images
storageRef.listAll().addOnSuccessListener(new OnSuccessListener<ListResult>() {
@Override
public void onSuccess(ListResult result) {
for(StorageReference fileRef : result.getItems()) {
// TODO: Download the file using its reference (fileRef)
}
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(Exception exception) {
// Handle any errors
}
});
If you want to download these files, you can use one of the options shown in the Docs.
Please note that in order to use this method, you must opt-in to version 2 of Security Rules, which can be done by making rules_version = '2';
the first line of your security rules:
rules_version = '2';
service cloud.firestore {
match /databases/{database}/documents {
first , you should get the file download Url to retrieve it, the easiest way is to upload a file and generate the download Url in your database, so after that you just go and retrieve each file from the storage like this :
private void downloadFile() {
FirebaseStorage storage = FirebaseStorage.getInstance();
StorageReference storageRef = storage.getReferenceFromUrl("<your_bucket>");
StorageReference islandRef = storageRef.child("file.txt");
File rootPath = new File(Environment.getExternalStorageDirectory(), "file_name");
if(!rootPath.exists()) {
rootPath.mkdirs();
}
final File localFile = new File(rootPath,"imageName.txt");
islandRef.getFile(localFile).addOnSuccessListener(new OnSuccessListener<FileDownloadTask.TaskSnapshot>() {
@Override
public void onSuccess(FileDownloadTask.TaskSnapshot taskSnapshot) {
Log.e("firebase ",";local tem file created created " +localFile.toString());
// updateDb(timestamp,localFile.toString(),position);
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception exception) {
Log.e("firebase ",";local tem file not created created " +exception.toString());
}
});
}
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