Agfdhyk

I am trying to recover 6 months old app but I can't build it.

This is a react-native app for Android/iOS. I am using "Android Studio" to build this app.

I can't build the app because it fails to compile:

Compilation failed; see the compiler error output for details.

Compiler errors:

error: cannot find symbol class DocumentListenOptions

error: cannot find symbol class QueryListenOptions

error: cannot find symbol method getDownloadUrl()

Code from error:

import com.facebook.react.bridge.Arguments;

import com.facebook.react.bridge.Promise;

import com.facebook.react.bridge.ReactContext;

import com.facebook.react.bridge.ReadableArray;

import com.facebook.react.bridge.ReadableMap;

import com.facebook.react.bridge.WritableMap;

import com.google.android.gms.tasks.OnCompleteListener;

import com.google.android.gms.tasks.Task;

import com.google.firebase.firestore.DocumentListenOptions;

import com.google.firebase.firestore.EventListener;

import com.google.firebase.firestore.FieldPath;

import com.google.firebase.firestore.FirebaseFirestore;

import com.google.firebase.firestore.FirebaseFirestoreException;

import com.google.firebase.firestore.ListenerRegistration;

import com.google.firebase.firestore.Query;

import com.google.firebase.firestore.QueryListenOptions;

import com.google.firebase.firestore.QuerySnapshot;



public void onSnapshot(final String listenerId, final ReadableMap queryListenOptions) {

if (!collectionSnapshotListeners.containsKey(listenerId)) {

  final EventListener<QuerySnapshot> listener = new EventListener<QuerySnapshot>() {

    @Override

    public void onEvent(QuerySnapshot querySnapshot, FirebaseFirestoreException exception) {

      if (exception == null) {

        handleQuerySnapshotEvent(listenerId, querySnapshot);

      } else {

        ListenerRegistration listenerRegistration = collectionSnapshotListeners.remove(listenerId);

        if (listenerRegistration != null) {

          listenerRegistration.remove();

        }

        handleQuerySnapshotError(listenerId, exception);

      }

    }

  };

  QueryListenOptions options = new QueryListenOptions();

  if (queryListenOptions != null) {

    if (queryListenOptions.hasKey("includeDocumentMetadataChanges")

      && queryListenOptions.getBoolean("includeDocumentMetadataChanges")) {

      options.includeDocumentMetadataChanges();

    }

    if (queryListenOptions.hasKey("includeQueryMetadataChanges")

      && queryListenOptions.getBoolean("includeQueryMetadataChanges")) {

      options.includeQueryMetadataChanges();

    }

  }



  ListenerRegistration listenerRegistration = this.query.addSnapshotListener(options, listener);

  collectionSnapshotListeners.put(listenerId, listenerRegistration);

 }

}

"not a full code, just the place I get an error from"

So it:

• cannot resolve symbol "QueryListenOptions"




• cannot resolve method "includeDocumentMetadataChanges"




• cannot resolve method "addSnapshotListener(options, listener)"

And for this error:

cannot find symbol method getDownloadUrl()

private WritableMap getUploadTaskAsMap(UploadTask.TaskSnapshot taskSnapshot) {

    WritableMap resp = Arguments.createMap();



    if (taskSnapshot != null) {

      resp.putDouble("bytesTransferred", taskSnapshot.getBytesTransferred());

      resp.putString("downloadURL", taskSnapshot.getDownloadUrl() != null ? taskSnapshot.getDownloadUrl().toString() : null);



      StorageMetadata d = taskSnapshot.getMetadata();

      if (d != null) {

        WritableMap metadata = getMetadataAsMap(d);

        resp.putMap("metadata", metadata);

      }



      resp.putString("ref", taskSnapshot.getStorage().getPath());

      resp.putString("state", this.getTaskStatus(taskSnapshot.getTask()));

      resp.putDouble("totalBytes", taskSnapshot.getTotalByteCount());

    }

    return resp;

  }

cannot resolve method "getDownloadUrl"

So if you have any suggestions for these two problems please share your knowledge.

Thank you! :)