CODEWITHSUNDEEP
androidfirebasefirebase-realtime-databasefirebaseui
muchamaze
muchamaze

Reputation: 303

firebase.database.DatabaseException: Failed to convert value of type java.lang.Long to String

[This is the database]

firebase.database.DatabaseException: Failed to convert value of type java.lang.Long to String

I am trying to add this data to a FirebaserecyclerAdapter and getting this error

Here is the database reference 

    databaseReference = FirebaseDatabase.getInstance().getReference().child("questions");

this is how I have used the RecyclerViewAdapter

  FirebaseRecyclerAdapter<History, HistoryViewHolder> firebaseRecyclerAdapter = new FirebaseRecyclerAdapter<History, HistoryViewHolder>(
            History.class, R.layout.history_list_item, HistoryViewHolder.class, databaseReference) {
        @Override
        protected void populateViewHolder(HistoryViewHolder viewHolder, History model, int position) {
            viewHolder.setMyanswer(model.getMyAnswer());
            viewHolder.setCorrentAnswer(model.getCorrectAnswer());
            viewHolder.setImageUrl(getApplicationContext(), model.getImageUrl());

        }
    };
    recyclerView.setAdapter(firebaseRecyclerAdapter);

Upvotes: 4

Views: 11097

Answers (3)

Ty Tee
Ty Tee

Reputation: 1

In Firebase, when creating your DB, specify that the two fields are Strings, either put the figures is double quotes or select String next to the Select data type

Upvotes: 0

Bharathi s
Bharathi s

Reputation: 1

valueX = 21.4;

valueY = 23.5;

Need to change Long to String

String mValuex = String.valueOf(valueX);

String mValuey = String.valueOf(valueY);

myRef.child(username).child("valuex").setValue(mValuex);

myRef.child(username).child("valuey").setValue(mValuey);

Upvotes: 0

Ankur Aggarwal
Ankur Aggarwal

Reputation: 2220

The two nodes in your database indeed have a mismatch of data type :

myAnswer : "21"
myAnswer : 11

If you want this to be a String, it should instead be :

myAnswer : "21"
myAnswer : "11"

Or, have them as long :

myAnswer : 21
myAnswer : 11

Make sure you take care of consistency while adding data

Upvotes: 11

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