Reading from a simple FireBase Database

Question

I\'m having some issues reading from a Firebase Database.

I have a pretty simple layout

{
  \"lot\" : {
    \"lot1\" : \"low\",
    \"lot2\" : \"low\",
          


        

Answer 1

There's some tweak in your code. Your

FirebaseDatabase database = FirebaseDatabase.getInstance();
DatabaseReference myRef = database.getInstance().getReference();

should be write like this,

DatabaseReference myRef = FirebaseDatabase.getInstance().getReference();
DatabaseReference database = myRef.child("anyValueNameYouSpecifyInConsole");

Those 2 lines should be declare outside onCreate method. The one that you need to specify with addValueEventListener is the 2nd DatabaseReference, not the first one. So, it should looks like this from my example,

database.addValueEventListener (new ValueEventListener) 

and it will import method.

If you wish the data to be displayed in a particular TextView, then just findViewById the TextView you wanna use and include it in onDataChange method like so,

String x = dataSnapshot.getValue(String.class);
textViewNameDeclared.setText(x);

And don't forget to change the security rule for reading.