Pre-requisite for Firebase Database Access
It is recommended to not allow anyone to access Firebase database without any kind of authentication. The minimum that could be done is enable “Anonymous Authentication” by logging in Firebase console.
Java Code Sample for Firebase Database Access
In the code below, note some of the following:
- Code for anonymous authentication
- Code for accessing a user object based on a given userId
Firebase firebase = new Firebase("https://dbname.firebaseio.com/");
firebase.authAnonymously(new Firebase.AuthResultHandler() {
@Override
public void onAuthenticated(AuthData authData) {
// we've authenticated this session with your Firebase app
firebase.child("users/" + userId).addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot snapshot) {
String emailAddress = (String)snapshot.child("emailAddress").getValue();
String firstname = (String)snapshot.child("firstname").getValue();
}
@Override
public void onCancelled(FirebaseError arg0) {
}
});
}
@Override
public void onAuthenticationError(FirebaseError firebaseError) {
// there was an error
}
});
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Hi, i had an error in this statement (firebase.child(“users/” + userId).addListenerForSingleValueEvent(new ValueEventListener() ).
Where did u get the userId??
Can u give us more specification about firebase with desktop application(netbeans)?
Hi, i had an error in this statement (firebase.child(“users/” + userId).addListenerForSingleValueEvent(new ValueEventListener() ).
Where did u get the userId??
Can u give us more specification about firebase with desktop application(netbeans)?