Android Question B4A and firebase database.

dim m as map
m.initialize
m.put("fieldname", value)
[,,]
ref.UpdateChilds(m)

package com.google.firebase.quickstart.database;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.quickstart.database.models.User;

public class SignInActivity extends BaseActivity implements View.OnClickListener {

    private static final String TAG = "SignInActivity";

    private DatabaseReference mDatabase;
    private FirebaseAuth mAuth;

    private EditText mEmailField;
    private EditText mPasswordField;
    private Button mSignInButton;
    private Button mSignUpButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sign_in);

        mDatabase = FirebaseDatabase.getInstance().getReference();
        mAuth = FirebaseAuth.getInstance();

        // Views
        mEmailField = (EditText) findViewById(R.id.field_email);
        mPasswordField = (EditText) findViewById(R.id.field_password);
        mSignInButton = (Button) findViewById(R.id.button_sign_in);
        mSignUpButton = (Button) findViewById(R.id.button_sign_up);

        // Click listeners
        mSignInButton.setOnClickListener(this);
        mSignUpButton.setOnClickListener(this);
    }

    @Override
    public void onStart() {
        super.onStart();

        // Check auth on Activity start
        if (mAuth.getCurrentUser() != null) {
            onAuthSuccess(mAuth.getCurrentUser());
        }
    }

    private void signIn() {
        Log.d(TAG, "signIn");
        if (!validateForm()) {
            return;
        }

        showProgressDialog();
        String email = mEmailField.getText().toString();
        String password = mPasswordField.getText().toString();

        mAuth.signInWithEmailAndPassword(email, password)
                .addOnCompleteListener(new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        Log.d(TAG, "signIn:onComplete:" + task.isSuccessful());
                        hideProgressDialog();

                        if (task.isSuccessful()) {
                            onAuthSuccess(task.getResult().getUser());
                        } else {
                            Toast.makeText(SignInActivity.this, "Sign In Failed",
                                    Toast.LENGTH_SHORT).show();
                        }
                    }
                });
    }

    private void signUp() {
        Log.d(TAG, "signUp");
        if (!validateForm()) {
            return;
        }

        showProgressDialog();
        String email = mEmailField.getText().toString();
        String password = mPasswordField.getText().toString();

        mAuth.createUserWithEmailAndPassword(email, password)
                .addOnCompleteListener(new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        Log.d(TAG, "createUser:onComplete:" + task.isSuccessful());
                        hideProgressDialog();

                        if (task.isSuccessful()) {
                            onAuthSuccess(task.getResult().getUser());
                        } else {
                            Toast.makeText(SignInActivity.this, "Sign Up Failed",
                                    Toast.LENGTH_SHORT).show();
                        }
                    }
                });
    }

    private void onAuthSuccess(FirebaseUser user) {
        String username = usernameFromEmail(user.getEmail());

        // Write new user
        writeNewUser(user.getUid(), username, user.getEmail());

        // Go to MainActivity
        startActivity(new Intent(SignInActivity.this, MainActivity.class));
        finish();
    }

    private String usernameFromEmail(String email) {
        if (email.contains("@")) {
            return email.split("@")[0];
        } else {
            return email;
        }
    }

    private boolean validateForm() {
        boolean result = true;
        if (TextUtils.isEmpty(mEmailField.getText().toString())) {
            mEmailField.setError("Required");
            result = false;
        } else {
            mEmailField.setError(null);
        }

        if (TextUtils.isEmpty(mPasswordField.getText().toString())) {
            mPasswordField.setError("Required");
            result = false;
        } else {
            mPasswordField.setError(null);
        }

        return result;
    }

    // [START basic_write]
    private void writeNewUser(String userId, String name, String email) {
        User user = new User(name, email);

        mDatabase.child("users").child(userId).setValue(user);
    }
    // [END basic_write]

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.button_sign_in:
                signIn();
                break;
            case R.id.button_sign_up:
                signUp();
                break;
        }
    }
}

  // [START basic_write]
    private void writeNewUser(String userId, String name, String email) {
        User user = new User(name, email);

        mDatabase.child("users").child(userId).setValue(user);
    }
    // [END basic_write]

    private void writeNewPost(String userId, String username, String title, String body) {
        // Create new post at /user-posts/$userid/$postid and at
        // /posts/$postid simultaneously
        String key = mDatabase.child("posts").push().getKey();
        Post post = new Post(userId, username, title, body);
        Map<String, Object> postValues = post.toMap();

        Map<String, Object> childUpdates = new HashMap<>();
        childUpdates.put("/posts/" + key, postValues);
        childUpdates.put("/user-posts/" + userId + "/" + key, postValues);

        mDatabase.updateChildren(childUpdates);
    }

private void postComment() {
        final String uid = getUid();
        FirebaseDatabase.getInstance().getReference().child("users").child(uid)
                .addListenerForSingleValueEvent(new ValueEventListener() {
                    @Override
                    public void onDataChange(DataSnapshot dataSnapshot) {
                        // Get user information
                        User user = dataSnapshot.getValue(User.class);
                        String authorName = user.username;

                        // Create new comment object
                        String commentText = mCommentField.getText().toString();
                        Comment comment = new Comment(uid, authorName, commentText);

                        // Push the comment, it will appear in the list
                        mCommentsReference.push().setValue(comment);

                        // Clear the field
                        mCommentField.setText(null);
                    }

                    @Override
                    public void onCancelled(DatabaseError databaseError) {

                    }
                });

Sub Activity_Create(FirstTime As Boolean)
    Activity.LoadLayout("testfiba")
    Starter.auth.Initialize("Auth")
End Sub

Sub Button4_Click ' SIGN IN
Log("#-Button4_Click")  
    If Starter.auth.CurrentUser.IsInitialized Then
        Auth_SignedIn(Starter.auth.CurrentUser )
    End If
'  
End Sub

For x=0 To lista.Size-1
             Log("uploading to firebase="&lista.Get(x))
             Storage.UploadFile(File.DirRootExternal,"/DCIM/Camera/"&lista.Get(x),$"/Public/${Pais& DateTime.Date(DateTime.Now)&"/" &lista.Get(x)}"$)
             ref.Initialize("Reference",realtime.getReferencefromUrl("https://sorryITisAlittleSECRET.firebaseio.com/"& Pais&  DateTime.Date(DateTime.now)  &"/" & x   ))  
             ref.setValue(lista.Get(x),"I don't know")
        Next

    ref.Initialize("Reference",realtime.getReferencefromUrl("https://sorryITisAlittleSECRET.firebaseio.com"))
      

    ref.addChildEventListener
    ref.addListenerForSingleValueEvent
    ref.addValueEventListener
    Log("ref imagesizes = "&ref.Child("ve08"))

Sub Button4_Click ' SIGN IN
Log("#-Button4_Click")   
    If Starter.auth.CurrentUser.IsInitialized Then
        Auth_SignedIn(Starter.auth.CurrentUser )
    Else
        Starter.auth.SignInWithGoogle
    End If
'   
End Sub

In Service starter  <-------

Sub Service_Create
    'This is the program entry point.
    'This is a good place to load resources that are not specific to a single activity.
        auth.Initialize("auth")
    If auth.CurrentUser.IsInitialized Then Auth_SignedIn(auth.CurrentUser)

End Sub

Sub Auth_SignedIn (User As FirebaseUser)
    Log("SignedIn: " & User.DisplayName)
'    lblName.Text = "Hello: " & User.DisplayName
End Sub

and in activity testfiba <----
Sub Button4_Click ' SIGN IN
Log("#-Button4_Click")   
    auth.SignInWithGoogle   'I only added  it:D
End Sub