Register

package com.example.ronel.finalapp;

import android.content.DialogInterface;
import android.os.Build;
import android.support.annotation.NonNull;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
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;

public class Register extends AppCompatActivity {

    RadioButton rb1,rb2;
    EditText etName,etMail,etPass,etPhone;
    Button btn;
    String name,mail,pass,phone;
    Boolean sex;
    private FirebaseAuth mAuth;
    DatabaseReference myRef;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);
        rb1 = findViewById(R.id.rb1);
        rb2 = findViewById(R.id.rb2);

        btn = findViewById(R.id.btn);

        etName = findViewById(R.id.etName);
        etMail = findViewById(R.id.etMail);
        etPass = findViewById(R.id.etPass);
        etPhone = findViewById(R.id.etPhone);

        mAuth = FirebaseAuth.getInstance();
    }

    //Get the information from user
    public void function(View view) {
        name = etName.getText().toString();
        mail = etMail.getText().toString();
        pass = etPass.getText().toString();
        phone = etPhone.getText().toString();

        //Check if information is valid
        if (TextUtils.isEmpty(name)) {
            Toast.makeText(this, "Enter name", Toast.LENGTH_SHORT).show();
            return;
        }
        if (name.length() < 2) {
            Toast.makeText(this, "Name to short", Toast.LENGTH_SHORT).show();
            return;
        }
        if (TextUtils.isEmpty(mail)) {
            Toast.makeText(this, "Enter email", Toast.LENGTH_SHORT).show();
            return;
        }
        if (mail.equals("admin@admin.com")) {
            Toast.makeText(this, "Change email", Toast.LENGTH_SHORT).show();
            return;
        }
        if (TextUtils.isEmpty(pass)) {
            Toast.makeText(this, "Enter password", Toast.LENGTH_SHORT).show();
            return;
        }
        if (TextUtils.isEmpty(phone)) {
            Toast.makeText(this, "Enter phone", Toast.LENGTH_SHORT).show();
            return;
        }
        if (phone.length() != 10) {
            Toast.makeText(this, "Phone number needs to be 10 digits", Toast.LENGTH_SHORT).show();
            return;
        }
        if ((!rb1.isChecked()) && (!rb2.isChecked())) {
            Toast.makeText(this, "Choose gender", Toast.LENGTH_SHORT).show();
            return;
        }
        if (rb1.isChecked()) {
            sex = true;
        } else {
            sex = false;
        }
        Log.d(name, "name is:");
        Log.d(mail, "mail is:");
        Log.d(pass, "password is:");
        Log.d(phone, "phone is:");
        Log.d(String.valueOf(sex), "gender is:");
        //End of first section

        //Get conformation from user to send data
        AlertDialog.Builder builder;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            builder = new AlertDialog.Builder(Register.this, android.R.style.Theme_Material_Dialog_Alert);
        } else {
            builder = new AlertDialog.Builder(Register.this);
        }
        builder.setTitle("Send data")
                .setMessage("Are you sure you want to send data?" + "Email: " + mail + " Password: " + pass)
                .setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                        // continue with sending to DataBase
                        send_to_data_base();
                    }
                })
                .setNegativeButton(android.R.string.no, new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                        // do nothing
                    }
                })
                .setIcon(android.R.drawable.ic_dialog_alert)
                .show();
    }
        //Send data to data-base
        private void send_to_data_base() {
        //Create user in authentication
            mAuth.createUserWithEmailAndPassword(mail, pass)
                    .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                        @Override
                        public void onComplete(@NonNull Task<AuthResult> task) {
                            if (task.isSuccessful()) {
                                // Sign in success
                                Log.d("success", "createUserWithEmail:success");
                                FirebaseUser user = mAuth.getInstance().getCurrentUser();
                                Toast.makeText(Register.this, "Registered successfully", Toast.LENGTH_SHORT).show();
                                String uid = user.getUid();
                                Log.d("uid", uid);

                                //Create user in data base
                                User user1 = new User(name, uid, sex, phone, 0);
                                Log.d("user1.tostring()", user1.toString());
                                //send info
                                myRef = FirebaseDatabase.getInstance().getReference("users");
                                myRef.child(uid).setValue(user1);
                            } else {
                                // If sign in fails, display a message to the user.
                                Log.w("fail", "createUserWithEmail:failure", task.getException());
                                Toast.makeText(Register.this, "Authentication failed", Toast.LENGTH_SHORT).show();
                            }
                        }
                    });
        }
}