I have connected an android application to a firebase server and successfully able to signup and login using firebase auth, but i want to display a welcome message in the Home page(this is the page that comes after logging in), how to do it?
This is my login.java page:
package com.example.user.smartkitchen;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.text.TextUtils;
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;
public class Login extends AppCompatActivity {
public Button login,loginResetPass,RegisterLinkButton;
private EditText UserNameTxt, PasswordTxt;
private FirebaseAuth auth;
//private ProgressBar progressBar;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
auth = FirebaseAuth.getInstance();
if (auth.getCurrentUser() != null) {
startActivity(new Intent(Login.this, MainActivity.class));
finish();
}
setContentView(R.layout.activity_login);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
UserNameTxt = (EditText) findViewById(R.id.UserNameTxt);
PasswordTxt = (EditText) findViewById(R.id.PasswordTxt);
//progressBar = (ProgressBar) findViewById(R.id.progressBar);
login = (Button) findViewById(R.id.login);
loginResetPass = (Button) findViewById(R.id.loginResetPass);
RegisterLinkButton = (Button) findViewById(R.id.RegisterLinkButton);
//Get Firebase auth instance
auth = FirebaseAuth.getInstance();
RegisterLinkButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(Login.this, Register.class));
}
});
loginResetPass.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(Login.this, forgotPassword.class));
}
});
login.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String email = UserNameTxt.getText().toString();
final String password = PasswordTxt.getText().toString();
if (TextUtils.isEmpty(email)) {
Toast.makeText(getApplicationContext(), "Enter email address!", Toast.LENGTH_SHORT).show();
return;
}
if (TextUtils.isEmpty(password)) {
Toast.makeText(getApplicationContext(), "Enter password!", Toast.LENGTH_SHORT).show();
return;
}
//progressBar.setVisibility(View.VISIBLE);
//authenticate user
auth.signInWithEmailAndPassword(email, password)
.addOnCompleteListener(Login.this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
// If sign in fails, display a message to the user. If sign in succeeds
// the auth state listener will be notified and logic to handle the
// signed in user can be handled in the listener.
//progressBar.setVisibility(View.GONE);
if (!task.isSuccessful()) {
// there was an error
if (password.length() < 6) {
PasswordTxt.setError(getString(R.string.minimum_password));
} else {
Toast.makeText(Login.this, getString(R.string.auth_failed), Toast.LENGTH_LONG).show();
}
} else {
Intent intent = new Intent(Login.this, Home.class);
startActivity(intent);
finish();
}
}
});
}
});
}
}
This is my register.java page:
package com.example.user.smartkitchen;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ProgressBar;
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;
public class Register extends AppCompatActivity {
public Button Register1;
public ImageButton registerBackButton;
private EditText EmailTxtRegister, PasswordTxtRegister;
private Button Register, ForgotPassButton;
private FirebaseAuth auth;
private ProgressBar progressBar;
public void GoBacktoMain(){
registerBackButton = (ImageButton) findViewById(R.id.registerBackButton);
registerBackButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent toy = new Intent(Register.this,MainActivity.class);
startActivity(toy);
}
});
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
auth = FirebaseAuth.getInstance();
Register = (Button) findViewById(R.id.Register);
EmailTxtRegister = (EditText) findViewById(R.id.EmailTxtRegister);
PasswordTxtRegister = (EditText) findViewById(R.id.PasswordTxtRegister);
ForgotPassButton = (Button) findViewById(R.id.ForgotPassButton);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
ForgotPassButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(Register.this, forgotPassword.class));
}
});
Register.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String email = EmailTxtRegister.getText().toString().trim();
String password = PasswordTxtRegister.getText().toString().trim();
if (TextUtils.isEmpty(email)) {
Toast.makeText(getApplicationContext(), "Enter email address!", Toast.LENGTH_SHORT).show();
return;
}
if (TextUtils.isEmpty(password)) {
Toast.makeText(getApplicationContext(), "Enter password!", Toast.LENGTH_SHORT).show();
return;
}
if (password.length() < 6) {
Toast.makeText(getApplicationContext(), "Password too short, enter minimum 6 characters!", Toast.LENGTH_SHORT).show();
return;
}
progressBar.setVisibility(View.VISIBLE);
//create user
auth.createUserWithEmailAndPassword(email, password)
.addOnCompleteListener(Register.this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
Toast.makeText(Register.this, "createUserWithEmail:onComplete:" + task.isSuccessful(), Toast.LENGTH_SHORT).show();
progressBar.setVisibility(View.GONE);
// If sign in fails, display a message to the user. If sign in succeeds
// the auth state listener will be notified and logic to handle the
// signed in user can be handled in the listener.
if (!task.isSuccessful()) {
Toast.makeText(Register.this, "Authentication failed." + task.getException(),
Toast.LENGTH_SHORT).show();
} else {
startActivity(new Intent(Register.this, Home.class));
finish();
}
}
});
}
});
GoBacktoMain();
}
@Override
protected void onResume() {
super.onResume();
progressBar.setVisibility(View.GONE);
}
}
This is the page in which I need to display the hello message:
package com.example.user.smartkitchen;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageButton;
public class Home extends AppCompatActivity {
public ImageButton BudgetButton;
public ImageButton IngredientsButton;
public ImageButton GasButton;
public ImageButton HomeBackButton;
public void EnterIngredientsFromHome(){
IngredientsButton = (ImageButton) findViewById(R.id.IngredientsButton);
IngredientsButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent toy = new Intent(Home.this,Ingredients.class);
startActivity(toy);
}
});
}
public void EnterGasFromHome(){
GasButton = (ImageButton) findViewById(R.id.GasButton);
GasButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent toy = new Intent(Home.this,Gas.class);
startActivity(toy);
}
});
}
public void EnterBudgetFromHome(){
BudgetButton = (ImageButton) findViewById(R.id.BudgetButton);
BudgetButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent toy = new Intent(Home.this,Budget.class);
startActivity(toy);
}
});
}
public void GoBacktoRegister(){
HomeBackButton = (ImageButton) findViewById(R.id.HomeBackButton);
HomeBackButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent toy = new Intent(Home.this,MainActivity.class);
startActivity(toy);
}
});
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
EnterIngredientsFromHome();
EnterBudgetFromHome();
EnterGasFromHome();
GoBacktoRegister();
}
}
Pls help someone
