I'm a beginner in android studio,and for the following bit of code
package com.example.petsstork;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.analytics.FirebaseAnalytics;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
public class registrationactivity extends AppCompatActivity {
private EditText emailTextView, passwordTextView;
private Button Btn2;
private FirebaseAuth mAuth;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_registrationactivity);
// taking FirebaseAuth instance
mAuth = FirebaseAuth.getInstance();
// initialising all views through id defined above
emailTextView = findViewById(R.id.email);
passwordTextView = findViewById(R.id.passwd);
Btn2 = findViewById(R.id.regitrbtn);
// Set on Click Listener on Registration button
Btn2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v)
{
registerNewUser();
}
});
}
private void registerNewUser()
{
// show the visibility of progress bar to show loadin
// Take the value of two edit texts in Strings
String email, password;
EditText emailTextView = findViewById(R.id.email);
EditText passwordTextView = findViewById(R.id.passwd);
email = emailTextView.getText().toString();
Button btn2;
password = passwordTextView.getText().toString();
// Validations for input email and password
if (TextUtils.isEmpty(email)) {
Toast.makeText(getApplicationContext(),
"Please enter email!!",
Toast.LENGTH_LONG)
.show();
return;
}
if (TextUtils.isEmpty(password)) {
Toast.makeText(getApplicationContext(),
"Please enter password!!",
Toast.LENGTH_LONG)
.show();
return;
}
// create new user or register new user
mAuth.createUserWithEmailAndPassword(email, password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task)
{
if (task.isSuccessful()) {
Toast.makeText(getApplicationContext(),
"Registration successful!",
Toast.LENGTH_LONG)
.show();
// hide the progress bar
// if the user created intent to login activity
Intent intent = new Intent(registrationactivity.this, MainActivity.class);
startActivity(intent);
}
else {
// Registration failed
Toast.makeText(
getApplicationContext(),
"Registration failed!!"
+ " Please try again later",
Toast.LENGTH_LONG)
.show();
// hide the progress bar
}
}
});
}
// Take the value of two
} '''
Im getting the following error Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText()' on a null object reference at com.example.petsstork.registrationactivity.registerNewUser(registrationactivity.java:57) at com.example.petsstork.registrationactivity.access$000(registrationactivity.java:21) at com.example.petsstork.registrationactivity$1.onClick(registrationactivity.java:45) at android.view.View.performClick(View.java:7448) at com.google.android.material.button.MaterialButton.performClick(MaterialButton.java:1194) at android.view.View.performClickInternal(View.java:7425) at android.view.View.access$3600(View.java:810) at android.view.View$PerformClick.run(View.java:28305) at android.os.Handler.handleCallback(Handler.java:938) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:223) at android.app.ActivityThread.main(ActivityThread.java:7656) at java.lang.reflect.Method.invoke(Method.java) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
