I created a app in which i created login and register activity and also coded its java file . when im executing it and clicking on signup after filling all details , App closed suddenly . then i searched the issue in Run panel and its below error . I tried what ever i can do but i couldn't find the main reason. please help me to clear this issue . I'm tried of it. below error is showing in register.java
E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.marvi, PID: 28256 java.lang.NullPointerException: Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText()' on a null object reference at com.example.marvi.register$1.onClick(register.java:67) at android.view.View.performClick(View.java:6256) at com.google.android.material.button.MaterialButton.performClick(MaterialButton.java:992) at android.view.View$PerformClick.run(View.java:24701) at android.os.Handler.handleCallback(Handler.java:789) at android.os.Handler.dispatchMessage(Handler.java:98) at android.os.Looper.loop(Looper.java:164) at android.app.ActivityThread.main(ActivityThread.java:6541) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)can anyone tell me , that why its happen
login.java
package com.example.marvi;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.auth.AuthResult;import com.google.firebase.auth.FirebaseAuth;public class login extends AppCompatActivity { EditText memail , mpass ; FirebaseAuth fAuth; Button mlogin; TextView mcreate , mforgot; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_login); mlogin = findViewById(R.id.signbtn); mcreate = findViewById(R.id.create); mforgot = findViewById(R.id.forgot); fAuth = FirebaseAuth.getInstance(); memail = findViewById(R.id.email); mpass = findViewById(R.id.passbox); mlogin.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String email = memail.getText().toString().trim(); String password = mpass.getText().toString().trim(); if(TextUtils.isEmpty((email))){ memail.setError("E-mail is required"); } if(TextUtils.isEmpty((password))){ memail.setError("Password is required"); } if(password.length() <6){ mpass.setError("Password must be > 6"); } //authenticate fAuth.signInWithEmailAndPassword(email,password).addOnCompleteListener(new OnCompleteListener<AuthResult>() { @Override public void onComplete(@NonNull Task<AuthResult> task) { if(task.isSuccessful()){ Toast.makeText(login.this, "Logged in successfully", Toast.LENGTH_SHORT).show(); startActivity(new Intent(getApplicationContext(),MainActivity.class)); }else{ Toast.makeText(login.this, "Error !"+ task.getException().getMessage(), Toast.LENGTH_SHORT).show(); } } }); } }); mcreate.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { startActivity(new Intent(getApplicationContext(),register.class)); finish(); } }); }}register.java
package com.example.marvi;import androidx.annotation.NonNull;import androidx.appcompat.app.AppCompatActivity;import android.content.Intent;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.TextView;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.firestore.DocumentReference;import com.google.firebase.firestore.FirebaseFirestore;import java.util.HashMap;import java.util.Map;public class register extends AppCompatActivity { public static final String TAG = "TAG"; EditText mfullname,memail,mpass,mphone; FirebaseAuth fAuth; RadioButton mcheckmale,mcheckfemale; String userID; String gender=""; FirebaseFirestore fStore; Button mlogin; TextView mcreate , mforgot; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_register); mfullname = findViewById(R.id.name); memail = findViewById(R.id.email); mpass = findViewById(R.id.pass); mphone = findViewById(R.id.number); mcheckmale= findViewById(R.id.malebtn); mcheckfemale = findViewById(R.id.femalebtn); fStore = FirebaseFirestore.getInstance(); fAuth = FirebaseAuth.getInstance(); mlogin = findViewById(R.id.signbtn); mcreate = findViewById(R.id.create); mforgot = findViewById(R.id.forgot); if(fAuth.getCurrentUser() !=null){ Toast.makeText(register.this, "user created", Toast.LENGTH_SHORT).show(); finish(); } mlogin.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String email = memail.getText().toString().trim(); String password = mpass.getText().toString().trim(); if(TextUtils.isEmpty(email)){ memail.setError("Email is Required."); return; } if(TextUtils.isEmpty(password)){ mpass.setError("Password is Required."); return; } if(password.length() < 6){ mpass.setError("Password Must be >= 6 Characters"); return; } if(mcheckmale.isChecked()){ gender="Male"; } if(mcheckfemale.isChecked()){ gender="Female"; } fAuth.createUserWithEmailAndPassword(email,password).addOnCompleteListener(new OnCompleteListener<AuthResult>() { @Override public void onComplete(@NonNull Task<AuthResult> task) { if(task.isSuccessful()){ Toast.makeText(register.this, "user created", Toast.LENGTH_SHORT).show(); userID = fAuth.getCurrentUser().getUid(); DocumentReference documentReference = fStore.collection("users").document(userID); Map<String,Object> user = new HashMap<>(); user.put("email",email); user.put("pass",password); user.put("gender",gender); documentReference.set(user).addOnCompleteListener(new OnCompleteListener<Void>() { @Override public void onComplete(@NonNull Task<Void> task) { Log.d(TAG, "onSuccess: user profile is created for " +userID); } }); startActivity(new Intent(getApplicationContext(),MainActivity.class)); }else{ Toast.makeText(register.this, "Error !"+task.getException().getMessage(), Toast.LENGTH_SHORT).show(); } } }); } }); mcreate.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { startActivity(new Intent(getApplicationContext(),login.class)); finish(); } }); }}