android studios display name instead of email : How do i make the following code display the name as a welcome instead of the email?? When i just change EMAIL to Name it displys null instead of the name. Any help much appreciated.
Ive tried changing email to name but this dosent work i dont know what else to do.
    UsersActivity.java (this is what i want to change so it displays the name instead of email)
    
    package com.delaroystudios.sqlitelogin.activities;
    
    import android.os.Bundle;
    import android.support.v7.app.AppCompatActivity;
    import android.widget.TextView;
    
    import com.delaroystudios.sqlitelogin.R;
    
    
    public class UsersActivity extends AppCompatActivity {
    
        private TextView textViewName;
    
        @Override
        protected void onCreate(Bundle savedInstanceState){
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_users);
    
            textViewName = (TextView) findViewById(R.id.text1);
            String nameFromIntent = getIntent().getStringExtra("NAME");
            textViewName.setText("Welcome " + nameFromIntent);
        }
    }
    
    LoginActivity.java
    package com.delaroystudios.sqlitelogin.activities;
    
    import android.content.Intent;
    import android.support.design.widget.Snackbar;
    import android.support.design.widget.TextInputEditText;
    import android.support.design.widget.TextInputLayout;
    import android.support.v4.widget.NestedScrollView;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.support.v7.widget.AppCompatButton;
    import android.support.v7.widget.AppCompatTextView;
    import android.view.View;
    
    import com.delaroystudios.sqlitelogin.R;
    import com.delaroystudios.sqlitelogin.helper.InputValidation;
    import com.delaroystudios.sqlitelogin.sql.DatabaseHelper;
    
    public class LoginActivity extends AppCompatActivity implements View.OnClickListener {
    
        private final AppCompatActivity activity = LoginActivity.this;
    
        private NestedScrollView nestedScrollView;
    
        private TextInputLayout textInputLayoutEmail;
        private TextInputLayout textInputLayoutPassword;
    
        private TextInputEditText textInputEditTextEmail;
        private TextInputEditText textInputEditTextPassword;
    
        private AppCompatButton appCompatButtonLogin;
    
        private AppCompatTextView textViewLinkRegister;
    
        private InputValidation inputValidation;
        private DatabaseHelper databaseHelper;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_login);
            getSupportActionBar().hide();
    
            initViews();
            initListeners();
            initObjects();
        }
        private void initViews(){
            nestedScrollView = (NestedScrollView) findViewById(R.id.nestedScrollView);
    
            textInputLayoutEmail = (TextInputLayout) findViewById(R.id.textInputLayoutEmail);
            textInputLayoutPassword = (TextInputLayout) findViewById(R.id.textInputLayoutPassword);
    
            textInputEditTextEmail = (TextInputEditText) findViewById(R.id.textInputEditTextEmail);
            textInputEditTextPassword = (TextInputEditText) findViewById(R.id.textInputEditTextPassword);
    
            appCompatButtonLogin = (AppCompatButton) findViewById(R.id.appCompatButtonLogin);
    
            textViewLinkRegister = (AppCompatTextView) findViewById(R.id.textViewLinkRegister);
        }
    
        private void initListeners(){
            appCompatButtonLogin.setOnClickListener(this);
            textViewLinkRegister.setOnClickListener(this);
        }
    
        private void initObjects(){
            databaseHelper = new DatabaseHelper(activity);
            inputValidation = new InputValidation(activity);
        }
    
        @Override
        public void onClick(View v){
            switch (v.getId()){
                case R.id.appCompatButtonLogin:
                    verifyFromSQLite();
                    break;
                case R.id.textViewLinkRegister:
                    Intent intentRegister = new Intent(getApplicationContext(), RegisterActivity.class);
                    startActivity(intentRegister);
                    break;
            }
        }
    
        private void verifyFromSQLite(){
            if (!inputValidation.isInputEditTextFilled(textInputEditTextEmail, textInputLayoutEmail, getString(R.string.error_message_email))) {
                return;
            }
            if (!inputValidation.isInputEditTextEmail(textInputEditTextEmail, textInputLayoutEmail, getString(R.string.error_message_email))) {
                return;
            }
            if (!inputValidation.isInputEditTextFilled(textInputEditTextPassword, textInputLayoutPassword, getString(R.string.error_message_email))) {
                return;
            }
    
            if (databaseHelper.checkUser(textInputEditTextEmail.getText().toString().trim()
                    , textInputEditTextPassword.getText().toString().trim())) {
                Intent accountsIntent = new Intent(activity, UsersActivity.class);
                accountsIntent.putExtra("EMAIL", textInputEditTextEmail.getText().toString().trim());
                emptyInputEditText();
                startActivity(accountsIntent);
            }
    
            else {
                Snackbar.make(nestedScrollView, getString(R.string.error_valid_email_password), Snackbar.LENGTH_LONG).show();
            }
        }
    
        private void emptyInputEditText(){
            textInputEditTextEmail.setText(null);
            textInputEditTextPassword.setText(null);
        }
    }
    
    RegisterActivity.java
    package com.delaroystudios.sqlitelogin.activities;
    
    import android.os.Bundle;
    import android.support.design.widget.Snackbar;
    import android.support.design.widget.TextInputEditText;
    import android.support.design.widget.TextInputLayout;
    import android.support.v4.widget.NestedScrollView;
    import android.support.v7.app.AppCompatActivity;
    import android.support.v7.widget.AppCompatButton;
    import android.support.v7.widget.AppCompatTextView;
    import android.view.View;
    
    import com.delaroystudios.sqlitelogin.R;
    import com.delaroystudios.sqlitelogin.helper.InputValidation;
    import com.delaroystudios.sqlitelogin.model.User;
    import com.delaroystudios.sqlitelogin.sql.DatabaseHelper;
    
    
    public class RegisterActivity extends AppCompatActivity implements View.OnClickListener {
    
        private final AppCompatActivity activity = RegisterActivity.this;
    
        private NestedScrollView nestedScrollView;
    
        private TextInputLayout textInputLayoutName;
        private TextInputLayout textInputLayoutEmail;
        private TextInputLayout textInputLayoutPassword;
        private TextInputLayout textInputLayoutConfirmPassword;
    
        private TextInputEditText textInputEditTextName;
        private TextInputEditText textInputEditTextEmail;
        private TextInputEditText textInputEditTextPassword;
        private TextInputEditText textInputEditTextConfirmPassword;
    
        private AppCompatButton appCompatButtonRegister;
        private AppCompatTextView appCompatTextViewLoginLink;
    
        private InputValidation inputValidation;
        private DatabaseHelper databaseHelper;
        private User user;
    
        @Override
        protected void onCreate(Bundle savedInstanceState){
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_register);
            getSupportActionBar().hide();
    
            initViews();
            initListeners();
            initObjects();
        }
    
        private void initViews(){
            nestedScrollView = (NestedScrollView) findViewById(R.id.nestedScrollView);
    
            textInputLayoutName = (TextInputLayout) findViewById(R.id.textInputLayoutName);
            textInputLayoutEmail = (TextInputLayout) findViewById(R.id.textInputLayoutEmail);
            textInputLayoutPassword = (TextInputLayout) findViewById(R.id.textInputLayoutPassword);
            textInputLayoutConfirmPassword = (TextInputLayout) findViewById(R.id.textInputLayoutConfirmPassword);
    
            textInputEditTextName = (TextInputEditText) findViewById(R.id.textInputEditTextName);
            textInputEditTextEmail = (TextInputEditText) findViewById(R.id.textInputEditTextEmail);
            textInputEditTextPassword = (TextInputEditText) findViewById(R.id.textInputEditTextPassword);
            textInputEditTextConfirmPassword = (TextInputEditText) findViewById(R.id.textInputEditTextConfirmPassword);
    
            appCompatButtonRegister = (AppCompatButton) findViewById(R.id.appCompatButtonRegister);
    
            appCompatTextViewLoginLink = (AppCompatTextView) findViewById(R.id.appCompatTextViewLoginLink);
        }
    
        private void initListeners(){
            appCompatButtonRegister.setOnClickListener(this);
            appCompatTextViewLoginLink.setOnClickListener(this);
        }
    
        private void initObjects(){
            inputValidation = new InputValidation(activity);
            databaseHelper = new DatabaseHelper(activity);
            user = new User();
        }
    
        @Override
        public void onClick(View v){
            switch (v.getId()){
                case R.id.appCompatButtonRegister:
                    postDataToSQLite();
                    break;
                case R.id.appCompatTextViewLoginLink:
                    finish();
                    break;
            }
        }
    
        private void postDataToSQLite(){
            if (!inputValidation.isInputEditTextFilled(textInputEditTextName, textInputLayoutName, getString(R.string.error_message_name))) {
                return;
            }
            if (!inputValidation.isInputEditTextFilled(textInputEditTextEmail, textInputLayoutEmail, getString(R.string.error_message_email))) {
                return;
            }
            if (!inputValidation.isInputEditTextEmail(textInputEditTextEmail, textInputLayoutEmail, getString(R.string.error_message_email))) {
                return;
            }
            if (!inputValidation.isInputEditTextFilled(textInputEditTextPassword, textInputLayoutPassword, getString(R.string.error_message_password))) {
                return;
            }
            if (!inputValidation.isInputEditTextMatches(textInputEditTextPassword, textInputEditTextConfirmPassword,
                    textInputLayoutConfirmPassword, getString(R.string.error_password_match))) {
                return;
            }
    
            if (!databaseHelper.checkUser(textInputEditTextEmail.getText().toString().trim())) {
    
                user.setName(textInputEditTextName.getText().toString().trim());
                user.setEmail(textInputEditTextEmail.getText().toString().trim());
                user.setPassword(textInputEditTextPassword.getText().toString().trim());
    
                databaseHelper.addUser(user);
    
                // Snack Bar to show success message that record saved successfully
                Snackbar.make(nestedScrollView, getString(R.string.success_message), Snackbar.LENGTH_LONG).show();
                emptyInputEditText();
    
    
            } else {
                // Snack Bar to show error message that record already exists
                Snackbar.make(nestedScrollView, getString(R.string.error_email_exists), Snackbar.LENGTH_LONG).show();
            }
    
    
        }
    
        private void emptyInputEditText(){
            textInputEditTextName.setText(null);
            textInputEditTextEmail.setText(null);
            textInputEditTextPassword.setText(null);
            textInputEditTextConfirmPassword.setText(null);
        }
    
    }
    
    InputValidation.java
    package com.delaroystudios.sqlitelogin.helper;
    
    import android.app.Activity;
    import android.content.Context;
    import android.support.design.widget.TextInputEditText;
    import android.support.design.widget.TextInputLayout;
    import android.util.Patterns;
    import android.view.View;
    import android.view.WindowManager;
    import android.view.inputmethod.InputMethodManager;
    
    
    public class InputValidation {
    
        private Context context;
    
        public InputValidation(Context context){
            this.context = context;
        }
    
        public boolean isInputEditTextFilled(TextInputEditText textInputEditText, TextInputLayout textInputLayout, String message){
            String value = textInputEditText.getText().toString().trim();
            if (value.isEmpty()){
                textInputLayout.setError(message);
                hideKeyboardFrom(textInputEditText);
                return false;
            } else {
                textInputLayout.setErrorEnabled(false);
            }
            return true;
        }
    
        public boolean isInputEditTextEmail(TextInputEditText textInputEditText, TextInputLayout textInputLayout, String message){
            String value = textInputEditText.getText().toString().trim();
            if (value.isEmpty() || !Patterns.EMAIL_ADDRESS.matcher(value).matches()){
                textInputLayout.setError(message);
                hideKeyboardFrom(textInputEditText);
                return false;
    
            }else {
                textInputLayout.setErrorEnabled(false);
            }
            return true;
        }
    
        public boolean isInputEditTextMatches(TextInputEditText textInputEditText1, TextInputEditText textInputEditText2, TextInputLayout textInputLayout, String message ){
            String value1 = textInputEditText1.getText().toString().trim();
            String value2 = textInputEditText2.getText().toString().trim();
            if (!value1.contentEquals(value2)){
                textInputLayout.setError(message);
                hideKeyboardFrom(textInputEditText2);
                return false;
            }else {
                textInputLayout.setErrorEnabled(false);
            }
            return true;
        }
    
        private void hideKeyboardFrom(View view){
            InputMethodManager imm = (InputMethodManager) context.getSystemService(Activity.INPUT_METHOD_SERVICE);
            imm.hideSoftInputFromWindow(view.getWindowToken(), WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
        }
    }
    
    User.java
    package com.delaroystudios.sqlitelogin.model;
    
    
    public class User {
    
        private int id;
        private String name;
        private String email;
        private String password;
    
        public int getId(){
            return id;
        }
    
        public void setId(int id){
            this.id = id;
        }
    
        public String getName(){
            return name;
        }
    
        public void setName(String name){
            this.name = name;
        }
    
        public String getEmail(){
            return email;
        }
    
        public void setEmail(String email){
            this.email = email;
        }
    
        public String getPassword(){
           return password;
        }
    
        public void setPassword(String password){
            this.password = password;
        }
    }
    
    Databasehelper.java
    package com.delaroystudios.sqlitelogin.sql;
    
    import android.content.ContentValues;
    import android.content.Context;
    import android.database.Cursor;
    import android.database.sqlite.SQLiteDatabase;
    import android.database.sqlite.SQLiteOpenHelper;
    
    import com.delaroystudios.sqlitelogin.model.User;
    
    
    public class DatabaseHelper  extends SQLiteOpenHelper{
    
        private static final int DATABASE_VERSION = 1;
    
        private static final String DATABASE_NAME = "UserManager.db";
    
        private static final String TABLE_USER = "user";
    
        private static final String COLUMN_USER_ID = "user_id";
        private static final String COLUMN_USER_NAME = "user_name";
        private static final String COLUMN_USER_EMAIL = "user_email";
        private static final String COLUMN_USER_PASSWORD = "user_password";
    
        private String CREATE_USER_TABLE = "CREATE TABLE " + TABLE_USER + "("
                + COLUMN_USER_ID + " INTEGER PRIMARY KEY AUTOINCREMENT," + COLUMN_USER_NAME + " TEXT,"
                + COLUMN_USER_EMAIL + " TEXT," + COLUMN_USER_PASSWORD + " TEXT" + ")";
    
        private String DROP_USER_TABLE = "DROP TABLE IF EXISTS " + TABLE_USER;
    
        public DatabaseHelper(Context context){
            super(context, DATABASE_NAME, null, DATABASE_VERSION);
        }
    
        @Override
        public void onCreate(SQLiteDatabase db){
            db.execSQL(CREATE_USER_TABLE);
        }
    
        @Override
        public  void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion){
            db.execSQL(DROP_USER_TABLE);
            onCreate(db);
        }
    
        public void addUser(User user){
            SQLiteDatabase db = this.getWritableDatabase();
            ContentValues values = new ContentValues();
            values.put(COLUMN_USER_NAME, user.getName());
            values.put(COLUMN_USER_EMAIL, user.getEmail());
            values.put(COLUMN_USER_PASSWORD, user.getPassword());
    
            db.insert(TABLE_USER, null, values);
            db.close();
        }
    
        public boolean checkUser(String email){
            String[] columns = {
                    COLUMN_USER_ID
            };
            SQLiteDatabase db = this.getWritableDatabase();
            String selection = COLUMN_USER_EMAIL + " = ?";
            String[] selectionArgs = { email };
    
            Cursor cursor = db.query(TABLE_USER,
                    columns,
                    selection,
                    selectionArgs,
                    null,
                    null,
                    null);
            int cursorCount = cursor.getCount();
            cursor.close();
            db.close();
    
            if (cursorCount > 0){
                return true;
            }
            return false;
        }
    
        public boolean checkUser(String email, String password){
            String[] columns = {
                    COLUMN_USER_ID
            };
            SQLiteDatabase db = this.getWritableDatabase();
            String selection = COLUMN_USER_EMAIL + " = ?" + " AND " + COLUMN_USER_PASSWORD + " =?";
            String[] selectionArgs = { email, password };
    
            Cursor cursor = db.query(TABLE_USER,
                    columns,
                    selection,
                    selectionArgs,
                    null,
                    null,
                    null);
            int cursorCount = cursor.getCount();
            cursor.close();
            db.close();
    
            if (cursorCount > 0){
                return true;
            }
            return false;
        }
    }

