logi coda

import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;

public class Login extends AppCompatActivit {
    Button reg;
    Button login;
    TextView em, ps;
    String eid, pass;

    SQLiteDatabase db;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate( savedInstanceState );
        setContentView( R.layout.login );


        db = openOrCreateDatabase( "my.db", MODE_PRIVATE, null );
        db.execSQL( "create table if not exists user(id integer primary key autoincrement,uname text,phone text,dob text,email text,pass text, gender text,city text)" );

        reg = findViewById( R.id.reg );
        login = findViewById( R.id.login );
        em = findViewById( R.id.em );
        ps = findViewById( R.id.ps );


        reg.setOnClickListener( new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                eid = em.getText().toString();
                pass = ps.getText().toString();
                Toast.makeText( Login.this, eid, Toast.LENGTH_SHORT ).show();
                Toast.makeText( Login.this, pass, Toast.LENGTH_SHORT ).show();
                Intent Intent = new Intent( Login.this, Regdata.class );
                startActivity( Intent );
            }
        } );
        login.setOnClickListener( new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                eid = em.getText().toString();
                pass = ps.getText().toString();


                Cursor cursor = db.rawQuery( "select * from user where email='" + eid + "' and pass='" + pass + "'", null );

                if (cursor != null) {


                    if (cursor.moveToNext()) {
                        Toast.makeText( Login.this, "Login done", Toast.LENGTH_SHORT ).show();
                    } else {

                        Toast.makeText( Login.this, "Invalid", Toast.LENGTH_SHORT ).show();

                    }
                }

            }
        } );
    }

    @Override
    protected void onStart() {
        super.onStart();
    }
}