MainActivity_k.java

package com.example.quizapp;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity_k extends AppCompatActivity {
    private TextView appName;
    private Button start;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        appName = findViewById(R.id.AppName);
        start = findViewById(R.id.start_button);

        start.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity_k.this, Category_activity_k.class);
                startActivity(intent);
            }
        });

    }
}