Tagged: Free Source Code of Awesome Online Quiz App using Firebase

Free Source Code of Awesome Online Quiz App using Firebase is written below, MainActivity.java: package com.example.quiz; import androidx.appcompat.app.AppCompatActivity; import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button; public class MainActivity extends AppCompatActivity {   Button btn;    @Override    protected void...