Free Source Code of Awesome Online Quiz App using Firebase

by chillMar · 28/12/2020

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 onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btn=findViewById(R.id.start);

        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this,Quotions.class);
                startActivity(intent);
            }
        });

    }
}

mainactivity.xml:

<?xml version=”1.0″ encoding=”utf-8″?>

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android=”http://schemas.android.com/apk/res/android”

    xmlns:app=”http://schemas.android.com/apk/res-auto”

    xmlns:tools=”http://schemas.android.com/tools”

    android:layout_width=”match_parent”

    android:layout_height=”match_parent”

    android:background=”@drawable/back8″

    tools:context=”.MainActivity”>

    <TextView

        android:id=”@+id/textView5″

        android:layout_width=”wrap_content”

        android:layout_height=”wrap_content”

        android:text=”Online Quiz”

        android:textAlignment=”center”

        android:textColor=”#FFFFFF”

        android:textSize=”36sp”

        android:textStyle=”bold”

        app:layout_constraintBottom_toBottomOf=”parent”

        app:layout_constraintEnd_toEndOf=”parent”

        app:layout_constraintStart_toStartOf=”parent”

        app:layout_constraintTop_toTopOf=”parent”

        app:layout_constraintVertical_bias=”0.054″ />

    <TextView

        android:id=”@+id/textView7″

        android:layout_width=”350dp”

        android:layout_height=”wrap_content”

        android:text=”~Total Marks is 10″

        android:textAlignment=”viewStart”

        android:textColor=”#FFFFFF”

        android:textSize=”26sp”

        app:layout_constraintBottom_toTopOf=”@+id/textView11″

        app:layout_constraintEnd_toEndOf=”parent”

        app:layout_constraintHorizontal_bias=”0.737″

        app:layout_constraintStart_toStartOf=”parent”

        app:layout_constraintTop_toBottomOf=”@+id/textView10″ />

    <TextView

        android:id=”@+id/textView10″

        android:layout_width=”350dp”

        android:layout_height=”wrap_content”

        android:layout_marginTop=”80dp”

        android:text=”~Total Questions is 5″

        android:textAlignment=”viewStart”

        android:textColor=”#FFFFFF”

        android:textSize=”26sp”

        app:layout_constraintBottom_toTopOf=”@+id/textView7″

        app:layout_constraintEnd_toEndOf=”parent”

        app:layout_constraintHorizontal_bias=”0.737″

        app:layout_constraintStart_toStartOf=”parent”

        app:layout_constraintTop_toBottomOf=”@+id/textView5″ />

    <TextView

        android:id=”@+id/textView11″

        android:layout_width=”350dp”

        android:layout_height=”wrap_content”

        android:text=”~Each Question Marks is 2″

        android:textAlignment=”viewStart”

        android:textColor=”#FFFFFF”

        android:textSize=”26sp”

        app:layout_constraintBottom_toTopOf=”@+id/start”

        app:layout_constraintEnd_toEndOf=”parent”

        app:layout_constraintHorizontal_bias=”0.737″

        app:layout_constraintStart_toStartOf=”parent”

        app:layout_constraintTop_toBottomOf=”@+id/textView7″

        app:layout_constraintVertical_bias=”0.07″ />

    <Button

        android:id=”@+id/start”

        android:layout_width=”wrap_content”

        android:layout_height=”wrap_content”

        android:layout_marginBottom=”200dp”

      android:padding=”10dp”

        android:background=”#E91E63″

        android:text=”START QUIZ”

        android:textColor=”#FFFFFF”

        android:textSize=”24sp”

        app:layout_constraintBottom_toBottomOf=”parent”

        app:layout_constraintEnd_toEndOf=”parent”

        app:layout_constraintHorizontal_bias=”0.497″

        app:layout_constraintStart_toStartOf=”parent”

        app:layout_constraintTop_toBottomOf=”@+id/textView11″

        app:layout_constraintVertical_bias=”0.294″ />

    <TextView

        android:id=”@+id/textView”

        android:layout_width=”wrap_content”

        android:layout_height=”wrap_content”

        android:text=”Instructions:”

        android:textAlignment=”viewStart”

        android:textColor=”#FFFFFF”

        android:textSize=”30sp”

        android:textStyle=”bold”

        app:layout_constraintBottom_toTopOf=”@+id/textView10″

        app:layout_constraintEnd_toEndOf=”parent”

        app:layout_constraintHorizontal_bias=”0.025″

        app:layout_constraintStart_toStartOf=”parent”

        app:layout_constraintTop_toBottomOf=”@+id/textView5″

        app:layout_constraintVertical_bias=”0.594″ />

</androidx.constraintlayout.widget.ConstraintLayout>

Quetion.java:

package com.example.quiz;



import androidx.annotation.Nullable;

import androidx.appcompat.app.AppCompatActivity;

import androidx.recyclerview.widget.RecyclerView;



import android.app.ProgressDialog;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.RadioButton;

import android.widget.RadioGroup;

import android.widget.TextView;



import com.firebase.ui.firestore.FirestoreRecyclerAdapter;

import com.google.firebase.firestore.DocumentReference;

import com.google.firebase.firestore.DocumentSnapshot;

import com.google.firebase.firestore.EventListener;

import com.google.firebase.firestore.FirebaseFirestore;

import com.google.firebase.firestore.FirebaseFirestoreException;



public class Quetions extends AppCompatActivity {

    private RecyclerView rcv;

    private FirebaseFirestore db;

    private FirestoreRecyclerAdapter fra;

    TextView ques;

    Button next;

    RadioGroup radioGroup;

    RadioButton op1,op2,op3,op4;

    int serial=1;

    int marks=0;

    String ans;

    ProgressDialog pd;





    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_quotions);



        ques=findViewById(R.id.question);

        next=findViewById(R.id.next);

        radioGroup=findViewById(R.id.group);

        radioGroup.clearCheck();

        op1=findViewById(R.id.option1);

        op2=findViewById(R.id.option2);

        op3=findViewById(R.id.option3);

        op4=findViewById(R.id.option4);

        pd=new ProgressDialog(this);

        pd.setMessage("Loading...");

        pd.show();

        db=FirebaseFirestore.getInstance();



        DocumentReference documentReference=db.collection("Quiz").document(String.valueOf(serial));

        documentReference.addSnapshotListener(new EventListener<DocumentSnapshot>() {

            @Override

            public void onEvent(@Nullable DocumentSnapshot value, @Nullable FirebaseFirestoreException error) {





                ques.setText("Q"+serial+": "+ value.getString("q"));

                op1.setText(value.getString("op1"));

                op2.setText(value.getString("op2"));

                op3.setText(value.getString("op3"));

                op4.setText(value.getString("op4"));

                ans=value.getString("ans");

                pd.dismiss();

            }

        });













        next.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                pd.show();



                radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {

                    @Override

                    public void onCheckedChanged(RadioGroup group, int checkedId) {

                        RadioButton radioButton=(RadioButton)group.findViewById(checkedId);



                    }

                });



                int selectedId = radioGroup.getCheckedRadioButtonId();

                RadioButton radioButton = (RadioButton)radioGroup.findViewById(selectedId);

                String option = (String) radioButton.getText();

                if(ans.equals(option)) {

                    marks=marks+2;



                }else {



                }

                radioGroup.clearCheck();

                serial++;

                db= FirebaseFirestore.getInstance();

                DocumentReference documentReference=db.collection("Quiz").document(String.valueOf(serial));

                documentReference.addSnapshotListener(new EventListener<DocumentSnapshot>() {

                    @Override

                    public void onEvent(@Nullable DocumentSnapshot value, @Nullable FirebaseFirestoreException error) {





                        ques.setText("Q"+serial+": "+ value.getString("q"));

                        op1.setText(value.getString("op1"));

                        op2.setText(value.getString("op2"));

                        op3.setText(value.getString("op3"));

                        op4.setText(value.getString("op4"));

                        ans=value.getString("ans");

                        pd.dismiss();

                    }

                });







                if (serial==5){

                    next.setText("SUBMIT");

                }

                if (serial==6){



                    Intent intent=new Intent(Quetions.this,Result.class);

                    String mark = ""+marks;

                    intent.putExtra("marks",mark);

                    startActivity(intent);

                }



            }

        });



    }

}

quetion.xml:

<?xml version=”1.0″ encoding=”utf-8″?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android=”http://schemas.android.com/apk/res/android”
    xmlns:app=”http://schemas.android.com/apk/res-auto”
    xmlns:tools=”http://schemas.android.com/tools”
    android:layout_width=”match_parent”
    android:layout_height=”match_parent”
    android:background=”@drawable/back8″
    tools:context=”.Quotions”>
    <androidx.cardview.widget.CardView
        android:id=”@+id/ques”
        android:layout_width=”409dp”
        android:layout_height=”wrap_content”
        android:background=”@drawable/back8″
        app:contentPadding=”10dp”
        app:layout_constraintBottom_toBottomOf=”parent”
        app:layout_constraintEnd_toEndOf=”parent”
        app:layout_constraintStart_toStartOf=”parent”
        app:layout_constraintTop_toTopOf=”parent”
        app:layout_constraintVertical_bias=”0.19999999″>

        <LinearLayout
            android:layout_width=”match_parent”
            android:layout_height=”wrap_content”
            android:background=”@drawable/back8″
            android:orientation=”vertical”>

            <TextView
                android:id=”@+id/question”
                android:layout_width=”match_parent”
                android:layout_height=”wrap_content”
                android:layout_marginLeft=”20dp”
                android:textColor=”#FFFFFF”
                android:textSize=”22sp” />

            <RadioGroup
                android:id=”@+id/group”
                android:layout_width=”wrap_content”
                android:layout_height=”wrap_content”
                android:layout_marginTop=”20dp”>

                <RadioButton
                    android:id=”@+id/option1″
                    android:layout_width=”wrap_content”
                    android:layout_height=”wrap_content”
                    android:layout_marginLeft=”50dp”
                    android:layout_marginTop=”5dp”
                    android:buttonTint=”#FFFFFF”
                    android:textColor=”#FFFFFF”
                    android:textSize=”18sp” />

                <RadioButton
                    android:id=”@+id/option2″
                    android:layout_width=”wrap_content”
                    android:layout_height=”wrap_content”
                    android:layout_marginLeft=”50dp”
                    android:layout_marginTop=”5dp”
                    android:buttonTint=”#FFFFFF”
                    android:textColor=”#FFFFFF”
                    android:textSize=”18sp” />

                <RadioButton
                    android:id=”@+id/option3″
                    android:layout_width=”wrap_content”
                    android:layout_height=”wrap_content”
                    android:layout_marginLeft=”50dp”
                    android:layout_marginTop=”5dp”
                    android:buttonTint=”#FFFFFF”
                    android:textColor=”#FFFFFF”
                    android:textSize=”18sp” />

                <RadioButton
                    android:id=”@+id/option4″
                    android:layout_width=”wrap_content”
                    android:layout_height=”wrap_content”
                    android:layout_marginLeft=”50dp”
                    android:layout_marginTop=”5dp”
                    android:buttonTint=”#FFFFFF”
                    android:textColor=”#FFFFFF”
                    android:textSize=”18sp” />
            </RadioGroup>

        </LinearLayout>

    </androidx.cardview.widget.CardView>

    <Button
        android:id=”@+id/next”
        android:layout_width=”wrap_content”
        android:layout_height=”wrap_content”
        android:padding=”5dp”
        android:background=”#E91E63″
        android:layout_marginBottom=”200dp”
        android:text=”NEXT”
        android:textColor=”#FFFFFF”
        android:textSize=”24sp”
        app:layout_constraintBottom_toBottomOf=”parent”
        app:layout_constraintEnd_toEndOf=”parent”
        app:layout_constraintStart_toStartOf=”parent”
        app:layout_constraintTop_toBottomOf=”@+id/ques” />

</androidx.constraintlayout.widget.ConstraintLayout>

Result.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;

import android.widget.TextView;



public class Result extends AppCompatActivity {



    Button btn;

    TextView res;



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_result);



        btn=findViewById(R.id.home);

        res=findViewById(R.id.res);

        Bundle b= getIntent().getExtras();

        String marks=b.getString("marks");

        res.setText("Obtained Marks is "+marks);



        btn.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                Intent intent = new Intent(Result.this,MainActivity.class);

                startActivity(intent);

            }

        });



    }

}

result.xml:

Gradle:

implementation ‘com.google.firebase:firebase-firestore:21.5.0’
implementation ‘com.google.firebase:firebase-core:17.4.4’
implementation ‘com.firebaseui:firebase-ui-firestore:4.1.0’
implementation ‘androidx.recyclerview:recyclerview:1.1.0’
implementation “androidx.cardview:cardview:1.0.0”

Manifests file:

<uses-permission android:name=”android.permission.INTERNET” />

Firestore Insert Question Manually for Online Quiz App:

Output of Free Source Code of Awesome Online Quiz App using Firebase

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Free Source Code of Awesome Online Quiz App using Firebase

MainActivity.java:

mainactivity.xml:

Quetion.java:

quetion.xml:

Result.java:

result.xml:

Gradle:

Manifests file:

Firestore Insert Question Manually for Online Quiz App:

Output of Free Source Code of Awesome Online Quiz App using Firebase

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