OIBSIP-Android-Development/MainActivity.java at main · SrujanChary-2003/OIBSIP-Android-Development · GitHub

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package com.example.quiz;

import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;

import android.annotation.SuppressLint;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity implements View.OnClickListener{

    TextView totalQuestionsTextView;
    TextView questionTextView;
    Button ansA, ansB, ansC, ansD;
    Button submitBtn;

    int score=0;
    int totalQuestion = QuestionAnswer.question.length;
    int currentQuestionIndex = 0;
    String selectedanswer = "";

    @SuppressLint("SetTextI18n")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        totalQuestionsTextView= findViewById(R.id.total_question);
        questionTextView= findViewById(R.id.question);
        ansA = findViewById(R.id.ans_A);
        ansB = findViewById(R.id.ans_B);
        ansC = findViewById(R.id.ans_C);
        ansD = findViewById(R.id.ans_D);
        submitBtn= findViewById(R.id.Submit_btn);

        ansA.setOnClickListener(this);
        ansB.setOnClickListener(this);
        ansC.setOnClickListener(this);
        ansD.setOnClickListener(this);
        submitBtn.setOnClickListener(this);

        totalQuestionsTextView.setText("Total questions : "+totalQuestion);
        loadNewQuestion();
    }

    @Override
    public void onClick(View v) {
        ansA.setBackgroundColor(Color.WHITE);
        ansB.setBackgroundColor(Color.WHITE);
        ansC.setBackgroundColor(Color.WHITE);
        ansD.setBackgroundColor(Color.WHITE);

        Button clickedButton = (Button) v;
        if(clickedButton.getId()==R.id.Submit_btn){
        currentQuestionIndex++;
        loadNewQuestion();
        if(selectedanswer.equals(QuestionAnswer.correctAnswers[currentQuestionIndex]))
        {
            score++;
        }
        }else{
            selectedanswer = clickedButton.getText().toString();
            clickedButton.setBackgroundColor(Color.MAGENTA);
        }

    }
    void loadNewQuestion() {

        if(currentQuestionIndex == totalQuestion)
        {
            finishQuiz();
            return;
        }
        questionTextView.setText(QuestionAnswer.question[currentQuestionIndex]);
        ansA.setText(QuestionAnswer.choices[currentQuestionIndex][0]);
        ansB.setText(QuestionAnswer.choices[currentQuestionIndex][1]);
        ansC.setText(QuestionAnswer.choices[currentQuestionIndex][2]);
        ansD.setText(QuestionAnswer.choices[currentQuestionIndex][3]);
    }
    void finishQuiz()
    {
        String passstatus;
        if(score > totalQuestion*0.60)
        {
            passstatus = "Passed";
        }
        else {
            passstatus = "Failed";
        }
        new AlertDialog.Builder(this)
                .setTitle(passstatus)
                .setMessage("Score is "+ score+ "Out of "+totalQuestion)
                .setPositiveButton("Restart",(dialogInterface, i) -> restartQuiz() )
             .setCancelable(false)
            .show();}
             void restartQuiz() {
                 score = 0;
                currentQuestionIndex=0;
                loadNewQuestion();
            }
}