app/src/main/java/com/example/map_quiz/QuizActivity.java - master - Kulechek/Lab_10

app/src/main/java/com/example/map_quiz/QuizActivity.java
86 строк3 KB
Temnikov Konstantin
lab11_2
25 май 2025, 14:15
25 май 2025, 14:158403174
package com.example.map_quiz;

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

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

import java.util.List;

public class QuizActivity extends AppCompatActivity {
    private TextView questionText;
    private Button[] buttons;
    private int correctAnswerIndex;
    private DbHelper dbHelper;
    private Question currentQuestion;

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

        dbHelper = new DbHelper(this);

        questionText = findViewById(R.id.questionText);
        buttons = new Button[] {
                findViewById(R.id.btnA),
                findViewById(R.id.btnB),
                findViewById(R.id.btnC),
                findViewById(R.id.btnD)
        };

        int id = getIntent().getIntExtra("QUESTION_ID", 1);
        loadQuestion(id);
    }

    private void loadQuestion(int id) {
        currentQuestion = dbHelper.getQuestionWithAnswers(id);
        if (currentQuestion == null) {
            questionText.setText("Вопрос не найден");
            return;
        }

        questionText.setText(currentQuestion.text);
        List<Answer> answers = currentQuestion.answers;
        for (int i = 0; i < buttons.length; i++) {
            if (i < answers.size()) {
                buttons[i].setText(answers.get(i).text);
                buttons[i].setEnabled(true);
                buttons[i].setVisibility(View.VISIBLE);
            } else {
                buttons[i].setVisibility(View.GONE);
            }
        }
        correctAnswerIndex = currentQuestion.getCorrectAnswerIndex();
    }

    public void onAnswerClick(View v) {
        int clicked = -1;
        for (int i = 0; i < buttons.length; i++) {
            if (v.getId() == buttons[i].getId()) clicked = i;
            // подсвечиваем правильный и неправильные
            buttons[i].setEnabled(false);
            if (i == correctAnswerIndex) {
                buttons[i].setBackgroundColor(Color.GREEN);
            } else {
                buttons[i].setBackgroundColor(Color.RED);
            }
        }

        new AlertDialog.Builder(this)
                .setTitle("Результат")
                .setMessage(clicked == correctAnswerIndex ? "Правильно!" : "Неверно!")
                .setPositiveButton("ОК", (d, w) -> finish())
                .show();
    }

    @Override
    protected void onDestroy() {
        dbHelper.close();
        super.onDestroy();
    }
}