Question

所以我在下面的代码中遇到两个问题，我正在寻找指导，当旋转设备时，应用程序适用于一个问题然后结束并将用户带到结果页面，我可以＆＃39;为了我的生命，看看为什么如果答案是正确的话会结束？

其次我在旋转设备时无法保存倒数计时器，它重置为59秒（我删除了使用的代码，因为它显然没有工作）但是我使用的是putInt（＆＃34;时间＆＃34;，时间）;

有什么想法？ TIA

import java.util.List;
import java.util.concurrent.TimeUnit;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class QuestionActivity extends Activity {

List<Question> quesList;
int score = 0;
int qid = 0;

Question currentQ;
TextView txtQuestion, times, scored;
Button button1, button2, button3;


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


    QuizHelper db = new QuizHelper(this);  // question class
    quesList = db.getAllQuestions();  // returns all questions
    currentQ = quesList.get(qid); // current question by id

    txtQuestion = (TextView) findViewById(R.id.txtQuestion); //displays the current question

    button1 = (Button) findViewById(R.id.button1); //button 1 displays option 1 for answer
    button2 = (Button) findViewById(R.id.button2); //button 2 displays option 2 for answer
    button3 = (Button) findViewById(R.id.button3); //button 3 displays option 3 for answer

    scored = (TextView) findViewById(R.id.score); //Displays the score

    times = (TextView) findViewById(R.id.timers); //displays the timer

    setQuestionView();

    CounterClass timer = new CounterClass(60000, 1000); //countdown timer set to 1 minute
    CountDownTimer start = timer.start();//starts the timer

    //listeners
    button1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            getAnswer(button1.getText().toString()); //checks if answer is correct
        }
    });

    button2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            getAnswer(button2.getText().toString());
        }
    });

    button3.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            getAnswer(button3.getText().toString());
        }
    });
}

public void getAnswer(String AnswerString) {
    if (currentQ.getANSWER().equals(AnswerString)) {
        score++; //increments the score by 1 if correct
        scored.setText("Score : " + score); //updates the score display
    }

    else {
        Intent intent = new Intent(QuestionActivity.this, ResultActivity.class); //if incorrect ends the game

        Bundle b = new Bundle(); //passes the score
        b.putInt("score", score); // The end score
        intent.putExtras(b); // displays the score on the closing screen
        startActivity(intent);
    }

    if (qid != 21) { //if question id not equal to 21 get next question and update current question
        currentQ = quesList.get(qid);
        setQuestionView();
    }
}

public class CounterClass extends CountDownTimer {

    public CounterClass(long millisInFuture, long countDownInterval) {
        super(millisInFuture, countDownInterval);
    }

   @Override
    public void onFinish() {
        times.setText("Time is up");
        onFinish();
    }

    @Override
    public void onTick(long millisUntilFinished) {
        long millis = millisUntilFinished;
        String timerlayout = String.format("%02d:%02d", TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished) % 60, TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) % 60); //sets the layout of the timer
        System.out.println(timerlayout);
        times.setText(timerlayout);
    }
}

private void setQuestionView() { //creates the overall question and options for answer
    txtQuestion.setText(currentQ.getQUESTION());
    button1.setText(currentQ.getOPTA());
    button2.setText(currentQ.getOPTB());
    button3.setText(currentQ.getOPTC());
    qid++; //increments the question id by 1
}

@Override
protected void onSaveInstanceState(Bundle outSate) {
    outSate.putString("myQu", txtQuestion.getText().toString());
    outSate.putString("1", button1.getText().toString());
    outSate.putString("2", button2.getText().toString());
    outSate.putString("3", button3.getText().toString());

    outSate.putString("score", scored.getText().toString());


    super.onSaveInstanceState(outSate);
}

@Override
protected void onRestoreInstanceState(Bundle savedInstanceSate) {
    super.onRestoreInstanceState(savedInstanceSate);

    txtQuestion.setText( savedInstanceSate.getString("myQu"));
    button1.setText( savedInstanceSate.getString("1"));
    button2.setText( savedInstanceSate.getString("2"));
    button3.setText( savedInstanceSate.getString("3"));

    scored.setText( savedInstanceSate.getString("score"));
}

}

Answer 1

排序，问题是由于计时器。问题上存在的问题仍然存在，但我对此有所了解，并会在需要时再次询问。

应用程序结束旋转和计时器未保存

1 个答案: