Question

我正在开发一个测验应用程序，我希望在测验时间结束时显示alert dialog。所以立即时间到了，alert dialog弹出可能是一段文字说明你的时间已到。

我确实尝试过对此进行研究，但没有任何积极的结果，所以我希望在这里得到一些积极的反馈。

下面是我为倒数计时器编写的代码。

 final CountDownTimer timer = new CountDownTimer(1800000, 1000) {
        public void onTick(long millisUntilFinished) {
            mTextField.setText("Time Spent " + String.format("%d min : %d sec",
                    TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished),
                    TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) -
            TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished))));
}

public void onFinish() {
    mTextField.setText("Time is up");
    timerProcessing = false;
    //Intent intent = new Intent(TestActivity.this, Assesment.class);
    //startActivity(intent);
}
}.start();

以下是我为对话编写的代码

private View.OnClickListener finishListener = new View.OnClickListener() {
    public void onClick(View v) {
        setAnswer();
        //Calculate Score
        int score = 0;
        for(int i=0; i<correctAns.length; i++){
            if ((correctAns[i] != -1) && (correctAns[i] == selected[i]))
                score++;
        }
        AlertDialog alertDialog;
        alertDialog = new AlertDialog.Builder(TestActivity.this).create();
        alertDialog.setTitle("Score");
        alertDialog.setMessage((score) +" out of " + (QuizFunActivity.getQuesList().length()));

        alertDialog.setButton(AlertDialog.BUTTON_NEUTRAL, "Retake", new DialogInterface.OnClickListener(){

            public void onClick(DialogInterface dialog, int which) {
                review = false;
                quesIndex=0;
                TestActivity.this.showQuestion(0, review);
            }
        });

        alertDialog.setButton(AlertDialog.BUTTON_POSITIVE, "Review", new DialogInterface.OnClickListener(){

            public void onClick(DialogInterface dialog, int which) {
                review = true;
                quesIndex=0;
                TestActivity.this.showQuestion(0, review);
            }
        });

        alertDialog.setButton(AlertDialog.BUTTON_NEGATIVE,"Quit", new DialogInterface.OnClickListener(){

            public void onClick(DialogInterface dialog, int which) {
                review = false;
                finish();
            }
        });

        alertDialog.show();

    }
};

所以问题是当倒计时器启动时我如何自动呼叫或显示dialog。

谢谢：）

Answer 1

您可以在倒数计时器的onFinish（）方法中显示警告对话框。当时间到了，这个方法在Last Tick上调用..

    public void onFinish() {
    mTextField.setText("Time is up");
    timerProcessing = false;
    //Intent intent = new Intent(TestActivity.this, Assesment.class);
    //startActivity(intent);


  AlertDialog alertDialog;
        alertDialog = new AlertDialog.Builder(TestActivity.this).create();
        alertDialog.setTitle("Score");
        alertDialog.setMessage((score) +" out of " + (QuizFunActivity.getQuesList().length()));

        alertDialog.setButton(AlertDialog.BUTTON_NEUTRAL, "Retake", new DialogInterface.OnClickListener(){

            public void onClick(DialogInterface dialog, int which) {
                review = false;
                quesIndex=0;
                TestActivity.this.showQuestion(0, review);
            }
        });

        alertDialog.setButton(AlertDialog.BUTTON_POSITIVE, "Review", new DialogInterface.OnClickListener(){

            public void onClick(DialogInterface dialog, int which) {
                review = true;
                quesIndex=0;
                TestActivity.this.showQuestion(0, review);
            }
        });

        alertDialog.setButton(AlertDialog.BUTTON_NEGATIVE,"Quit", new DialogInterface.OnClickListener(){

            public void onClick(DialogInterface dialog, int which) {
                review = false;
                finish();
            }
        });

        alertDialog.show();

    }


}

Answer 2

谢谢你们，但我能够回答修复它。显然我只需要将对话代码添加到Countdown计时器onFinish（）方法

final CountDownTimer timer = new CountDownTimer(180000, 1000) {
        public void onTick(long millisUntilFinished) {
            mTextField.setText("Time Spent: " + String.format("%d min : %d sec",
                    TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished),
                    TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) -
            TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished))));
}

public void onFinish() {
    mTextField.setText("Time is up");
    timerProcessing = false;
    setAnswer();
    //Calculate Score
    int score = 0;
    for(int i=0; i<correctAns.length; i++){
        if ((correctAns[i] != -1) && (correctAns[i] == selected[i]))
            score++;
    }
    AlertDialog alertDialog;
    alertDialog = new AlertDialog.Builder(TestActivity.this).create();
    alertDialog.setTitle("Score");
    alertDialog.setMessage((score) +" out of " + (QuizFunActivity.getQuesList().length()));

    alertDialog.setButton(AlertDialog.BUTTON_NEUTRAL, "Retake", new DialogInterface.OnClickListener(){

        public void onClick(DialogInterface dialog, int which) {
            review = false;
            quesIndex=0;
            TestActivity.this.showQuestion(0, review);
        }
    });

    alertDialog.setButton(AlertDialog.BUTTON_POSITIVE, "Review", new DialogInterface.OnClickListener(){

        public void onClick(DialogInterface dialog, int which) {
            review = true;
            quesIndex=0;
            TestActivity.this.showQuestion(0, review);
        }
    });

    alertDialog.setButton(AlertDialog.BUTTON_NEGATIVE,"Quit", new DialogInterface.OnClickListener(){

        public void onClick(DialogInterface dialog, int which) {
            review = false;
            finish();
        }
    });

    alertDialog.show();
}
}.start();

倒数计时器完成时如何显示alertdialog android

2 个答案: