android - 如何在 AlertDialog 上自动暂停我的 CountDownTimer 并在对话框关闭后恢复它

Question

我有一个基本的工作测验应用程序。我正在设置一个警报对话框，为用户提供问题的解释(无论是对还是错)

问题:我无法理解如何放置逻辑:在 AlertDialog 上暂停我的 CountDownTimer 并在单击关闭对话框按钮后自动恢复它。

仅供引用:我找到了关于如何为 CountDownTimer 暂停和恢复的答案，但我找不到关于以编程方式为 AlertDialog 设置它的答案。

这是我的工作代码:

new CountDownTimer(40000, 1000) {
            public void onTick(long millisUntilFinished) {
                timer.setText("Sec: " + millisUntilFinished / 1000);
            }

            public void onFinish() {
                AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(EasyLevel1.this);
                alertDialogBuilder
                        .setTitle("Time's Up!")
                        .setMessage("Your Final Score is " + mScore + " points.")
                        .setCancelable(false)
                        .setPositiveButton("REPLAY",
                                new DialogInterface.OnClickListener() {
                                    @Override
                                    public void onClick(DialogInterface dialog, int i) {
                                        startActivity(new Intent(getApplicationContext(), EasyLevel1.class));
                                        finish();
                                    }
                                })
                        .setNegativeButton("EXIT",
                                new DialogInterface.OnClickListener() {
                                    @Override
                                    public void onClick(DialogInterface dialog, int i) {
                                        finish();
                                    }
                                });
                AlertDialog alertDialog = alertDialogBuilder.create();
                alertDialog.show();
            }
        }.start();

这是我的回答逻辑:

answer1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if(answer1.getText() == mAnswer){
                    mScore+=5;
                    score.setText("Score: " + mScore);
                    updateQuestion(rand.nextInt(mQuestionsLength));
                    AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(EasyLevel1.this, R.style.quizAlert);
                    alertDialogBuilder
                            .setTitle("Bingo! Your answer is Correct.\n" + "Score: +5")
                            .setMessage("Correct Answer: " + mExplanation)
                            .setCancelable(true)
                            .setPositiveButton("Close", null);
                    //startActivity(new Intent(getApplicationContext(),MainActivity.class));
                    //finish();
                    AlertDialog alertDialog = alertDialogBuilder.create();
                    alertDialog.show();
                } else {
                    mScore-=2;
                    score.setText("Score: " + mScore);
                    updateQuestion(rand.nextInt(mQuestionsLength));
                    AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(EasyLevel1.this, R.style.quizAlert);
                    alertDialogBuilder
                            .setTitle("Oops! Your answer is Wrong.\n" + "Score: -2")
                            .setMessage("Correct Answer: " + mExplanation)
                            .setCancelable(true)
                            .setPositiveButton("Close", null);
                    AlertDialog alertDialog = alertDialogBuilder.create();
                    alertDialog.show();
                }
            }
        });

Answer 1

您知道如何暂停/重新启动计时器，但您不知道将警报对话框关闭时将执行的代码放在哪里。

您已经有了使用 setPositiveButton("Close", null) 执行此操作的基础。而不是 null 你会想要使用一个监听器来重启计时器。像这样:

alertDialogBuilder.setPositiveButton("Close", new DialogInterface.OnClickListener() {
    public void onClick(DialogInterface dialog, int id) {
        // Do timer stuff.
    }
});

参见文档 here了解详情。