单击后使用自定义视图更新对话框的内容

Question

我正在使用一个对话框来显示 Android 中的一系列测验。一旦用户回答“真”或“假”，我想显示下一个测验。

我正在使用自定义布局，并使用以下代码对其进行控制：

public void showQuizDialog() {
    View v;
    TextView question;
    // Textview showing Quiz 1 out of 3
    TextView numQ;
    NetworkImageView image;
    ImageLoader imageLoader = AppController.getInstance().getImageLoader();

    // The coordinator keeps track of the game
    coordinator.setQuizStarted();
    // Get the quiz using the coordinator
    Quiz qX = coordinator.getQuiz();
    final String answer = qX.getAnswer();
    final String quizTracker = coordinator.getTracker();

    // Create an instance of the dialog fragment
    AlertDialog.Builder quiz = new AlertDialog.Builder(MyActivity.this);

    LayoutInflater inflater = MyActivity.this.getLayoutInflater();

    // Inflate and set the layout for the dialog
    v = inflater.inflate(R.layout.quiz_layout,null);

    // Set the question
    question = (TextView) v.findViewById(R.id.content_quiz);
    question.setText(qX.getQuestion());

    // Set current number of question
    numQ = (TextView) v.findViewById(R.id.number_quiz);
    numQ.setText(quizTracker);

    // Retrieves the image from url
    image = (NetworkImageView) v.findViewById(R.id.thumbnail_quiz);
    if (imageLoader == null)
        imageLoader = AppController.getInstance().getImageLoader();
    String urlImage = getCompleteUrl(CODE_QUIZ_IMG);
    urlImage += qX.getImg();
    image.setImageUrl(urlImage, imageLoader);


    quiz.setPositiveButton("True", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
                // User clicked OK button
                if (answer.equals(quiz_true)) {
                    coordinator.notifyCorrectQuizNum();
                    Log.d(QUIZ_DIALOG,"\t\tCorrect answer! it was true");
                }
                coordinator.setQuizEnded(true);
                coordinator.updateQuizLeft();
            }
        })
      .setNegativeButton("False", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        // User clicked to False btn

                        if (answer.equals(quiz_false)){
                            Log.d(QUIZ_DIALOG,"\t\tCorrect Answer!! It was false");
                            coordinator.notifyCorrectQuizNum();
                        }
                        coordinator.setQuizEnded(true);
                        coordinator.updateQuizLeft();
                    }
                });

    quiz.setView(v);

    final AlertDialog dialog = quiz.create();
    dialog.setCancelable(false);
    dialog.setCanceledOnTouchOutside(false);
    dialog.show();
} 

假设有 100 个测验要显示，并且 Coordinator 类的一个方法返回剩余测验的数量。

所以，通话结束后

coordinator.setQuizEnded(true);
coordinator.updateQuizLeft();

coordinator.getQuizLeft() 将返回 99。coordinator.getQuiz() 将指向下一个测验。

如何在不关闭对话框的情况下更新TextView question 和numQ？

Answer 1

试试这样的：

setupQuizDialog() 首先被调用并创建一个没有任何内容的对话框。

loadNewQuestionIntoDialog() 不断调用以用新问题刷新对话框的内容。

    public void setupQuizDialog() {
    LayoutInflater inflater = MyActivity.this.getLayoutInflater();

    // Inflate and set the layout for the dialog
    View v = inflater.inflate(R.layout.quiz_layout,null);

    AlertDialog.Builder quiz = new AlertDialog.Builder(MyActivity.this)
            .setPositiveButton("True", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    //Nothing, will replace later
                }
            })
            .setNegativeButton("False", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    //Nothing, will replace later
                }
            });
    quiz.setView(v);

    final AlertDialog dialog = quiz.create();
    dialog.setCancelable(false);
    dialog.setCanceledOnTouchOutside(false);
    dialog.show();
    loadNewQuestionIntoDialog(dialog, 100);
}

public void loadNewQuestionIntoDialog(final AlertDialog dialog, final int questionNumber){

    ImageLoader imageLoader = AppController.getInstance().getImageLoader();
    // The coordinator keeps track of the game
    coordinator.setQuizStarted();
    // Get the quiz using the coordinator
    final String answer = qX.getAnswer();
    final String quizTracker = coordinator.getTracker();

    TextView question = (TextView) dialog.findViewById(R.id.content_quiz);
    question.setText(qX.getQuestion());

    TextView numQ = (TextView) dialog.findViewById(R.id.number_quiz);
    numQ.setText(quizTracker);

    // Retrieves the image from url
    NetworkImageView image = (NetworkImageView) dialog.findViewById(R.id.thumbnail_quiz);
    if (imageLoader == null)
        imageLoader = AppController.getInstance().getImageLoader();
    String urlImage = getCompleteUrl(CODE_QUIZ_IMG);
    urlImage += qX.getImg();
    image.setImageUrl(urlImage, imageLoader);

    dialog.getButton(DialogInterface.BUTTON_POSITIVE).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            // User clicked OK button
            if (answer.equals(quiz_true)) {
                coordinator.notifyCorrectQuizNum();
                Log.d(QUIZ_DIALOG,"\t\tCorrect answer! it was true");
            }
            coordinator.setQuizEnded(true);
            if(questionNumber > 0)
                loadNewQuestionIntoDialog(dialog, coordinator.updateQuizLeft());
        }
    });
    dialog.getButton(DialogInterface.BUTTON_NEGATIVE).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            // User clicked to False btn

            if (answer.equals(quiz_false)){
                Log.d(QUIZ_DIALOG,"\t\tCorrect Answer!! It was false");
                coordinator.notifyCorrectQuizNum();
            }
            coordinator.setQuizEnded(true);
            if(questionNumber > 0)
                loadNewQuestionIntoDialog(dialog, coordinator.updateQuizLeft());
        }
    });

}