Android inflate view multiple time depending on bu

问题:

StackOverflow community, I need your help (again) ! I created a custom class to quickly create View object (basically it's just a question displayed). Exemple :

Title : Home

Message : Are you living with a cat ?

[BtnYes] ------------------------ [BtnNo]

So here is my custom class "QuestionHelper" to create question programmatically :

public List<LinearLayout> addQuestion(ViewGroup rootView, String title, String message, int id) {
        List<LinearLayout> mButtons = new ArrayList<>();

        // Inflate une question
        LayoutInflater questionInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        RelativeLayout myQuestion = (RelativeLayout) questionInflater.inflate(R.layout.activity_formulaire_question, rootView, false);

        // Assigne la vue au controlleur
        tvTitle = (TextView) myQuestion.findViewById(R.id.activity_formulaire_question_title);
        tvMessage = (TextView) myQuestion.findViewById(R.id.activity_formulaire_question_message);

        // Remplissage des champs textes
        tvTitle.setText(title);
        tvMessage.setText(message);

        // Boutton sous la forme de LinearLayout
        btnNo = (LinearLayout) myQuestion.findViewById(R.id.activity_formulaire_question_ll_btn_no);
        btnYes = (LinearLayout) myQuestion.findViewById(R.id.activity_formulaire_question_ll_btn_yes);

        // Ajout dans la liste
        mButtons.add(btnNo);
        mButtons.add(btnYes);

        return mButtons;
    }

And this is, I think, the bad way of programming (because I don't respect MVC pattern, the button state is managed by the view fragment and there are lots of lines).

final LinearLayout rootQuestion = (LinearLayout) rootView.findViewById(R.id.activity_formulaire_questions_preliminaires_ll_wrapper);
        final QuestionHelper questionHelper = new QuestionHelper(super.getActivity());

        List<LinearLayout> question1 = questionHelper.addQuestion(rootQuestion,
                getResources().getString(R.string.question_preliminaire_1_title),
                getResources().getString(R.string.question_preliminaire_1_message), 1);

        question1.get(0).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                List<LinearLayout> question2 = questionHelper.addQuestion(rootQuestion,
                        getResources().getString(R.string.question_preliminaire_2_title),
                        getResources().getString(R.string.question_preliminaire_2_message), 2);
            }
        });
        question1.get(1).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                List<LinearLayout> question3 = questionHelper.addQuestion(rootQuestion,
                        getResources().getString(R.string.question_preliminaire_3_title),
                        getResources().getString(R.string.question_preliminaire_3_message), 3);

                question3.get(0).setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        List<LinearLayout> question4 = questionHelper.addQuestion(rootQuestion,
                                getResources().getString(R.string.question_preliminaire_4_title),
                                getResources().getString(R.string.question_preliminaire_4_message), 4);

                        question4.get(0).setOnClickListener(new View.OnClickListener() {
                            @Override
                            public void onClick(View v) {
                                List<LinearLayout> question6 = questionHelper.addQuestion(rootQuestion,
                                        getResources().getString(R.string.question_preliminaire_6_title),
                                        getResources().getString(R.string.question_preliminaire_6_message), 6);
                            }
                        });
                    }
                });
                question3.get(1).setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        List<LinearLayout> question5 = questionHelper.addQuestion(rootQuestion,
                                getResources().getString(R.string.question_preliminaire_5_title),
                                getResources().getString(R.string.question_preliminaire_5_message), 5);

                        question5.get(1).setOnClickListener(new View.OnClickListener() {
                            @Override
                            public void onClick(View v) {
                                List<LinearLayout> question6 = questionHelper.addQuestion(rootQuestion,
                                        getResources().getString(R.string.question_preliminaire_6_title),
                                        getResources().getString(R.string.question_preliminaire_6_message), 6);
                            }
                        });
                    }
                });
            }
        });

I can have up to 8 questions depending on the previous question.

UPDATE : To explain clearly what I mean, here is an image. Do you think we could optimise this process ?

UPDATE 2 : I looked for a QuestionHolder class who take the view, the differents variables, and hold it with a get/set tag. Am I in the right way ?

UPDATE 3 : QuestionHolder refer to the same view with getTag...

UPDATE 4 : The view displayed is like that : case 1 : when I press YES YES YES but when I scroll up and press No at the question 1 it looks like that. the questions 3&4|5&6 are removed and let appears question 2. [for the exemple, I manually kill the application and reloaded it... :(]

UPDATE 5 : I created a ListView with an adapter, but it's harder than I think... So I will probably give up and do it the "dirty way"

回答1:

Create class what represent question item:

public class Node{
    private long id;
    private String question;
    private String title;
    private long yesId;
    private long noId;

    //Constructor, getter here....
}

You need adapter with list of question.

ArrayList<Node> questions = new ArrayList<>();
NodeAdapter adapter = new NodeAdapter(questions, ...);

When you pressing button get next node id by answer (getYesId/getNoId). And if it last item create new by id or if not check is next id same as new next id.

//Create interface in your adapter or do what you want, but like this

public void onNodeClicked(long nextId, int currentPosition){
    Node next;
    if(currentPosition == questions.size() - 1){
        next = getNodeById(nextId);
        question.add(next);
    }else{
        next = questions.get(position + 1);
        if(nextId != next.getId()){
            ArrayList<Node> remove = new ArrayList<>();
            remove.addAll(position + 1, questions);
            questions.removeAll(remove);
            next = getNodeById(nextId);
            question.add(next);
        }
    }
    adapter.notifyDataSetChanged();
}

I hope it can help you)