Question

我基于方法中发送的JSON对象构建UI。每次运行该方法时，都会向UI添加一个新行。我需要我的chartsButtonListener才能访问JSONObject question。

public void buildQuestions(JSONObject question) throws JSONException {
    LayoutInflater inflater = (LayoutInflater) getActivity().
    getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    questionContainer = (TableLayout) mainLayout.findViewById(R.id.questionContainer);

    View questionBox = inflater.inflate(R.layout.question, null);
    questionBox.setId(Integer.parseInt(question.getString("id")));
    TextView title = (TextView) questionBox.findViewById(R.id.questionTextView);
    title.setText(question.getString("title"));

    //omitted code for verbosity

    Button chartsButton = (Button) questionBox.findViewById(R.id.chartsButton);

    Button submitButton = (Button) questionBox.findViewById(R.id.submitButton);
    chartsButton.setOnClickListener(chartsListener);
    submitButton.setOnClickListener(submitListener);

    TableRow tr = (TableRow) questionBox;
    TableLayout.LayoutParams trParams = new TableLayout.LayoutParams(
    TableLayout.LayoutParams.MATCH_PARENT,
    TableLayout.LayoutParams.MATCH_PARENT);
    trParams.setMargins(leftMargin, topMargin, rightMargin, bottomMargin);
    tr.setLayoutParams(trParams);   
    LinearLayout progressRow = (LinearLayout) mainLayout.findViewById(R.id.progressRow);
    progressRow.setVisibility(View.GONE);
    questionContainer.addView(tr);
}

public OnClickListener chartsListener = new OnClickListener() {
    public void onClick(View v) {
        Intent chart = new Intent();
        chart.setClass(getActivity(), Chart.class);
        Log.v("", v.getParent().getClass().toString());//returns the TableRow
        startActivity(chart);
    }   
};

我熟悉put extra，但最好是我可以直接将问题对象传递给侦听器，这样我就可以将它转发给Intent。有什么建议吗？

Answer 1

您可以使用View.setTag（Object）将任意对象与View关联。

chartsButton.setTag（问题）;

在你的onClick中，你可以这样做：问题q =（问题）v.getTag（）;

通过按钮单击构建活动

1 个答案: