Question

作为ussual，我可以轻松地将更多项添加到ListView中。但是，当我的ListView在Fragment里面时问题就出现了。

public class QuestionFragment extends Fragment {
ExaminationActivity activity;
Question question;

TextView lblQuestion;
ListView listChoice;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    activity = (ExaminationActivity) getActivity();
    question = activity.getCurrentView();
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_question, container, false);
    lblQuestion = (TextView) view.findViewById(R.id.lbl_question);
    lblQuestion.setText(question.getTitle());
    listChoice = (ListView) view.findViewById(R.id.list_option);

    listChoice.setAdapter(new ChosenAdapter(activity, 0, question.getMutipleChoice(), question.getUserChoice()));
    return view;
}

private class ChosenAdapter extends ArrayAdapter<String> {
    Context context;
    ArrayList<String> multipleChoice;
    int selected;

    public ChosenAdapter(Context context, int resource, ArrayList<String> multipleChoice, int selected) {
        super(context, resource, multipleChoice);
        this.context = context;
        this.multipleChoice = multipleChoice;
        this.selected = selected;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        LayoutInflater inflater = ((Activity)context).getLayoutInflater();
        View view = inflater.inflate(R.layout.view_chosen_item, parent);
        RadioButton radio = (RadioButton) view.findViewById(R.id.radio_choice);
        radio.setChecked((selected == position));
        TextView lbl_title = (TextView) view.findViewById(R.id.lbl_title);
        lbl_title.setText(multipleChoice.get(position));
        Log.i("INFO", "chosen " + multipleChoice.get(position));
        return view;
    }
}
}

和错误：

10-24 22：48：23.391 31862-31862 / com.dragonfly.tracnhiem E / AndroidRuntime：FATAL EXCEPTION：main 处理：com.dragonfly.tracnhiem，PID：31862 android.view.InflateException：二进制XML文件行＃15：AdapterView不支持addView（View，LayoutParams）在android.view.LayoutInflater.inflate（LayoutInflater.java:539）在android.view.LayoutInflater.inflate（LayoutInflater.java:423）在android.view.LayoutInflater.inflate（LayoutInflater.java:374）在com.dragonfly.tracnhiem.activity.QuestionFragment $ ChosenAdapter.getView（QuestionFragment.java:65）

Answer 1

与适配器一起使用的ListView不允许从代码或XML布局添加视图（如您的情况）。相反，您需要从代码中将数据项添加到适配器。如果在视图与适配器关联后添加了数据项，请记得调用adapter.notifyDataSetChanged()。请查看本指南以获取更多信息：Building Layouts with an Adapter

在Fragment中的ListView中添加更多项目

1 个答案: