Question

在我的应用程序中，我在列表视图中显示一些项目，每行有一个名称和一个刻度图像。勾选图像仅在选择（选中）项目时显示，选择工作正常，但问题是当选择新项目时，之前选择的项目的勾选不会变为不可见。如何解决这个问题？任何帮助将不胜感激这是我的代码

适配器

if("file/directory not found".equals(exception.value)) ...

FragmentPart（项目点击监听器）

public class ListAdapter extends BaseAdapter {
    private LayoutInflater inflater;

    Context context;
    private ArrayList<String> responseList;

    private LinearLayout parent_choice_list_container;
    private TextView item_name;
    private ImageView iv_choice_list_item_selected;
        public ListAdapter (Context context, ArrayList<String> responseList) {
        this.context = context;
        this.responseList = responseList;
        inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    public void setSelectedIndex(int ind) {
        selectedIndex = ind;
        notifyDataSetChanged();
    }

    @Override
    public int getCount() {
        return responseList.size();
    }

    @Override
    public Object getItem(int position) {
        return position;
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View view = convertView;
        if (view == null) {
            view = inflater.inflate(R.layout.menu_list_item, null);
        }
        parent_choice_list_container = (LinearLayout) view.findViewById(R.id.parent_choice_list_container);
        item_name = (TextView) view.findViewById(R.id.item_name);
        iv_choice_list_item_selected = (ImageView) view.findViewById(R.id.iv_choice_list_item_selected);
        iv_logo = (ImageView) view.findViewById(R.id.iv_blog_category_logo);
      if (responseList.get(position).isSelected()) {
            iv_choice_list_item_selected.setVisibility(View.VISIBLE);
        } else {
            iv_choice_list_item_selected.setVisibility(View.GONE);
        }            list_item_name.setText(responseList.get(position).getName());
        return view;
    }
}

Answer 1

听起来你正在使用CheckBox。

您是否尝试过有条不紊地更新View的可见度，具体取决于项isChecked（和不 isSelected）？

Answer 2

你应该为每个图像设置标记以跟踪其状态（0 =未选中/不可见，1 =选择/可见），例如：

 if (responseList.get(position).isSelected()) {
        iv_choice_list_item_selected.setTag(1);
    }

你可以添加：

 if (iv_choice_list_item_selected.getTag() == 1) {
        iv_choice_list_item_selected.setVisibility(View.VISIBLE);
    } else {
        iv_choice_list_item_selected.setVisibility(View.GONE);
    }

列表视图显示先前的选择[ANDROID]

2 个答案: