Android 在单击按钮时在自定义 ListView 中隐藏和显示复选框

Question

我使用下面给出的适配器。我在图中解释。数字仅供引用。我在单行中使用 textview 和复选框。 textviews 应该出现并且复选框最初隐藏。按下按钮后复选框应该出现并且 textview 保持不变。请帮助我。提前谢谢..

 public class Adapter extends ArrayAdapter<SectionsModel>{

    private ArrayList<SectionsModel> list;
    public Adapter(Context context, int resource, ArrayList<SectionsModel> objects) {
        super(context, resource, objects);
        this.list = new ArrayList<SectionsModel>();
        this.list.addAll(objects);
    }

    ViewHolder v = new ViewHolder();
    public void setcheckbox() {

        Log.d("viewholser" + v, "checkbox" + v.selected);

        v.selected.setVisibility(View.VISIBLE);

    }

    public class ViewHolder {
        public TextView setting;
        public CheckBox selected;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {


        ViewHolder holder = null;
        if (convertView == null) {

            LayoutInflater vi = (LayoutInflater)getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            convertView = vi.inflate(R.layout.menu_frame_child, null);
            holder = new ViewHolder();

            holder.setting = (TextView) convertView.findViewById(R.id.child_setting_header);
            holder.selected = (CheckBox) convertView.findViewById(R.id.settings_check);

        //  holder.selected.setVisibility(View.INVISIBLE);

            convertView.setTag(holder);

            //holder.selected.setVisibility(View.INVISIBLE);

            holder.selected.setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) {
                    CheckBox cb = (CheckBox) v;
                    SectionsModel _state = (SectionsModel) cb.getTag();
                    _state.setSelected(cb.isChecked());
                }
            });
        } else {
            holder = (ViewHolder) convertView.getTag();
        }

        SectionsModel section = list.get(position);

        holder.setting.setText(section.getSection());
        holder.selected.setChecked(section.isSelected());

        holder.selected.setTag(section);

        return convertView;
    }

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

    @Override
    public int getPosition(SectionsModel item) {

        return super.getPosition(item);
    }


}

更新:在 getview 我只是添加以下代码AppConstants.ischeckboxvisible 是变量，其中 Appconstants 是类，而 ischeckboxvisible 是该类的公共(public)静态变量。最初这个变量是假的

            if (!AppConstants.ischeckboxvisible)
            {
       holder.selected.setVisibility(View.INVISIBLE);
    }
        if (AppConstants.ischeckboxvisible)
            {
           holder.selected.setVisibility(View.VISIBLE);
        }

Answer 1

以防万一有人仍然需要它。

接下来我解决了这个问题:

在 getView - ArrayAdapter 中我设置的方法:

CheckBox checkBox = (CheckBox)listItem.findViewById(R.id.checkBox);
    checkBox.setVisibility(View.GONE);

然后在 setOnItemLongClickListener 中:

listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
        @Override
        public boolean onItemLongClick(AdapterView<?> adapterView, View view, int position, long l) {

            for(int i = 0; i != arrayList.size(); i++) {

        mCheckBox = (CheckBox) playlist.getChildAt(i).findViewById(R.id.checkBox);
        mCheckBox.setVisibility(View.VISIBLE);
    }

            return true;
        }
    });

长按任何项目后，所有复选框都会出现。