Question

我制作了一个自定义列表视图，其中每行有两个textview和一个搜索栏。我想最初只显示一个文本视图，当用户点击某个项目时，列表应该展开到全屏并显示textviews和seekbar。

这是我迄今取得的成就：

public class ExpandableListActivity extends ListActivity
{
    Context context;
    private TextView mTitle;
    private TextView mDialogue;
    private SeekBar seekbar;
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        context = this;
        // Use our own list adapter
        setListAdapter(new ListAdapter(this));
    }


    @Override
    protected void onListItemClick(ListView l, View v, int position, long id)
    {

    }


    private class ListAdapter extends BaseAdapter {
        public ListAdapter(Context context)
        {
            mContext = context;
        }

        public int getCount() {
            return mTitles.length;
        }

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

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

        public View getView(int position, View convertView, ViewGroup parent) {
            LayoutInflater inflater = ((Activity) context).getLayoutInflater();
            View rowView = inflater.inflate(R.layout.listlayout, null, true);
            mTitle = (TextView) rowView.findViewById(R.id.textView1);
            mDialogue= (TextView) rowView.findViewById(R.id.textView2);
            seekbar = (SeekBar)rowView.findViewById(R.id.seekBar1);
            mTitle.setText(mTitles[position]);
            mDialogue.setText(mDialogues[position]);

            return rowView;
        }

        private Context mContext;

        String [] mTitles = getResources().getStringArray(R.array.state_name);
        String [] mDialogues = getResources().getStringArray(R.array.capital_name);
    }
}

Answer 1

使用ExpandableListActivity或ExpandableListView。 http://techdroid.kbeanie.com/2010/09/expandablelistview-on-android.html

Answer 2

看起来您需要查看ListView tutorial。您的getView()可能有效，但在使用现有API方面效果不佳。然后使用所需的行为实现onListItemClick(...)。另外，正如Kumar Bibek所写，您可能需要查看ExpandableListView。

如何在列表视图中展开和显示元素？

2 个答案: