局部更新listview的问题(只更新某个item)
转:http://blog.csdn.net/wu_shu_jun/article/details/7794576
- public void updateView(int itemIndex) {
- //得到第一个可显示控件的位置,
- int visiblePosition = mListView.getFirstVisiblePosition();
- //只有当要更新的view在可见的位置时才更新,不可见时,跳过不更新
- if (itemIndex - visiblePosition >= 0) {
- //得到要更新的item的view
- View view = mListView.getChildAt(itemIndex - visiblePosition);
- //从view中取得holder
- ViewHolder holder = (ViewHolder) view.getTag();
- HashMap<String, Object> item = data.get(itemIndex);
- holder.listItem = (RelativeLayout) view.findViewById(R.id.rl_item);
- holder.ibPlay = (ImageButton) view.findViewById(R.id.ib_play);
- holder.ibDelete = (ImageButton) view.findViewById(R.id.ib_delete);
- holder.tvName = (TextView) view.findViewById(R.id.tv_record_sound_name);
- holder.tvLastModifyTime = (TextView) view
- .findViewById(R.id.tv_record_time);
- holder.tvCurrentPlayTime = (TextView) view
- .findViewById(R.id.tv_current_play_time);
- holder.tvTotalTime = (TextView) view.findViewById(R.id.tv_total_time);
- holder.sb = (MySeekBar) view.findViewById(R.id.pb_play);
- holder.layout = (LinearLayout) view
- .findViewById(R.id.play_progress_info);
- updateData(itemIndex, holder, item);
- }
- }
自定义一个adapter继承BaseAdapter,写一个如上的方法,要更新数据时,不要调用notifyDataSetChanged()方法,调用上面的方法,即可做到更新单个item
这个艹蛋的问题,纠结了我好久。总算搞定了。。。