Android之ListView包含RadioButton的单选问题解决办法

1.最简洁的解决办法。

adapter里保存当前选中的位置变量,getView方法里,禁用radiobutton的点击事件,只通过listview的onItemClick事件设置选中位置变量,并且通过notifyDataSetChanged刷新列表。getView方法里当前项位置为选中项时设置radiobutton为选中状态。否则为未选中状态。通过adapter.getSelectedItem方法获取当前选中项数据。

注意:本来想着让阻塞radiobutton的获取焦点、获取点击事件,试了各种设置,最后发现rb_status.setClickable(false);禁用radiobutton的点击事件是有效的。


lv_opt.setAdapter(adapter);
		lv_opt.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> parent, View view,
					int position, long id) {
				adapter.setSelectedIndex(position);
			}
		});


public class AdapterOptionList extends BaseAdapter<OptionItem> {

	public AdapterOptionList(Context context, List<OptionItem> list) {
		super(context, list);
	}
/**
<span style="white-space:pre">	</span> * 设置选中的项目
<span style="white-space:pre">	</span> * 
<span style="white-space:pre">	</span> * @param position
<span style="white-space:pre">	</span> */
<span style="white-space:pre">	</span>public void setSelectedIndex(int position) {
<span style="white-space:pre">		</span>this.selectedIndex = position;
<span style="white-space:pre">		</span>notifyDataSetChanged();
<span style="white-space:pre">	</span>}
	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		ViewHolder viewHolder;
		if (null == convertView) {
			viewHolder = new ViewHolder();
			LayoutInflater inflater = LayoutInflater.from(context);
			convertView = inflater.inflate(R.layout.item_opt,null);
			viewHolder.rb_status = (RadioButton) convertView
					.findViewById(R.id.rb_status);
			viewHolder.tv_title_opt = (TextView) convertView
					.findViewById(R.id.tv_title_opt);
			viewHolder.tv_opt_detail = (TextView) convertView
					.findViewById(R.id.tv_opt_detail);
			convertView.setTag(viewHolder);
		} else {
			viewHolder = (ViewHolder) convertView.getTag();
		}
		viewHolder.rb_status.setClickable(false);

		OptionItem opt = list.get(position);
		if(selectedIndex == position){
			viewHolder.rb_status.setChecked(true);
			opt.setSeletedStatus(true);
		}else{
			viewHolder.rb_status.setChecked(false);
			opt.setSeletedStatus(false);
		}
		
		viewHolder.tv_title_opt.setText(opt.getName());
		viewHolder.tv_opt_detail.setText(opt.getDiscription());
		return convertView;
	}

	class ViewHolder {
		RadioButton rb_status;
		TextView tv_title_opt;
		TextView tv_opt_detail;
	}
}

2.最简单粗暴的办法。

adapter里设置每一个radiobutton的状态集合变量,在radiobutton的setOnCheckedChangeListener方法里设置集合里的每个radiobutton状态,然后通过notifyDataSetChanged刷新列表。

比如http://blog.csdn.net/checkin001/article/details/11519131

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