android listview 单选功能

单选功能  提供Adapter的 处理代码

实现的思路是 用一个 map 保存下刚才选择的position  item, 在adapter里面 设置  选中状态的时候  从 map里面获取。再次点击选择其他position的item的时候，将map中上一次 保存的 position的item删掉，最后一次点击的position 在每次点击的时候用一个单独的变量保存。  在点击事件里面重新notify当前 adapter 。

  

   

    

     

    
    

     

      import java.util.ArrayList;
     
    
   

    

     

    
    

     

      import java.util.HashMap;
     
    
   

    

     

    
    

     

      import java.util.List;
     
    
   

    

     

    
    

     

      import java.util.Map;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      import android.content.Context;
     
    
   

    

     

    
    

     

      import android.view.LayoutInflater;
     
    
   

    

     

    
    

     

      import android.view.View;
     
    
   

    

     

    
    

     

      import android.view.ViewGroup;
     
    
   

    

     

    
    

     

      import android.widget.BaseAdapter;
     
    
   

    

     

    
    

     

      import android.widget.CheckBox;
     
    
   

    

     

    
    

     

      import android.widget.CompoundButton;
     
    
   

    

     

    
    

     

      import android.widget.TextView;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      import com.ccvideo.R;
     
    
   

    

     

    
    

     

      import com.yizhibo.video.bean.pay.OptionListEntity;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      public class ExchangeCoinsAdapter extends BaseAdapter {
     
    
   

    

     

    
    

     
    private Context context;
     
    
   

    

     

    
    

     
    private List<OptionListEntity> mList;
     
    
   

    

     

    
    

     
    private Map<Integer, Boolean> isCheckMap = new HashMap<Integer, Boolean>();
     
    
   

    

     

    
    

     
    private int lastPosition;
     
    
   

    

     

    
    

     
    private int checkedRmb;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    public ExchangeCoinsAdapter(Context context) {
     
    
   

    

     

    
    

     
        this.context = context;
     
    
   

    

     

    
    

     

              mList = new ArrayList<OptionListEntity>();
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    public void setData(List<OptionListEntity> list) {
     
    
   

    

     

    
    

     

              mList = list;
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    @Override
     
    
   

    

     

    
    

     
    public int getCount() {
     
    
   

    

     

    
    

     
        return mList.size();
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    @Override
     
    
   

    

     

    
    

     
    public Object getItem(int i) {
     
    
   

    

     

    
    

     
        return null;
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    @Override
     
    
   

    

     

    
    

     
    public long getItemId(int i) {
     
    
   

    

     

    
    

     
        return i;
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    @Override
     
    
   

    

     

    
    

     
    public View getView(final int i, View view, ViewGroup viewGroup) {
     
    
   

    

     

    
    

     
        ViewHolder viewHolder = null;
     
    
   

    

     

    
    

     
        if (view == null) {
     
    
   

    

     

    
    

     

                  view = LayoutInflater.from(context).inflate(R.layout.item_exchange_coins, viewGroup, false);
     
    
   

    

     

    
    

     

                  viewHolder = new ViewHolder();
     
    
   

    

     

    
    

     

                  viewHolder.exchangeCoinsTv = (TextView) view.findViewById(R.id.exchange_coins_tv);
     
    
   

    

     

    
    

     

                  viewHolder.exchangeGiveCoinsTv = (TextView) view.findViewById(R.id.exchange_coins_give_tv);
     
    
   

    

     

    
    

     

                  viewHolder.exchangeMoneyCb = (CheckBox) view.findViewById(R.id.exchange_money_tv);
     
    
   

    

     

    
    

     

                  view.setTag(viewHolder);
     
    
   

    

     

    
    

     

              } else {
     
    
   

    

     

    
    

     

                  viewHolder = (ViewHolder) view.getTag();
     
    
   

    

     

    
    

     

              }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
        final OptionListEntity model = mList.get(i);
     
    
   

    

     

    
    

     

              viewHolder.exchangeCoinsTv.setText(context.getString(R.string.e_coin_count_rear, model.getEcoin()));
     
    
   

    

     

    
    

     

              viewHolder.exchangeGiveCoinsTv
     
    
   

    

     

    
    

     

                      .setText(context.getString(R.string.e_coin_give_count_rear, model.getFree()));
     
    
   

    

     

    
    

     

              viewHolder.exchangeMoneyCb
     
    
   

    

     

    
    

     

                      .setText(context.getString(R.string.cash_count_simple, model.getRmb() / 100));
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

              viewHolder.exchangeMoneyCb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
     
    
   

    

     

    
    

     
            @Override public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
     
    
   

    

     

    
    

     
                if (isCheckMap.size() > 0) {
     
    
   

    

     

    
    

     

                          isCheckMap.remove(lastPosition);
     
    
   

    

     

    
    

     

                      }
     
    
   

    

     

    
    

     

                      checkedRmb = model.getRmb();
     
    
   

    

     

    
    

     

                      isCheckMap.put(i, true);
     
    
   

    

     

    
    

     

                      lastPosition = i;
     
    
   

    

     

    
    

     

                      ExchangeCoinsAdapter.this.notifyDataSetChanged();
     
    
   

    

     

    
    

     

                  }
     
    
   

    

     

    
    

     

              });
     
    
   

    

     

    
    

     
        if (isCheckMap != null && isCheckMap.containsKey(i)) {
     
    
   

    

     

    
    

     

                  viewHolder.exchangeMoneyCb.setSelected(isCheckMap.get(i));
     
    
   

    

     

    
    

     

              } else {
     
    
   

    

     

    
    

     

                  viewHolder.exchangeMoneyCb.setSelected(false);
     
    
   

    

     

    
    

     

              }
     
    
   

    

     

    
    

     
        return view;
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    public int getCheckedRmb() {
     
    
   

    

     

    
    

     
        return checkedRmb;
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    protected static class ViewHolder {
     
    
   

    

     

    
    

     

              TextView exchangeCoinsTv;
     
    
   

    

     

    
    

     

              TextView exchangeGiveCoinsTv;
     
    
   

    

     

    
    

     

              CheckBox exchangeMoneyCb;
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     

      }
     
    
  
 

  
 
 

文章来源: wukong.blog.csdn.net，作者：再见孙悟空_，版权归原作者所有，如需转载，请联系作者。

原文链接：wukong.blog.csdn.net/article/details/50838579