ListView 数据错乱问题的解决(CheckBox)

1.创建实体类时,多添加一条Boolean Checked

2. tag 运用

package com.smarttrans.phone.adapter;

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.LinearLayout;
import android.widget.TextView;

import com.smarttrans.phone.R;
import com.smarttrans.phone.bean.BrandItemInfo;

import java.util.LinkedList;
import java.util.List;

/**
* Created by ccj on 2015/12/29.
*/
public class DiaLogAdapter extends BaseAdapter {

private LinkedList<String> selectedBrands;
private Context context;
private List<BrandItemInfo> brandInfoList;
private final String TAG = "disorderlist";

public DiaLogAdapter(Context context, List<BrandItemInfo> list) {

this.context = context;
brandInfoList = list;
selectedBrands = new LinkedList<>();
}

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

@Override
public Object getItem(int i) {
return null != brandInfoList ? brandInfoList.get(i) : null;
}

@Override
public long getItemId(int i) {
return i;
}

private class ViewHolder {
private TextView brandChNameTv;
private CheckBox followCheckBox;
}

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

ViewHolder viewHolder = null;
BrandItemInfo brandItemInfo = (BrandItemInfo) getItem(i);
if (null == view) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.dialog_list_item, null);
viewHolder = new ViewHolder();
LinearLayout linearLayout = (LinearLayout) view.findViewById(R.id.ll_list_item);
viewHolder.brandChNameTv = (TextView) view.findViewById(R.id.tv_item);
viewHolder.followCheckBox = (CheckBox) view.findViewById(R.id.cb_item);
final ViewHolder finalViewHolder1 = viewHolder;

final ViewHolder finalViewHolder = viewHolder;
viewHolder.followCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
BrandItemInfo info = (BrandItemInfo) finalViewHolder.followCheckBox.getTag();//取出缓存中的数据,设定他的选中状态
info.setSelected(compoundButton.isChecked());
}
});
view.setTag(viewHolder);//将viewholder给Tag

} else {

viewHolder = (ViewHolder) view.getTag();

}
viewHolder.followCheckBox.setTag(brandItemInfo);//!!!!将项 的对象保存到 CheckBox的tag中

viewHolder.brandChNameTv.setText(brandItemInfo.getBrandChName()); //最后设定 view中的数据 viewHolder.followCheckBox.setChecked(brandItemInfo.isSelected()); return view; } }

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