listview 结合checkbox 实现多选

adapter 里面：

package com.gdkj.gddoctor.robotdoctor.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.TextView;

import com.gdkj.gddoctor.library.views.CircularImage;
import com.gdkj.gddoctor.library.views.sortlist.SortModel;
import com.gdkj.gddoctor.robotdoctor.R;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

/**
 * Created by 时间辉 on 2017/8/28.
 */

public class ChooseAdapter extends BaseAdapter {
    private List mList = null;
    private Context mContext;
    private LayoutInflater mInflater;
    private static HashMap  isSelected;
    public ChooseAdapter(Context mContext) {
        this.mContext = mContext;
        this.mInflater = LayoutInflater.from(mContext);
        this.isSelected = new HashMap();

    }
    /**
     * 当ListView数据发生变化时,调用此方法来更新ListView
     * @param list
     */
    public void updateListView(List list){
        this.mList = list;
        initDate();
        notifyDataSetChanged();
    }

    // 初始化isSelected的数据
    private void initDate(){
        for(int i=0; i             getIsSelected().put(i,false);
        }
    }

    @Override
    public int getCount() {
        if (mList == null) {
            mList = new ArrayList<>();
        }
        return mList.size();
    }

    @Override
    public Object getItem(int position) {
        return mList.get(position);
    }

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

    @Override
    public View getView(final int position, View view, ViewGroup parent) {
        ViewHolder viewHolder = null;
        final SortModel mContent = mList.get(position);
        if (view == null) {
            viewHolder = new ViewHolder();
            view = mInflater.from(mContext).inflate(R.layout.item_choose, null);
            viewHolder.mName = (TextView) view.findViewById(R.id.item_choose_name);
            viewHolder.mAge = (TextView) view.findViewById(R.id.item_choose_age);
            viewHolder.mPhone = (TextView) view.findViewById(R.id.item_choose_phone);
            viewHolder.mLetter = (TextView) view.findViewById(R.id.catalog);
            viewHolder.mHead = (CircularImage) view.findViewById(R.id.item_choose_head);
            viewHolder.mState = (CheckBox) view.findViewById(R.id.item_choose_state);
            view.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) view.getTag();
        }
        //根据position获取分类的首字母的Char ascii值
        int section = getSectionForPosition(position);

        //如果当前位置等于该分类首字母的Char的位置 ，则认为是第一次出现
        if(position == getPositionForSection(section)){
            viewHolder.mLetter.setVisibility(View.VISIBLE);
            viewHolder.mLetter.setText(mContent.getSortLetters());
        }else{
            viewHolder.mLetter.setVisibility(View.GONE);
        }

        viewHolder.mName.setText(this.mList.get(position).getName());
        viewHolder.mState.setChecked(getIsSelected().get(position));
        viewHolder.mState.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                isSelected.put(position,isChecked);
            }
        });
        return view;
    }

    public static class ViewHolder {
        private TextView mLetter;
        private TextView mName;
        private TextView mAge;
        private TextView mPhone;
        private TextView mAddress;
        private CircularImage mHead;
        public CheckBox mState;
    }
    /**
     * 根据ListView的当前位置获取分类的首字母的Char ascii值
     */
    public int getSectionForPosition(int position) {
        return mList.get(position).getSortLetters().charAt(0);
    }

    /**
     * 根据分类的首字母的Char ascii值获取其第一次出现该首字母的位置
     */
    public int getPositionForSection(int section) {
        for (int i = 0; i < getCount(); i++) {
            String sortStr = mList.get(i).getSortLetters();
            char firstChar = sortStr.toUpperCase().charAt(0);
            if (firstChar == section) {
                return i;
            }
        }

        return -1;
    }

    /**
     * 提取英文的首字母，非英文字母用#代替。
     *
     * @param str
     * @return
     */
    private String getAlpha(String str) {
        String  sortStr = str.trim().substring(0, 1).toUpperCase();
        // 正则表达式，判断首字母是否是英文字母
        if (sortStr.matches("[A-Z]")) {
            return sortStr;
        } else {
            return "#";
        }
    }

    public Object[] getSections() {
        return null;
    }

    public static HashMap getIsSelected() {
        return isSelected;
    }

    public static void setIsSelected(HashMap isSelected) {
        ChooseAdapter.isSelected = isSelected;
    }

}

获取选中的值：

private List listItemID = new ArrayList();

listItemID.clear();
for (int i = 0; i < adapter.getIsSelected().size(); i++) {
    if (adapter.getIsSelected().get(i)) {
        listItemID.add(SourceDateList.get(i).getName());
    }
}
GLog.e(listItemID.toString());
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作者：涛生枫落 
来源：CSDN 
原文：https://blog.csdn.net/qq_36613843/article/details/77649517 
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