Android(安卓)Studio购物车，结算，二级目录

package com.bwei.shoppingcart.activity;import android.database.DataSetObserver;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.view.View;import android.view.ViewGroup;import android.widget.CheckBox;import android.widget.ExpandableListAdapter;import android.widget.TextView;import com.bwei.shoppingcart.R;import com.bwei.shoppingcart.bean.PhonesInfo;import com.bwei.shoppingcart.utils.OkHttp3Utils;import com.bwei.shoppingcart.view.CustomExpandableListView;import com.google.gson.Gson;import java.io.IOException;import java.util.List;import okhttp3.Call;import okhttp3.Callback;import okhttp3.Response;/** * 1. 类的用途 * 2. @author forever * 3. @date 2017/9/6 22:20 */public class OtherActivity extends AppCompatActivity implements View.OnClickListener {    private CustomExpandableListView celv;    private CheckBox checkBox;    private TextView tv_num;    private TextView tv_price;    private PhonesInfo phonesInfo;    private PhoneAdapter adapter;    private Handler handler = new Handler() {        @Override        public void handleMessage(Message msg) {            super.handleMessage(msg);            switch (msg.what) {                case 1:                    String str = (String) msg.obj;                    Log.i("xxx", str.toString());                    Gson gson = new Gson();                    phonesInfo = gson.fromJson(str, PhonesInfo.class);                    //适配配                    adapter = new PhoneAdapter();                    celv.setAdapter(adapter);                    int count = celv.getCount();                    for (int i = 0; i < count; i++) {                        //展开                        celv.expandGroup(i);                    }                    break;            }        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_other);        //获取数据        getData();        //找控件        celv = (CustomExpandableListView) findViewById(R.id.celv);        checkBox = (CheckBox) findViewById(R.id.checkbox2);        tv_num = (TextView) findViewById(R.id.tv_num);        tv_price = (TextView) findViewById(R.id.tv_price);        //去掉箭头        celv.setGroupIndicator(null);        //CheckBox点击事件        checkBox.setOnClickListener(this);    }    //获取数据    private void getData() {        String url = "http://result.eolinker.com/iYXEPGn4e9c6dafce6e5cdd23287d2bb136ee7e9194d3e9?uri=evaluation";        OkHttp3Utils.doGet(url, new Callback() {            @Override            public void onFailure(Call call, IOException e) {            }            @Override            public void onResponse(Call call, Response response) throws IOException {                String string = response.body().string();                Log.i("xxx", string.toString());                Message message = handler.obtainMessage(1, string);                message.sendToTarget();            }        });    }    //全选的监听    @Override    public void onClick(View v) {        if (((CheckBox) v).isChecked()) {            List data = phonesInfo.getData();            for (int i = 0; i < data.size(); i++) {                Log.i("xxx", data.get(i).isAllCheck() + "");                PhonesInfo.DataInfo groupDatas = phonesInfo.getData().get(i);                groupDatas.setAllCheck(true);                List datas = data.get(i).getDatas();                for (int j = 0; j < datas.size(); j++) {                    Log.i("xxx", datas.get(j).isItemCheck() + "");                    List childDatas = groupDatas.getDatas();                    for (PhonesInfo.DataInfo.DatasInfo childData : childDatas) {                        childData.setItemCheck(true);                    }                }            }            //刷新界面            notifyCheckAdapter();        } else {            List data = phonesInfo.getData();            for (int i = 0; i < data.size(); i++) {                Log.i("xxx", data.get(i).isAllCheck() + "");                PhonesInfo.DataInfo groupDatas = phonesInfo.getData().get(i);                groupDatas.setAllCheck(false);                List datas = data.get(i).getDatas();                for (int j = 0; j < datas.size(); j++) {                    Log.i("xxx", datas.get(j).isItemCheck() + "");                    List childDatas = groupDatas.getDatas();                    for (PhonesInfo.DataInfo.DatasInfo childData : childDatas) {                        childData.setItemCheck(false);                    }                }            }            //刷新界面            notifyCheckAdapter();        }    }    //适配器    private class PhoneAdapter implements ExpandableListAdapter {        @Override        public void registerDataSetObserver(DataSetObserver observer) {        }        @Override        public void unregisterDataSetObserver(DataSetObserver observer) {        }        @Override        public int getGroupCount() {            return phonesInfo.getData().size();        }        @Override        public int getChildrenCount(int groupPosition) {            return phonesInfo.getData().get(groupPosition).getDatas().size();        }        @Override        public Object getGroup(int groupPosition) {            return phonesInfo.getData().get(groupPosition);        }        @Override        public Object getChild(int groupPosition, int childPosition) {            return phonesInfo.getData().get(groupPosition).getDatas().get(childPosition);        }        @Override        public long getGroupId(int groupPosition) {            return groupPosition;        }        @Override        public long getChildId(int groupPosition, int childPosition) {            return childPosition;        }        @Override        public boolean hasStableIds() {            return false;        }        //一级        @Override        public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {            View view = View.inflate(OtherActivity.this, R.layout.item_parent_market, null);            CheckBox cb_parent = (CheckBox) view.findViewById(R.id.cb_parent);            TextView tv_number = (TextView) view.findViewById(R.id.tv_number);            tv_number.setText(phonesInfo.getData().get(groupPosition).getTitle());            if (phonesInfo.getData().get(groupPosition).isAllCheck()) {                cb_parent.setChecked(true);            } else {                cb_parent.setChecked(false);            }            //一级监听            cb_parent.setOnClickListener(new OnGroupClickListener(groupPosition, cb_parent));            return view;        }        //二级        @Override        public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {            View view = View.inflate(OtherActivity.this, R.layout.item_child_market, null);            TextView tv_content = (TextView) view.findViewById(R.id.tv_content);            TextView tv_time = (TextView) view.findViewById(R.id.tv_time);            TextView tv_pri = (TextView) view.findViewById(R.id.tv_pri);            CheckBox cb_child = (CheckBox) view.findViewById(R.id.cb_child);            tv_pri.setText(phonesInfo.getData().get(groupPosition).getDatas().get(childPosition).getPrice() + "");            tv_content.setText(phonesInfo.getData().get(groupPosition).getDatas().get(childPosition).getType_name());            tv_time.setText(phonesInfo.getData().get(groupPosition).getDatas().get(childPosition).getAdd_time());            if (phonesInfo.getData().get(groupPosition).getDatas().get(childPosition).isItemCheck()) {                cb_child.setChecked(true);            } else {                cb_child.setChecked(false);            }            cb_child.setOnClickListener(new OnChildCheckListener(groupPosition, childPosition, cb_child));            return view;        }        @Override        public boolean isChildSelectable(int groupPosition, int childPosition) {            return true;        }        @Override        public boolean areAllItemsEnabled() {            return false;        }        @Override        public boolean isEmpty() {            return false;        }        @Override        public void onGroupExpanded(int groupPosition) {        }        @Override        public void onGroupCollapsed(int groupPosition) {        }        @Override        public long getCombinedChildId(long groupId, long childId) {            return 0;        }        @Override        public long getCombinedGroupId(long groupId) {            return 0;        }    }    //一级监听    private class OnGroupClickListener implements View.OnClickListener {        int groupPosition;        CheckBox cb_parent;        public OnGroupClickListener(int groupPosition, CheckBox cb_parent) {            this.cb_parent = cb_parent;            this.groupPosition = groupPosition;        }        @Override        public void onClick(View v) {            if (((CheckBox) v).isChecked()) {                //一级全选                setCheck(true);            } else {                //取消全选                setCheck(false);                checkBox.setChecked(false);            }            notifyCheckAdapter();        }        public void setCheck(boolean checkFlag) {            PhonesInfo.DataInfo groupDatas = phonesInfo.getData().get(groupPosition);            List data = phonesInfo.getData();            //一级状态            groupDatas.setAllCheck(checkFlag);            //全选状态判断            int num = 0;            for (int i = 0; i < data.size(); i++) {                boolean allCheck = data.get(i).isAllCheck();                if (!allCheck) {                    num++;                }            }            if (num == 0) {                checkBox.setChecked(true);            } else {                checkBox.setChecked(false);            }            //二级状态            List childDatas = groupDatas.getDatas();            for (PhonesInfo.DataInfo.DatasInfo childData : childDatas) {                //二级状态                childData.setItemCheck(checkFlag);            }        }    }    //二级监听    private class OnChildCheckListener implements View.OnClickListener {        int groupPosition;        int childPosition;        CheckBox cb_child;        public OnChildCheckListener(int groupPosition, int childPosition, CheckBox cb_child) {            this.cb_child = cb_child;            this.groupPosition = groupPosition;            this.childPosition = childPosition;        }        @Override        public void onClick(View v) {            if (((CheckBox) v).isChecked()) {                //子选中                phonesInfo.getData().get(groupPosition).getDatas().get(childPosition).setItemCheck(true);            } else {                //子未选中                phonesInfo.getData().get(groupPosition).getDatas().get(childPosition).setItemCheck(false);            }            //二级联动一级状态            setParentCheckFlag();            //检测状态 二级联动全选            int num = 0;            for (int i = 0; i < phonesInfo.getData().size(); i++) {                boolean allCheck = phonesInfo.getData().get(i).isAllCheck();                if (!allCheck) {                    num++;                }            }            if (num == 0) {                checkBox.setChecked(true);            } else {                checkBox.setChecked(false);            }        }        //二级联动一级状态        private void setParentCheckFlag() {            PhonesInfo.DataInfo dataInfo = phonesInfo.getData().get(groupPosition);            List datasInfos = dataInfo.getDatas();            for (int i = 0; i < datasInfos.size(); i++) {                if (!datasInfos.get(i).isItemCheck()) {                    //子未选中 父取消选中                    dataInfo.setAllCheck(false);                    notifyCheckAdapter();                    return;                }                if (i == datasInfos.size() - 1) {                    //子选中 父选中                    dataInfo.setAllCheck(true);                    notifyCheckAdapter();                    return;                }            }//            没出现全选或者取消全选的时候执行的            sum();        }    }    //统计数量和价格    private void sum() {        int num = 0;        int price = 0;        List data = phonesInfo.getData();        for (PhonesInfo.DataInfo parentData : data) {            for (PhonesInfo.DataInfo.DatasInfo child : parentData.getDatas()) {                if (child.isItemCheck()) {                    num++;                    price += child.getPrice();                }            }        }        tv_num.setText("结算(" + num + ")");        tv_price.setText("¥" + price);    }    //刷新适配器界面    private void notifyCheckAdapter() {        sum();        celv.setAdapter(adapter);        int count = celv.getCount();        for (int i = 0; i < count; i++) {            celv.expandGroup(i);        }    }}
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