购物车实现
自定义二级列表
public class MyExpandableListView extends ExpandableListView{
public MyExpandableListView(Context context) {
super(context);
}
public MyExpandableListView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public MyExpandableListView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
// TODO Auto-generated method stub
int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
}
}
二级列表适配器
public class Adapter_Cart extends BaseExpandableListAdapter {
private Context context;
private CartBean cartBean;
private sendFlag sendFlag;
public Adapter_Cart(Context context, CartBean cartBean, Adapter_Cart.sendFlag sendFlag) {
this.context = context;
this.cartBean = cartBean;
this.sendFlag = sendFlag;
}
@Override
public int getGroupCount() {
return cartBean.getData().size();
}
@Override
public int getChildrenCount(int groupPosition) {
return cartBean.getData().get(groupPosition).getList().size();
}
@Override
public Object getGroup(int groupPosition) {
return cartBean.getData().get(groupPosition);
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return cartBean.getData().get(groupPosition).getList().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 true;
}
@Override
public View getGroupView(final int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
final GroupHolder holder;
if (convertView == null) {
//获取组布局
convertView = View.inflate(context, R.layout.group_item, null);
//实例GroupHolder
holder = new GroupHolder();
//获取控件
holder.groupCheck = (CheckBox) convertView.findViewById(R.id.group_check);
holder.groupName = (TextView) convertView.findViewById(R.id.group_name);
convertView.setTag(holder);
} else {
holder = (GroupHolder) convertView.getTag();
}
//赋值
holder.groupName.setText(cartBean.getData().get(groupPosition).getSellerName());
holder.groupCheck.setChecked(cartBean.getData().get(groupPosition).isSischecked());
//全选点击事件
holder.groupCheck.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//得到状态
boolean checked = holder.groupCheck.isChecked();
//赋值
cartBean.getData().get(groupPosition).setSischecked(checked);
//店铺是否选择 此店铺所有商品也跟着是否选择
for (int i = 0; i < cartBean.getData().get(groupPosition).getList().size(); i++) {
cartBean.getData().get(groupPosition).getList().get(i).setIschecked(checked);
}
//刷新适配器
notifyDataSetChanged();
//总价格 总数量 是否全选
double t = 0;
int count = 0;
boolean flag = true;
for (int i = 0; i < cartBean.getData().size(); i++) {
for (int j = 0; j < cartBean.getData().get(i).getList().size(); j++) {
if (cartBean.getData().get(i).getList().get(j).ischecked()){
t+=cartBean.getData().get(i).getList().get(j).getPrice()*cartBean.getData().get(i).getList().get(j).getNum();
count+=cartBean.getData().get(i).getList().get(j).getNum();
}
}
if (!cartBean.getData().get(i).isSischecked()){
flag = false;
}
}
//接口传值
sendFlag.sendFlags(flag);
sendFlag.sendTotalAndCounts(t,count);
}
});
return convertView;
}
@Override
public View getChildView(final int groupPosition, final int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
final ChildHolder holder;
if (convertView == null) {
//获取组布局
convertView = View.inflate(context, R.layout.child_item, null);
//实例GroupHolder
holder = new ChildHolder();
//获取控件
holder.childCheck = (CheckBox) convertView.findViewById(R.id.child_check);
holder.childTitle = (TextView) convertView.findViewById(R.id.child_title);
holder.childPrice = (TextView) convertView.findViewById(R.id.child_price);
holder.childSubhead = (TextView) convertView.findViewById(R.id.child_subhead);
holder.childPic = (ImageView) convertView.findViewById(R.id.child_pic);
holder.addsub = (NumberAddSubView) convertView.findViewById(R.id.addsub);
convertView.setTag(holder);
} else {
holder = (ChildHolder) convertView.getTag();
}
holder.addsub.setMaxValue(Integer.MAX_VALUE);
String[] strings = cartBean.getData().get(groupPosition).getList().get(childPosition).getImages().split("\\|");
Glide.with(context).load(strings[0]).into(holder.childPic);
holder.childCheck.setChecked(cartBean.getData().get(groupPosition).getList().get(childPosition).ischecked());
holder.childTitle.setText(cartBean.getData().get(groupPosition).getList().get(childPosition).getTitle());
holder.childSubhead.setText(cartBean.getData().get(groupPosition).getList().get(childPosition).getSubhead());
holder.childPrice.setText(cartBean.getData().get(groupPosition).getList().get(childPosition).getPrice()+"");
holder.addsub.setValue(cartBean.getData().get(groupPosition).getList().get(childPosition).getNum());
//复选框点击监听
holder.childCheck.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
boolean checked = holder.childCheck.isChecked();
//赋值
cartBean.getData().get(groupPosition).getList().get(childPosition).setIschecked(checked);
//确定店铺状态
boolean s_flag = true;
for (int i = 0; i < cartBean.getData().get(groupPosition).getList().size(); i++) {
if (!cartBean.getData().get(groupPosition).getList().get(i).ischecked()){
s_flag = false;
}
}
cartBean.getData().get(groupPosition).setSischecked(s_flag);
//刷新适配器
notifyDataSetChanged();
//总价格 总数量 是否全选
double t = 0;
int count = 0;
boolean flag = true;
for (int i = 0; i < cartBean.getData().size(); i++) {
for (int j = 0; j < cartBean.getData().get(i).getList().size(); j++) {
if (cartBean.getData().get(i).getList().get(j).ischecked()){
t+=cartBean.getData().get(i).getList().get(j).getPrice()*cartBean.getData().get(i).getList().get(j).getNum();
count+=cartBean.getData().get(i).getList().get(j).getNum();
}
}
if (!cartBean.getData().get(i).isSischecked()){
flag = false;
}
}
//接口传值
sendFlag.sendFlags(flag);
sendFlag.sendTotalAndCounts(t,count);
}
});
return convertView;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
class GroupHolder {
private CheckBox groupCheck;
private TextView groupName;
}
class ChildHolder {
private CheckBox childCheck;
private TextView childTitle;
private TextView childSubhead;
private TextView childPrice;
private ImageView childPic;
private NumberAddSubView addsub;
}
public interface sendFlag {
void sendFlags(boolean flag);
void sendTotalAndCounts(double t, int count);
}
}
