Android 仿京东购物车
因为项目中需要用到购物车，在网上找了很久，一直没有找到一个满意的购物车demo，所以自己花了一天时间，仿写了一个，因为项目中的购物车没有接口，所以购物车的商品信息都是从商品详情哪里得来的，具体步骤如下：
一、获取商品信息添加到sqlite：
这一步我就不详细说了，怎么添加信息到sqlite中，不是很懂的同学可以去我之前写的Android SQLite增删查改哪里查看，有详细代码实现。
点击打开链接
二、购物车页面以及item如下：
listview：
三、接下来就是重点了，适配器我是写在Activity下面的，因为在购物车页面我需要操作对应“+”和“-“事件，其中在item中监听事件第一次做的时候不是很懂，仔细研究了挺久的，详细代码如下，不懂的可以提问的呢，哈哈，简单的购物车功能就是这样子了：
public class ShoppingCartActivity extends Activity {
private TextView back;
private ListView mListView;
private TextView delete_table;
private TextView total_order;
private TextView update_order;
SqliteService sqliteService;
List list;
private List intenetlistDetials = new ArrayList();
ShoppingAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
AppManager.getInstance().addActivity(ShoppingCartActivity.this);
setContentView(R.layout.activity_add_to_shopping_car);
initView();
setListener();
}
private void initView() {
back = (TextView) findViewById(R.id.shopping_detail_product_back);
mListView = (ListView) findViewById(R.id.shopping_order_listview1);
delete_table = (TextView) findViewById(R.id.shopping_detele_table);
total_order = (TextView) findViewById(R.id.shopping_order_total);
update_order = (TextView) findViewById(R.id.update_order);
sqliteService = new SqliteService(ShoppingCartActivity.this);
List> mList = new ArrayList>();
list = new ArrayList();
OrderDetial orderDetial = null;
mList = sqliteService.listOederMaps(null);
if (mList == null) {
return;
}
for (int i = 0; i < mList.size(); i++) {
Map map = mList.get(i);
String idString = mList.get(i).get("id").toString();
String product_id = mList.get(i).get("product_id").toString();
String product_name = mList.get(i).get("product_name").toString();
String product_num = mList.get(i).get("product_num").toString();
String product_integral = mList.get(i).get("product_integral")
.toString();
String product_pic = mList.get(i).get("product_pic").toString();
int id = Integer.parseInt(idString);
orderDetial = new OrderDetial(id, product_id, product_num,
product_name, product_integral, product_pic, false);
list.add(orderDetial);
}
LogUtils.e("product_list", list.toString());
adapter = new ShoppingAdapter(this, list);
mListView.setAdapter(adapter);
}
private void setListener() {
back.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
AppManager.getInstance().finishActivity(
ShoppingCartActivity.this);
}
});
delete_table.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
sqliteService.deleteOeder(null);
}
});
}
/**
* 适配器是我之前自己封装的
* @author zengyi
*/
class ShoppingAdapter extends MyAdapter_CommonAdapter {
TextView product_num1;
TextView product_num2;
public ShoppingAdapter(Context context, List datas) {
super(context, datas);
}
@Override
public View getView(final int position, View convertView,
ViewGroup parent) {
ViewHolder holder = ViewHolder.getHolder(mContext, convertView,
parent,
com.example.otc.R.layout.item_activity_add_to_shopping_car,
position);
final OrderDetial bean = list.get(position);
((TextView) holder.getView(R.id.shopping_name)).setText(bean
.getProduct_name());
((TextView) holder.getView(R.id.shopping_integral)).setText(bean
.getProduct_integral());
ImageView mJia = holder.getView(R.id.shopping_order_jia);
ImageView mJian = holder.getView(R.id.shopping_order_jian);
product_num1 = ((TextView) holder
.getView(R.id.order_shopping_num_1));
product_num2 = ((TextView) holder
.getView(R.id.order_shopping_num_2));
product_num2.setText(bean.getProduct_num());
product_num1.setText(bean.getProduct_num());
mJia.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
int p_num = Integer.parseInt(list.get(position)
.getProduct_num());
p_num += 1;
list.get(position).setProduct_num(p_num + "");
// product_num2.setText(p_num + "");
adapter.notifyDataSetChanged();
}
});
mJian.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int p_num = Integer.parseInt(list.get(position)
.getProduct_num());
if (p_num > 1) {
p_num--;
list.get(position).setProduct_num(p_num + "");
adapter.notifyDataSetChanged();
} else if (p_num == 1) {
p_num = 1;
list.get(position).setProduct_num("1");
// product_num1.setText(p_num + "");
adapter.notifyDataSetChanged();
}
}
});
MyImageLoader.getInstance(mContext).displayImage(
bean.getProduct_pic(),
(ImageView) holder.getView(R.id.shopping_images));
boolean ischeck = list.get(position).isIscheck();
final CheckBox checkBox = (CheckBox) holder
.getView(R.id.shopping_checkBox1);
if (ischeck == false) {// checkbox ischeck
checkBox.setChecked(false);
} else {
checkBox.setChecked(true);
}
// check
checkBox.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
if (checkBox.isChecked() == true) {
checkBox.setChecked(true);
intenetlistDetials.add(bean);
list.get(position).setIscheck(true);
} else {
checkBox.setChecked(false);
intenetlistDetials.remove(bean);
list.get(position).setIscheck(false);
}
dogeSum(intenetlistDetials);
notifyDataSetChanged();
}
});
return holder.getmConvertView();
}
}
/**
* 计算总价
* @param intenetlistDetials
*/
private void dogeSum(List intenetlistDetials) {
double mdoubTotal = 0;
if (intenetlistDetials.size()==0) {
total_order.setText(0+"");
}
for (int i = 0; i < intenetlistDetials.size(); i++) {
int price = Integer.parseInt(intenetlistDetials.get(i)
.getProduct_num())
* Integer.parseInt(intenetlistDetials.get(i)
.getProduct_integral());
mdoubTotal += price;
total_order.setText(mdoubTotal+"");
}
}
} 四、最后运行项目结果如下：
