-XML中头部可以到网上找一个这里就不放上来了
.checkbox和button的样式可以根据个人喜好设置。
Adaper中的代码：
public class ShoppingCartAdapter extends BaseAdapter {
private Context context;
private List<Test> loans;
private LayoutInflater inflater;
private static HashMap<Integer, Boolean> isSelected;
private static HashMap<Integer, Integer> numbers;
private Handler handler;
int num;// 商品数量
static class ViewHolder { // 自定义控件集合
public CheckBox ck_select;
public ImageView pic_goods;
public TextView id_goods;
public TextView color_goods;
public TextView type_goods;
public TextView integral_goods;
public AddMinusWidget add_minus;
public LinearLayout layout;
public TextView number;
public Button minus;
public Button plus;
}
/**
* 实例化Adapter
*
* @param context
* @param data
*/
public ShoppingCartAdapter(Context context, Handler handler, List<Test> data) {
this.context = context;
this.inflater = LayoutInflater.from(context);
this.loans = data;
this.handler = handler;
isSelected = new HashMap<Integer, Boolean>();
numbers = new HashMap<Integer, Integer>();
initDate();
}
private void initDate() {
for (int i = 0; i < loans.size(); i++) {
getIsSelected().put(i, false);
getNumbers().put(i, 1);
}
}
@Override
public int getCount() {
return loans.size();
}
@Override
public Object getItem(int position) {
return loans.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
// 自定义视图
ViewHolder itemView = null;
if (convertView == null) {
// 获取list_item布局文件的视图
itemView = new ViewHolder();
convertView = inflater.inflate(R.layout.list_shopping_cart_item,
null);
// 获取控件对象
itemView.ck_select = (CheckBox) convertView
.findViewById(R.id.ck_select);
itemView.pic_goods = (ImageView) convertView
.findViewById(R.id.pic_goods);
itemView.id_goods = (TextView) convertView
.findViewById(R.id.id_goods);
itemView.color_goods = (TextView) convertView
.findViewById(R.id.color_goods);
itemView.type_goods = (TextView) convertView
.findViewById(R.id.type_goods);
itemView.integral_goods = (TextView) convertView
.findViewById(R.id.integral_goods);
itemView.number = (TextView) convertView.findViewById(R.id.number);
itemView.minus = (Button) convertView.findViewById(R.id.minus);
itemView.plus = (Button) convertView.findViewById(R.id.plus);
convertView.setTag(itemView);
} else {
itemView = (ViewHolder) convertView.getTag();
}
init(itemView, position);
itemView.ck_select.setChecked(getIsSelected().get(position));
itemView.number.setText(getNumbers().get(position).toString());
if (getIsSelected().get(position)) {
itemView.ck_select.setChecked(true);
} else {
itemView.ck_select.setChecked(false);
}
String a = itemView.number.getText().toString();
loans.get(position).setNum(Integer.valueOf(a));
Test test = loans.get(position);
itemView.id_goods.setText((CharSequence) test.getId());
itemView.color_goods.setText((CharSequence) test.getColor());
itemView.type_goods.setText((CharSequence) test.getType());
itemView.integral_goods.setText((CharSequence) test.getIntegral());
itemView.pic_goods.setImageResource(R.drawable.shopping);
return convertView;
}
private void init(final ViewHolder itemView, final int position) {
itemView.ck_select
.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
isSelected.put(position, true);
getIsSelected().put(position, isChecked);
itemView.ck_select.setChecked(getIsSelected().get(
position));
handler.sendMessage(handler.obtainMessage(10,
getTotalPrice()));
Iterator iterator = isSelected.entrySet().iterator();
List<Boolean> array = new ArrayList<Boolean>();
while (iterator.hasNext()) {
HashMap.Entry entry = (HashMap.Entry) iterator
.next();
Integer key = (Integer) entry.getKey();
Boolean val = (Boolean) entry.getValue();
array.add(val);
}
handler.sendMessage(handler.obtainMessage(11, array));
}
});
final String numString = itemView.number.getText().toString();
itemView.plus.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (numString == null || numString.equals("")) {
num = 1;
itemView.number.setText("1");
} else {
if (++num < 1) // 先加，再判断
{
num--;
Toast.makeText(context, "请输入一个大于0的数字",
Toast.LENGTH_SHORT).show();
} else {
itemView.number.setText(String.valueOf(num));
loans.get(position).setNum(num);
numbers.put(position, num);
handler.sendMessage(handler.obtainMessage(10,
getTotalPrice()));
Log.i("test", "+:" + num);
}
}
}
});
itemView.minus.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (numString == null || numString.equals("")) {
num = 1;
itemView.number.setText("1");
} else {
if (--num < 1) // 先加，再判断
{
num++;
Log.i("test", "-:" + num);
Toast.makeText(context, "请输入一个大于0的数字",
Toast.LENGTH_SHORT).show();
Log.i("test", "-:" + num);
} else {
itemView.number.setText(String.valueOf(num));
Log.i("test", "-:" + num);
loans.get(position).setNum(num);
numbers.put(position, num);
handler.sendMessage(handler.obtainMessage(10,
getTotalPrice()));
}
}
}
});
}
/**
* 计算选中商品的积分
*
* @return 返回需要付费的总积分
*/
private float getTotalPrice() {
Test bean = null;
float totalPrice = 0;
for (int i = 0; i < loans.size(); i++) {
bean = loans.get(i);
if (ShoppingCartAdapter.getIsSelected().get(i)) {
totalPrice += bean.getNum()
* Integer.valueOf(bean.getIntegral());
}
}
return totalPrice;
}
public static HashMap<Integer, Boolean> getIsSelected() {
return isSelected;
}
public static void setIsSelected(HashMap<Integer, Boolean> isSelected) {
ShoppingCartAdapter.isSelected = isSelected;
}
public static HashMap<Integer, Integer> getNumbers() {
return numbers;
}
public static void setNumbers(HashMap<Integer, Integer> numbers) {
ShoppingCartAdapter.numbers = numbers;
}
}
