我想更新每个listview项目的购物车数量。当我滚动列表视图时，会自动更改购物车计数位置。当我点击购物车按钮对话框时会弹出数字。
@覆盖 public View getView（final int position，View convertView，ViewGroup parent）{
final ViewHolder holder;
if (convertView == null) {
mInflater = Currentactivity.getLayoutInflater();
convertView = mInflater.inflate(R.layout.products_item, null);
holder = new ViewHolder();
holder.title = (TextView) convertView.findViewById(R.id.title);
holder.desc = (TextView) convertView.findViewById(R.id.desc);
holder.price = (TextView) convertView.findViewById(R.id.price);
holder.items_count = (TextView) convertView
.findViewById(R.id.items_count);
holder.product_image_imageview = (ImageView) convertView
.findViewById(R.id.product_image);
holder.bottle_image = (ImageView) convertView
.findViewById(R.id.bottle_image_set);
holder.product_cart = (FrameLayout) convertView
.findViewById(R.id.product_cart);
holder.product_cart.setTag(holder.items_count);
convertView.setTag(holder);
// holder.checkbox.setTag(list.get(position));
} else {
holder = (ViewHolder) convertView.getTag();
// holder.checkbox.setTag(list.get(position));
}
holder.product_cart.setTag(position);
holder.title.setText(productArray.get(position).get("title"));
holder.desc.setText(productArray.get(position).get("body_html"));
holder.price.setText(Currentactivity.getResources().getString(
R.string.rs)
+ "" + productArray.get(position).get("price"));
holder.product_cart.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
int pos = (Integer) v.getTag();
/*holder.items_count.setVisibility(View.VISIBLE);
holder.items_count.setText(""+pos);
*/
Log.i("pos", ""+pos);
items = showCartNumber(pos, holder.items_count);
}
});
// tviews.add(holder.items_count);
items = "";
try {`enter code here`
imageLoader.displayImage(productArray.get(position).get("image"),
holder.product_image_imageview, options);
// bottle_image.setImageResource(product_image_bottle[0]);
} catch (Exception e) {
}
return convertView;
}
static class ViewHolder {
TextView title, price, desc, items_count;
ImageView product_image_imageview, bottle_image;
FrameLayout product_cart;
}
protected String showCartNumber(final int position,
final TextView items_count) {
// TODO Auto-generated method stub
final Dialog dialog = new Dialog(Currentactivity,
android.R.style.Theme_Light);
dialog.getWindow().setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setContentView(R.layout.cart_number_layout);
dialog.setCanceledOnTouchOutside(false);
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(0));
dialog.getWindow().getAttributes().windowAnimations = R.style.DialogAnimation;
dialog.show();
quantityet = (EditText) dialog.findViewById(R.id.quantityet);
Button one = (Button) dialog.findViewById(R.id.one);
Button star = (Button) dialog.findViewById(R.id.ok);
Button zero = (Button) dialog.findViewById(R.id.zero);
Button delete = (Button) dialog.findViewById(R.id.delete);
star.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
final String value = quantityet.getText().toString();
if (!(quantityet.getText().toString().trim().length() == 0)) {
if (!(value.equalsIgnoreCase("0"))) {
db.open();
Cursor c = db.checkCartExist(productArray.get(position)
.get("title"));
if (c.moveToFirst()) {
ToastUtils.displayToast(ToastTypeEnum.ALERT_TOAST,
"Product already added to cart",
Toast.LENGTH_SHORT);
/*db.updateProductCount(quantityet.getText()
.toString(),productArray.get(position)
.get("title"));*/
} else {
items_count.setVisibility(View.VISIBLE);
items_count.setText(value);
db.insertCartDetails(productArray.get(position)
.get("title"), productArray.get(position)
.get("price"), quantityet.getText()
.toString(), productArray.get(position)
.get("image"));
ToastUtils.displayToast(ToastTypeEnum.ALERT_TOAST,
"Product added to cart",
Toast.LENGTH_SHORT);
}
c.close();
db.close();
dialog.dismiss();
} else {
ToastUtils.displayToast(ToastTypeEnum.ALERT_TOAST,
"Please enter the valid quantity",
Toast.LENGTH_SHORT);
}
} else {
ToastUtils.displayToast(ToastTypeEnum.ALERT_TOAST,
"Please enter the quantity", Toast.LENGTH_SHORT);
}
}
});
zero.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
addOrder(position, 0);
// dialog.dismiss();
}
});
delete.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
// addOrder(position,0);
// dialog.dismiss();
quantityet.setText("");
}
});
return quantityet.getText().toString().trim();
}
private void addOrder(int position, int quantity) {
if (quantityet.getText().toString().length() > 0) {
quantityet.setText(quantityet.getText().toString().trim()
+ String.valueOf(quantity));
} else {
quantityet.setText(String.valueOf(quantity));
}
quantityet.setSelection(quantityet.getText().length());
}
}
感谢。