我总是收到同样的东西

Question

创建的每个项目都是一个具有名称、价格和数量的产品类型的对象。碰巧当我试图在 gridview 中接收每个项目的位置时，我总是得到视图的第一个项目。在 post 解决我的问题之前，我看了其他几个 post ，看起来我做的一切都是正确的，以便如何使用标签。

我有

@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
    if (convertView == null || (convertView.getTag() == null)) {
        convertView = inflater.inflate(R.layout.listview_values, parent, false);
        holder = new ViewHolder();
        holder.productName = (TextView) convertView.findViewById(R.id.textViewList1);
        holder.productQuantity = (EditText) convertView.findViewById(R.id.EditTextList2);
        holder.productPrice = (TextView) convertView.findViewById(R.id.textViewList3);
        holder.removeProduct = (ImageButton) convertView.findViewById(R.id.removeProduct);
    }
    else {
        holder = (ViewHolder) convertView.getTag();
    }
    convertView.setTag(holder);
    holder.productName.setText(products.get(position).getProductName());
    holder.productQuantity.setText(String.valueOf(products.get(position).getProductQuantity()) + " Un.");
    holder.productPrice.setText(String.valueOf(products.get(position).getProductPrice())+ " €");
    holder.removeProduct.setTag(new Integer(position));

    return convertView;
}

和

 public void removeProduct(View v) {

    ImageButton removeProduct = (ImageButton) findViewById(R.id.removeProduct);
    Integer position = (Integer) removeProduct.getTag();

    Product p1 = (Product) adapter.getItem(position);

    Toast toast = Toast.makeText(this,"You want to remove the item: "+ position +" with the product name: "+ p1.getProductName() + " , quantity: "+ p1.getProductQuantity()
            + " , price: " + p1.getProductPrice(),Toast.LENGTH_LONG); toast.show();
}

当我运行模拟器现在不管我点击什么项目我总是得到这个结果：

如果您需要查看更多代码，请告诉我，我会post。提前谢谢你们。

Answer 1

将您的 removeProduct() 更改为 -

public void removeProduct(View v) {    
    Integer position = (Integer) v.getTag();

    Product p1 = (Product) adapter.getItem(position);

    Toast toast = Toast.makeText(this,"You want to remove the item: "+ position +" with the product name: "+ p1.getProductName() + " , quantity: "+ p1.getProductQuantity()
            + " , price: " + p1.getProductPrice(),Toast.LENGTH_LONG); toast.show();
}

原因是您再次通过

初始化您的视图

  ImageButton removeProduct = (ImageButton) findViewById(R.id.removeProduct)

这不再是您点击的那个视图。你点击的view是传入的参数removeProduct()

我总是收到同样的东西

I'm always receiving the same item

tags

android

gridview

baseadapter