【发布时间】：2017-03-11 08:33:28
【问题描述】：
我有一个问题，当我点击增加第一个项目的位置数量时，当我向下和向上滑动时，该项目的位置闪烁......
请帮帮我提前谢谢
这是我的适配器类。
package growcia.malacus.com.growcia.adapter;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.Typeface;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.squareup.picasso.Picasso;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.List;
import growcia.malacus.com.growcia.R;
import growcia.malacus.com.growcia.activity.ProductListActivity;
import growcia.malacus.com.growcia.database.SqliteDatabaseClass;
import growcia.malacus.com.growcia.model.SellerProductPOJO;
public class ProductListAdapter extends RecyclerView.Adapter<ProductListAdapter.ViewHolder> {
public Context context;
SqliteDatabaseClass DB;
String productCode;
boolean isPressed = false;
int count = 0;
int qty;
public String pname, price, img_path;
static int productItem = 0;
int totPrice;
ProductListActivity objProductList;
List<SellerProductPOJO> productListDetails;
public ProductListAdapter(List<SellerProductPOJO> productDetails, Context context) {
super();
DB = new SqliteDatabaseClass(context);
objProductList = new ProductListActivity();
this.productListDetails = productDetails;
this.context = context;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_product, parent, false);
ViewHolder viewHolder = new ViewHolder(v);
return viewHolder;
}
@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
final SellerProductPOJO objSellerProductPOJO = productListDetails.get(position);
try {
JSONArray jar = DB.getAllProductCodeAndQtyProductList();
Log.e("total pid and qty ad : ", "" + jar.toString());
for (int i = 0; i < jar.length(); i++) {
JSONObject job = jar.getJSONObject(i);
String cart_productId = job.getString("ProductCode");
String productQty = job.getString("QuantityOrdered");
Log.e("id and qty: ", cart_productId + " qty: " + productQty);
String plist_prod_id = productListDetails.get(position).getProductCode();
Log.e("product id in cart : ", "" + cart_productId.toString());
Log.e("product id service : ", "" + plist_prod_id.toString());
}
} catch (JSONException J) {
J.printStackTrace();
}
String url = objSellerProductPOJO.getImagePath();
Picasso.with(context)
.load(url)
.placeholder(R.drawable.placeholder) // optional
.error(R.drawable.error) // optional
.resize(100, 100) // optional
.into(holder.ivProduct);
holder.tvProductName.setText(objSellerProductPOJO.getProductName());
holder.tvUnit.setText(objSellerProductPOJO.getAvailableQuantity());
holder.tvPrice.setText(objSellerProductPOJO.getPrice());
Typeface font = Typeface.createFromAsset(context.getAssets(), "fonts/abc.ttf");
holder.tvProductName.setTypeface(font);
holder.tvUnit.setTypeface(font);
holder.tvPrice.setTypeface(font);
if (context instanceof ProductListActivity)
totPrice = DB.getSumPrice();
Log.e("all price insert : ", "" + totPrice);
count = DB.getProfilesCount();
Log.e("count from db", "" + count);
((ProductListActivity) context).showCartItem(count, totPrice);
holder.btnPlus.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
SellerProductPOJO objSellerProduct = productListDetails.get(position);
String stock = holder.tvUnit.getText().toString();
int qtyMiddle = Integer.parseInt(holder.tvQty.getText().toString());
int qtyStock = Integer.parseInt(objSellerProduct.getAvailableQuantity().toString());
if (!stock.equalsIgnoreCase("0")) {
if (qtyMiddle < qtyStock) {
pname = objSellerProduct.getProductName();
img_path = objSellerProduct.getImagePath();
price = objSellerProduct.getPrice();
productCode = objSellerProduct.getProductCode();
String str_qty = holder.tvQty.getText().toString();
int qty = Integer.parseInt(str_qty);
qty = qty + 1;
String final_str_qty = "" + qty;
objSellerProductPOJO.setQty(final_str_qty);
holder.tvQty.setText(objSellerProductPOJO.getQty() + "");
int reduceable_stock = qtyStock - qty;
holder.tvUnit.setText(reduceable_stock + "");
if (qty > 0) {
boolean entryStatus = DB.Exists(productCode);
if (entryStatus) {
productItem = productItem + 1;
String str_newQty = holder.tvQty.getText().toString();
int newqty = Integer.parseInt(str_newQty);
double intPrice = Double.parseDouble(price);
double totPrice = qty * intPrice;
DB.updateProductQty(productCode, newqty, totPrice);
totPrice = DB.getSumPrice();
Log.e("all price update: ", "" + totPrice);
} else {
productItem = 1;
DB.addProductItem(productCode, pname, img_path, productItem, price, price);
}
if (context instanceof ProductListActivity)
totPrice = DB.getSumPrice();
Log.e("all price insert : ", "" + totPrice);
count = DB.getProfilesCount();
Log.e("count from db", "" + count);
((ProductListActivity) context).showCartItem(count, totPrice);
}
} else {
Toast.makeText(context, "Product out of stock!!", Toast.LENGTH_SHORT).show();
}
}
}
});
holder.btnMinus.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String stock = holder.tvUnit.getText().toString();
if (!stock.equalsIgnoreCase("0")) {
SellerProductPOJO objSellerProductDeduct = productListDetails.get(position);
String str_qty = holder.tvQty.getText().toString();
int qty = Integer.parseInt(str_qty);
if (qty != 0) {
int qtyStockMinusClick = Integer.parseInt(holder.tvUnit.getText().toString());
holder.tvUnit.setText((qtyStockMinusClick + 1) + "");
Log.e("btnMinus", "" + qty);
if (qty == 1) {
Log.e("", "inside 0 qty");
DB.delete_byID(productCode);
qty = qty - 1;
String final_str_qty = "" + qty;
objSellerProductPOJO.setQty(final_str_qty);
holder.tvQty.setText(objSellerProductPOJO.getQty()+"");
} else {
qty = qty - 1;
String final_str_qty = "" + qty;
objSellerProductPOJO.setQty(final_str_qty);
holder.tvQty.setText(objSellerProductPOJO.getQty()+"");
double intPrice = Double.parseDouble(price);
double totPrice = qty * intPrice;
DB.updateProductQty(productCode, qty, totPrice);
}
if (context instanceof ProductListActivity)
totPrice = DB.getSumPrice();
Log.e("all price insert : ", "" + totPrice);
count = DB.getProfilesCount();
Log.e("count from db", "" + count);
((ProductListActivity) context).showCartItem(count, totPrice);
}
} else {
Toast.makeText(context, "Product out of stock!!", Toast.LENGTH_SHORT).show();
}
notifyDataSetChanged();
}
});
holder.imagefavorite.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.e("position", "all position" + position);
if (isPressed)
holder.imagefavorite.setBackgroundResource(R.drawable.ic_not_favourite);
else
holder.imagefavorite.setBackgroundResource(R.drawable.favourite_icon);
isPressed = !isPressed;
}
});
}
@Override
public int getItemViewType(int position) {
return super.getItemViewType(position);
}
@Override
public int getItemCount() {
return productListDetails.size();
}
class ViewHolder extends RecyclerView.ViewHolder {
public TextView tvProductName;
public TextView tvUnit;
public TextView tvPrice;
public TextView tvQty;
public ImageView ivProduct;
public ImageView imagefavorite;
// public EditText edqntiry;
public Button btnPlus;
public Button btnMinus;
public ViewHolder(View itemView) {
super(itemView);
ivProduct = (ImageView) itemView.findViewById(R.id.ivProduct);
tvProductName = (TextView) itemView.findViewById(R.id.tvProductName);
tvUnit = (TextView) itemView.findViewById(R.id.tvUnit);
tvPrice = (TextView) itemView.findViewById(R.id.tvPrice);
tvQty = (TextView) itemView.findViewById(R.id.tvQty);
btnPlus = (Button) itemView.findViewById(R.id.btnPlus);
btnMinus = (Button) itemView.findViewById(R.id.btnMinus);
imagefavorite = (ImageView) itemView.findViewById(R.id.imagefavorite);
}
}
}
当我要增加数量时，屏幕下方会显示
当我向下和向上滚动时，屏幕下方会显示
【问题讨论】：
-
你是什么意思那个项目的位置在晃动？
-
看上面两张图...
-
第一张图片在滚动之前，下一张是在滚动之后
-
这是一个简单的例子，
RecyclerView重用了它创建的Views (ScrappedViews)。因此，只需将您的数据重新绑定到holder.tvQty即可解决问题。正如@user6709464 所建议的那样。我还鼓励您不要在onBindView()中添加/创建新侦听器（每次滚动到新视图时都会创建一个新实例）。将它们放在 ViewHolder 中。 -
我已经更新了同样的..
标签： android android-studio android-fragments android-recyclerview