© habe ein Problem mit dem RecyclerView-Filter. Ich benutze Editiertext für Text-Change-Methode für Filtertextabfrage in Recyclerview, aber wenn ich meine Produktliste Filter ändert.Android-Liste (RecyclerView-Adapter) ändert sich, wenn sich Edittext On Text ändert
Hinweis: all das in Fragment und Fragment in Viewpager.
Mein Problem ist das: Wenn ich etwas schreibe, funktioniert es, aber gleichzeitig ändern sich die Elemente meiner Produktliste zum Ergebnis des Filters.
So in Beispiel zunächst MyList Hat 40 Artikel FilteredDataList leer Nachdem ich "a" in EditText schreiben danach FilteredDataList hat 30 Artikel aber MyList hat die gleichen 30 Produkte. Aber ich habe nichts gesetzt
zu myListMeine Datenliste, bekomme ich es von SQLite
productList = new ArrayList<>();
productList = handler.getAllProduct();
Meine Filtermethode
private List<Product> filter(List<Product> models, String query) {
query = query.toLowerCase();
List<Product> filteredModelList = new ArrayList<>();
filteredModelList.clear();
for (Product model : models) {
final String text = model.get_ProductName().toLowerCase();
if (text.contains(query)) {
filteredModelList.add(model);
}
}
return filteredModelList;
}
Mein EditText OnChange Metod
searchEdt.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable s) {
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start,
int before, int count) {
if (s.length() != 0) {
List<Product> filteredModelList = filter(productList, s.toString());
rcAdapter.animateTo(filteredModelList);
pager_recycler_view.scrollToPosition(0);
} else {
rcAdapter.animateTo(productList);
pager_recycler_view.scrollToPosition(0);
}
}
});
Mein AdapterClass
public class ProductRecyclerViewAdapter extends RecyclerView.Adapter<ProductRecyclerViewHolder> {
private List<Product> itemList;
private Context context;
public ProductRecyclerViewAdapter(Context context, List<Product> itemList) {
this.itemList = itemList;
this.context = context;
}
@Override
public ProductRecyclerViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View layoutView = LayoutInflater.from(parent.getContext()).inflate(R.layout.product_card_single_item, null);
ProductRecyclerViewHolder rcv = new ProductRecyclerViewHolder(layoutView);
return rcv;
}
@Override
public void onBindViewHolder(ProductRecyclerViewHolder holder, int position) {
holder.productName.setText(itemList.get(position).get_ProductName());
holder.productWatCode.setText("%" +itemList.get(position).get_ProductWatCode());
holder.productPOR.setText("%" +itemList.get(position).get_ProductPOR());
holder.productRSP.setText("£" +itemList.get(position).get_ProductRSP());
holder.productDescription.setText(itemList.get(position).get_ProductDescription());
holder.productSKU.setText(itemList.get(position).get_ProductSKU());
holder.productPrice.setText("£" + itemList.get(position).get_ProductPrice());
// holder.productCountCart.setText("");
Picasso.with(context)
.load("http://firmabayi.com/images/ilanK/" +itemList.get(position).get_ProductPhoto())
.placeholder(R.drawable.add_icon)
.error(R.drawable.minus_icon)
.into(holder.productPhoto);
// holder.countryPhoto.setImageResource(itemList.get(position).get_ProductName());
}
@Override
public int getItemCount() {
return this.itemList.size();
}
public void animateTo(List<Product> itemList) {
applyAndAnimateRemovals(itemList);
applyAndAnimateAdditions(itemList);
applyAndAnimateMovedItems(itemList);
}
private void applyAndAnimateRemovals(List<Product> newModels) {
for (int i = itemList.size() - 1; i >= 0; i--) {
final Product model = itemList.get(i);
if (!newModels.contains(model)) {
removeItem(i);
}
}
}
private void applyAndAnimateAdditions(List<Product> newModels) {
for (int i = 0, count = newModels.size(); i < count; i++) {
final Product model = newModels.get(i);
if (!itemList.contains(model)) {
addItem(i, model);
}
}
}
private void applyAndAnimateMovedItems(List<Product> newModels) {
for (int toPosition = newModels.size() - 1; toPosition >= 0; toPosition--) {
final Product model = newModels.get(toPosition);
final int fromPosition = itemList.indexOf(model);
if (fromPosition >= 0 && fromPosition != toPosition) {
moveItem(fromPosition, toPosition);
}
}
}
public Product removeItem(int position) {
final Product model = itemList.remove(position);
notifyItemRemoved(position);
return model;
}
public void addItem(int position, Product model) {
itemList.add(position, model);
notifyItemInserted(position);
}
public void moveItem(int fromPosition, int toPosition) {
final Product model = itemList.remove(fromPosition);
itemList.add(toPosition, model);
notifyItemMoved(fromPosition, toPosition);
}
}
könnten Sie bitte auch Ihren Adaptercode posten? – arsent
Ich habe Adapterklasse hinzugefügt. – user3412648