如何解决recyclerview 中的 Searchview 复制了数据
在操作栏中实现了搜索视图，搜索工作正常，但例如， 如果用户搜索两个字符 pa，我的列表包含与 pa 相关的 2 个数据，即 pack1,pack2 然后数据加载到回收站视图中。现在，如果用户输入另一个字符 l，到前面的字符 pa，现在我的搜索视图有 pal ，但数组列表与搜索不匹配，列表不匹配' t 包含任何带有 pal 的项目。即，现在回收站视图是空的。现在，如果我清除字符 l，列表会重新加载数据包 1、包 2，但结果加载 2 次，即，不是在 recyclerview 中显示 2 个项目，而是总共显示 4 个项目。 当搜索被清除时，它正在复制项目。
搜索视图
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_order,menu);
searchView = (SearchView) menu.findItem(R.id.action_search).getActionView();
searchView.setImeOptions(EditorInfo.IME_ACTION_DONE);
searchView.setMaxWidth(Integer.MAX_VALUE);
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String query) {
mOrderAdapter.getFilter().filter(query);
searchView.clearFocus();
return true;
}
@Override
public boolean onQueryTextChange(String newText) {
if(newText.length()==0){
getData();
searchView.clearFocus();
}
mOrderAdapter.getFilter().filter(newText);
return true ;
}
});
return true;
}
过滤代码
@Override
public Filter getFilter() {
return new Filter() {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
String charString = constraint.toString();
if (charString.isEmpty()||charString.length()==0) {
mListFilter = mOrderArrayList;
} else {
List<Order> filteredList = new ArrayList<>();
ArrayList<Order> templist=new ArrayList<Order>();
for (Order ord : mOrderArrayList) {
if (ord.getOs_OrderNo().toLowerCase().contains(charString.toLowerCase())
|| ord.getItemName().toLowerCase().contains(charString.toLowerCase())) {
filteredList.add(ord);
templist.addAll(mListFilter);
}
}
mOrderArrayList.removeAll(templist);
mOrderArrayList.addAll(filteredList);
mListFilter = filteredList;
}
FilterResults filterResults = new FilterResults();
filterResults.values = mListFilter;
return filterResults;
}
@Override
protected void publishResults(CharSequence constraint,FilterResults results) {
mListFilter = (ArrayList<Order>) results.values;
notifyDataSetChanged();
}
};
}
非常感谢任何帮助。
适配器代码
public class OrderAdapter extends RecyclerView.Adapter<OrderAdapter.MyViewHolder> implements Filterable {
private Context mContext;
private List<Order> mListFilter,mOrderArrayList;
private SharedPreferences sharedPreferences;
private Resources r;
public OrderAdapter(Context context,ArrayList<Order> orderList) {
mContext = context;
mListFilter = orderList;
mOrderArrayList = orderList;
sharedPreferences = PreferenceManager.getDefaultSharedPreferences(mContext);
r = context.getResources();
}
class MyViewHolder extends RecyclerView.ViewHolder {
private TextView orderNoView,itemNameView,qtyView,statusView,companyNameView;
private Order currentItem;
MyViewHolder(View view) {
super(view);
orderNoView = view.findViewById(R.id.orderNo);
itemNameView = view.findViewById(R.id.item);
qtyView = view.findViewById(R.id.qty);
statusView = view.findViewById(R.id.status);
companyNameView = view.findViewById(R.id.company);
}
void bind (Order om) { //<--bind method allows the ViewHolder to bind to the data it is displaying
orderNoView.setText(om.getOs_OrderNo());
itemNameView.setText(String.valueOf(om.getItemName()));
qtyView.setText("Qty - " + String.valueOf(om.getOs_Qty()));
statusView.setText(om.getStatusName());
if (sharedPreferences.getString(r.getString(R.string.key_CompanyInUser),"").equals("0")){
companyNameView.setVisibility(View.GONE);
} else {
companyNameView.setText(om.getCustomerName());
}
currentItem = om; //<-- keep a reference to the current item
}
}
@NonNull
@Override
public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent,int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.adapter_order,parent,false);
return new MyViewHolder(itemView);
}
@Override
public void onBindViewHolder(@NonNull MyViewHolder holder,int position) {
Order item = mListFilter.get(position);
holder.bind(item);
}
@Override
public int getItemCount() {
return mListFilter.size();
}
@Override
public int getItemViewType(int position){
return position;
}
@Override
public Filter getFilter() {
return new Filter() {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
String charString = constraint.toString();
List<Order> filteredList = new ArrayList<>();
if (charString.isEmpty()||charString.length()==0) {
filteredList.addAll(mOrderArrayList);
} else {
for (Order ord : mOrderArrayList) {
if (ord.getOs_OrderNo().toLowerCase().contains(charString.toLowerCase())
|| ord.getItemName().toLowerCase().contains(charString.toLowerCase())) {
filteredList.add(ord);
}
}
}
FilterResults filterResults = new FilterResults();
filterResults.values = filteredList;
return filterResults;
}
@Override
protected void publishResults(CharSequence constraint,FilterResults results) {
mListFilter = (ArrayList<Order>) results.values;
notifyDataSetChanged();
}
};
}
}
点击监听器代码
brandView.addOnItemTouchListener(new RecyclerTouchListener(getApplicationContext(),brandView,new RecyclerTouchListener.ClickListener() {
@Override
public void onClick(View view,int position) {
isRefreshData = true;
startActivity(new Intent(mContext,ViewOrderDetails.class).putExtra("Key-Intent-OrderNo",mOrderArrayList.get(position).getOs_OrderNo()).putExtra("Key-Intent-BrandName",mOrderArrayList.get(position).getos_BrandName()));
}
@Override
public void onLongClick(View view,int position) {
}
}));
解决方法
这是因为您在 addAll 的循环内使用 #performFiltering 。另外为什么你有两个本地列表进行过滤？检查下面的方法应该可以工作。我已经删除了导致问题的额外代码和代码。
@Override
public Filter getFilter() {
return new Filter() {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
String charString = constraint.toString();
List<Order> filteredList = new ArrayList<>();
if (charString.isEmpty()||charString.length()==0) {
filteredList.addAll(mOrderArrayList);
} else {
for (Order ord : mOrderArrayList) {
if (ord.getOs_OrderNo().toLowerCase().contains(charString.toLowerCase())
|| ord.getItemName().toLowerCase().contains(charString.toLowerCase())) {
filteredList.add(ord);
}
}
}
FilterResults filterResults = new FilterResults();
filterResults.values = filteredList;
return filterResults;
}
@Override
protected void publishResults(CharSequence constraint,FilterResults results) {
mListFilter = (ArrayList<Order>) results.values;
notifyDataSetChanged();
}
};
}
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