ListItem 過濾器中的 ImageView 未在 Android 中過濾

Question

我有一個搜索過濾器，它必須根據文本輸入過濾項目。 每個列表項由兩個 TextView 和一個 ImageView 組成。 我已經附加了適配器並且過濾器在兩個文本視圖中工作正常，但相應的 ImageViews 沒有被過濾（圖像的順序沒有改變）。 我嘗試以多種方式更改代碼，但它不起作用。 在這里，我的適配器擴展了 ArrayAdapter。 我也嘗試使用 BaseAdapter，但仍然無法正常工作

我的適配器 class：

import de.hdodenhof.circleimageview.CircleImageView;

public class ChefSearchResultAdapter extends ArrayAdapter<ChefSearchItem> implements Filterable {

    private ArrayList<ChefSearchItem> modelValues;
    private List<ChefSearchItem> mOriginalValues;
    private Context context;

    private static class ViewHolder {
        TextView userName;
        TextView userAdmirers;
        CircleImageView userProfileImage;
    }

    public ChefSearchResultAdapter(Context context, ArrayList<ChefSearchItem> chefs) {
        super(context, 0, chefs);
        modelValues = chefs;
        this.context=context;

    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        // Get the data item for this position
        ChefSearchItem chef = getItem(position);

        // Check if an existing view is being reused, otherwise inflate the view
        final ViewHolder viewHolder; // view lookup cache stored in tag

        if (convertView == null) {
            // If there's no view to re-use, inflate a brand new view for row
            viewHolder = new ViewHolder();
            LayoutInflater inflater = LayoutInflater.from(getContext());
            convertView = inflater.inflate(R.layout.chef_search_listitem, parent, false);
            viewHolder.userName = convertView.findViewById(R.id.user_name);
            viewHolder.userAdmirers = convertView.findViewById(R.id.user_admirers);
            viewHolder.userProfileImage = convertView.findViewById(R.id.profile_image);

            // Cache the viewHolder object inside the fresh view
            convertView.setTag(viewHolder);
        } else {
            // View is being recycled, retrieve the viewHolder object from tag
            viewHolder = (ViewHolder) convertView.getTag();
        }
        final StorageReference storageReference = FirebaseStorage.getInstance().getReference("Users").child(chef.userUID);
        storageReference.child("Profile Pic").getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
            @Override
            public void onSuccess(Uri uri) {
                //Picasso.get().load(uri).into(viewHolder.userProfileImage);
                Picasso.get()
                    .load(uri)
                    .networkPolicy(NetworkPolicy.OFFLINE)
                    .into(viewHolder.userProfileImage, new Callback() {
                        @Override
                        public void onSuccess() {

                        }

                        @Override
                        public void onError(Exception e) {
                            Picasso.get()
                                .load(uri)
                                .into(viewHolder.userProfileImage, new Callback() {
                                    @Override
                                    public void onSuccess() {

                                    }

                                    @Override
                                    public void onError(Exception e) {
                                        Log.v("Picasso","Could not fetch image");
                                    }

                                });
                        }
                    });
            }
        }).addOnFailureListener(new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception exception) {
                // Handle any errors
            }
        });

        // Populate the data from the data object via the viewHolder object
        // into the template view.
        viewHolder.userName.setText(chef.userName);
        viewHolder.userAdmirers.setText(chef.userAdmirers);

        //Set on click to listitem
        LinearLayout listItem = convertView.findViewById(R.id.chef_listitem);
        listItem.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //Navigate user to selected chef profile
                Intent i=new Intent(context,ChefsViewActivity.class);
                i.putExtra("UID",chef.userUID);
                i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                context.startActivity(i);
            }
        });


        // Return the completed view to render on screen
        return convertView;
    }

    @Override
    public Filter getFilter() {

        Filter filter = new Filter() {

            @SuppressWarnings("unchecked")
            @Override
            protected void publishResults(CharSequence constraint, FilterResults results) {

                modelValues.clear();
                modelValues.addAll((ArrayList<ChefSearchItem>) results.values);

                notifyDataSetChanged();
            }

            @Override
            protected FilterResults performFiltering(CharSequence constraint) {

                FilterResults results = new FilterResults();
                // Holds the results of a filtering values

                List<ChefSearchItem> FilteredArrList = new ArrayList<>();

                if (mOriginalValues == null) {
                    mOriginalValues = new ArrayList<>(modelValues); // saves

                }

                /********
                 *
                 * If constraint(CharSequence that is received) is null returns
                 * the mOriginalValues(Original) values else does the Filtering
                 * and returns FilteredArrList(Filtered)
                 *
                 ********/
                if (constraint == null || constraint.length() == 0) {

                    // set the Original result to return
                    results.count = mOriginalValues.size();
                    results.values = mOriginalValues;
                } else {
                    Locale locale = Locale.getDefault();
                    constraint = constraint.toString().toLowerCase(locale);

                    for (int i = 0; i < mOriginalValues.size(); i++) {

                        ChefSearchItem model = mOriginalValues.get(i);

                        String data = model.userName;

                        if (data.toLowerCase(locale).contains(constraint.toString())) {
                            FilteredArrList.add(model);
                        }
                    }
                    // set the Filtered result to return
                    results.count = FilteredArrList.size();
                    results.values = FilteredArrList;
                }
                return results;
            }
        };
        return filter;
    }

}

我的視圖持有者：

public class ChefSearchItem {
    public String userName;
    public String userAdmirers;
    public String userUID;

    public ChefSearchItem(String userName, String userAdmirers, String userUID) {
        this.userName = userName;
        this.userAdmirers = userAdmirers;
        this.userUID = userUID;
    }
}

Answer 1

更簡單的過濾數據的方法是在本地過濾它們

在您提交搜索視圖的活動中，調用此方法並將搜索字符串作為參數傳遞。 制作一個包含過濾數據的臨時列表。

filter(String filter){
 ArrayList<ChefSearchItem> filtereModelValues = new ArrayList<ChefSearchItem>();
 for (ChefSearchItem chefSearchItem : <LIST YOU ARE SENDING TO ADAPTER>){
    if(filter.toLowerCase().equals(chechefSearchItem.userUID.toLowerCase())
       filtereModelValues.add(chefSearchItem );
 }

  //outside the for loop send the filtered list to adapter by creating method inside adapter name "filter" and pass filterList as parameter.
  YOUR_ADAPTER.filter(filtereModelValues);

} 

在你的適配器中

public void filter(ArrayList<ChefSearchItem> filterModelValues){
   modelValues = filterModelValues;
   notifyDataChanged();
}