Question

我有一个recyclerview，其中显示了单词列表，并且在右侧，每个视图都有书签按钮。一切正常，但是如果已经有加书签的单词并且如果我过滤rycyclerview，则书签的图像不会更改。您可以在以下屏幕截图中看到它们：

在过滤所有内容之前，您可以看到：标记了3个单词

但是当我过滤回收站视图时，实际上在该位置上还标记了另外3个单词

这是我的代码，用于获取书签单词并与其他人进行比较并标记它们是否匹配：

光标c = database.rawQuery（“从书签中选择标题，在标题中输入（从单词中选择标题）”，null）；

    while (c.moveToNext()){
        String title = c.getString(0);

        if (title.equals(holder.wordsName.getText().toString())){
            holder.wordsFav.setImageResource(R.drawable.ic_bookmark_black_24dp);
            holder.wordsFav.setTag("clicked");
        }
         else if (!title.equals(holder.wordsName.getText().toString())){
             holder.wordsFav.setImageResource(R.drawable.ic_bookmark_border_black_24dp);
         }
    }

这是过滤代码：在适配器中：

@Override
    public Filter getFilter() {
        return wordsFilter;
    }

    private Filter wordsFilter = new Filter() {
        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            List<Words> filteredList = new ArrayList<>();

            if (constraint == null || constraint.length() == 0){

                filteredList.addAll(wordsListFull);

            }else {

                String filterPattern = constraint.toString().toLowerCase().trim();

                for (Words words: wordsListFull){
                    if (words.getWord().toLowerCase().contains(filterPattern)){
                        filteredList.add(words);
                    }
                }

            }

            FilterResults results = new FilterResults();
            results.values = filteredList;

            return results;

        }

        @Override
        protected void publishResults(CharSequence constraint, FilterResults results) {
            wordsList = new ArrayList<Words>();
            wordsList.clear();
            if (wordsList != null){
                wordsList.addAll((List) results.values);
            }
            notifyDataSetChanged();
        }
    };

并且在片段中：

searchWords.addTextChangedListener(new TextWatcher() {
            @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) {
                    clearTextBtn.setVisibility(View.VISIBLE);
                    clearTextBtn.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            searchWords.setText("");
                            clearTextBtn.setVisibility(View.GONE);
                            mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);
                        }
                    });
                } else {
                    clearTextBtn.setVisibility(View.GONE);
                }

                wordsAdapter.getFilter().filter(s.toString());
            }

            @Override
            public void afterTextChanged(Editable s) {

            }
        });

Answer 1

如果该特定标题不在书签中，请尝试将图像重置为灰色。

Cursor c = database.rawQuery("SELECT title FROM bookmark WHERE title IN (SELECT title FROM words)", null);

        while (c.moveToNext()){
            String title = c.getString(0);

            if (title.equals(holder.wordsName.getText().toString())){
                holder.wordsFav.setImageResource(R.drawable.ic_bookmark_black_24dp);
                holder.wordsFav.setTag("clicked");
            }else{
             holder.wordsFav.setImageResource(R.drawable.default_image);
            }
        }

过滤了recyclerview时，recyclerview中的图像未更改

1 个答案: