Hello.
I recently began to learn java .. Now I create a dictionary for android, but I have a problem with the search function (this code is not mine)
searchBox.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) { System.out.println("Alphabet " + s.toString()); mAdapter.getFilter().filter(s.toString()); System.out.println("Alphabet Count " + mAdapter.mValues.size()); } @Override public void afterTextChanged(Editable s) { } }); The application does not look for the letter "e" when I write "e".
Please, help. I want the application to not so strictly search for words.
Here is the whole code
public class ItemListActivity extends AppCompatActivity { /** * Whether or not the activity is in two-pane mode, ie running on a tablet * device. */ private boolean mTwoPane; // List of all dictionary words private List<QuizObject> dictionaryWords; private List<QuizObject> filteredList; // RecycleView adapter object private SimpleItemRecyclerViewAdapter mAdapter; // Search edit box private EditText searchBox; // Database object private DbBackend dbBackend; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_item_list); Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); toolbar.setTitle(getTitle()); // Google Analytic tracking code. Tracker t = ((AnalyticsApplication) getApplication()).getTracker(AnalyticsApplication.TrackerName.APP_TRACKER); t.setScreenName(this.getClass().getSimpleName()); t.send(new HitBuilders.ScreenViewBuilder().build()); // Instantiate database object and call return dictionary method dbBackend = new DbBackend(ItemListActivity.this); dictionaryWords = dbBackend.dictionaryWords(); filteredList = new ArrayList<QuizObject>(); filteredList.addAll(dictionaryWords); searchBox = (EditText)findViewById(R.id.search_box); RecyclerView recyclerView = (RecyclerView)findViewById(R.id.item_list); recyclerView.addItemDecoration(new SimpleDividerItemDecoration(this)); assert recyclerView != null; mAdapter = new SimpleItemRecyclerViewAdapter(filteredList); recyclerView.setAdapter(mAdapter); // search suggestions using the edittext widget searchBox.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) { System.out.println("Alphabet " + s.toString()); mAdapter.getFilter().filter(s.toString()); System.out.println("Alphabet Count " + mAdapter.mValues.size()); } @Override public void afterTextChanged(Editable s) { } }); if (findViewById(R.id.item_detail_container) != null) { // The detail container view will be present only in the // large-screen layouts (res/values-w900dp). // If this view is present, then the // activity should be in two-pane mode. mTwoPane = true; } } // create a custom RecycleViewAdapter class public class SimpleItemRecyclerViewAdapter extends RecyclerView.Adapter<SimpleItemRecyclerViewAdapter.ViewHolder> implements Filterable { private List<QuizObject> mValues; private CustomFilter mFilter; public SimpleItemRecyclerViewAdapter(List<QuizObject> items) { mValues = items; mFilter = new CustomFilter(SimpleItemRecyclerViewAdapter.this); } @Override public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_list_content, parent, false); return new ViewHolder(view); } @Override public void onBindViewHolder(final ViewHolder holder, int position) { holder.mItem = mValues.get(position); holder.mIdView.setText(String.valueOf(mValues.get(position).getId())); holder.mIdView.setVisibility(View.GONE); holder.mContentView.setText(mValues.get(position).getWord()); final String valueOfId = String.valueOf(holder.mItem.getId()); holder.mView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (mTwoPane) { Bundle arguments = new Bundle(); arguments.putString(ItemDetailFragment.ARG_ITEM_ID, valueOfId); ItemDetailFragment fragment = new ItemDetailFragment(); fragment.setArguments(arguments); getSupportFragmentManager().beginTransaction().replace(R.id.item_detail_container, fragment).commit(); } else { Context context = v.getContext(); Intent intent = new Intent(context, ItemDetailActivity.class); intent.putExtra(ItemDetailFragment.ARG_ITEM_ID, valueOfId); context.startActivity(intent); } } }); } @Override public int getItemCount() { return mValues.size(); } @Override public Filter getFilter() { return mFilter; } public class ViewHolder extends RecyclerView.ViewHolder { public final View mView; public final TextView mIdView; public final TextView mContentView; public QuizObject mItem; public ViewHolder(View view) { super(view); mView = view; mIdView = (TextView) view.findViewById(R.id.id); mContentView = (TextView) view.findViewById(R.id.content); } @Override public String toString() { return super.toString() + " '" + mContentView.getText() + "'"; } } public class CustomFilter extends Filter { private SimpleItemRecyclerViewAdapter mAdapter; private CustomFilter(SimpleItemRecyclerViewAdapter mAdapter) { super(); this.mAdapter = mAdapter; } @Override protected FilterResults performFiltering(CharSequence constraint) { filteredList.clear(); final FilterResults results = new FilterResults(); if (constraint.length() == 0) { filteredList.addAll(dictionaryWords); } else { final String filterPattern = constraint.toString().toLowerCase().trim(); for (final QuizObject mWords : dictionaryWords) { if (mWords.getWord().toLowerCase().startsWith(filterPattern)) { filteredList.add(mWords); } } } System.out.println("Count Number " + filteredList.size()); results.values = filteredList; results.count = filteredList.size(); return results; } @Override protected void publishResults(CharSequence constraint, FilterResults results) { /*filteredList.clear(); filteredList.addAll((List<QuizObject>) results.values);*/ System.out.println("Count Number 2 " + ((List<QuizObject>) results.values).size()); this.mAdapter.notifyDataSetChanged(); } } } }` 
