public class MucUserViewBinder implements AutoCompleteViewBinder<MucOptions.User> {

  public static final String TAG = MucUserViewBinder.class.getSimpleName();

  @Override

  public long getItemId(@NonNull @NotNull MucOptions.User user) {

    try{

      if(user!=null) {

        return user.userId;  // ei line e crash kore :/

      }

    }catch (Exception x) {

      Timber.tag(TAG).e("Exception "+x.getMessage());

    }

​

​

    return 0;

  }

​

  @Override

  public int getItemLayoutId() {

    return R.layout.simple_autocomplete_row;

  }

​

  @NonNull

  @NotNull

  @Override

  public AutoCompleteViewHolder getViewHolder(@NonNull @NotNull View view) {

    return new MucUserViewHolder(view);

  }

​

  @Override

  public void bindData(@NonNull @NotNull AutoCompleteViewHolder viewHolder, @NonNull @NotNull MucOptions.User user,

                       @Nullable @org.jetbrains.annotations.Nullable CharSequence constraint) {

    MucUserViewHolder itemViewHolder = (MucUserViewHolder) viewHolder;

    itemViewHolder.textView.setText(user.getComparableName());

    String smallAvatar = user.image + "_sm.png";

    Timber.tag(TAG).e("user.image = "+smallAvatar);

    Picasso.get().load(smallAvatar)

        .placeholder(ContextCompat.getDrawable(itemViewHolder.rootView.getContext(),

            R.drawable.ic_avatar_placeholder)).into(itemViewHolder.avatar);

  }

​

  static class MucUserViewHolder extends AutoCompleteViewHolder {

    public final TextView textView;

    public final CircleImageView avatar;

    public final View rootView;

​

    protected MucUserViewHolder(@NonNull @NotNull View view) {

      super(view);

      this.rootView = view;

      this.textView = view.findViewById(R.id.textView);

      this.avatar = view.findViewById(R.id.avatar);

    }

  }

}

import androidx.annotation.NonNull;

import ridmik.one.entities.MucOptions;

import ridmik.one.ui.components.autocomplete.filter.HandleTokenFilter;

​

public class MucUserTokenFilter extends HandleTokenFilter<MucOptions.User> {

​

  public MucUserTokenFilter() {

    this('@');

  }

  public MucUserTokenFilter(char handleChar) {

    super(handleChar);

  }

​

  @Override

  protected boolean matchesConstraint(@NonNull MucOptions.User user, @NonNull CharSequence constraint) {

    return user.getComparableName().toLowerCase().contains(constraint.toString().toLowerCase());

  }

​

  @Override

  public @NonNull CharSequence toTokenString(@NonNull MucOptions.User user) {

    return handleChar +user.getComparableName(); // Add handler at the begining! this is the trick!

  }

}

private MultiAutoComplete multiAutoComplete = null; // A field in your Activity / Fragment class, initialize it to null.

​

void initAutoSuggestions() {

ArrayList<MucOptions.User> someList = getUsers(); // <--- suggestions dataset depending on your code.

        AutoCompleteTypeAdapter<MucOptions.User> nameTypeAdapter =

            AutoCompleteTypeAdapter.Build.from(new MucUserViewBinder(), new MucUserTokenFilter());

​

​

        nameTypeAdapter.setItems(someList);

​

        this.multiAutoComplete = new MultiAutoComplete.Builder()

            .tokenizer(new PrefixTokenizer('@'))

            .addTypeAdapter(nameTypeAdapter)

            // .delayer(constraint -> { return 10; }) // eta ki bujhi ni

            .build();

        this.multiAutoComplete.onViewAttached(binding.textinput); // binding.textinput is your multiAutoCompleteView 

}

@Override

    public void onDestroy() {

        super.onDestroy();

          if(multiAutoComplete!=null) {

            this.multiAutoComplete.onViewDetached(); // needed for @mention that thing

        }

}