how do I highlight the searched text using android search view Widget? - highlight

Question

My search view is working properly but I am trying to do a search such that all the "visible" search letters should be highlighted. I used the filter interface in my adapter for filtering data.
here is my adapter Class
public class myAdapter extends RecyclerView.Adapter<myAdapter.viewHolder> implements Filterable {
private List<Model> model;
// for search filtering
private ArrayList<Model> modelFull;
Context context;
public myAdapter(ArrayList<Model> model, Context context) {
this.model = model;
modelFull =new ArrayList<>(model);
this.context = context;
}
#NonNull
#Override
public viewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.template, parent, false);
return new viewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull viewHolder holder, int position) {
Model forPosition = model.get(position);
holder.image.setImageResource(forPosition.getImage());
holder.intro.setText(forPosition.getIntro());
}
#Override
public int getItemCount() {
return model.size();
}
public class viewHolder extends RecyclerView.ViewHolder {
TextView intro;
ImageView image;
public viewHolder(#NonNull View itemView) {
super(itemView);
intro= itemView.findViewById(R.id.introTxt);
image = itemView.findViewById(R.id.image);
}
}
#Override
public Filter getFilter() {
return generalFilter;
}
private Filter generalFilter =new Filter() {
#Override
protected FilterResults performFiltering(CharSequence constraint) {
List<Model> filteredModel =new ArrayList<>();
if(constraint ==null || constraint.length()==0) {
filteredModel.addAll(modelFull);
}
else {
String searchQuery= constraint.toString().toLowerCase().trim();
for(blogBigModel item : modelFull){
if(item.getBlogIntro().toLowerCase().contains(searchQuery)){
filteredModel.add(item);
}
}
}
FilterResults results =new FilterResults();
results.values = filteredModel;
return results;
}
#Override
protected void publishResults(CharSequence constraint, FilterResults results) {
model.clear();
model.addAll((List)results.values);
notifyDataSetChanged();
}
};
}
that's my class / Fragment where i used the above adapter
[what should i add to get the desired highlighted query when i search in the search bar like Whatsapp][1]
[1]: https://i.stack.imgur.com/Fdu2r.jpg
toolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
#Override
public boolean onMenuItemClick(MenuItem item) {
switch (item.getItemId()) {
case R.id.ic_home_search:enter code here
SearchView searchView = (SearchView) item.getActionView();
searchView.setQueryHint("Search....");
searchView.setImeOptions(EditorInfo.IME_ACTION_DONE);
searchView.setBackground(getResources().getDrawable(R.drawable.searchview_bg));
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
return false;
}
#Override
public boolean onQueryTextChange(String newText) {
adapter.getFilter().filter(newText);
return false;
}
});
}
}
return true;
});