how to get value from one adapter to another adapter using recyclerview in android? - android-recyclerview

Question

How to get value from one adapter to another adapter when clicking on the favorite button then it shows how many we clicked on favorite image button and also shows all data in another activity. Below is my Adapter Class & ViewHolder class (i.e AdapterFav.java & ContactViewHolder.java)
AdapterFav.java
public class AdapterFav extends
RecyclerView.Adapter<AdapterFav.ContactViewHolder>{
private ArrayList<Contactfav> contactfavList;
private static Context mContext;
public AdapterFav(ArrayList<Contactfav> contactfavList, Context applicationContext) {
this.contactfavList = contactfavList;
this.mContext = applicationContext;
}
#Override
public ContactViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(mContext).inflate(R.layout.contact_row, null);
ContactViewHolder contactViewHolder = new ContactViewHolder(view);
return contactViewHolder;
}
#Override
public void onBindViewHolder(ContactViewHolder holder, int position) {
Contactfav contactfav = (Contactfav) contactfavList.get(position);
holder.tvContactName.setText(contactfav.getContactName());
holder.tvPhoneNumber.setText(contactfav.getContactNumber());
//Log.e("Id is", contactfav.getContactNumber());
holder.ivContactImage.setImageBitmap(contactfav.getContactImage());
holder.id=contactfav.getCid();
}
#Override
public int getItemCount() {
return contactfavList.size();
}
}
ContactViewHolder.java
public static class ContactViewHolder extends RecyclerView.ViewHolder {
ImageView ivContactImage;
ImageButton ibFavBtn;
TextView tvContactName;
TextView tvPhoneNumber;
Contactfav contactfav=new Contactfav();
String id;
public ContactViewHolder(View itemView) {
super(itemView);
ivContactImage = (ImageView) itemView.findViewById(R.id.ivContactImage);
tvContactName = (TextView) itemView.findViewById(R.id.tvContactName);
tvPhoneNumber = (TextView) itemView.findViewById(R.id.tvPhoneNumber);
ibFavBtn = (ImageButton) itemView.findViewById(R.id.fav);
ibFavBtn.setOnClickListener(new View.OnClickListener() {
Boolean b = true;
#Override
public void onClick(View view) {
if (b == true) {
ibFavBtn.setImageResource(R.drawable.star2);
Log.e("From get", id);
b = false;
} else {
ibFavBtn.setImageResource(R.drawable.star);
b = true;
}
}
});
}
}