问题
I would like to use the new View Binding instead of ButterKnife in my RecyclerView Adapter class
?
This is my class
:
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.cardview.widget.CardView;
import androidx.recyclerview.widget.RecyclerView;
import com.gallosalocin.mareu.R;
import com.gallosalocin.mareu.model.Meeting;
import java.util.List;
import butterknife.BindView;
import butterknife.ButterKnife;
public class MeetingRecyclerViewAdapter extends RecyclerView.Adapter<MeetingRecyclerViewAdapter.ViewHolder> {
private List<Meeting> meetingsList;
private OnItemClickListener onItemClickListener;
MeetingRecyclerViewAdapter(List<Meeting> meetings, OnItemClickListener onItemClickListener) {
this.meetingsList = meetings;
this.onItemClickListener = onItemClickListener;
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.cardview_main, parent, false);
return new ViewHolder(view, onItemClickListener);
}
@Override
public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
Meeting meeting = meetingsList.get(position);
String descriptionItems = String.format("%1$s - %2$s - %3$s", meeting.getTopic(), meeting.getTime(), meeting.getRoom());
holder.roomColor.setImageResource(meeting.getRoomColor());
holder.description.setText(descriptionItems);
holder.email.setText(meeting.getEmail());
}
@Override
public int getItemCount() {
return meetingsList.size();
}
public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
@BindView(R.id.iv_cardview_image)
ImageView roomColor;
@BindView(R.id.tv_cardview_description)
TextView description;
@BindView(R.id.tv_cardview_email)
TextView email;
@BindView(R.id.iv_cardview_delete_btn)
ImageView deleteImage;
@BindView(R.id.cardview_meeting)
CardView cardView;
OnItemClickListener onItemClickListener;
ViewHolder(@NonNull View itemView, OnItemClickListener onItemClickListener) {
super(itemView);
ButterKnife.bind(this, itemView);
this.onItemClickListener = onItemClickListener;
deleteImage.setOnClickListener(this);
}
@Override
public void onClick(View view) {
if (view.getId() == R.id.iv_cardview_delete_btn) {
onItemClickListener.onDeleteClick(getAdapterPosition());
}
}
}
public interface OnItemClickListener {
void onDeleteClick(int position);
}
}
I try this but I have this issue.
The_issue
In fact, I would like to remove all the code lines with @BindView
to make the code more readable. Sorry for my english if I make mistakes.
回答1:
Your ViewHolder
expects View
instance to be passed. So, just pass binding.getRoot()
instead of binding
into the constructor, and it will work.
Like this:
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
// get your binding here: itemBinding = ...
// and then:
return new ViewHolder(itemBinding.getRoot(), onItemClickListener);
}
来源:https://stackoverflow.com/questions/60756997/how-can-i-replace-butterknife-with-viewbinding-on-recyclerview-adapter