Firebase UI RecyclerView onClick

问题:

I am using Firebase UI FirebaseRecyclerAdapter to populate a RecyclerView. I managed to get click events from components of my item view (the title), but not for anywhere in the item view, which is what I need. I followed google sample.

In my Activity:

private void setRecyclerView() {     recyclerView = (RecyclerView) findViewById(R.id.recycler_view_gigs);     recyclerView.setHasFixedSize(true);     recyclerView.setLayoutManager(new LinearLayoutManager(this));     mAdapter = new FirebaseRecyclerAdapter<Gig, GigViewHolder>(Gig.class,             R.layout.list_item_card,             GigViewHolder.class,             reference) {         @Override         protected void populateViewHolder(final GigViewHolder viewGig, Gig model, final int position) {              viewGig.itemView.setOnClickListener(new View.OnClickListener() {                 @Override                 public void onClick(View v) {                     Log.i(Utils.TAG, "onItemClickGeneral: position " + position);                     // this doesn't work                 }             });             viewGig.bindToGig(model, new View.OnClickListener() {                 @Override                 public void onClick(View v) {                     Log.i(Utils.TAG, "onItemClickTitle: position " + position);                     // this works                 }             });         }     };     recyclerView.setAdapter(mAdapter); } 

and my ViewHolderClass:

public class GigViewHolder extends RecyclerView.ViewHolder {  ImageView ivIconArtist; TextView tvArtist; TextView tvVenue; TextView tvDate;  public GigViewHolder(View view) {     super(view);     ivIconArtist = (ImageView) view.findViewById(R.id.iv_list_item_icon_artist);     tvArtist = (TextView) view.findViewById(R.id.tv_list_item_artist);     tvVenue = (TextView) view.findViewById(R.id.tv_list_item_venue);     tvDate = (TextView) view.findViewById(R.id.tv_list_item_date); }  public void bindToGig(Gig gig, View.OnClickListener clickListener) {     tvArtist.setText(gig.getArtist());     tvVenue.setText(gig.getVenue());     tvDate.setText(gig.getDate());      tvArtist.setOnClickListener(clickListener); } 

}

I tried the custom onclicklistener + interface suggested in other answers, no luck either.

回答1:

Implementing click and long click listener for entire row / items in FirebaseRecyclerViewAdapter.

I did this in this way.

First, define an interface in your ViewHolder class to send callbacks. Inside its constructor, you can set click/long-click listener for entire row or a single componnent.
Then override onCreateViewHolder of FirebaseRecyclerAdapter where you will implement this interface.

IMPLEMENTATION

My FirebaseViewHolder class.

public class FirebaseViewHolder extends RecyclerView.ViewHolder {      public ImageView mImageView;     public TextView mPostTitle;     public TextView mPostDesc;      public FirebaseViewHolder(View itemView) {         super(itemView);          mImageView = (ImageView) itemView.findViewById(R.id.image_recyclerview);         mPostTitle = (TextView) itemView.findViewById(R.id.tv_title_recyclerview_item);         mPostDesc = (TextView) itemView.findViewById(R.id.tv_desc_recyclerview_item);          //listener set on ENTIRE ROW, you may set on individual components within a row.         itemView.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View v) {                 mClickListener.onItemClick(v, getAdapterPosition());              }         });         itemView.setOnLongClickListener(new View.OnLongClickListener() {             @Override             public boolean onLongClick(View v) {                 mClickListener.onItemLongClick(v, getAdapterPosition());                 return true;             }         });      }     private FirebaseViewHolder.ClickListener mClickListener;      //Interface to send callbacks...     public interface ClickListener{         public void onItemClick(View view, int position);         public void onItemLongClick(View view, int position);     }      public void setOnClickListener(FirebaseViewHolder.ClickListener clickListener){         mClickListener = clickListener;     } } 

Creating the FirebaseRecyclerAdapter.

FirebaseRecyclerAdapter<Post, FirebaseViewHolder> adapter = new   FirebaseRecyclerAdapter<Post, FirebaseViewHolder>(             Post.class,             R.layout.recyclerview_list_item,             FirebaseViewHolder.class,             databaseReference      ) {         @Override         protected void populateViewHolder(FirebaseViewHolder viewHolder, Post model, int position) {              Picasso.with(getActivity())                     .load(model.image_url)                     .into(viewHolder.mImageView);             Log.v(TAG, model.image_url);             //viewHolder.mImageView.setImageResource(R.mipmap.ic_launcher);             viewHolder.mPostTitle.setText(model.title);             viewHolder.mPostDesc.setText(model.desc);         }          @Override         public FirebaseViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {             FirebaseViewHolder viewHolder = super.onCreateViewHolder(parent, viewType);             viewHolder.setOnClickListener(new FirebaseViewHolder.ClickListener() {                 @Override                 public void onItemClick(View view, int position) {                     Toast.makeText(getActivity(), "Item clicked at " + position, Toast.LENGTH_SHORT).show();                 }                  @Override                 public void onItemLongClick(View view, int position) {                     Toast.makeText(getActivity(), "Item long clicked at " + position, Toast.LENGTH_SHORT).show();                 }             });             return viewHolder;         }     }; 

回答2:

There are several answers to this question. One that worked for me was the answer provided by Frank van Puffelen how-to-implement-a-setonitemclicklistener-firebaserecyclerviewadapter

You need to change few things.

Before GigViewHolder constructor inside your public class GigViewHolder extends RecyclerView.ViewHolder define a global variable like this View itemView;

Inside GigViewHolder constructor, assign this variable the view passed as a parameter on your constructor like this this.itemView= view;

Then use this itemView in your populateViewHolder method as you had done as also shown

viewGig.itemView.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View v) {                 Log.i(Utils.TAG, "onItemClickGeneral: position " + position);                 // This WORKS, write your TODO here             }         }); 

You can also explore other options on the following links: RecyclerView onClick

文章来源: Firebase UI RecyclerView onClick