I'm trying to retrieve comments from the database but it shows all the comments as duplicate
This same listner works fine with fragments but gives duplicate item bug when implemented on Activity
private void startListening() {
Query query = mCommentsDatabase;
FirebaseRecyclerOptions<Comment> options =
new FirebaseRecyclerOptions.Builder<Comment>()
.setQuery(query, Comment.class)
.build();
FirebaseRecyclerAdapter adapter = new FirebaseRecyclerAdapter<Comment, CommentsViewHolder>(options){
@Override
public CommentsViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
// Create a new instance of the ViewHolder, in this case we are using a custom
// layout called R.layout.message for each item
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.single_comment_item, parent, false);
return new CommentsViewHolder(view);
}
@Override
protected void onBindViewHolder(final CommentsViewHolder holder, int position, final Comment model) {
mCommentsDatabase.addChildEventListener(new ChildEventListener() {
@Override
public void onChildAdded(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {
if (dataSnapshot.exists() && dataSnapshot != null){
if (dataSnapshot.exists()){
String CommenterId = dataSnapshot.child("uid").getValue().toString();
mUsersDatabase.child(CommenterId).addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot userDataSnapshot) {
if (userDataSnapshot.exists()){
String username = userDataSnapshot.child("username").getValue().toString();
String thumbImage = userDataSnapshot.child("profile_thumbnail").getValue().toString();
String comment = dataSnapshot.child("body").getValue().toString();
Long timestamp = Long.parseLong(dataSnapshot.child("timestamp").getValue().toString());
GetTimeAgo getTimeAgo = new GetTimeAgo();
String time = getTimeAgo.getTimeAgo(timestamp, getApplicationContext());
holder.setName(username);
holder.setComment(comment);
holder.setImage(thumbImage, getApplicationContext());
holder.setTime(time);
}
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
}
}
@Override
public void onChildChanged(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {
}
@Override
public void onChildRemoved(@NonNull DataSnapshot dataSnapshot) {
}
@Override
public void onChildMoved(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
};
mCommentsList.setAdapter(adapter);
adapter.startListening();
}
Can someone help point to what's wrong?
I've implemented the same thing in fragments it's working but when used in an Activity it works weirdly.
