Я пытаюсь удалить элемент из firebaseRecyelerAdapter в методе populateViewHolder. Я использую item.setVisibility(view.GONE), но это снова показывает значение при возврате в этот фрагмент. вот мой код:
public class ChatsFragment extends Fragment {
private RecyclerView mConvList;
private DatabaseReference mConvDatabase;
private DatabaseReference mMessageDatabase;
private DatabaseReference mUsersDatabase;
private FirebaseAuth mAuth;
private String mCurrent_user_id;
private View mMainView;
private ProgressDialog pd;
public ChatsFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
mMainView = inflater.inflate(R.layout.fragment_chats, container, false);
mConvList = (RecyclerView) mMainView.findViewById(R.id.conv_list);
mAuth = FirebaseAuth.getInstance();
mCurrent_user_id = mAuth.getCurrentUser().getUid();
mConvDatabase = FirebaseDatabase.getInstance().getReference().child("Chat").child(mCurrent_user_id);
mConvDatabase.keepSynced(true);
mUsersDatabase = FirebaseDatabase.getInstance().getReference().child("Users");
mMessageDatabase = FirebaseDatabase.getInstance().getReference().child("messages").child(mCurrent_user_id);
mUsersDatabase.keepSynced(true);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getContext());
linearLayoutManager.setReverseLayout(true);
linearLayoutManager.setStackFromEnd(true);
mConvList.setHasFixedSize(true);
mConvList.setLayoutManager(linearLayoutManager);
// Inflate the layout for this fragment
return mMainView;
}
@Override
public void onStart() {
super.onStart();
Query conversationQuery = mConvDatabase.orderByChild("timestamp");
final FirebaseRecyclerAdapter<Conv, ConvViewHolder> firebaseConvAdapter = new FirebaseRecyclerAdapter<Conv, ConvViewHolder>(
Conv.class,
R.layout.users_single_layout,
ConvViewHolder.class,
conversationQuery
) {
@Override
protected void populateViewHolder(final ConvViewHolder convViewHolder, final Conv conv, final int i) {
final String list_user_id = getRef(i).getKey();
Query lastMessageQuery = mMessageDatabase.child(list_user_id).limitToLast(1);
lastMessageQuery.addChildEventListener(new ChildEventListener() {
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String s) {
String data = dataSnapshot.child("message").getValue().toString();
convViewHolder.setMessage(data, conv.isSeen());
}
@Override
public void onChildChanged(DataSnapshot dataSnapshot, String s) {
}
@Override
public void onChildRemoved(DataSnapshot dataSnapshot) {
}
@Override
public void onChildMoved(DataSnapshot dataSnapshot, String s) {
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
mUsersDatabase.child(list_user_id).addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
final String userName = dataSnapshot.child("name").getValue().toString();
String userThumb = dataSnapshot.child("thumb_image").getValue().toString();
if(dataSnapshot.hasChild("online")) {
String userOnline = dataSnapshot.child("online").getValue().toString();
convViewHolder.setUserOnline(userOnline);
}
convViewHolder.setName(userName);
convViewHolder.setUserImage(userThumb, getContext());
convViewHolder.mView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent chatIntent = new Intent(getContext(), ChatActivity.class);
chatIntent.putExtra("user_id", list_user_id);
chatIntent.putExtra("user_name", userName);
startActivity(chatIntent);
}
});
convViewHolder.mView.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View view) {
Toast.makeText(getContext(), "long clicked", Toast.LENGTH_SHORT).show();
firebaseConvAdapter.getRef(i).removeValue()
.addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
Toast.makeText(getContext(), "deleted", Toast.LENGTH_SHORT).show();
}
});
return false;
}
});
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
};
mConvList.setAdapter(firebaseConvAdapter);
}
public static class ConvViewHolder extends RecyclerView.ViewHolder {
Context context;
View mView;
public ConvViewHolder(View itemView) {
super(itemView);
mView = itemView;
}
public void setMessage(String message, boolean isSeen){
TextView userStatusView = (TextView) mView.findViewById(R.id.user_single_status);
userStatusView.setText(message);
if(!isSeen){
userStatusView.setTypeface(userStatusView.getTypeface(), Typeface.BOLD);
} else {
userStatusView.setTypeface(userStatusView.getTypeface(), Typeface.NORMAL);
}
}
public void setName(String name){
TextView userNameView = (TextView) mView.findViewById(R.id.user_single_name);
userNameView.setText(name);
}
public void setUserImage(String thumb_image, Context ctx){
CircleImageView userImageView = (CircleImageView) mView.findViewById(R.id.user_single_image);
Picasso.with(ctx).load(thumb_image).placeholder(R.mipmap.default_image).into(userImageView);
}
public void setUserOnline(String online_status) {
ImageView userOnlineView = (ImageView) mView.findViewById(R.id.user_single_online_icon);
if(online_status.equals("true")){
userOnlineView.setVisibility(View.VISIBLE);
} else {
userOnlineView.setVisibility(View.INVISIBLE);
}
} }}
Я пытаюсь удалить значение метода LongClicked. Спасибо. Я также пытался использовать метод item.remove(), но это не метод remove(), который не распознается в этом методе. Помогите пожалуйста мне
