Good community, this is a long question, but I bring the solution in it, now you will see.
I'm doing a screen to bring some data from firebase to RecyclerView , up to here all right, there is a screen that does the same as in what happens to me the problem but in that it works, and because the more I look at it, everything is the same. Since firebase returns data in both, but in which I have the problem does not enter RecyclerView for onCreateViewHolder . I leave you first the adapter and the fragment inflo that work and then where I have the problem.
Greetings and thanks.
CODE THAT WORKS
Adapter:
public class AdaptadorRecyclerBandosAdmin extends RecyclerView.Adapter<AdaptadorRecyclerBandosAdmin.MiHolder> {
private static final int ANIMATED_ITEM_COUNT=2;
ArrayList<BandoItem> lista;
int lastPosition=-1;
OnCardBandoSelected listener;
Context c;
OnBandoAdminSelected onBandoAdminSelected;
OnBandoBorrar onBandoBorrar;
OnLeerMasBandos onLeerMasBandos;
ArrayList ids;
public AdaptadorRecyclerBandosAdmin(Context c, OnCardBandoSelected listener, OnBandoBorrar onBandoBorrar, OnLeerMasBandos onLeerMasBandos){
this.c=c;
this.listener=listener;
lista=new ArrayList();
ids=new ArrayList();
onBandoAdminSelected= (OnBandoAdminSelected) c;
this.onBandoBorrar=onBandoBorrar;
this.onLeerMasBandos=onLeerMasBandos;
}
@Override
public MiHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v= LayoutInflater.from(c).inflate(R.layout.card_bando_admin,parent,false);
return new MiHolder(v);
}
@Override
public void onBindViewHolder(final MiHolder holder, final int position) {
if(getItemCount()<=1){
FragmentModificarBandosAdmin.noHayBandos.setVisibility(View.VISIBLE);
FragmentModificarBandosAdmin.siHayBandos.setVisibility(View.GONE);
}else{
FragmentModificarBandosAdmin.noHayBandos.setVisibility(View.GONE);
FragmentModificarBandosAdmin.siHayBandos.setVisibility(View.VISIBLE);
}
if(position<lista.size()){
final BandoItem item = (BandoItem) lista.get(position);
holder.fecha.setText(item.getF_empiece());
holder.nombre.setText(item.getTitulo());
holder.descripcion.setText(item.getContenido());
holder.card.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
listener.onClick(view,position);
}
});
holder.check.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(holder.check.isChecked()){
ids.add(item.getId());
}else{
ids.remove(item);
}
}
});
holder.check.setChecked(false);
holder.leerMas.setVisibility(View.GONE);
holder.card.setVisibility(View.VISIBLE);
holder.barraProgreso.setVisibility(View.GONE);
}else{
holder.card.setVisibility(View.GONE);
holder.leerMas.setVisibility(View.VISIBLE);
holder.leerMas.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
holder.barraProgreso.setVisibility(View.VISIBLE);
holder.leerMas.setVisibility(View.GONE);
onLeerMasBandos.onMasClicked();
}
});
}
if(holder.barraProgreso.getVisibility()==View.VISIBLE){
holder.barraProgreso.setVisibility(View.GONE);
holder.leerMas.setVisibility(View.VISIBLE);
}
}
@Override
public int getItemCount() {
return lista.size()+1;
}
public void addItem(BandoItem item){
lista.add(item);
notifyItemChanged(lista.size()-1);
}
public void vaciarLista(){
lista.clear();
}
public void getItem(int position){
onBandoAdminSelected.onBandoAdminSelected((BandoItem) lista.get(position));
}
private void removePosition(){
for(int i=0; i<ids.size();i++){
for(int j=0; j<lista.size();j++){
if(ids.get(i).toString().equals(lista.get(j).getId())){
lista.remove(j);
}
}
}
}
public void posicionesABorrar(){
onBandoBorrar.onBandoBorrar(ids);
removePosition();
}
public void notificarCambio(){
notifyDataSetChanged();
}
class MiHolder extends RecyclerView.ViewHolder{
CardView card;
CheckBox check;
TextView fecha;
TextView nombre;
TextView descripcion;
Button leerMas;
ProgressBar barraProgreso;
public MiHolder(View itemView) {
super(itemView);
card= (CardView) itemView.findViewById(R.id.card_card_bandoAdmin);
check= (CheckBox) itemView.findViewById(R.id.check_card_bandoAdmin);
fecha= (TextView) itemView.findViewById(R.id.txt_fecha_card_bandoAdmin);
nombre= (TextView) itemView.findViewById(R.id.txt_nombre_card_bandoAdmin);
descripcion= (TextView) itemView.findViewById(R.id.txt_descripcion_card_bandoAdmin);
leerMas= (Button) itemView.findViewById(R.id.btn_leermas_card_bandoAdmin);
barraProgreso= (ProgressBar) itemView.findViewById(R.id.barra_card_bandoAdmin);
}
}
}
Fragment:
public class FragmentModificarBandosAdmin extends Fragment implements View.OnClickListener {
View v;
static LinearLayout noHayBandos;
static CoordinatorLayout siHayBandos;
RecyclerView recycler;
FloatingActionButton borrar;
AdaptadorRecyclerBandosAdmin adaptador;
SwipeRefreshLayout refresco;
FirebaseFirestore bd;
int contador=5;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
v=inflater.inflate(R.layout.fragment_modificar_bando_admin,container,false);
return v;
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
instancias();
acciones();
conexionABD();
}
private void instancias() {
siHayBandos= (CoordinatorLayout) v.findViewById(R.id.sihayBandos_modificarBandoAdmin);
noHayBandos= (LinearLayout) v.findViewById(R.id.nohayBandos_modificarBandoAdmin);
recycler= (RecyclerView) v.findViewById(R.id.recycler_modificarBandoAdmin);
borrar= (FloatingActionButton) v.findViewById(R.id.btn_acciones_modificarBandoAdmin);
adaptador=new AdaptadorRecyclerBandosAdmin(getContext(), new OnCardBandoSelected() {
@Override
public void onClick(View v, int position) {
adaptador.getItem(position);
}
}, new OnBandoBorrar() {
@Override
public void onBandoBorrar(ArrayList ids) {
borrarBandos(ids);
}
}, new OnLeerMasBandos() {
@Override
public void onMasClicked() {
leerMas();
}
});
refresco=v.findViewById(R.id.swipe_modificarBandoAdmin);
refresco.setColorSchemeResources(R.color.colorAccent, R.color.colorPrimarySuperlight);
bd=FirebaseFirestore.getInstance();
}
private void conexionABD(){
bd.collection("bandos").whereGreaterThanOrEqualTo("f_fin",new Date()).orderBy("f_fin", Query.Direction.ASCENDING).limit(contador).get()
.addOnSuccessListener(new OnSuccessListener<QuerySnapshot>() {
@Override
public void onSuccess(QuerySnapshot documentSnapshots) {
adaptador.vaciarLista();
ArrayList<DocumentSnapshot> documentos= (ArrayList<DocumentSnapshot>) documentSnapshots.getDocuments();
BandoItem item;
SimpleDateFormat sdf=new SimpleDateFormat("dd-MM-yyyy HH:mm");
DocumentSnapshot ultimoDocumento;
for(int i=0; i<documentos.size();i++){
item=new BandoItem();
ultimoDocumento=documentos.get(i);
item.setId(ultimoDocumento.getId());
item.setTitulo(ultimoDocumento.getString("titulo"));
item.setContenido(ultimoDocumento.getString("contenido"));
Date f_inicio=ultimoDocumento.getDate("f_empiece");
item.setF_empiece(sdf.format(f_inicio));
Date f_fin=ultimoDocumento.getDate("f_fin");
item.setF_fin(sdf.format(f_fin));
adaptador.addItem(item);
}
refresco.setRefreshing(true);
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(getContext(),R.string.errRecibirBando,Toast.LENGTH_LONG).show();
}
})
.addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
@Override
public void onComplete(@NonNull Task<QuerySnapshot> task) {
refresco.setRefreshing(false);
setearAdaptador();
}
});
}
private void leerMas() {
contador+=5;
bd.collection("bandos").whereGreaterThanOrEqualTo("f_fin",new Date()).orderBy("f_fin", Query.Direction.ASCENDING).limit(contador).get()
.addOnSuccessListener(new OnSuccessListener<QuerySnapshot>() {
@Override
public void onSuccess(QuerySnapshot documentSnapshots) {
adaptador.vaciarLista();
ArrayList<DocumentSnapshot> documentos= (ArrayList<DocumentSnapshot>) documentSnapshots.getDocuments();
BandoItem item;
SimpleDateFormat sdf=new SimpleDateFormat("dd-MM-yyyy HH:mm");
DocumentSnapshot ultimoDocumento;
for(int i=adaptador.getItemCount()-1; i<documentos.size();i++){
item=new BandoItem();
ultimoDocumento=documentos.get(i);
item.setId(ultimoDocumento.getId());
item.setTitulo(ultimoDocumento.getString("titulo"));
item.setContenido(ultimoDocumento.getString("contenido"));
Date f_inicio=ultimoDocumento.getDate("f_empiece");
item.setF_empiece(sdf.format(f_inicio));
Date f_fin=ultimoDocumento.getDate("f_fin");
item.setF_fin(sdf.format(f_fin));
adaptador.addItem(item);
}
adaptador.notifyDataSetChanged();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(getContext(),R.string.errRecibirBando,Toast.LENGTH_LONG).show();
return;
}
});
}
private void setearAdaptador() {
LinearLayoutManager layoutManager = new LinearLayoutManager(getContext());
layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
recycler.setLayoutManager(layoutManager);
recycler.setAdapter(adaptador);
if(adaptador.getItemCount()<=1){
noHayBandos.setVisibility(View.VISIBLE);
siHayBandos.setVisibility(View.GONE);
}else{
noHayBandos.setVisibility(View.GONE);
siHayBandos.setVisibility(View.VISIBLE);
}
}
private void acciones() {
borrar.setOnClickListener(this);
}
private void borrarBandos(ArrayList ids) {
if(ids.size()==0){
Toast.makeText(getContext(), R.string.errBorrarBando,Toast.LENGTH_SHORT).show();
}else{
for(int i=0; i<ids.size();i++) {
bd.collection("bandos").document(String.valueOf(ids.get(i))).delete()
.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(getContext(),R.string.errBorrarAlgunosBandos,Toast.LENGTH_LONG).show();
}
});
}
adaptador.notifyDataSetChanged();
}
}
@Override
public void onClick(View view) {
final AlertDialog.Builder builder=new AlertDialog.Builder(getContext());
builder.setTitle(R.string.atencion)
.setMessage(R.string.dialogoBando)
.setPositiveButton(R.string.aceptar, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
adaptador.posicionesABorrar();
}
}).setNegativeButton(R.string.cancelar, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
}
});
builder.create().show();
}
}
}
CODE THAT DOES NOT WORK
Adapter:
public class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.PersoHolder> {
private static final int ANIMATED_ITEM_COUNT=2;
Context c;
ArrayList<IncidenciaItem> lista;
int lastPosition=-1;
static OnCardSelected listener;
OnMasClicked onMasClicked;
OnIncidenciasDesactivar onIncidenciasDesactivar;
OnIncidenciaSelected onIncidenciaSelected;
FirebaseStorage firebaseStorage;
ArrayList ids;
public ItemAdapter(Context c, OnCardSelected listener, OnMasClicked onMasClicked, OnIncidenciasDesactivar onIncidenciasDesactivar){
this.c=c;
lista=new ArrayList();
ids=new ArrayList();
this.listener=listener;
this.onMasClicked=onMasClicked;
this.onIncidenciasDesactivar=onIncidenciasDesactivar;
onIncidenciaSelected= (OnIncidenciaSelected) c;
firebaseStorage=FirebaseStorage.getInstance();
Log.v("PruebaIncidencias","entra en el constructor");
}
@Override
public PersoHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v= LayoutInflater.from(c).inflate(R.layout.card_incidencias_admin,parent,false);
return new PersoHolder(v);
}
@Override
public void onBindViewHolder(final PersoHolder holder, final int position) {
SimpleDateFormat sdf=new SimpleDateFormat("dd-MM-yyyy HH:mm");
if(getItemCount()<=1){
IncidenciasFragmentAdmin.noIncidencias.setVisibility(View.VISIBLE);
IncidenciasFragmentAdmin.siIncidencias.setVisibility(View.GONE);
}else{
IncidenciasFragmentAdmin.noIncidencias.setVisibility(View.GONE);
IncidenciasFragmentAdmin.siIncidencias.setVisibility(View.VISIBLE);
}
if(position<lista.size()) {
final IncidenciaItem i = lista.get(position);
holder.fecha.setText(sdf.format(i.getT_stamp()));
holder.nombre.setText(i.getTitulo());
holder.direccion.setText(i.getDireccion());
String imagen="";
if(i.getImg3()!=null)
imagen=i.getImg3();
if(i.getImg2()!=null)
imagen=i.getImg2();
if(i.getImg1()!=null)
imagen=i.getImg1();
StorageReference sf = firebaseStorage.getReference(imagen);
sf.getBytes(Long.MAX_VALUE).addOnSuccessListener(new OnSuccessListener<byte[]>() {
@Override
public void onSuccess(byte[] bytes) {
Glide.with(c).load(bytes).centerCrop().into(holder.imagen);
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(c, R.string.errFotosIncidenciasAdmin,Toast.LENGTH_SHORT).show();
}
});
holder.card.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
listener.onClick(view,position);
}
});
holder.check.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(holder.check.isChecked()){
ids.add(i.getId());
}else{
ids.remove(i);
}
}
});
holder.check.setChecked(false);
holder.barra.setVisibility(View.GONE);
holder.mas.setVisibility(View.GONE);
holder.card.setVisibility(View.VISIBLE);
}else{
holder.card.setVisibility(View.GONE);
holder.mas.setVisibility(View.VISIBLE);
holder.mas.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
holder.barra.setVisibility(View.VISIBLE);
holder.mas.setVisibility(View.GONE);
onMasClicked.onMas();
}
});
}
if(holder.barra.getVisibility()==View.VISIBLE){
holder.barra.setVisibility(View.GONE);
holder.mas.setVisibility(View.VISIBLE);
}
}
@Override
public int getItemCount() {
return lista.size()+1;
}
public void getItem(int position){
onIncidenciaSelected.onIncidencia(lista.get(position));
}
private void removePosition(){
for(int i=0; i<ids.size();i++){
for(int j=0; j<lista.size();j++){
if(ids.get(i).toString().equals(lista.get(j).getId())){
lista.remove(j);
}
}
}
}
public void posicionesADescativar(){
onIncidenciasDesactivar.OnPosicionesDesactivar(ids);
removePosition();
}
public void addItem(IncidenciaItem item){
lista.add(item);
notifyItemChanged(lista.size()-1);
}
public void vaciarLista(){
lista.clear();
}
public void notificarCambio(){
notifyDataSetChanged();
}
static class PersoHolder extends RecyclerView.ViewHolder {
TextView fecha;
TextView nombre;
TextView direccion;
ImageView imagen;
CheckBox check;
CardView card;
Button mas;
ProgressBar barra;
public PersoHolder(View itemView) {
super(itemView);
Log.v("PruebaIncidencias","entra en el persoholder");
fecha= (TextView) itemView.findViewById(R.id.txt_fecha_card_incidenciasAdmin);
nombre= (TextView) itemView.findViewById(R.id.txt_nombe_card_incidenciasAdmin);
direccion= (TextView) itemView.findViewById(R.id.txt_direccion_card_incidenciasAdmin);
imagen= (ImageView) itemView.findViewById(R.id.img_card_incidenciasAdmin);
check= (CheckBox) itemView.findViewById(R.id.check_card_incidenciasAdmin);
card= (CardView) itemView.findViewById(R.id.card_card_incidenciasAdmin);
mas= (Button) itemView.findViewById(R.id.btn_leermas_card_incidecniasAdmin);
barra= (ProgressBar) itemView.findViewById(R.id.barra_card_incidenciasAdmin);
}
}
}
Fragment:
public class IncidenciasFragmentAdmin extends Fragment implements View.OnClickListener{
View v;
RecyclerView recycler;
ItemAdapter adaptador;
static LinearLayout noIncidencias;
static CoordinatorLayout siIncidencias;
FloatingActionButton acciones;
SwipeRefreshLayout refresco;
FirebaseFirestore db;
DocumentSnapshot documentoDesde;
int contador=5;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
v=inflater.inflate(R.layout.fragment_incidencias_admin,container,false);
return v;
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
instancias();
acciones();
iniciarConsultaABD();
}
private void instancias() {
recycler= (RecyclerView) v.findViewById(R.id.recycler_incidenciasAdmin);
noIncidencias= (LinearLayout) v.findViewById(R.id.nohayincidencias_incidenciasAdmin);
siIncidencias= (CoordinatorLayout) v.findViewById(R.id.sihayIncidencias_incidenciasAdmin);
acciones= (FloatingActionButton) v.findViewById(R.id.btn_acciones_incidenciasAdmin);
recycler.setVisibility(View.GONE);
refresco=v.findViewById(R.id.swipe_incidenciasAdmin);
refresco.setColorSchemeResources(R.color.colorAccent, R.color.colorPrimarySuperlight);
adaptador=new ItemAdapter(getContext(), new OnCardSelected() {
@Override
public void onClick(View v, int position) {
adaptador.getItem(position);
}
}, new OnMasClicked() {
@Override
public void onMas() {
leerMas();
}
}, new OnIncidenciasDesactivar() {
@Override
public void OnPosicionesDesactivar(ArrayList ids) {
desactivarIncidencias(ids);
}
});
db = FirebaseFirestore.getInstance();
}
private void setearAdaptador() {
LinearLayoutManager layoutManager = new LinearLayoutManager(getContext());
layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
recycler.setLayoutManager(layoutManager);
recycler.setAdapter(adaptador);
if(adaptador.getItemCount()<=1){
noIncidencias.setVisibility(View.VISIBLE);
siIncidencias.setVisibility(View.GONE);
}else{
noIncidencias.setVisibility(View.GONE);
siIncidencias.setVisibility(View.VISIBLE);
}
}
private void acciones() {
acciones.setOnClickListener(this);
}
private void iniciarConsultaABD() {
db.collection("incidencias").whereEqualTo("activa",true).orderBy("t_stamp", Query.Direction.DESCENDING).limit(contador).get()
.addOnSuccessListener(new OnSuccessListener<QuerySnapshot>() {
@Override
public void onSuccess(QuerySnapshot documentSnapshots) {
adaptador.vaciarLista();
ArrayList<DocumentSnapshot> documentos= (ArrayList<DocumentSnapshot>) documentSnapshots.getDocuments();
Log.v("PruebaIncidencias",documentSnapshots.size()+"");
for(int i=0; i<documentos.size(); i++){
DocumentSnapshot datos = documentos.get(i);
IncidenciaItem incidenciaItem = new IncidenciaItem(datos.getString("titulo"),
datos.getDate("t_stamp"), datos.getString("usuario"), datos.getString("descripcion"),
datos.getString("img1"), datos.getString("img2"), datos.getString("img3"),
datos.getString("direccion"), datos.getGeoPoint("coordenadas"), String.valueOf(datos.getId()),
datos.getBoolean("activa"));
adaptador.addItem(incidenciaItem);
}
refresco.setRefreshing(true);
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(getContext(),R.string.errRecibirBando,Toast.LENGTH_LONG).show();
}
}).addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
@Override
public void onComplete(@NonNull Task<QuerySnapshot> task) {
refresco.setRefreshing(false);
setearAdaptador();
}
});
}
private void leerMas() {
contador+=5;
db.collection("incidencias").whereEqualTo("activa",true).orderBy("t_stamp", Query.Direction.DESCENDING).limit(contador).get()
.addOnSuccessListener(new OnSuccessListener<QuerySnapshot>() {
@Override
public void onSuccess(QuerySnapshot documentSnapshots) {
adaptador.vaciarLista();
ArrayList<DocumentSnapshot> documentos= (ArrayList<DocumentSnapshot>) documentSnapshots.getDocuments();
for(int i=0; i<documentos.size(); i++){
DocumentSnapshot datos = documentos.get(i);
IncidenciaItem incidenciaItem = new IncidenciaItem(datos.getString("titulo"),
datos.getDate("t_stamp"), datos.getString("usuario"), datos.getString("descripcion"),
datos.getString("img1"), datos.getString("img2"), datos.getString("img3"),
datos.getString("direccion"), datos.getGeoPoint("coordenadas"), String.valueOf(datos.getId()),
datos.getBoolean("activa"));
adaptador.addItem(incidenciaItem);
}
adaptador.notifyDataSetChanged();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(getContext(),R.string.errRecibirBando,Toast.LENGTH_LONG).show();
return;
}
});
}
private void desactivarIncidencias(ArrayList ids) {
HashMap<String, Object> map=new HashMap<>();
map.put("activa",false);
if(ids.size()==0){
Toast.makeText(getContext(), R.string.errDesctivarIncidencias,Toast.LENGTH_SHORT).show();
}else{
for(int i=0; i<ids.size();i++) {
db.collection("incidencias").document(String.valueOf(ids.get(i))).update(map).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(getContext(),R.string.errBorrarAlgunasIncidencias,Toast.LENGTH_LONG).show();
}
});
}
adaptador.notifyDataSetChanged();
}
}
@Override
public void onClick(View view) {
final AlertDialog.Builder builder=new AlertDialog.Builder(getContext());
builder.setTitle(R.string.atencion)
.setMessage(R.string.dialogoIncidencias)
.setPositiveButton(R.string.aceptar, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
adaptador.posicionesADescativar();
}
}).setNegativeButton(R.string.cancelar, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
}
});
builder.create().show();
}
}