java将对象从一个RecyclerView移动到另一个RecyclerView
我目前正在为一些足球场制作一个预订应用程序。我有两个回收视图：活动预订和取消预订。我还有一个自定义的回收器视图适配器。两个回收器视图使用相同的适配器
我想做的是：如果我点击我的活动预订回收器视图中的一个按钮，我想从活动预订中删除预订，并将其放入我的取消预订中。我将在离开我的定制适配器时提到我使用Firebase以获得我的预订状态（活动或取消）
public class RecyclerViewAdapterRezervare extends RecyclerView.Adapter<RecyclerViewAdapterRezervare.RecycleViewHolder> {
private List<Rezervare> rezervari;
private Context context;
private LayoutInflater inflater;
private String numeUtilizator;
private String status;
private Rezervare rezervare = new Rezervare();
private DatabaseReference reff;
public RecyclerViewAdapterRezervare(List<Rezervare> rezervari, Context context, String numeUtilizator) {
this.rezervari = rezervari;
this.context = context;
this.numeUtilizator = numeUtilizator;
this.inflater = LayoutInflater.from(context);
}
@NonNull
@Override
public RecycleViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.rezervari_layout, parent, false);
return new RecycleViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull RecycleViewHolder holder, int position) {
rezervare = rezervari.get(position);
reff = FirebaseDatabase.getInstance().getReference();
List<String> listaOre = rezervare.getOre();
Map<String, Object> mapOre = new HashMap<>();
for(String ora : listaOre){
mapOre.put(ora, false);
}
// this will return the status ("activa" is the booking is active, or "anulata" is it's cancelled)
getStatus(rezervare, new StatusCallback() {
@Override
public void onCallback(String value) {
status = value;
holder.btn_anuleaza.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Log.v("status", status);
new AlertDialog.Builder(view.getContext()).setTitle("Anulare rezervare").setMessage("Sunteti sigur ca doriti anularea rezervarii?")
.setPositiveButton(R.string.da, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
// if the cancel button is clicked, i update my database so the status of the booking will be "anulata" - cancelled reff.child("Users").child(numeUtilizator).child("rezervari").child(rezervare.getData()).child(rezervare.getNumeTeren()).child("status").setValue("anulata");
reff.child("Rezervari").child(rezervare.getData()).child("Fotbal").child(rezervare.getNumeTeren()).updateChildren(mapOre);
rezervare.setEsteAnulata(false);
Toast.makeText(view.getContext(), "Anulare cu succes!", Toast.LENGTH_LONG).show();
}
}).setNegativeButton(R.string.nu, null).show();
}
});
}
});
}
@Override
public int getItemCount() {
return rezervari.size();
}
// i have updated my code with the delete and insert a booking
public void stergeRezervare(int position){
rezervari.remove(position);
notifyDataSetChanged();
}
public void adaugaRezervare(Rezervare rezervare){
rezervari.add(rezervare);
notifyDataSetChanged();
}
这是从firebase获得预订信息的功能 我有三个单独的活动预订、取消预订和过去预订列表
public interface RezervariListCallback {
void onCallback(List<Rezervare> rezervariActuale, List<Rezervare> rezervariTrecute, List<Rezervare> rezervariAnulate);
}
public void getRezervari(String nume, RezervariListCallback myCallback){
reff.child("Users").child(nume).child("rezervari").addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot snapshot) {
for(DataSnapshot data : snapshot.getChildren()){
String dataRezervare = data.getKey();
dateRezervari.add(dataRezervare);
reff.child("Users").child(nume).child("rezervari").child(dataRezervare).addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot snapshot) {
for(DataSnapshot data : snapshot.getChildren()){
String numeTeren = data.getKey();
reff.child("Users").child(nume).child("rezervari").child(dataRezervare).child(numeTeren).child("ore").addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot snapshot) {
List<String> ore = new ArrayList<>();
for(DataSnapshot data : snapshot.getChildren()){
String ora = data.getKey();
ore.add(ora);
}
getAdresa(nume, dataRezervare, numeTeren, new AdresaCallback() {
@Override
public void onCallbackAdresa(String value) {
Rezervare rezervare = new Rezervare(numeTeren, ore, dataRezervare, value);
String dataAzi = getDataAzi();
reff.child("Users").child(nume).child("rezervari").child(dataRezervare).child(numeTeren).child("status").addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot snapshot) {
String status = (String) snapshot.getValue();
if(comparaData(dataAzi, rezervare.getData())){
if(status.equals("activa")){
rezervariActive.add(rezervare);
} else {
rezervariAnulate.add(rezervare);
}
} else {
rezervariTrecute.add(rezervare);
}
myCallback.onCallback(rezervariActive, rezervariTrecute, rezervariAnulate);
}
@Override
public void onCancelled(@NonNull DatabaseError error) {
}
});
}
});
}
@Override
public void onCancelled(@NonNull DatabaseError error) {
}
});
}
}
@Override
public void onCancelled(@NonNull DatabaseError error) {
}
});
}
}
@Override
public void onCancelled(@NonNull DatabaseError error) {
}
});
}
这就是我设置适配器的地方
public void updateRezervari(View view, RecyclerView activeBookingsRecycler, RecyclerView pastBookingsRecycler, RecyclerView cancelledBookingsRecycler){
AsyncTask.execute(new Runnable() {
@Override
public void run() {
getRezervari(numeUtilizator, new RezervariListCallback() {
@Override
public void onCallback(List<Rezervare> rezervariActuale, List<Rezervare> rezervariTrecute, List<Rezervare> rezervariAnulate) {
if(rezervariActuale.size()>0){
tvFaraRezervariActive.setEnabled(false);
tvFaraRezervariAnulate.setEnabled(false);
tvFaraRezervariTrecute.setEnabled(false);
}
Log.v("rezAc", rezervariActuale.toString());
Log.v("rezTr", rezervariTrecute.toString());
RecyclerViewAdapterRezervare adapter = new RecyclerViewAdapterRezervare(rezervariActuale, view.getContext(), numeUtilizator);
activeBookingsRecycler.setAdapter(adapter);
adapter = new RecyclerViewAdapterRezervare(rezervariTrecute, view.getContext(), numeUtilizator);
pastBookingsRecycler.setAdapter(adapter);
adapter = new RecyclerViewAdapterRezervare(rezervariAnulate, view.getContext(), numeUtilizator);
cancelledBookingsRecycler.setAdapter(adapter);
}
});
}
});
}
你能给我一些关于如何从一个回收者的视角转移到另一个视角的建议吗？谢谢!
# 1 楼答案
由于您正在使用Firebase获取预订的状态，您可以在Firebase数据库中将状态更新为cancelled，然后您将从Firebase侦听器获得一个回调，在那里您可以更新ArrayList并调用notifyDataSetChanged（）