我使用回收视图，并且在刷卡删除时需要从卡视图中获取特定数据。就像在刷卡进行删除时，如果我的卡具有名称电子邮件或电话..然后它给我电话号码..我做出一些处理的逻辑，但是我每次都失败。我的逻辑是，如果有人交换了卡，则在适配器类中，调用了delete方法，他们选择交换卡的ID并对此进行了快照。但是它不起作用，并且在快照中为null，因为如果（ a == i）首先运行并删除数据形式firebase 我要他先拍摄快照然后删除
我在适配器类中的逻辑
public void deleteItem(int position) {
for (int i = 0 ;i <= 1 ; i++) {
if (a > i) {
String id = getSnapshots().getSnapshot(condation).getId();
DocumentReference documentReference = firebaseFirestore.
collection("Saloon Appointment History")
.document(FirebaseAuth.getInstance().getCurrentUser().getUid())
.collection("My Appointment").document(id);
documentReference.get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
@Override
public void onComplete(@NonNull Task<DocumentSnapshot> task) {
if (task.isSuccessful()) {
DocumentSnapshot document = task.getResult();
assert document != null;
Log.d(TAG, "onComplete: " + "hi2");
phone = (String) document.getString("customerPhone");
Log.d(TAG, "onComplete: " + phone);
} else {
Log.d(TAG, "get failed with ", task.getException());
}
}
});
}
if (a == i)
{
Log.d(TAG, "onComplete: " + "hi3");
getSnapshots().getSnapshot(position).getReference().delete();
}
}
}
AdvancedAppointment
import androidx.annotation.NonNull;
import androidx.appcompat.app.ActionBar;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.coordinatorlayout.widget.CoordinatorLayout;
import androidx.core.content.res.ResourcesCompat;
import androidx.recyclerview.widget.ItemTouchHelper;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import com.firebase.ui.firestore.FirestoreRecyclerOptions;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.firestore.CollectionReference;
import com.google.firebase.firestore.FirebaseFirestore;
import com.google.firebase.firestore.Query;
import com.google.firebase.firestore.QueryDocumentSnapshot;
import com.google.firebase.firestore.QuerySnapshot;
import www.sanju.motiontoast.MotionToast;
public class AdvancedAppointment extends AppCompatActivity {
AlertDialog.Builder builder;
private CoordinatorLayout coordinatorLayout;
private FirebaseAuth firebaseAuth = FirebaseAuth.getInstance();
FirebaseFirestore db = FirebaseFirestore.getInstance();
CollectionReference noteRef = db.collection("Saloon Advanced Appointment ")
.document(FirebaseAuth.getInstance()
.getCurrentUser().getUid()).collection("Appointment");
private AdvancedAppointmentAdapter advancedAppointmentAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_advanced_appointment);
Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar1);
coordinatorLayout = (CoordinatorLayout)findViewById(R.id.coordinatorLayout);
builder = new AlertDialog.Builder(this);
setSupportActionBar(toolbar);
ActionBar actionBar = getSupportActionBar();
actionBar.setTitle("Appointment Detail ");
setUpRecyclerView();
}
private void setUpRecyclerView() {
Query query = noteRef.orderBy("date", Query.Direction.DESCENDING);
FirestoreRecyclerOptions<AdvancedClass> options = new FirestoreRecyclerOptions.Builder<AdvancedClass>()
.setQuery(query, AdvancedClass.class)
.build();
advancedAppointmentAdapter = new AdvancedAppointmentAdapter(options);
RecyclerView recyclerView = findViewById(R.id.recycler_view1);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setAdapter(advancedAppointmentAdapter);
new ItemTouchHelper(new ItemTouchHelper.SimpleCallback(0,
ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT)
{
@Override
public boolean onMove(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder,
@NonNull RecyclerView.ViewHolder target)
{
return false;
}
@Override
public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction)
{
builder.setMessage("Are you sure you want to cancel this appointment").setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which)
{
advancedAppointmentAdapter.deleteItem(viewHolder.getAdapterPosition());
MotionToast.Companion.darkToast(AdvancedAppointment.this,"Appointment is Cancel",
MotionToast.TOAST_SUCCESS,
MotionToast.GRAVITY_BOTTOM,
MotionToast.LONG_DURATION,
ResourcesCompat.getFont(AdvancedAppointment.this,R.font.helvetica_regular));
CollectionReference collectionOfProducts = db.collection("Saloon Send Message")
.document(FirebaseAuth.getInstance().getCurrentUser().getUid()).collection("My Number");
collectionOfProducts
.whereEqualTo("customerPhone","03351306390" )
.get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
@Override
public void onComplete(@NonNull Task<QuerySnapshot> task) {
if (task.isSuccessful()) {
for (QueryDocumentSnapshot document : task.getResult()) {
document.getReference().delete();
}
Intent intent = new Intent(AdvancedAppointment.this,SendMessage.class);
finish();
startActivity(intent);
}
}
});
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
Intent intent = new Intent(AdvancedAppointment.this,Appointment.class);
startActivity(intent);
finish();
}
});
AlertDialog dialog =builder.create();
dialog.setTitle("Confirmation");
dialog.show();
}
}).attachToRecyclerView(recyclerView);
}
@Override
protected void onStart()
{
super.onStart();
advancedAppointmentAdapter.startListening();
}
@Override
protected void onStop()
{
super.onStop();
advancedAppointmentAdapter.stopListening();
}
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_option,menu);
return true;
}
@Override
public boolean onOptionsItemSelected(@NonNull MenuItem item) {
switch (item.getItemId())
{
case R.id.LogoutOption:
firebaseAuth.signOut();
startActivity(new Intent(AdvancedAppointment.this, BeautySalonLogin.class));
finish();
return true;
case R.id.HistoryOption:
startActivity(new Intent(AdvancedAppointment.this, History.class));
finish();
return true;
case R.id.ClearToken:
builder.setMessage("You want to reset the token").setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which)
{
clearToken();
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
AlertDialog dialog =builder.create();
dialog.setTitle("Confirmation");
dialog.show();
return true;
case R.id.ProfileOption:
startActivity(new Intent(AdvancedAppointment.this, PersonlInfo.class));
finish();
return true;
}
return super.onOptionsItemSelected(item);
}
public void clearToken()
{
CollectionReference collectionReference = db.collection("Saloon Token")
.document(FirebaseAuth.getInstance().getCurrentUser().getUid()).collection("Tokens");
collectionReference.get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
@Override
public void onComplete(@NonNull Task<QuerySnapshot> task) {
if (task.isSuccessful()) {
for (QueryDocumentSnapshot document : task.getResult())
{
document.getReference().delete();
}
MotionToast.Companion.createToast(AdvancedAppointment.this, "Token is clear",
MotionToast.TOAST_SUCCESS,
MotionToast.GRAVITY_BOTTOM,
MotionToast.LONG_DURATION,
ResourcesCompat.getFont(AdvancedAppointment.this, R.font.helvetica_regular));
// Snackbar.make(coordinatorLayout,"All token is clear" ,Snackbar.LENGTH_LONG).show();
CollectionReference collectionReference = db
.collection("Saloon Estimated Time")
.document(FirebaseAuth.getInstance().getCurrentUser().getUid())
.collection("Time");
collectionReference.get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
@Override
public void onComplete(@NonNull Task<QuerySnapshot> task)
{
for (QueryDocumentSnapshot documentSnapshot:task.getResult())
{
documentSnapshot.getReference().delete();
}
}
});
} else {
}
}
});
}
}
AdvancedAppointmentAdapter
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.firebase.ui.firestore.FirestoreRecyclerAdapter;
import com.firebase.ui.firestore.FirestoreRecyclerOptions;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.firestore.DocumentReference;
import com.google.firebase.firestore.DocumentSnapshot;
import com.google.firebase.firestore.FirebaseFirestore;
public class AppointmentAdapter extends FirestoreRecyclerAdapter<AppointmentClass, AppointmentAdapter.AppointmentHolder> {
public static String phone;
FirebaseFirestore firebaseFirestore = FirebaseFirestore.getInstance();
private static final String TAG = "Dashboard";
int condation ;
int a = 1;
public AppointmentAdapter(@NonNull FirestoreRecyclerOptions<AppointmentClass> options)
{
super(options);
}
@Override
protected void onBindViewHolder(@NonNull AppointmentHolder holder, int i, @NonNull AppointmentClass model) {
holder.textViewToken.setText(model.getToken());
holder.textViewTime.setText(model.getTime());
holder.textViewDate.setText(model.getDate());
holder.textViewCustomerName.setText(model.getCustomerName());
holder.textViewCustomerPhone.setText(model.getCustomerPhone());
for (String service :model.getService())
{
holder.textViewService.append(service);
holder.textViewService.append("\n");
}
}
@NonNull
@Override
public AppointmentHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.history_item_cards,
parent,false);
return new AppointmentHolder(v);
}
public void deleteItem(int position) {
String id = getSnapshots().getSnapshot(condation).getId();
DocumentReference documentReference = firebaseFirestore.
collection("Saloon Appointment History")
.document(FirebaseAuth.getInstance().getCurrentUser().getUid())
.collection("My Appointment").document(id);
documentReference.get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
@Override
public void onComplete(@NonNull Task<DocumentSnapshot> task) {
if (task.isSuccessful())
{
DocumentSnapshot document = task.getResult();
assert document != null;
phone = (String) document.getString("customerPhone");
Log.d(TAG, "onComplete: " + phone);
getSnapshots().getSnapshot(position).getReference().delete();
} else {
Log.d(TAG, "get failed with ", task.getException());
}
}
});
}
class AppointmentHolder extends RecyclerView.ViewHolder {
TextView textViewToken;
TextView textViewTime;
TextView textViewDate;
TextView textViewCustomerName;
TextView textViewCustomerPhone;
TextView textViewService;
public AppointmentHolder(View itemView)
{
super(itemView);
textViewToken = itemView.findViewById(R.id.text_view_Token);
textViewTime = itemView.findViewById(R.id.text_view_Time);
textViewDate = itemView.findViewById(R.id.text_view_Date);
textViewCustomerName = itemView.findViewById(R.id.text_view_CustomerName);
textViewCustomerPhone= itemView.findViewById(R.id.text_view_CustomerPhone);
textViewService = itemView.findViewById(R.id.text_view_Service);
}
}
}
AdvancedClass
public class AdvancedClass {
private String time;
private String date;
private String customerName;
private String customerPhone;
public AdvancedClass()
{
}
public String getTime() {
return time;
}
public String getDate() {
return date;
}
public String getCustomerName() {
return customerName;
}
public String getCustomerPhone() {
return customerPhone;
}
}