Проблема, с которой я сталкиваюсь сейчас, заключается в том, что единственный способ удалить сообщение - это когда я нажимаю на сообщение точно в момент истечения срока его действия. Когда истечет время, когда я не нажму на сообщение, сообщение не будет удалено. Я хочу, чтобы публикация автоматически удалялась из базы данных по истечении времени истечения независимо от того, какой деятельностью будет заниматься пользователь. Есть ли способ, которым я могу обойти это? Ниже приведен снимок моей базы данных и кодов, используемых для извлечения данных из моей базы данных в активность на моей домашней странице и в отдельном сообщении
База данных
Действия на домашней странице
@Override
protected void onStart() {
super.onStart();
mAuth.addAuthStateListener(mAuthListener);
final String key = "";
Query query = FirebaseDatabase.getInstance().getReference("Posts").limitToLast(50);
FirebaseRecyclerOptions<Post> options = new FirebaseRecyclerOptions.Builder<Post>().setQuery(query,Post.class).build();
FirebaseRecyclerAdapter adapter = new FirebaseRecyclerAdapter<Post, PostViewHolder>(options){
@Override
public PostViewHolder onCreateViewHolder(ViewGroup parent, int viewType){
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.post_row,parent,false);
return new PostViewHolder(view);
}
@Override
protected void onBindViewHolder(PostViewHolder holder, int position, Post model){
final String post_key = getRef(position).getKey();
holder.setLocation("Location: " + model.getLocation());
holder.set_foodAvailable("Food Available: " + model.getFood_Available());
holder.setImage(model.getImage());
holder.set_foodExpiry("Food Expires At: " + model.getFood_Expiry() + "hrs");
holder.setCounter("Interested Parties: " + model.getCounter());
holder.setUsername("Posted by: " + model.getUsername());
holder.mView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Toast.makeText(MainActivity.this,post_key, Toast.LENGTH_SHORT).show();
Intent singlePostIntent = new Intent(HomeActivity.this, SingleActivity.class);
singlePostIntent.putExtra("post_id", post_key);
startActivity(singlePostIntent);
((SimpleItemAnimator) mPostList.getItemAnimator()).setSupportsChangeAnimations(false);
}
});
if(key == post_key){
mDatabaseTest = mDatabase.child(key);
mDatabaseTest.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
String expiry = (String) dataSnapshot.child("Food_Expiry").getValue();
SimpleDateFormat format = new SimpleDateFormat("HH:mm", Locale.ENGLISH);
try {
Date currentDate = format.parse(time);
Date expiryDate = format.parse(expiry);
assert currentDate != null;
if(!currentDate.before(expiryDate) || currentDate.after(expiryDate)){
mDatabaseTest.removeValue();
}
} catch (ParseException e) {
e.printStackTrace();
}
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
}
};
adapter.startListening();
mPostList.setAdapter(adapter);
}
Активность одного сообщения
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_single);
mSingleImage = findViewById(R.id.single_image);
mSingleEventName = findViewById(R.id.single_eventName);
mSingleLocation = findViewById(R.id.single_Location);
mSingleMoreDetails = findViewById(R.id.single_moreDetails);
mSingleFoodAvailable = findViewById(R.id.single_foodAvailable);
mSingleDietaryOptions = findViewById(R.id.single_dietaryOptions);
mSingleEstimatedPaxAvailability = findViewById(R.id.single_estimatedPaxAvailability);
mSingleFoodExpiry = findViewById(R.id.single_foodExpiry);
removeBtn = findViewById(R.id.removeButton);
mSingleUsername = findViewById(R.id.single_username);
mCounterView = findViewById(R.id.single_counter);
counterBtn = findViewById(R.id.counterButton);
mDatabaseTest = FirebaseDatabase.getInstance().getReference();
mDatabase = FirebaseDatabase.getInstance().getReference().child("Posts");
mAuth = FirebaseAuth.getInstance();
mPost_key = getIntent().getExtras().getString("post_id");
//Values that you want to retrieve
mDatabase.child(mPost_key).addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
String post_uid = (String) dataSnapshot.child("Uid").getValue();
String post_image = (String) dataSnapshot.child("Image").getValue();
String post_eventName = (String) dataSnapshot.child("Event_Name").getValue();
String post_location = (String) dataSnapshot.child("Location").getValue();
String post_moreDetails = (String) dataSnapshot.child("More_Details_On_Location").getValue();
String post_foodAvailable = (String) dataSnapshot.child("Food_Available").getValue();
String post_username = (String) dataSnapshot.child("Username").getValue();
post_click = (String) dataSnapshot.child("Clicked").getValue();
post_counter = (String) dataSnapshot.child("Counter").getValue();
mCounterView.setText("Interested Parties: " + post_counter);
ArrayList<String> names = new ArrayList<String>();
StringBuffer sb = new StringBuffer();
for(DataSnapshot s : dataSnapshot.child("Dietary_Options").getChildren()){
names.add(s.getValue().toString());
}
Log.d("tag","value" + names.size());
for(String a : names) {
sb.append(a);
sb.append(", ");
}
String str = sb.toString();
str = str.replaceAll(", $", "");
mSingleDietaryOptions.setText("Dietary Options: " + str);
String post_estimatedPaxAvailability = (String) dataSnapshot.child("Estimated_Pax_Availability").getValue();
String post_foodExpiry = (String) dataSnapshot.child("Food_Expiry").getValue();
mSingleEventName.setText("Event Name: " + post_eventName);
mSingleLocation.setText("Location: " + post_location);
mSingleMoreDetails.setText("More Details On Location: " + post_moreDetails);
mSingleFoodAvailable.setText("Food Available: " + post_foodAvailable);
mSingleEstimatedPaxAvailability.setText("Estimated Pax Available: " + post_estimatedPaxAvailability);
mSingleFoodExpiry.setText("Food Expires At: " + post_foodExpiry + "hrs");
mSingleUsername.setText("Posted By: " + post_username);
Picasso.get().load(post_image).into(mSingleImage);
if(mAuth.getCurrentUser().getUid().equals(post_uid)){
removeBtn.setVisibility(View.VISIBLE); //check that only user that post the location can remove the post
}
ArrayList<String> users = new ArrayList<String>();
for(DataSnapshot a : dataSnapshot.child("Users_Interested").getChildren()){
users.add(a.getValue().toString());
}
Calendar calendar = Calendar.getInstance();
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("HH:mm");
final String time = simpleDateFormat.format(calendar.getTime());
if(time.equals(post_foodExpiry)){
mDatabase.child(mPost_key).removeValue();
}
//check to see if current user has already clicked the button
if(mAuth.getCurrentUser().getUid().equals(post_click) || users.contains(mAuth.getCurrentUser().getUid())){
counterBtn.setEnabled(false);
counterBtn.setText("Confirmed!");
Log.i("testing",mPost_key);
}
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
counterBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showAlertDialog();
}
});
removeBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mDatabase.child(mPost_key).removeValue();
Intent mainIntent = new Intent(SingleActivity.this, HomeActivity.class);
startActivity(mainIntent);
}
});
}