CODEWITHSUNDEEP
javaandroidfirebasefirebase-realtime-databasetimestamp
Amazonian pet
Amazonian pet

Reputation: 47

FireBase TIMESTAMP undesirably updates

My idea is to allow a user add things in his userlist. When user clicks checkbox, it creates an item with data in FireBase database (I want to sort the user list in the future by the time).

enter image description here enter image description here

I do so by the following code:

favCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
                if(b){
                    //Add item
                    favMap.put("comicsId", comicsId);
                    favMap.put("comicsGenreId", comicsGenreId);
                    favMap.put("comicsTitle", comicsTitle);
                    favMap.put("time", ServerValue.TIMESTAMP);
                    favListRef.setValue(favMap);
                }
                if(!b){
                    //Remove item
                    favListRef.removeValue();
                }
            }
        });

And to make checkBox be checked (if user has already added item before) I use the code:

//Check if already added
        favListRef.addListenerForSingleValueEvent(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                for (DataSnapshot dataSnapshot1 : dataSnapshot.getChildren()){
                    if(dataSnapshot1.getValue() != null && !dataSnapshot1.getValue().equals("")){
                        //Item already added set as checked
                        favCheckBox.setChecked(true);
                    }
                }
            }

            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) { }
        });

So everything is fine except for every time when the "checker" code finds out that an item has already added it sets the checkbox as checked and then time in database updates (that ruins my idea of sorting by time).

How can I implement the "TIMESTEAMP" idea with FireBase database and not update time after every check?

Would like to see your answers and pieces of advice. Thanks in advance.

Upvotes: 0

Views: 90

Answers (1)

Amazonian pet
Amazonian pet

Reputation: 47

Thanks to Andy.

To handle the issue I made items adding and removing by onClickListener :

boolean checkBoxChecked;
...
//ClickListener
        favCheckBox.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if(checkBoxChecked){
                    //Remove item
                    favListRef.removeValue();
                    checkBoxChecked = !favCheckBox.isChecked();//false
                }
                if(!checkBoxChecked){
                    //Add item
                    favMap.put("comicsId", comicsId);
                    favMap.put("comicsGenreId", comicsGenreId);
                    favMap.put("comicsTitle", comicsTitle);
                    favMap.put("time", ServerValue.TIMESTAMP);
                    favListRef.setValue(favMap);
                    checkBoxChecked = favCheckBox.isChecked();//true
                }
            }
        });

        //Check if user already added item
        favListRef.addListenerForSingleValueEvent(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                for (DataSnapshot dataSnapshot1 : dataSnapshot.getChildren()){
                    if(dataSnapshot1.getValue() != null && !dataSnapshot1.getValue().equals("")){
                        //Item was added
                        favCheckBox.setChecked(true);
                        checkBoxChecked = favCheckBox.isChecked();//true
                    }
                }
            }

            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) { }
        });

TIMESTAMP changes only when user clicks on checkBox.

Upvotes: 1

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