Whenever a condition is met, I do not want to navigate between fragments-CodePudding

Sorry for the bad title, I wasn't sure how to express the situation, so I wrote it this way.

I recently asked a question about firebase I am unable to getValue() from a child in Firebase

I wanted to show a toast whenever the provided string matches a string in the firebase node. However, when I press the button after entering the text, it displays the toast message, which is what I wanted, but I don't want to navigate to the next fragment.

here is my code

nextBtn.setOnClickListener(view1 -> {
            Query query = userOneRef.orderByChild("AmazonLink").equalTo(amazonLink.getText().toString());
            query.get().addOnCompleteListener(task -> {
                if (task.isSuccessful()) {
                    for (DataSnapshot ds : task.getResult().getChildren()) {
                        String amazonLink = ds.child("AmazonLink").getValue(String.class);
                        Toast.makeText(getActivity(), "Amazon link already on tracker",
                                Toast.LENGTH_LONG).show();
                        Log.d("TAG", amazonLink);
                        Log.d("TAG","Testing1");
                    }
                    if (TextUtils.isEmpty(amazonLink.getText().toString())){
                        Toast.makeText(getActivity(), "Empty field not allowed!",
                                Toast.LENGTH_LONG).show();
                        Log.d("TAG","Testing2");

                    }
                    else {
                        Log.d("TAG","Testing3");
                        Bundle amazonLinkBundle = new Bundle();
                        amazonLinkBundle.putString("passingLink",amazonLink.getText().toString());
                        getParentFragmentManager().setFragmentResult("gettingLink",amazonLinkBundle );
                        Fragment fragment = new FinalHome_Fragment();
                        FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
                        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
                        fragmentTransaction.replace(R.id.fragment_container, fragment);
                        fragmentTransaction.addToBackStack(String.valueOf(Home_Fragment.class));
                        fragmentTransaction.commit();
                    }
                } else {
                    Log.d("TAG", task.getException().getMessage()); //Never ignore potential errors!
                }
            });





        });

CodePudding user response：

Considering this is the part you are referring to:

for (DataSnapshot ds : task.getResult().getChildren()) {
                        String amazonLink = ds.child("AmazonLink").getValue(String.class);
                        Toast.makeText(getActivity(), "Amazon link already on tracker",
                                Toast.LENGTH_LONG).show();
                        Log.d("TAG", amazonLink);
                        Log.d("TAG","Testing1");
                    }

I'd change it to:

boolean isFound = false;
for (DataSnapshot ds : task.getResult().getChildren()) {
                        String amazonLink = ds.child("AmazonLink").getValue(String.class);
                        Toast.makeText(getActivity(), "Amazon link already on tracker",
                                Toast.LENGTH_LONG).show();
                        Log.d("TAG", amazonLink);
                        Log.d("TAG","Testing1");
isFound = true;
                    }
if(isFound)
     return;

something of the sort of this, if that is what you were missing