Btukfyl

I am trying find the match of right node in my Firebase database and save the values to SharedPreferences. I iterate through each node in Firebase with a ValueEventListener. But when I try to print out the values I have just put into the SharedPreferences, it shows null for all fields.

I have already checked to see if there is an exception by checking the value of commit(), but it returns true.

I have also thought maybe it was the thread finishing its task at a later time, so I made a runnable inside the foreach loop and made synchronous tasks. The first one saved the values to SharedPreferences, the next printed the values. But that also did not work.

I also thought it may be a problem with inconsistent contexts but 'sharedpref' and 'editor' both use the same activity context. And I have had no problems accessing the data I want in other activities.

Here is where I iterate through my Firebase nodes:

final String name = et_name.getText().toString();

DatabaseReference rootref = FirebaseDatabase.getInstance().getReference();

rootref.child("drivers_" + sharedPref.getString("frat_code", null))

    .orderByChild("first_name")

    .addListenerForSingleValueEvent(new ValueEventListener() {

        @Override

        public void onDataChange(@NonNull DataSnapshot dataSnapshot) {

            boolean found = false;

            iterateFirebase:

            for(DataSnapshot node: dataSnapshot.getChildren()) {

                Driver driver = node.getValue(Driver.class);

                if((driver.getName() != null) && (driver.getName().equals(name))) {

                    found = true;

                    editor.putString(driver.getName(), "name");

                    editor.putString(driver.getOccupants(), "occupants");

                    editor.putString(driver.getPhone(), "phone");

                    editor.putString(driver.getMake(), "make");

                    editor.putBoolean("isLogged", true);

                    editor.apply();

                    Log.d(TAG, "Values retrieved from Firebase node: " +

                        driver.getName() + ", " + driver.getOccupants() +

                        ", " + driver.getMake() + ", " +

                        driver.getPhone());

                    Log.i(TAG, "Following user logged in: " +

                        sharedPref.getString("name", null) + ", " +

                        sharedPref.getString("occupants", null) +

                        ", " + sharedPref.getString("phone", null) +

                        ", " + sharedPref.getString("make", null) +

                        ", " + sharedPref.getBoolean("isLogged",

                            false));

                    Intent intent = new Intent(IfYes.this,

                        MainActivity.class);

                    IfYes.this.startActivity(intent);

                    break iterateFirebase;

                }

            }

Here are the logs for the above log statements:

Values retrieved from Firebase node: John Smith, 4, Honda Civic, Black, 

+11234567890

Following user logged in: null, null, null, null, true

Thanks in advance for the help. Also I am still a beginner so any code style critiques would be appreciated if anything stands out.

Notice:

editor.putString(driver.getName(), "name");

editor.putString(driver.getOccupants(), "occupants");

editor.putString(driver.getPhone(), "phone");

editor.putString(driver.getMake(), "make");

should be:

editor.putString("name", driver.getName());

editor.putString("occupants", driver.getOccupants());

editor.putString("phone", driver.getPhone());

editor.putString("make", driver.getMake());