How to add data to Realtime Database?

Question

I'm just wanna create an account with some data. Unfortunately, I do not know where the error is, and during registration, the account is created but the data is not saved in the Realtime Database.

mAuth.createUserWithEmailAndPassword(email, password).addOnCompleteListener(task -> {
    if (task.isSuccessful()) {
        FirebaseUser user = mAuth.getCurrentUser();
        reference = FirebaseDatabase.getInstance().getReference("Users").child(user.getUid());

        HashMap<String, Object> hashMap = new HashMap<>();
        hashMap.put("username", username);
        hashMap.put("email", email);
        hashMap.put("id", user.getUid());
        hashMap.put("imageURL", "default");
        hashMap.put("status", "offline");

        reference.setValue(hashMap).addOnCompleteListener(task1 -> {
            if (task1.isSuccessful()) {
                Toast.makeText(RegisterActivity.this, "Registered Successfully", Toast.LENGTH_SHORT).show();
                startActivity(new Intent(RegisterActivity.this, StartActivity.class).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK));
            }else{
                Toast.makeText(RegisterActivity.this, "Registered Failed", Toast.LENGTH_SHORT).show();
            }
        });
    }
});

score 2 · Answer 1 · answered Nov 20 '21 at 19:59

When a Task fails, it has an exception in it that contains details about what failed. Log the exception to find the root cause of the problem:

reference.setValue(hashMap).addOnCompleteListener(task1 -> {
    if (task1.isSuccessful()) {
        Toast.makeText(RegisterActivity.this, "Registered Successfully", Toast.LENGTH_SHORT).show();
        startActivity(new Intent(RegisterActivity.this, StartActivity.class).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK));
    }else{
        Toast.makeText(RegisterActivity.this, "Registered Failed", Toast.LENGTH_SHORT).show();
        Log.e("FIREBASE", "Registering user in database failed", task.getException()); // 
    }
});

Once you get the exception, try to address what it says, or search for the error message to see if somebody else had the same problem before.

You might want to check your app's logcat output for relevant messages in that case. For example: https://stackoverflow.com/questions/68806876/firebase-realtime-database-connection-killed-different-region. If none of that is the case, [enabling debug logging](https://firebase.google.com/docs/reference/android/com/google/firebase/database/FirebaseDatabase.html#setLogLevel(com.google.firebase.database.Logger.Level)) might allow you to see more on the cause of the problem. — Frank van Puffelen, Nov 20 '21 at 20:41

How to add data to Realtime Database?

1 Answers1