Detect write errors in Firebase Realtime Database in Android

Detect write errors in Firebase Realtime Database in Android.java

// To detect when a write operation is rejected by your Realtime Database
// security rules, add a completion listener to the `setValue()` call and 
// throw the exception if the task failed.
val ref = FirebaseDatabase.getInstance().getReference()
ref.push()
    .setValue(ServerValue.TIMESTAMP)
    .addOnCompleteListener(new CompletionListener() {
      @Override
      public void onComplete(Task<Void> task) {
        Log.i("firebase", String.valueOf(task.isSuccessful()))
        if (!task.isSuccessful()) {
            Log.i("firebase", "Throwing exception")
            throw new RuntimeException(task.getException());
        }
    }

Detect write errors in Firebase Realtime Database in Android.kt

// To detect when a write operation is rejected by your Realtime Database
// security rules, add a completion listener to the `setValue()` call and 
// throw the exception if the task failed.
val ref = FirebaseDatabase.getInstance().reference
ref.push()
    .setValue(ServerValue.TIMESTAMP)
    .addOnCompleteListener { task ->
        Log.i("firebase", task.isSuccessful.toString())
        if (!task.isSuccessful) {
            throw task.exception!!
        }
    }