我如何才能像事件一样使用 Firebase 访问 DataSnapshot，只有没有事件？ 所以我只想从孩子那里读出数据

Question

How can I access DataSnapshot with Firebase like an event, only without an event? So I just want to read out data. But in the form of the data snapshot

So in the app I access with mFirebaseRef.addListenerForSingleValueEvent(new ValueEventListener() { @Override public void onDataChange(DataSnapshot dataSnapshot) {... } to the database. But if I want to read out data when starting the app, I don't have the functions from the above example.

Answer 1

Use get()

Comment from Jay: I think you're asking how to Read Data Once which uses get() and does not throw an event. was right