java - Firebase Firestore : How to convert document object to a POJO on Android

Question

使用实时数据库，可以做到这一点:

MyPojo pojo  = dataSnapshot.getValue(MyPojo.Class);

作为一种映射对象的方法，如何使用 Firestore 来实现这一点？

代码:

FirebaseFirestore db = FirebaseFirestore.getInstance();
        db.collection("app/users/" + uid).document("notifications").get().addOnCompleteListener(task -> {
            if (task.isSuccessful()) {
                DocumentSnapshot document = task.getResult();
                if (document != null) {
                    NotifPojo notifPojo = document....// here
                    return;
                }

            } else {
                Log.d("FragNotif", "get failed with ", task.getException());
            }
        });

Answer 1

使用 DocumentSnapshot 您可以:

DocumentSnapshot document = future.get();
if (document.exists()) {
    // convert document to POJO
    NotifPojo notifPojo = document.toObject(NotifPojo.class);
}