Question

我正在尝试查询我的Google Firestore数据库以检索userUID字段=当前用户的数据。众所周知，我已经对userUID进行了硬编码，尽管对于任何登录的用户，它都必须更改为唯一。我的代码如下：

   public void viewMyAttendance(View v) {

    attendanceRef3.whereEqualTo("userUID", "rJe547HwBrWFWa90zVdUl6PYfo03")//("userUID", FirebaseAuth.getInstance().getCurrentUser())
            .get().addOnSuccessListener(new OnSuccessListener<QuerySnapshot>() {
        @Override
        public void onSuccess(QuerySnapshot queryDocumentSnapshots) {
            String data = "";

            for (QueryDocumentSnapshot documentSnapshot : queryDocumentSnapshots) {
                Attendance attendance = documentSnapshot.toObject(Attendance.class);
                //attendance.setDocumentID(documentSnapshot.getId());

                //Session session = documentSnapshot.toObject(Session.class);

                String sessionID = attendance.getSessionID();
                String studentID = attendance.getUserUID();
                //String documentID = session.getDocumentID();

                data += "Session ID: " + sessionID + "\n" + "User UID: " + studentID + "\n\n";
            }
            textViewData.setText(data);
        }
    });
}

Answer 1

当前，我已经为一个用户进行了硬编码的userUID，我希望每个登录的用户都可以更改它

要解决此问题，您需要使用Firebase Authentication，以便像这样从uid对象获取FirebaseUser：

String uid = FirebaseAuth.getInstance().getCurrentUser().getUid();

尝试查询我的Firestore数据库以检索结果，其中字段=当前用户userUID

1 个答案: