Firebase getValue() 没有正确检索布尔值？

Question

我在使用 firebase 调用时遇到问题，我想比较该值是真还是假。这是我的尝试：

   Firebase followingRef = currentUserPath.child("/following");
   followingRef.addChildEventListener(new ChildEventListener() {
        @Override
        public void onChildAdded(final DataSnapshot dataSnapshot, String s) {
            firebaseRef.child("people/" + dataSnapshot.getKey()).addListenerForSingleValueEvent(new ValueEventListener() {
                @Override
                public void onDataChange(DataSnapshot snapshot) {
                    Boolean isFollowing = (Boolean) dataSnapshot.getValue();
                    if(isFolloiwng) {
                        User user = snapshot.getValue(User.class);
                        user.setUserId(dataSnapshot.getKey());
                        application.getFollowingRecyclerViewAdapter().add(user, application.getFollowingRecyclerViewAdapter());
                    }
                }

                @Override
                public void onCancelled(FirebaseError firebaseError) {

                }
            });
        }
    ...//OnChildChanged,Moved,etc... no code in here

在我想要引用的路径中，currentUserPath.child("following");它看起来像这样：

编辑：用实际的 JSON 替换图片：

 "users" : {
    "10206287838487450" : {
      "following" : {
        "10208425049208936" : true,
        "107214969710378" : false,
        "1789986447904975" : true
      },
      "id" : "ae80f030-dea0-4909-944f-0e490847b6ab",
      "name" : "Stephen",
      "posts" : {
        "-KN_oJAgTNJHwJbqY3qk" : true,
        "-KN_oN9_Xmw5ULnBRYM7" : true,
        "-KN_obYGug9Tdrzufbqc" : true,
        "-KNefMk2nX0sOsUx0btx" : true
      },
      "userId" : "10206287838487450"
    },

  "people" : {
    "10206287838487450" : {
      "id" : "9e7ee838-a60a-4588-bc1c-93b98f74356d",
      "name" : "Bob",
      "userId" : "10206287838487450"
    },
    "10208425049208936" : {
      "id" : "fe6f97e3-0efb-4afb-a322-a1c586f75fb7",
      "name" : "Jack",
      "userId" : "10208425049208936"
    },
    "107214969710378" : {
      "id" : "ae80f030-dea0-4909-944f-0e490847b6ab",
      "name" : "Rick",
      "userId" : "107214969710378"
    },
    "108421236267392" : {
      "id" : "c72b35d9-380b-4552-8b05-7426d378fa14",
      "name" : "Tommy",
      "userId" : "108421236267392"
    },
    "1112460595485164" : {
      "id" : "383692f0-0aba-4d29-afb8-80beefe678c6",
      "name" : "Stanley",
      "userId" : "1112460595485164"
    },
    "1789986447904975" : {
      "id" : "1ae43255-c040-4b1e-959e-fcdf03e13a45",
      "name" : "Link",
      "userId" : "1789986447904975"
    }
  },

我很困惑，因为每次我尝试将dataSnapshot.getValue()转换为布尔值时，我总是得到isFollowing = true这显然是不正确的，因为在我的数据中，只有 2 个值是正确的，如上所示，而不是全部 3 个。令人困惑的是为什么我无法Boolean正确检索。我也尝试过，Boolean isFollowing = (Boolean) dataSnapshot.getValue(Boolean.class)但这不起作用。Firebase 文档说，在检索数据时， aBoolean可以是我们可以检索的一种数据类型，但我似乎无法正确检索它。任何帮助，将不胜感激。谢谢！

Answer 1

对我有用：

    Firebase ref = new Firebase("https://stackoverflow.firebaseio.com/38671701/users");
    Firebase currentUserPath = ref.child("10206287838487450");
    Firebase firebaseRef = ref.child("10206287838487450");
    Firebase followingRef = currentUserPath.child("/following");
    System.out.println("Listening for children on "+followingRef);
    followingRef.addChildEventListener(new ChildEventListenerBase() {
               @Override
               public void onChildAdded(final DataSnapshot dataSnapshot, String s) {
                   firebaseRef.child("people/" + dataSnapshot.getKey()).addListenerForSingleValueEvent(new ValueEventListener() {
                       @Override
                       public void onDataChange(DataSnapshot snapshot) {
                           Boolean isFollowing = (Boolean) dataSnapshot.getValue();
                           System.out.println(dataSnapshot.getKey()+"="+isFollowing);
                       }

                       @Override
                       public void onCancelled(FirebaseError firebaseError) {

                       }
                   });
               }
     });

在https://stackoverflow.firebaseio.com/38671701/users/10206287838487450/following上聆听儿童

10208425049208936=真

107214969710378=假

1789986447904975=真