错误：ANDROID
W/SyncTree: Listen at /Leaders/JdGreJBImwYBPGrWHAeyEWBoWE73/Sample Group/REQUESTS failed: DatabaseError: Permission denied
我有一个类（Fragment）访问它：
public class AdminRequestsFragment extends Fragment {
public FirebaseAuth.AuthStateListener AuthListener;
DatabaseReference leadRef = FirebaseDatabase.getInstance().getReference().child("Leaders");
DatabaseReference groupRef;
private static String nameOfGroupSelected;
HashMap<String, String> userMap = new HashMap<>();
private static final String ARG_PARAM1 = "param1";
TextView noReqField;
private static final String ARG_PARAM2 = "param2";
ArrayAdapter adapter;
ArrayList<String> namesofRequests = new ArrayList<>();
String uid;
private OnFragmentInteractionListener mListener;
ListView lview;
public AdminRequestsFragment() {
// Required empty public constructor
}
public static AdminRequestsFragment newInstance(String param1, String param2) {
AdminRequestsFragment fragment = new AdminRequestsFragment();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
Bundle bundle = this.getArguments();
if (bundle != null) {
nameOfGroupSelected = (String) bundle.getSerializable("DBREFGROUP");
}
AuthListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
final FirebaseUser user = firebaseAuth.getCurrentUser();
if (user != null) {
uid = user.getUid().toString();
groupRef = leadRef.child(uid).child(nameOfGroupSelected).child("REQUESTS");
groupRef.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
for(DataSnapshot d: dataSnapshot.getChildren()) {
if (d.getKey().equals("FakeReq")) {
//wont add to list
} else {
namesofRequests.add(d.getValue().toString()); //Adds disp names not UIDS
userMap.put(d.getValue().toString(), d.getKey().toString());
}
}
onPost();
}
public void onPost(){
if(namesofRequests.size() == 0){
noReqField.setVisibility(View.VISIBLE);
} else {
adapter = new ArrayAdapter<String>(getContext(), android.R.layout.simple_list_item_1, namesofRequests);
lview.setAdapter(adapter);
lview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// Toast.makeText(getApplicationContext(), "# " + arrayList.get(position), Toast.LENGTH_SHORT).show();
String key = namesofRequests.get(position); //name of the person who was selected.
//Log.i("", itemClicked);
String uidOfPicked = userMap.get(key);
System.out.println("Request selected was " + uidOfPicked + " " + key);
Fragment goToAdminPanel = new AdminDecideRequestOutcomeFragment();
Bundle bundle = new Bundle(); //Create a bundle.
bundle.putSerializable("DBREFGROUP", nameOfGroupSelected); //send DB Ref String to Fragment
bundle.putSerializable("DBUIDOFREQUESTER", uidOfPicked);
bundle.putSerializable("DBNAMEOFREQUESTER", key);
goToAdminPanel.setArguments(bundle);
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.flContent, goToAdminPanel).addToBackStack(null)//flcontent is the FrameLayout in
// Main Activity class (the main holder of the frags)
.commit(); //Replace old frag (findpplfrag) with the (someonegotclickedonfrag) (frag->frag)]
}
});
}
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
} else {
Log.i("Problem:", "User wasn't logged in.");
}
}
};
FirebaseAuth.getInstance().addAuthStateListener(AuthListener);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_admin_requests, container, false);
lview = (ListView) v.findViewById(R.id.lview);
noReqField = (TextView) v.findViewById(R.id.EmailField);
noReqField.setVisibility(View.INVISIBLE);
return v;
}
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
public interface OnFragmentInteractionListener {
void onFragmentInteraction(Uri uri);
}
}
规则：
{
"rules": {
"Names":{
".read": "auth != null" ,
".write": "auth != null"
},
"Leaders":{
"$leaderuid": {
".write": "$leaderuid == auth.uid",
".read": "$leaderuid == auth.uid",
"INVOLVEDIN":{
".read": "auth != null",
".write": "auth != null"
},
"OWNEDGROUPS":{
".read": "auth != null",
".write": "auth != null"
},
"USERPROFILE":{
".read": "auth != null"
},
"$groupname":{
"GROUPNAME":{
".read": "auth != null"
},
"REQUESTS":{
".read": "$leaderuid == auth.uid",
".write": "auth != null"
},
"DATA": {
".write": "data.parent().child('ALLOWED').child(auth.uid).exists()",
".read": "data.parent().child('ALLOWED').child(auth.uid).exists()"
},
"BLACKLIST":{
".read": "auth != null",
".write": "$leaderuid == auth.uid"
}
}
}
}
}
}
数据库正在构建
{
"Leaders" : {
"JdGreJBImwYBPGrWHAeyEWBoWE73" : {
"INVOLVEDIN" : {
"Sample Group" : "Sample Group"
},
"OWNEDGROUPS" : {
"Sample Group" : "Sample Group"
},
"Sample Group" : {
"ALLOWED" : {
"Child1" : "",
"Jjd4n6Ti2wg8qwnCKIQfWVLUb5Z2" : "A6"
},
"BLACKLIST" : {
"Child2" : ""
},
"DATA" : {
"Data" : "Fake data content"
},
"REQUESTS" : {
"FakeReq" : "",
"Uq9D8YBtxYTMUphBGOmGwxCufiV2" : "A7"
}
},
"USERPROFILE" : {
"DISPNAME" : "A5"
}
},
"Jjd4n6Ti2wg8qwnCKIQfWVLUb5Z2" : {
"INVOLVEDIN" : {
"Sample Group" : "Sample Group"
},
"OWNEDGROUPS" : {
"Sample Group" : "Sample Group"
},
"Sample Group" : {
"ALLOWED" : {
"Child1" : "",
"JdGreJBImwYBPGrWHAeyEWBoWE73" : "A5"
},
"BLACKLIST" : {
"Child2" : ""
},
"DATA" : {
"Data" : "Fake data content"
},
"REQUESTS" : {
"FakeReq" : "",
"Uq9D8YBtxYTMUphBGOmGwxCufiV2" : "A7"
}
},
"USERPROFILE" : {
"DISPNAME" : "A6"
}
},
"Uq9D8YBtxYTMUphBGOmGwxCufiV2" : {
"INVOLVEDIN" : {
"Sample Group" : "Sample Group"
},
"OWNEDGROUPS" : {
"Sample Group" : "Sample Group"
},
"Sample Group" : {
"ALLOWED" : {
"Child1" : ""
},
"BLACKLIST" : {
"Child2" : ""
},
"DATA" : {
"Data" : "Fake data content"
},
"REQUESTS" : {
"FakeReq" : ""
}
},
"USERPROFILE" : {
"DISPNAME" : "A7"
}
}
},
"Names" : {
"JdGreJBImwYBPGrWHAeyEWBoWE73" : "A5",
"Jjd4n6Ti2wg8qwnCKIQfWVLUb5Z2" : "A6",
"Uq9D8YBtxYTMUphBGOmGwxCufiV2" : "A7"
}
}
我在另一个活动中以主登录方式单独登录用户。
问题：Firebase的功能真的很有趣。有时我没有得到这个错误，一切都完全正常其他时候像这样，我在顶部得到这个错误，我不明白为什么？问题是什么？为什么会发生有时而不是其他？
感谢。
修改
用户已登录是否拥有UID： JdGreJBImwYBPGrWHAeyEWBoWE73