Firebase Query don't show all the data
Clash Royale CLAN TAG#URR8PPPFirebase Query don't show all the data
I need to get all users of a determined age range, but my code does not work.
My Firebase database structure is this.
-user
-1
-name:"James"
-age:"21"
-2
-name:"Artur"
-age:"25"
-3
-name:"Charlotte"
-age:"25"
-3
-name:"Marvin"
-age:"80"
My code is this. With this I just catch 1 user.
DatabaseReference uRef = database.getReference("users");
Query UserQuery = uRef.orderByChild("age").startAt(21).endAt(50);
UserQuery.limitToFirst(10).addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
int counter =(int) dataSnapshot.getChildrenCount();
Log.d("TAG////////", String.valueOf(counter));
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
But if I delete the endAt() condition, I catch all users after 21 and I just wanna catch the users in the range.
DatabaseReference uRef = database.getReference("users");
Query UserQuery = uRef.orderByChild("age").startAt(21); //I deleted endAt(50);
UserQuery.limitToFirst(10).addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
int counter =(int) dataSnapshot.getChildrenCount();
Log.d("TAG////////", String.valueOf(counter));
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
Please help me.
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