[英]Query in Firebase database child
请参阅Users/Driver
并遍历子项,您将获得密钥:
DatabaseReference mDatabase = FirebaseDatabase.getInstance().getReference().child("Users").child("Driver");
ValueEventListener listener = new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
//loop through the children
for(DataSnapshot ds: dataSnapshot.getChildren()){
//get the key or keys depending on how many keys
String underLinedKey = ds.getKey();
}
}
@Override
public void onCancelled(DatabaseError databaseError) {
//log error
Log.w(TAG, "loadPost:onCancelled", databaseError.toException());
}
};
mDatabase.addValueEventListener(listener);
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