Class java.util.Map has generic type parameters, please use GenericTypeIndicator instead

Question

I am using firebase to retrieve data from database n use

Map map = dataSnapshot.getValue(Map.class);

to get values, but it

Answer 1

You need to use the getCheldrin as follows

for (DataSnapshot snapshotNode: dataSnapshot.getChildren()) {
    map.put(snapshotNode.getKey(), snapshotNode.getValue(YOUR_CLASS_TYPE.class));
}

Replace the YOUR_CLASS_TYPE with the class type you expecting. notice that this class must have an empty constructor.