How to Retrieve a List object from the firebase in android

Question

I am having trouble retrieving a List from the Firebase. I have no trouble storing it, but as soon as I try to cast dataSnapshot.getValue() to ArrayList my app crashes, givi

Answer 1

Make another item that contains a list for your item: This is your item:

class TaskDes { // definition
    boolean done
    String taskDescription
    String taskTitle
}

This is the list item

        class TaskDesList { // definition
              private  ArreyList yourlist
            }

      public TaskDesList(){
         }

        public ArrayList getYourlist() {
            return yourlist;
        }

and when calling an EventListener

ref.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                yourlist.clear();
             taskDesList=dataSnapshot.getValue(TaskDesList.class);
                if (taskDesList!=null) {
                    yourlist= taskDesList.getYourlist();
                }
}

and now "yourlist" is a list that contains all of your "TaskDes" items