Android refreshing adapter work after rotation again device

Question

This code works fine when i add some data into \'List model\' and restore saved data on rotation device, unfortunately after restore data and set that to model

Answer 1

The main reason is that, because you called set-data and that method did not immediately notify that the data set was changed, therefore it was not ware.

      public void setData(List data) {
            Log.e("data size ", data.size() + "");
            list.clear();
            list.addAll(data);
        }

     public void setData(List data) {
            Log.e("data size ", data.size() + "");

            list.clear();
            notifyDataSetChanged(); //here,to signal change occurred.
            list.addAll(data);
            notifyDataSetChanged(); //here,to signal change occurred.

        }

should probably get into the habit of notifying changes on the spot.

The main problem is this, you never notified the changes you made, you cleared it , but you never told it, you know, bu the adapter does not know, also you inserted fresh data with addAll but you still did not notify it.