@Override
            public void onRefreshBegin(final PtrFrameLayout frame) {
                frame.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        frame.refreshComplete();
                    }
                }, 2000);
            }
using a string, support: A-Z 0-9 - .
you can add more letters by {@link in.srain.cube.views.ptr.header.StoreHousePath#addChar}
ptr-demo/src/in/srain/cube/views/ptr/demo/ui/storehouse/StoreHouseUsingString.java