运行中提示框

LongTimeDialog dialog = UITools.getDialog(this);                dialog.setTitle("正在加载数据...");                dialog.setLongTimeTask(new ILongTimeTask() {                        public Object exec() throws Exception {                                //需要执行的代码                                return "SUCCESS";                        }                        public void afterExec(Object res) throws Exception {                        }                });                dialog.show();

?