@Override
 public void onClick(View v) {
   if (isFormValid()) {
     switch (v.getId()) {
       case R.id.bt_add:
         CalendarSmallApp.this.createEvent();
         Toast.makeText(this, this.sumUpEvent(), Toast.LENGTH_LONG).show();
         CalendarSmallApp.this.finish();
         break;
       case R.id.bt_add_show:
         EventBuilder eventBuilder = CalendarSmallApp.this.createEvent();
         if (eventBuilder != null) {
           eventBuilder.showEvent();
         }
         CalendarSmallApp.this.finish();
         break;
       default:
         break;
     }
   }
 }