public static void startactivity(final Context ctx, final @IdRes int id) {
   final int g = FastBinding.values().length;
   for (int i = 0; i < g; i++) {
     FastBinding bind = FastBinding.values()[i];
     if (bind.getId() == id) {
       Intent intent = new Intent(ctx, bind.getClassName());
       ctx.startActivity(intent);
       return;
     }
   }
 }
 @Override
 public boolean onOptionsItemSelected(MenuItem item) {
   FastBinding.startactivity(this, item.getItemId());
   return super.onOptionsItemSelected(item);
 }