@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
mDialog.dismiss();
// Alert if list is null.
if (courses.size() == 0) {
AlertDialog.Builder builder = new AlertDialog.Builder(SelectListActivity.this);
builder.setTitle("Error");
builder.setMessage("You don't have course or internet invalid.");
builder.setPositiveButton("我知道了", null);
builder.show();
} else {
// findViewById(android.R.id.empty).setVisibility(View.GONE);
}
setListAdapter(getListAdapter());
}
