为什么做的时候Nullable会出错
@Override public View getView(int position, @androidx.annotation.Nullable View convertView, @androidx.annotation.NonNull ViewGroup parent) { return super.getView(position, convertView, parent); if(convertView == null){ convertView = inflater.inflate(R.layout.calendar_text_day,parent,false); } int day = txtData.getDate(); ((TextView) convertView).setText(String.valueOf(day)); return convertView; }