封装了一下加载进度对话框

import 'package:flutter/material.dart';

class LoadingDialogUtil {
  static void show(BuildContext context) {
    showDialog(
      barrierDismissible: false,
      context: context,
      builder: (_) => Center(
            child: CircularProgressIndicator(),
          ),
    );
  }

  static void hide(BuildContext context) {
    Navigator.of(context).pop();
  }
}